Classes
class	ChangeBackgroundOp

class	ChangeLevelSetBackgroundOp

struct	CompReplaceOp

class	CsgVisitorBase

struct	CsgUnionVisitor

struct	CsgIntersectVisitor

struct	CsgDiffVisitor

class	DenseBase
	Base class for Dense which is defined below. More...

class	DenseBase< ValueT, LayoutZYX >
	Partial template specialization of DenseBase. More...

class	DenseBase< ValueT, LayoutXYZ >
	Partial template specialization of DenseBase. More...

class	Dense
	Dense is a simple dense grid API used by the CopyToDense and CopyFromDense classes defined below. More...

class	CopyToDense
	Copy an OpenVDB tree into an existing dense grid. More...

class	CopyFromDense
	Copy the values from a dense grid into an OpenVDB tree. More...

struct	DSConverter

class	SparseExtractor
	Functor-based class used to extract data that satisfies some criteria defined by the embedded `OpType` functor. The `extractSparseTree` function wraps this class. More...

class	SparseMaskedExtractor
	Functor-based class used to extract data from a dense grid, at the index-space intersection with a supplied mask in the form of a sparse tree. The `extractSparseTreeWithMask` function wraps this class. More...

struct	ExtractAll
	a simple utility class used by `extractSparseTreeWithMask` More...

class	DenseTransformer
	Class that applies a functor to the index space intersection of a prescribed bounding box and the dense grid. NB: This class only supports DenseGrids with ZYX memory layout. More...

struct	ContiguousOp
	a wrapper struct used to avoid unnecessary computation of memory access from `Coord` when all offsets are guaranteed to be within the dense grid. More...

class	SparseToDenseCompositor

struct	CheckNan
	Checks NaN values. More...

struct	CheckInf
	Checks for infinite values, e.g. 1/0 or -1/0. More...

struct	CheckFinite
	Checks for both NaN and inf values, i.e. any value that is not finite. More...

struct	CheckMagnitude
	Check that the magnitude of a value, a, is close to a fixed magnitude, b, given a fixed tolerance c. That is \| \|a\| - \|b\| \| <= c. More...

struct	CheckRange
	Checks a value against a range. More...

struct	CheckMin
	Checks a value against a minimum. More...

struct	CheckMax
	Checks a value against a maximum. More...

struct	CheckNormGrad
	Checks the norm of the gradient against a range, i.e., \|∇Φ\| ∈ [min, max]. More...

struct	CheckEikonal
	Checks the norm of the gradient at zero-crossing voxels against a range. More...

struct	CheckDivergence
	Checks the divergence against a range. More...

class	Diagnose
	Performs multithreaded diagnostics of a grid. More...

class	CheckLevelSet
	Class that performs various types of checks on narrow-band level sets. More...

class	CheckFogVolume
	Class that performs various types of checks on fog volumes. More...

class	Filter
	Volume filtering (e.g., diffusion) with optional alpha masking. More...

struct	VectorToScalarConverter
	VectorToScalarConverter<VectorGridType>::Type is the type of a grid having the same tree configuration as VectorGridType but a scalar value type, T, where T is the type of the original vector components. More...

struct	ScalarToVectorConverter
	ScalarToVectorConverter<ScalarGridType>::Type is the type of a grid having the same tree configuration as ScalarGridType but value type Vec3<T> where T is ScalarGridType::ValueType. More...

class	Cpt
	Compute the closest-point transform of a scalar grid. More...

class	Curl
	Compute the curl of a vector grid. More...

class	Divergence
	Compute the divergence of a vector grid. More...

class	Gradient
	Compute the gradient of a scalar grid. More...

class	Laplacian

class	MeanCurvature

class	Magnitude

class	Normalize

class	GridResampler

class	GridTransformer
	A GridTransformer applies a geometric transformation to an input grid using one of several sampling schemes, and stores the result in an output grid. More...

class	ABTransform
	This class implements the Transformer functor interface (specifically, the isAffine(), transform() and invTransform() methods) for a transform that maps an A grid into a B grid's index space such that, after resampling, A's index space and transform match B's index space and transform. More...

struct	Sampler
	Provises a unified interface for sampling, i.e. interpolation. More...

struct	PointSampler

struct	BoxSampler

struct	QuadraticSampler

struct	StaggeredPointSampler

struct	StaggeredBoxSampler

struct	StaggeredQuadraticSampler

class	GridSampler
	Class that provides the interface for continuous sampling of values in a tree. More...

class	GridSampler< tree::ValueAccessor< TreeT >, SamplerType >
	Specialization of GridSampler for construction from a ValueAccessor type. More...

class	DualGridSampler
	This is a simple convenience class that allows for sampling from a source grid into the index space of a target grid. At construction the source and target grids are checked for alignment which potentially renders interpolation unnecessary. Else interpolation is performed according to the templated Sampler type. More...

class	DualGridSampler< tree::ValueAccessor< TreeT >, SamplerT >
	Specialization of DualGridSampler for construction from a ValueAccessor type. More...

class	AlphaMask

struct	Sampler< 0, false >

struct	Sampler< 1, false >

struct	Sampler< 2, false >

struct	Sampler< 0, true >

struct	Sampler< 1, true >

struct	Sampler< 2, true >

class	LevelSetAdvection
	Hyperbolic advection of narrow-band level sets in an external velocity field. More...

class	LevelSetFilter
	Filtering (e.g. diffusion) of narrow-band level sets. An optional scalar field can be used to produce a (smooth) alpha mask for the filtering. More...

class	LevelSetFracture
	Level set fracturing. More...

class	DiracDelta
	Smeared-out and continuous Dirac Delta function. More...

class	LevelSetMeasure
	Multi-threaded computation of surface area, volume and average mean-curvature for narrow band level sets. More...

class	LevelSetMorphing
	Shape morphology of level sets. Morphing from a source narrow-band level sets to a target narrow-band level set. More...

class	LevelSetSphere
	Generates a signed distance field (or narrow band level set) to a single sphere. More...

class	LevelSetTracker
	Performs multi-threaded interface tracking of narrow band level sets. More...

struct	QuadAndTriangleDataAdapter
	Contiguous quad and triangle data adapter class. More...

class	MeshToVoxelEdgeData
	Extracts and stores voxel edge intersection data from a mesh. More...

struct	DimToWord
	Mapping from a Log2Dim to a data type of size 2^Log2Dim bits. More...

struct	DimToWord< 3 >

struct	DimToWord< 4 >

struct	DimToWord< 5 >

struct	DimToWord< 6 >

class	Morphology

class	DilationOp
	Class that performs multi-threaded dilation with support for active tiles. More...

class	MultiResGrid

struct	ParticleAtlas

class	ParticlesToLevelSet

class	ClosestPointProjector

class	PointAdvect

class	ConstrainedPointAdvect

struct	PointIndexLeafNode

struct	PointIndexIterator
	Accelerated range and nearest-neighbor searches for point index grids. More...

struct	PointIndexFilter

class	PointPartitioner

class	BasePointScatter
	Forward declaration of base class. More...

class	UniformPointScatter
	The two point scatters UniformPointScatter and NonUniformPointScatter depend on the following two classes: More...

class	DenseUniformPointScatter
	Scatters a fixed (and integer) number of points in all active voxels and tiles. More...

class	NonUniformPointScatter
	Non-uniform scatters of point in the active voxels. The local point count is implicitly defined as a product of of a global density (called pointsPerVolume) and the local voxel (or tile) value. More...

class	PointsToMask
	Makes every voxel of a grid active if it contains a point. More...

struct	VectorToScalarGrid
	Metafunction to convert a vector-valued grid type to a scalar grid type. More...

class	InactivePruneOp

class	TolerancePruneOp

class	LevelSetPruneOp

class	LinearSearchImpl
	Implements linear iterative search for an iso-value of the level set along the direction of the ray. More...

class	LevelSetRayIntersector
	This class provides the public API for intersecting a ray with a narrow-band level set. More...

class	VolumeRayIntersector
	This class provides the public API for intersecting a ray with a generic (e.g. density) volume. More...

class	LevelSetRayTracer
	A (very) simple multithreaded ray tracer specifically for narrow-band level sets. More...

class	VolumeRender
	A (very) simple multithreaded volume render specifically for scalar density. More...

class	Film
	A simple class that allows for concurrent writes to pixels in an image, background initialization of the image, and PPM or EXR file output. More...

class	BaseCamera
	Abstract base class for the perspective and orthographic cameras. More...

class	PerspectiveCamera

class	OrthographicCamera

class	BaseShader
	Abstract base class for the shaders. More...

class	MatteShader
	Shader that produces a simple matte. More...

class	MatteShader< Film::RGBA, SamplerType >

class	NormalShader
	Color shader that treats the surface normal (x, y, z) as an RGB color. More...

class	NormalShader< Film::RGBA, SamplerType >

class	PositionShader
	Color shader that treats position (x, y, z) as an RGB color in a cube defined from an axis-aligned bounding box in world space. More...

class	PositionShader< Film::RGBA, SamplerType >

class	DiffuseShader
	Simple diffuse Lambertian surface shader. More...

class	DiffuseShader< Film::RGBA, SamplerType >

class	SignedFloodFillOp

struct	HomogeneousMatMul

struct	MatMul

struct	MatMulNormalize

class	DiscreteField
	Thin wrapper class for a velocity grid. More...

class	EnrightField
	Analytical, divergence-free and periodic velocity field. More...

class	VelocitySampler

class	VelocityIntegrator
	Performs Runge-Kutta time integration of variable order in a static velocity field. More...

class	VolumeAdvection
	Performs advections of an arbitrary type of volume in a static velocity field. The advections are performed by means of various derivatives of Semi-Lagrangian integration, i.e. backwards tracking along the hyperbolic characteristics followed by interpolation. More...

class	PolygonPool
	Collection of quads and triangles. More...

struct	VolumeToMesh
	Mesh any scalar grid that has a continuous isosurface. More...

class	ClosestSurfacePoint
	Accelerated closest surface point queries for narrow band level sets. More...

Typedefs
using	ParticleIndexAtlas = ParticleAtlas< PointIndexGrid >

using	PointIndexTree = tree::Tree< tree::RootNode< tree::InternalNode< tree::InternalNode< PointIndexLeafNode< PointIndex32, 3 >, 4 >, 5 >>>
	Point index tree configured to match the default OpenVDB tree configuration. More...

using	PointIndexGrid = Grid< PointIndexTree >
	Point index grid. More...

using	UInt32PointPartitioner = PointPartitioner< uint32_t, 3 >


using	PointList = hboost::scoped_array< openvdb::Vec3s >
	Point and primitive list types. More...

using	PolygonPoolList = hboost::scoped_array< PolygonPool >
	Point and primitive list types. More...

Enumerations
enum	MemoryLayout { LayoutXYZ, LayoutZYX }

enum	DSCompositeOp { DS_OVER, DS_ADD, DS_SUB, DS_MIN, DS_MAX, DS_MULT, DS_SET }

enum	MeshToVolumeFlags { UNSIGNED_DISTANCE_FIELD = 0x1, DISABLE_INTERSECTING_VOXEL_REMOVAL = 0x2, DISABLE_RENORMALIZATION = 0x4, DISABLE_NARROW_BAND_TRIMMING = 0x8 }
	Mesh to volume conversion flags. More...

enum	NearestNeighbors { NN_FACE = 6, NN_FACE_EDGE = 18, NN_FACE_EDGE_VERTEX = 26 }
	Voxel topology of nearest neighbors. More...

enum	TilePolicy { IGNORE_TILES, EXPAND_TILES, PRESERVE_TILES }
	Different policies when dilating trees with active tiles. More...

enum	{ POLYFLAG_EXTERIOR = 0x1, POLYFLAG_FRACTURE_SEAM = 0x2, POLYFLAG_SUBDIVIDED = 0x4 }
	Polygon flags, used for reference based meshing. More...

Functions
template<typename TreeOrLeafManagerT >
void	changeBackground (TreeOrLeafManagerT &tree, const typename TreeOrLeafManagerT::ValueType &background, bool threaded=true, size_t grainSize=32)
	Replace the background value in all the nodes of a tree. More...

template<typename TreeOrLeafManagerT >
void	changeLevelSetBackground (TreeOrLeafManagerT &tree, const typename TreeOrLeafManagerT::ValueType &halfWidth, bool threaded=true, size_t grainSize=32)
	Replace the background value in all the nodes of a floating-point tree containing a symmetric narrow-band level set. More...

template<typename TreeOrLeafManagerT >
void	changeAsymmetricLevelSetBackground (TreeOrLeafManagerT &tree, const typename TreeOrLeafManagerT::ValueType &outsideWidth, const typename TreeOrLeafManagerT::ValueType &insideWidth, bool threaded=true, size_t grainSize=32)
	Replace the background values in all the nodes of a floating-point tree containing a possibly asymmetric narrow-band level set. More...

template<typename GridType >
GridType::Ptr	clip (const GridType &grid, const BBoxd &bbox, bool keepInterior=true)
	Clip the given grid against a world-space bounding box and return a new grid containing the result. More...

template<typename GridType >
GridType::Ptr	clip (const GridType &grid, const math::NonlinearFrustumMap &frustum, bool keepInterior=true)
	Clip the given grid against a frustum and return a new grid containing the result. More...

template<typename GridType , typename MaskTreeType >
GridType::Ptr	clip (const GridType &grid, const Grid< MaskTreeType > &mask, bool keepInterior=true)
	Clip a grid against the active voxels of another grid and return a new grid containing the result. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	csgUnion (GridOrTreeT &a, GridOrTreeT &b, bool prune=true)
	Given two level set grids, replace the A grid with the union of A and B. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	csgIntersection (GridOrTreeT &a, GridOrTreeT &b, bool prune=true)
	Given two level set grids, replace the A grid with the intersection of A and B. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	csgDifference (GridOrTreeT &a, GridOrTreeT &b, bool prune=true)
	Given two level set grids, replace the A grid with the difference A / B. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION GridOrTreeT::Ptr	csgUnionCopy (const GridOrTreeT &a, const GridOrTreeT &b)
	Threaded CSG union operation that produces a new grid or tree from immutable inputs. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION GridOrTreeT::Ptr	csgIntersectionCopy (const GridOrTreeT &a, const GridOrTreeT &b)
	Threaded CSG intersection operation that produces a new grid or tree from immutable inputs. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION GridOrTreeT::Ptr	csgDifferenceCopy (const GridOrTreeT &a, const GridOrTreeT &b)
	Threaded CSG difference operation that produces a new grid or tree from immutable inputs. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	compMax (GridOrTreeT &a, GridOrTreeT &b)
	Given grids A and B, compute max(a, b) per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	compMin (GridOrTreeT &a, GridOrTreeT &b)
	Given grids A and B, compute min(a, b) per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	compSum (GridOrTreeT &a, GridOrTreeT &b)
	Given grids A and B, compute a + b per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	compMul (GridOrTreeT &a, GridOrTreeT &b)
	Given grids A and B, compute a * b per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	compDiv (GridOrTreeT &a, GridOrTreeT &b)
	Given grids A and B, compute a / b per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty. More...

template<typename GridOrTreeT >
OPENVDB_STATIC_SPECIALIZATION void	compReplace (GridOrTreeT &a, const GridOrTreeT &b)
	Copy the active voxels of B into A. More...

template<typename TreeT , typename OpT = composite::CopyOp<TreeT>>
void	compActiveLeafVoxels (TreeT &srcTree, TreeT &dstTree, OpT op=composite::CopyOp< TreeT >())
	Composite the active values in leaf nodes, i.e. active voxels, of a source tree into a destination tree. More...

template<typename DenseT , typename GridOrTreeT >
void	copyToDense (const GridOrTreeT &sparse, DenseT &dense, bool serial=false)
	Populate a dense grid with the values of voxels from a sparse grid, where the sparse grid intersects the dense grid. More...

template<typename DenseT , typename GridOrTreeT >
void	copyFromDense (const DenseT &dense, GridOrTreeT &sparse, const typename GridOrTreeT::ValueType &tolerance, bool serial=false)
	Populate a sparse grid with the values of all of the voxels of a dense grid. More...

template<typename OpType , typename DenseType >
OpType::ResultTreeType::Ptr	extractSparseTree (const DenseType &dense, const OpType &functor, const typename OpType::ResultValueType &background, bool threaded=true)
	Selectively extract and transform data from a dense grid, producing a sparse tree with leaf nodes only (e.g. create a tree from the square of values greater than a cutoff.) More...

template<typename DenseType , typename MaskTreeType >
DSConverter< DenseType, MaskTreeType >::Type::Ptr	extractSparseTreeWithMask (const DenseType &dense, const MaskTreeType &mask, const typename DenseType::ValueType &background, bool threaded=true)
	Copy data from the intersection of a sparse tree and a dense input grid. The resulting tree has the same configuration as the sparse tree, but holds the data type specified by the dense input. More...

template<typename ValueT , typename OpType >
void	transformDense (Dense< ValueT, openvdb::tools::LayoutZYX > &dense, const openvdb::CoordBBox &bbox, const OpType &op, bool parallel=true)

template<DSCompositeOp , typename TreeT >
void	compositeToDense (Dense< typename TreeT::ValueType, LayoutZYX > &dense, const TreeT &source, const TreeT &alpha, const typename TreeT::ValueType beta, const typename TreeT::ValueType strength, bool threaded=true)
	Composite data from a sparse tree into a dense array of the same value type. More...

template<typename ValueT , typename PointwiseOpT >
void	transformDense (Dense< ValueT, openvdb::tools::LayoutZYX > &dense, const openvdb::CoordBBox &bbox, const PointwiseOpT &functor, bool parallel)
	Apply a point-wise functor to the intersection of a dense grid and a given bounding box. More...

template<class GridType >
std::string	checkLevelSet (const GridType &grid, size_t number=9)
	Perform checks on a grid to see if it is a valid symmetric, narrow-band level set. More...

template<class GridType >
std::string	checkFogVolume (const GridType &grid, size_t number=6)
	Perform checks on a grid to see if it is a valid fog volume. More...

template<class GridType >
bool	uniqueInactiveValues (const GridType &grid, std::vector< typename GridType::ValueType > &values, size_t numValues)
	Threaded method to find unique inactive values. More...

template<typename GridType , typename InterruptT >
ScalarToVectorConverter < GridType >::Type::Ptr	cpt (const GridType &grid, bool threaded, InterruptT *interrupt)
	Compute the Closest-Point Transform (CPT) from a distance field. More...

template<typename GridType , typename MaskT , typename InterruptT >
ScalarToVectorConverter < GridType >::Type::Ptr	cpt (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
ScalarToVectorConverter < GridType >::Type::Ptr	cpt (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
ScalarToVectorConverter < GridType >::Type::Ptr	cpt (const GridType &grid, const MaskT &mask, bool threaded=true)

template<typename GridType , typename InterruptT >
GridType::Ptr	curl (const GridType &grid, bool threaded, InterruptT *interrupt)
	Compute the curl of the given vector-valued grid. More...

template<typename GridType , typename MaskT , typename InterruptT >
GridType::Ptr	curl (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
GridType::Ptr	curl (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
GridType::Ptr	curl (const GridType &grid, const MaskT &mask, bool threaded=true)

template<typename GridType , typename InterruptT >
VectorToScalarConverter < GridType >::Type::Ptr	divergence (const GridType &grid, bool threaded, InterruptT *interrupt)
	Compute the divergence of the given vector-valued grid. More...

template<typename GridType , typename MaskT , typename InterruptT >
VectorToScalarConverter < GridType >::Type::Ptr	divergence (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
VectorToScalarConverter < GridType >::Type::Ptr	divergence (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
VectorToScalarConverter < GridType >::Type::Ptr	divergence (const GridType &grid, const MaskT &mask, bool threaded=true)

template<typename GridType , typename InterruptT >
ScalarToVectorConverter < GridType >::Type::Ptr	gradient (const GridType &grid, bool threaded, InterruptT *interrupt)
	Compute the gradient of the given scalar grid. More...

template<typename GridType , typename MaskT , typename InterruptT >
ScalarToVectorConverter < GridType >::Type::Ptr	gradient (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
ScalarToVectorConverter < GridType >::Type::Ptr	gradient (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
ScalarToVectorConverter < GridType >::Type::Ptr	gradient (const GridType &grid, const MaskT &mask, bool threaded=true)

template<typename GridType , typename InterruptT >
GridType::Ptr	laplacian (const GridType &grid, bool threaded, InterruptT *interrupt)
	Compute the Laplacian of the given scalar grid. More...

template<typename GridType , typename MaskT , typename InterruptT >
GridType::Ptr	laplacian (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
GridType::Ptr	laplacian (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
GridType::Ptr	laplacian (const GridType &grid, const MaskT mask, bool threaded=true)

template<typename GridType , typename InterruptT >
GridType::Ptr	meanCurvature (const GridType &grid, bool threaded, InterruptT *interrupt)
	Compute the mean curvature of the given grid. More...

template<typename GridType , typename MaskT , typename InterruptT >
GridType::Ptr	meanCurvature (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
GridType::Ptr	meanCurvature (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
GridType::Ptr	meanCurvature (const GridType &grid, const MaskT &mask, bool threaded=true)

template<typename GridType , typename InterruptT >
VectorToScalarConverter < GridType >::Type::Ptr	magnitude (const GridType &grid, bool threaded, InterruptT *interrupt)
	Compute the magnitudes of the vectors of the given vector-valued grid. More...

template<typename GridType , typename MaskT , typename InterruptT >
VectorToScalarConverter < GridType >::Type::Ptr	magnitude (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
VectorToScalarConverter < GridType >::Type::Ptr	magnitude (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
VectorToScalarConverter < GridType >::Type::Ptr	magnitude (const GridType &grid, const MaskT &mask, bool threaded=true)

template<typename GridType , typename InterruptT >
GridType::Ptr	normalize (const GridType &grid, bool threaded, InterruptT *interrupt)
	Normalize the vectors of the given vector-valued grid. More...

template<typename GridType , typename MaskT , typename InterruptT >
GridType::Ptr	normalize (const GridType &grid, const MaskT &mask, bool threaded, InterruptT *interrupt)

template<typename GridType >
GridType::Ptr	normalize (const GridType &grid, bool threaded=true)

template<typename GridType , typename MaskT >
GridType::Ptr	normalize (const GridType &grid, const MaskT &mask, bool threaded=true)

template<typename Sampler , typename Interrupter , typename GridType >
void	resampleToMatch (const GridType &inGrid, GridType &outGrid, Interrupter &interrupter)
	Resample an input grid into an output grid of the same type such that, after resampling, the input and output grids coincide (apart from sampling artifacts), but the output grid's transform is unchanged. More...

template<typename Sampler , typename GridType >
void	resampleToMatch (const GridType &inGrid, GridType &outGrid)
	Resample an input grid into an output grid of the same type such that, after resampling, the input and output grids coincide (apart from sampling artifacts), but the output grid's transform is unchanged. More...

template<typename Sampler , typename Interrupter , typename GridType >
void	doResampleToMatch (const GridType &inGrid, GridType &outGrid, Interrupter &interrupter)

template<class GridType >
Real	levelSetArea (const GridType &grid, bool useWorldSpace=true)
	Return the surface area of a narrow-band level set. More...

template<class GridType >
Real	levelSetVolume (const GridType &grid, bool useWorldSpace=true)
	Return the volume of a narrow-band level set surface. More...

template<class GridType >
void	levelSetMeasure (const GridType &grid, Real &area, Real &volume, bool useWorldSpace=true)
	Compute the surface area and volume of a narrow-band level set. More...

template<class GridType >
void	levelSetMeasure (const GridType &grid, Real &area, Real &volume, Real &avgCurvature, bool useWorldSpace=true)
	Compute the surface area and volume of a narrow-band level set. More...

template<class GridT >
Real	levelSetArea (const GridT &grid, bool useWorldSpace)

template<class GridT >
Real	levelSetVolume (const GridT &grid, bool useWorldSpace)

template<class GridT >
void	levelSetMeasure (const GridT &grid, Real &area, Real &volume, bool useWorldSpace)

template<class GridT >
void	levelSetMeasure (const GridT &grid, Real &area, Real &volume, Real &avgCurvature, bool useWorldSpace)

template<typename GridType , typename InterruptT >
GridType::Ptr	createLevelSetPlatonic (int faceCount, float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH), InterruptT *interrupt=nullptr)
	Return a grid of type `GridType` containing a narrow-band level set representation of a platonic solid. More...

template<typename GridType >
GridType::Ptr	createLevelSetPlatonic (int faceCount, float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Return a grid of type `GridType` containing a narrow-band level set representation of a platonic solid. More...

template<typename GridType , typename InterruptT >
GridType::Ptr	createLevelSetTetrahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH), InterruptT *interrupt=nullptr)
	Return a grid of type `GridType` containing a narrow-band level set representation of a tetrahedron. More...

template<typename GridType >
GridType::Ptr	createLevelSetTetrahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Return a grid of type `GridType` containing a narrow-band level set representation of a tetrahedron. More...

template<typename GridType , typename InterruptT >
GridType::Ptr	createLevelSetCube (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH), InterruptT *interrupt=nullptr)
	Return a grid of type `GridType` containing a narrow-band level set representation of a cube. More...

template<typename GridType >
GridType::Ptr	createLevelSetCube (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Return a grid of type `GridType` containing a narrow-band level set representation of a cube. More...

template<typename GridType , typename InterruptT >
GridType::Ptr	createLevelSetOctahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH), InterruptT *interrupt=nullptr)
	Return a grid of type `GridType` containing a narrow-band level set representation of an octahedron. More...

template<typename GridType >
GridType::Ptr	createLevelSetOctahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Return a grid of type `GridType` containing a narrow-band level set representation of an octahedron. More...

template<typename GridType , typename InterruptT >
GridType::Ptr	createLevelSetDodecahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH), InterruptT *interrupt=nullptr)
	Return a grid of type `GridType` containing a narrow-band level set representation of a dodecahedron. More...

template<typename GridType >
GridType::Ptr	createLevelSetDodecahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Return a grid of type `GridType` containing a narrow-band level set representation of a dodecahedron. More...

template<typename GridType , typename InterruptT >
GridType::Ptr	createLevelSetIcosahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH), InterruptT *interrupt=nullptr)
	Return a grid of type `GridType` containing a narrow-band level set representation of an icosahedron. More...

template<typename GridType >
GridType::Ptr	createLevelSetIcosahedron (float scale=1.0f, const Vec3f &center=Vec3f(0.0f), float voxelSize=0.1f, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Return a grid of type `GridType` containing a narrow-band level set representation of an icosahedron. More...

template<class GridType >
GridType::Ptr	levelSetRebuild (const GridType &grid, float isovalue=0, float halfWidth=float(LEVEL_SET_HALF_WIDTH), const math::Transform *xform=nullptr)
	Return a new grid of type `GridType` that contains a narrow-band level set representation of an isosurface of a given grid. More...

template<class GridType >
GridType::Ptr	levelSetRebuild (const GridType &grid, float isovalue, float exBandWidth, float inBandWidth, const math::Transform *xform=nullptr)
	Return a new grid of type `GridType` that contains a narrow-band level set representation of an isosurface of a given grid. More...

template<class GridType , typename InterruptT >
GridType::Ptr	levelSetRebuild (const GridType &grid, float isovalue, float exBandWidth, float inBandWidth, const math::Transform xform=nullptr, InterruptT interrupter=nullptr)
	Return a new grid of type `GridType` that contains a narrow-band level set representation of an isosurface of a given grid. More...

template<typename GridType , typename InterruptT >
GridType::Ptr	createLevelSetSphere (float radius, const openvdb::Vec3f &center, float voxelSize, float halfWidth=float(LEVEL_SET_HALF_WIDTH), InterruptT *interrupt=nullptr)
	Return a grid of type `GridType` containing a narrow-band level set representation of a sphere. More...

template<typename GridType >
GridType::Ptr	createLevelSetSphere (float radius, const openvdb::Vec3f &center, float voxelSize, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Return a grid of type `GridType` containing a narrow-band level set representation of a sphere. More...

template<class GridType >
void	sdfToFogVolume (GridType &grid, typename GridType::ValueType cutoffDistance=lsutilGridMax< GridType >())
	Threaded method to convert a sparse level set/SDF into a sparse fog volume. More...

template<class GridOrTreeType >
GridOrTreeType::template ValueConverter< bool > ::Type::Ptr	sdfInteriorMask (const GridOrTreeType &volume, typename GridOrTreeType::ValueType isovalue=lsutilGridZero< GridOrTreeType >())
	Threaded method to construct a boolean mask that represents interior regions in a signed distance field. More...

template<typename GridOrTreeType >
GridOrTreeType::template ValueConverter< bool > ::Type::Ptr	extractEnclosedRegion (const GridOrTreeType &volume, typename GridOrTreeType::ValueType isovalue=lsutilGridZero< GridOrTreeType >(), const typename TreeAdapter< GridOrTreeType >::TreeType::template ValueConverter< bool >::Type *fillMask=nullptr)
	Extracts the interior regions of a signed distance field and topologically enclosed (watertight) regions of value greater than the isovalue (cavities) that can arise as the result of CSG union operations between different shapes where at least one of the shapes has a concavity that is capped. More...

template<typename GridOrTreeType >
GridOrTreeType::template ValueConverter< bool > ::Type::Ptr	extractIsosurfaceMask (const GridOrTreeType &volume, typename GridOrTreeType::ValueType isovalue)
	Return a mask of the voxels that intersect the implicit surface with the given isovalue. More...

template<typename GridOrTreeType >
void	extractActiveVoxelSegmentMasks (const GridOrTreeType &volume, std::vector< typename GridOrTreeType::template ValueConverter< bool >::Type::Ptr > &masks)
	Return a mask for each connected component of the given grid's active voxels. More...

template<typename GridOrTreeType >
void	segmentActiveVoxels (const GridOrTreeType &volume, std::vector< typename GridOrTreeType::Ptr > &segments)
	Separates disjoint active topology components into distinct grids or trees. More...

template<typename GridOrTreeType >
void	segmentSDF (const GridOrTreeType &volume, std::vector< typename GridOrTreeType::Ptr > &segments)
	Separates disjoint SDF surfaces into distinct grids or trees. More...

template<typename GridType >
GridType::template ValueConverter< bool > ::Type::Ptr	interiorMask (const GridType &grid, const double isovalue=0.0)
	Given an input grid of any type, return a new, boolean grid whose active voxel topology matches the input grid's or, if the input grid is a level set, matches the input grid's interior. More...

template<typename GridType , typename MeshDataAdapter >
GridType::Ptr	meshToVolume (const MeshDataAdapter &mesh, const math::Transform &transform, float exteriorBandWidth=3.0f, float interiorBandWidth=3.0f, int flags=0, typename GridType::template ValueConverter< Int32 >::Type *polygonIndexGrid=nullptr)

template<typename GridType , typename MeshDataAdapter , typename Interrupter >
GridType::Ptr	meshToVolume (Interrupter &interrupter, const MeshDataAdapter &mesh, const math::Transform &transform, float exteriorBandWidth=3.0f, float interiorBandWidth=3.0f, int flags=0, typename GridType::template ValueConverter< Int32 >::Type *polygonIndexGrid=nullptr)
	Convert polygonal meshes that consist of quads and/or triangles into signed or unsigned distance field volumes. More...

template<typename GridType >
GridType::Ptr	meshToLevelSet (const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Convert a triangle mesh to a level set volume. More...

template<typename GridType , typename Interrupter >
GridType::Ptr	meshToLevelSet (Interrupter &interrupter, const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Adds support for a interrupter callback used to cancel the conversion. More...

template<typename GridType >
GridType::Ptr	meshToLevelSet (const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec4I > &quads, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Convert a quad mesh to a level set volume. More...

template<typename GridType , typename Interrupter >
GridType::Ptr	meshToLevelSet (Interrupter &interrupter, const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec4I > &quads, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Adds support for a interrupter callback used to cancel the conversion. More...

template<typename GridType >
GridType::Ptr	meshToLevelSet (const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, const std::vector< Vec4I > &quads, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Convert a triangle and quad mesh to a level set volume. More...

template<typename GridType , typename Interrupter >
GridType::Ptr	meshToLevelSet (Interrupter &interrupter, const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, const std::vector< Vec4I > &quads, float halfWidth=float(LEVEL_SET_HALF_WIDTH))
	Adds support for a interrupter callback used to cancel the conversion. More...

template<typename GridType >
GridType::Ptr	meshToSignedDistanceField (const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, const std::vector< Vec4I > &quads, float exBandWidth, float inBandWidth)
	Convert a triangle and quad mesh to a signed distance field with an asymmetrical narrow band. More...

template<typename GridType , typename Interrupter >
GridType::Ptr	meshToSignedDistanceField (Interrupter &interrupter, const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, const std::vector< Vec4I > &quads, float exBandWidth, float inBandWidth)
	Adds support for a interrupter callback used to cancel the conversion. More...

template<typename GridType >
GridType::Ptr	meshToUnsignedDistanceField (const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, const std::vector< Vec4I > &quads, float bandWidth)
	Convert a triangle and quad mesh to an unsigned distance field. More...

template<typename GridType , typename Interrupter >
GridType::Ptr	meshToUnsignedDistanceField (Interrupter &interrupter, const openvdb::math::Transform &xform, const std::vector< Vec3s > &points, const std::vector< Vec3I > &triangles, const std::vector< Vec4I > &quads, float bandWidth)
	Adds support for a interrupter callback used to cancel the conversion. More...

template<typename GridType , typename VecType >
GridType::Ptr	createLevelSetBox (const math::BBox< VecType > &bbox, const openvdb::math::Transform &xform, typename VecType::ValueType halfWidth=LEVEL_SET_HALF_WIDTH)
	Return a grid of type `GridType` containing a narrow-band level set representation of a box. More...

template<typename FloatTreeT >
void	traceExteriorBoundaries (FloatTreeT &tree)
	Traces the exterior voxel boundary of closed objects in the input volume tree. Exterior voxels are marked with a negative sign, voxels with a value below `0.75` are left unchanged and act as the boundary layer. More...

std::ostream &	operator<< (std::ostream &ostr, const MeshToVoxelEdgeData::EdgeData &rhs)

MeshToVoxelEdgeData::EdgeData	Abs (const MeshToVoxelEdgeData::EdgeData &x)

template<typename TreeType >
OPENVDB_STATIC_SPECIALIZATION void	dilateActiveValues (TreeType &tree, int iterations=1, NearestNeighbors nn=NN_FACE, TilePolicy mode=PRESERVE_TILES)
	Topologically dilate all active values (i.e. both voxels and tiles) in a tree using one of three nearest neighbor connectivity patterns. More...

template<typename TreeType >
OPENVDB_STATIC_SPECIALIZATION void	dilateActiveValues (tree::LeafManager< TreeType > &manager, int iterations=1, NearestNeighbors nn=NN_FACE, TilePolicy mode=PRESERVE_TILES)
	Topologically dilate all active values (i.e. both voxels and tiles) in a tree using one of three nearest neighbor connectivity patterns. More...

template<typename TreeType >
OPENVDB_STATIC_SPECIALIZATION void	dilateVoxels (TreeType &tree, int iterations=1, NearestNeighbors nn=NN_FACE)
	Topologically dilate all leaf-level active voxels in a tree using one of three nearest neighbor connectivity patterns. More...

template<typename TreeType >
OPENVDB_STATIC_SPECIALIZATION void	dilateVoxels (tree::LeafManager< TreeType > &manager, int iterations=1, NearestNeighbors nn=NN_FACE)
	Topologically dilate all leaf-level active voxels in a tree using one of three nearest neighbor connectivity patterns. More...

template<typename GridOrTree >
void	activate (GridOrTree &, const typename GridOrTree::ValueType &value, const typename GridOrTree::ValueType &tolerance=zeroVal< typename GridOrTree::ValueType >())
	Mark as active any inactive tiles or voxels in the given grid or tree whose values are equal to value (optionally to within the given tolerance). More...

template<typename GridOrTree >
void	deactivate (GridOrTree &, const typename GridOrTree::ValueType &value, const typename GridOrTree::ValueType &tolerance=zeroVal< typename GridOrTree::ValueType >())
	Mark as inactive any active tiles or voxels in the given grid or tree whose values are equal to value (optionally to within the given tolerance). More...

template<typename GridT , typename PointArrayT >
GridT::Ptr	createPointIndexGrid (const PointArrayT &points, double voxelSize)
	Partition points into a point index grid to accelerate range and nearest-neighbor searches. More...

template<typename GridT , typename PointArrayT >
GridT::Ptr	createPointIndexGrid (const PointArrayT &points, const math::Transform &xform)
	Partition points into a point index grid to accelerate range and nearest-neighbor searches. More...

template<typename PointArrayT , typename GridT >
bool	isValidPartition (const PointArrayT &points, const GridT &grid)
	Return `true` if the given point index grid represents a valid partitioning of the given point array. More...

template<typename GridT , typename PointArrayT >
GridT::ConstPtr	getValidPointIndexGrid (const PointArrayT &points, const typename GridT::ConstPtr &grid)
	Repartition the points if needed, otherwise return the input grid. More...

template<typename GridT , typename PointArrayT >
GridT::Ptr	getValidPointIndexGrid (const PointArrayT &points, const typename GridT::Ptr &grid)
	Repartition the points if needed, otherwise return the input grid. More...

template<typename PointListT , typename GridT >
void	maskPoints (const PointListT &points, GridT &grid)
	Makes every voxel of the `grid` active if it contains a point. More...

template<typename PointListT >
MaskGrid::Ptr	createPointMask (const PointListT &points, const math::Transform &xform)
	Return a MaskGrid where each binary voxel value is on if the voxel contains one (or more) points (i.e. the 3D position of a point is closer to this voxel than any other voxels). More...

template<typename GridT , typename MaskT = typename GridT::template ValueConverter<ValueMask>::Type>
MaskT::Ptr	createPotentialFlowMask (const GridT &grid, int dilation=5)
	Construct a mask for the Potential Flow domain. More...

template<typename Vec3T , typename GridT , typename MaskT >
GridT::template ValueConverter < Vec3T >::Type::Ptr	createPotentialFlowNeumannVelocities (const GridT &collider, const MaskT &domain, const typename GridT::template ValueConverter< Vec3T >::Type::ConstPtr boundaryVelocity, const Vec3T &backgroundVelocity)
	Create a Potential Flow velocities grid for the Neumann boundary. More...

template<typename Vec3GridT , typename MaskT , typename InterrupterT = util::NullInterrupter>
VectorToScalarGrid< Vec3GridT > ::Ptr	computeScalarPotential (const MaskT &domain, const Vec3GridT &neumann, math::pcg::State &state, InterrupterT *interrupter=nullptr)
	Compute the Potential on the domain using the Neumann boundary conditions on solid boundaries. More...

template<typename Vec3GridT >
Vec3GridT::Ptr	computePotentialFlow (const typename VectorToScalarGrid< Vec3GridT >::Type &potential, const Vec3GridT &neumann, const typename Vec3GridT::ValueType backgroundVelocity=zeroVal< typename Vec3GridT::TreeType::ValueType >())
	Compute a vector Flow Field comprising the gradient of the potential with Neumann boundary conditions applied. More...

template<typename TreeT >
void	prune (TreeT &tree, typename TreeT::ValueType tolerance=zeroVal< typename TreeT::ValueType >(), bool threaded=true, size_t grainSize=1)
	Reduce the memory footprint of a tree by replacing with tiles any nodes whose values are all the same (optionally to within a tolerance) and have the same active state. More...

template<typename TreeT >
void	pruneTiles (TreeT &tree, typename TreeT::ValueType tolerance=zeroVal< typename TreeT::ValueType >(), bool threaded=true, size_t grainSize=1)
	Reduce the memory footprint of a tree by replacing with tiles any non-leaf nodes whose values are all the same (optionally to within a tolerance) and have the same active state. More...

template<typename TreeT >
void	pruneInactive (TreeT &tree, bool threaded=true, size_t grainSize=1)
	Reduce the memory footprint of a tree by replacing with background tiles any nodes whose values are all inactive. More...

template<typename TreeT >
void	pruneInactiveWithValue (TreeT &tree, const typename TreeT::ValueType &value, bool threaded=true, size_t grainSize=1)
	Reduce the memory footprint of a tree by replacing any nodes whose values are all inactive with tiles of the given value. More...

template<typename TreeT >
void	pruneLevelSet (TreeT &tree, bool threaded=true, size_t grainSize=1)
	Reduce the memory footprint of a tree by replacing nodes whose values are all inactive with inactive tiles having a value equal to the first value encountered in the (inactive) child. More...

template<typename TreeT >
void	pruneLevelSet (TreeT &tree, const typename TreeT::ValueType &outsideWidth, const typename TreeT::ValueType &insideWidth, bool threaded=true, size_t grainSize=1)
	Reduce the memory footprint of a tree by replacing nodes whose voxel values are all inactive with inactive tiles having the value -\| insideWidth \| if the voxel values are negative and \| outsideWidth \| otherwise. More...

template<typename GridT >
void	rayTrace (const GridT &, const BaseShader &, BaseCamera &, size_t pixelSamples=1, unsigned int seed=0, bool threaded=true)
	Ray-trace a volume. More...

template<typename GridT , typename IntersectorT >
void	rayTrace (const GridT &, const IntersectorT &, const BaseShader &, BaseCamera &, size_t pixelSamples=1, unsigned int seed=0, bool threaded=true)
	Ray-trace a volume using a given ray intersector. More...

template<typename TreeOrLeafManagerT >
void	signedFloodFill (TreeOrLeafManagerT &tree, bool threaded=true, size_t grainSize=1, Index minLevel=0)
	Set the values of all inactive voxels and tiles of a narrow-band level set from the signs of the active voxels, setting outside values to +background and inside values to -background. More...

template<typename TreeOrLeafManagerT >
void	signedFloodFillWithValues (TreeOrLeafManagerT &tree, const typename TreeOrLeafManagerT::ValueType &outsideWidth, const typename TreeOrLeafManagerT::ValueType &insideWidth, bool threaded=true, size_t grainSize=1, Index minLevel=0)
	Set the values of all inactive voxels and tiles of a narrow-band level set from the signs of the active voxels, setting exterior values to outsideWidth and interior values to insideWidth. Set the background value of this tree to outsideWidth. More...

template<typename IterT >
math::Histogram	histogram (const IterT &iter, double minVal, double maxVal, size_t numBins=10, bool threaded=true)
	Iterate over a scalar grid and compute a histogram of the values of the voxels that are visited, or iterate over a vector-valued grid and compute a histogram of the magnitudes of the vectors. More...

template<typename IterT >
math::Extrema	extrema (const IterT &iter, bool threaded=true)
	Iterate over a scalar grid and compute extrema (min/max) of the values of the voxels that are visited, or iterate over a vector-valued grid and compute extrema of the magnitudes of the vectors. More...

template<typename IterT >
math::Stats	statistics (const IterT &iter, bool threaded=true)
	Iterate over a scalar grid and compute statistics (mean, variance, etc.) of the values of the voxels that are visited, or iterate over a vector-valued grid and compute statistics of the magnitudes of the vectors. More...

template<typename IterT , typename ValueOp >
math::Extrema	extrema (const IterT &iter, const ValueOp &op, bool threaded)
	Iterate over a grid and compute extrema (min/max) of the values produced by applying the given functor at each voxel that is visited. More...

template<typename IterT , typename ValueOp >
math::Stats	statistics (const IterT &iter, const ValueOp &op, bool threaded)
	Iterate over a grid and compute statistics (mean, variance, etc.) of the values produced by applying the given functor at each voxel that is visited. More...

template<typename OperatorT , typename IterT >
math::Stats	opStatistics (const IterT &iter, const OperatorT &op=OperatorT(), bool threaded=true)
	Iterate over a grid and compute statistics (mean, variance, etc.) of the values produced by applying a given operator (see math/Operators.h) at each voxel that is visited. More...

template<typename OperatorT , typename IterT >
math::Extrema	opExtrema (const IterT &iter, const OperatorT &op=OperatorT(), bool threaded=true)
	Same as opStatistics except it returns a math::Extrema vs a math::Stats. More...

template<typename GridT >
GridT::template ValueConverter < float >::Type::Ptr	topologyToLevelSet (const GridT &grid, int halfWidth=3, int closingSteps=1, int dilation=0, int smoothingSteps=0)
	Compute the narrow-band signed distance to the interface between active and inactive voxels in the input grid. More...

template<typename GridT , typename InterrupterT >
GridT::template ValueConverter < float >::Type::Ptr	topologyToLevelSet (const GridT &grid, int halfWidth=3, int closingSteps=1, int dilation=0, int smoothingSteps=0, InterrupterT *interrupt=NULL)
	Compute the narrow-band signed distance to the interface between active and inactive voxels in the input grid. More...

template<typename IterT , typename XformOp >
void	foreach (const IterT &iter, XformOp &op, bool threaded=true, bool shareOp=true)

template<typename IterT , typename XformOp >
void	foreach (const IterT &iter, const XformOp &op, bool threaded=true, bool shareOp=true)

template<typename InIterT , typename OutGridT , typename XformOp >
void	transformValues (const InIterT &inIter, OutGridT &outGrid, XformOp &op, bool threaded=true, bool shareOp=true, MergePolicy merge=MERGE_ACTIVE_STATES)

template<typename InIterT , typename OutGridT , typename XformOp >
void	transformValues (const InIterT &inIter, OutGridT &outGrid, const XformOp &op, bool threaded=true, bool shareOp=true, MergePolicy merge=MERGE_ACTIVE_STATES)

template<typename IterT , typename XformOp >
void	accumulate (const IterT &iter, XformOp &op, bool threaded=true)

template<typename TreeT >
void	setValueOnMin (TreeT &tree, const Coord &xyz, const typename TreeT::ValueType &value)
	Set the value of the voxel at the given coordinates in tree to the minimum of its current value and value, and mark the voxel as active. More...

template<typename TreeT >
void	setValueOnMax (TreeT &tree, const Coord &xyz, const typename TreeT::ValueType &value)
	Set the value of the voxel at the given coordinates in tree to the maximum of its current value and value, and mark the voxel as active. More...

template<typename TreeT >
void	setValueOnSum (TreeT &tree, const Coord &xyz, const typename TreeT::ValueType &value)
	Set the value of the voxel at the given coordinates in tree to the sum of its current value and value, and mark the voxel as active. More...

template<typename TreeT >
void	setValueOnMult (TreeT &tree, const Coord &xyz, const typename TreeT::ValueType &value)
	Set the value of the voxel at the given coordinates in tree to the product of its current value and value, and mark the voxel as active. More...

template<typename GridType >
void	transformVectors (GridType &, const Mat4d &)
	Apply an affine transform to the voxel values of a vector-valued grid in accordance with the grid's vector type (covariant, contravariant, etc.). More...

template<typename GridType >
void	volumeToMesh (const GridType &grid, std::vector< Vec3s > &points, std::vector< Vec4I > &quads, double isovalue=0.0)
	Uniformly mesh any scalar grid that has a continuous isosurface. More...

template<typename GridType >
void	volumeToMesh (const GridType &grid, std::vector< Vec3s > &points, std::vector< Vec3I > &triangles, std::vector< Vec4I > &quads, double isovalue=0.0, double adaptivity=0.0, bool relaxDisorientedTriangles=true)
	Adaptively mesh any scalar grid that has a continuous isosurface. More...

Vec3d	findFeaturePoint (const std::vector< Vec3d > &points, const std::vector< Vec3d > &normals)
	Given a set of tangent elements, `points` with corresponding `normals`, this method returns the intersection point of all tangent elements. More...

template<typename GridT , typename InterrupterT = util::NullInterrupter>
void	fillWithSpheres (const GridT &grid, std::vector< openvdb::Vec4s > &spheres, const Vec2i &sphereCount=Vec2i(1, 50), bool overlapping=false, float minRadius=1.0, float maxRadius=std::numeric_limits< float >::max(), float isovalue=0.0, int instanceCount=10000, InterrupterT *interrupter=nullptr)
	Fill a closed level set or fog volume with adaptively-sized spheres. More...

template<typename GridT , typename InterrupterT = util::NullInterrupter>
OPENVDB_DEPRECATED void	fillWithSpheres (const GridT &grid, std::vector< openvdb::Vec4s > &spheres, int maxSphereCount, bool overlapping=false, float minRadius=1.0, float maxRadius=std::numeric_limits< float >::max(), float isovalue=0.0, int instanceCount=10000, InterrupterT *interrupter=nullptr)

template<typename GridT , typename InterrupterT >
void	fillWithSpheres (const GridT &grid, std::vector< openvdb::Vec4s > &spheres, int maxSphereCount, bool overlapping, float minRadius, float maxRadius, float isovalue, int instanceCount, InterrupterT *interrupter)


template<typename TreeType >
OPENVDB_STATIC_SPECIALIZATION void	erodeVoxels (TreeType &tree, int iterations=1, NearestNeighbors nn=NN_FACE)
	Topologically erode all leaf-level active voxels in the given tree. More...

template<typename TreeType >
OPENVDB_STATIC_SPECIALIZATION void	erodeVoxels (tree::LeafManager< TreeType > &manager, int iterations=1, NearestNeighbors nn=NN_FACE)
	Topologically erode all leaf-level active voxels in the given tree. More...

Typedef Documentation

using openvdb::OPENVDB_VERSION_NAME::tools::ParticleIndexAtlas = typedef ParticleAtlas<PointIndexGrid>

Definition at line 166 of file ParticleAtlas.h.

using openvdb::OPENVDB_VERSION_NAME::tools::PointIndexGrid = typedef Grid<PointIndexTree>

Point index grid.

Definition at line 86 of file PointIndexGrid.h.

using openvdb::OPENVDB_VERSION_NAME::tools::PointIndexTree = typedef tree::Tree<tree::RootNode<tree::InternalNode<tree::InternalNode <PointIndexLeafNode<PointIndex32, 3>, 4>, 5>>>

Point index tree configured to match the default OpenVDB tree configuration.

Definition at line 83 of file PointIndexGrid.h.

using openvdb::OPENVDB_VERSION_NAME::tools::PointList = typedef hboost::scoped_array<openvdb::Vec3s>

Point and primitive list types.

Definition at line 179 of file VolumeToMesh.h.

using openvdb::OPENVDB_VERSION_NAME::tools::PolygonPoolList = typedef hboost::scoped_array<PolygonPool>

Point and primitive list types.

Definition at line 180 of file VolumeToMesh.h.

using openvdb::OPENVDB_VERSION_NAME::tools::UInt32PointPartitioner = typedef PointPartitioner<uint32_t, 3>

Definition at line 201 of file PointPartitioner.h.

Enumeration Type Documentation

anonymous enum

Polygon flags, used for reference based meshing.

Enumerator
POLYFLAG_EXTERIOR
POLYFLAG_FRACTURE_SEAM
POLYFLAG_SUBDIVIDED

Definition at line 117 of file VolumeToMesh.h.

enum openvdb::OPENVDB_VERSION_NAME::tools::DSCompositeOp

We currrently support the following operations when compositing sparse data into a dense grid.

Enumerator
DS_OVER
DS_ADD
DS_SUB
DS_MIN
DS_MAX
DS_MULT
DS_SET

Definition at line 173 of file DenseSparseTools.h.

enum openvdb::OPENVDB_VERSION_NAME::tools::MemoryLayout

We currently support the following two 3D memory layouts for dense volumes: XYZ, i.e. x is the fastest moving index, and ZYX, i.e. z is the fastest moving index. The ZYX memory layout leads to nested for-loops of the order x, y, z, which we find to be the most intuitive. Hence, ZYX is the layout used throughout VDB. However, other data structures, e.g. Houdini and Maya, employ the XYZ layout. Clearly a dense volume with the ZYX layout converts more efficiently to a VDB, but we support both for convenience.

Enumerator
LayoutXYZ
LayoutZYX

Definition at line 95 of file Dense.h.

enum openvdb::OPENVDB_VERSION_NAME::tools::MeshToVolumeFlags

Mesh to volume conversion flags.

Enumerator
UNSIGNED_DISTANCE_FIELD	Switch from the default signed distance field conversion that classifies regions as either inside or outside the mesh boundary to a unsigned distance field conversion that only computes distance values. This conversion type does not require a closed watertight mesh.
DISABLE_INTERSECTING_VOXEL_REMOVAL	Disable the cleanup step that removes voxels created by self intersecting portions of the mesh.
DISABLE_RENORMALIZATION	Disable the distance renormalization step that smooths out bumps caused by self intersecting or overlapping portions of the mesh
DISABLE_NARROW_BAND_TRIMMING	Disable the cleanup step that removes active voxels that exceed the narrow band limits. (Only relevant for small limits)

Definition at line 88 of file MeshToVolume.h.

enum openvdb::OPENVDB_VERSION_NAME::tools::NearestNeighbors

Voxel topology of nearest neighbors.

NN_FACE

face adjacency (6 nearest neighbors, defined as all neighbor voxels connected along one of the primary axes)

NN_FACE_EDGE

face and edge adjacency (18 nearest neighbors, defined as all neighbor voxels connected along either one or two of the primary axes)

NN_FACE_EDGE_VERTEX

face, edge and vertex adjacency (26 nearest neighbors, defined as all neighbor voxels connected along either one, two or all three of the primary axes)

Enumerator
NN_FACE
NN_FACE_EDGE
NN_FACE_EDGE_VERTEX

Definition at line 85 of file Morphology.h.

enum openvdb::OPENVDB_VERSION_NAME::tools::TilePolicy

Different policies when dilating trees with active tiles.

IGNORE_TILES

Active tiles are ignores, i.e. only active voxels are dilates.

EXPAND_TILES

Active tiles are expanded into active voxels and then dilated.

PRESERVE_TILES

Active tiles remain unchanged but they still contribute to the dilation as if they were active voxels.

Enumerator
IGNORE_TILES
EXPAND_TILES
PRESERVE_TILES

Definition at line 100 of file Morphology.h.

Function Documentation

MeshToVoxelEdgeData::EdgeData openvdb::OPENVDB_VERSION_NAME::tools::Abs ( const MeshToVoxelEdgeData::EdgeData & x )

inline

Definition at line 3681 of file MeshToVolume.h.

template<typename IterT , typename XformOp >

void openvdb::OPENVDB_VERSION_NAME::tools::accumulate	(	const IterT &	iter,
		XformOp &	op,
		bool	threaded = `true`
	)

inline

Iterate over a grid and at each step call op(iter). If threading is enabled, call op.join(otherOp) to accumulate intermediate results from pairs of threads.

Parameters

iter	an iterator over a grid or its tree (`Grid::ValueOnCIter`, `Tree::NodeIter`, etc.)
op	a functor with a join method of the form `void join(XformOp&)` and a call method of the form `void op(const IterT&)`, where `IterT` is the type of iter
threaded	if true, transform multiple values of the grid in parallel

Note: If threaded is true, each thread gets its own copy of the original functor. The order in which threads are joined is unspecified.; If threaded is false, the join method is never called.

Example:: Compute the average of the active values of a scalar, floating-point grid using the math::Stats class.
namespace {

struct Average {

math::Stats stats;

// Accumulate voxel and tile values into this functor's Stats object.

inline void operator()(const FloatGrid::ValueOnCIter& iter) {

if (iter.isVoxelValue()) stats.add(*iter);

else stats.add(*iter, iter.getVoxelCount());

}

// Accumulate another functor's Stats object into this functor's.

inline void join(Average& other) { stats.add(other.stats); }

// Return the cumulative result.

inline double average() const { return stats.mean(); }

};

}

{

FloatGrid grid = ...;

Average op;

tools::accumulate(grid.cbeginValueOn(), op);

double average = op.average();

}

Note: For more complex operations that require finer control over threading, consider using tbb::parallel_for() or tbb::parallel_reduce() in conjunction with a tree::IteratorRange that wraps a grid or tree iterator.

Definition at line 702 of file ValueTransformer.h.

template<typename GridOrTree >

void openvdb::OPENVDB_VERSION_NAME::tools::activate	(	GridOrTree &	gridOrTree,
		const typename GridOrTree::ValueType &	value,
		const typename GridOrTree::ValueType &	tolerance = `zeroVal<typename GridOrTree::ValueType>()`
	)

inline

Mark as active any inactive tiles or voxels in the given grid or tree whose values are equal to value (optionally to within the given tolerance).

Definition at line 947 of file Morphology.h.

template<typename TreeOrLeafManagerT >

void openvdb::OPENVDB_VERSION_NAME::tools::changeAsymmetricLevelSetBackground	(	TreeOrLeafManagerT &	tree,
		const typename TreeOrLeafManagerT::ValueType &	outsideWidth,
		const typename TreeOrLeafManagerT::ValueType &	insideWidth,
		bool	threaded = `true`,
		size_t	grainSize = `32`
	)

inline

Replace the background values in all the nodes of a floating-point tree containing a possibly asymmetric narrow-band level set.

All inactive values will be set to +| outsideWidth | if outside and -| insideWidth | if inside, where outsideWidth is the outside width of the narrow band and insideWidth is its inside width.

Note: This method is faster than changeBackground since it does not perform tests to see if inactive values are equal to the old background value.; If a LeafManager is used the cached leaf nodes are reused, resulting in slightly better overall performance.

Parameters

tree	Tree (or LeafManager) that will have its background value changed
outsideWidth	The width of the outside of the narrow band
insideWidth	The width of the inside of the narrow band
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 32)

Exceptions

ValueError if outsideWidth is negative or insideWidth is not negative (as defined by math::isNegative)

Definition at line 244 of file ChangeBackground.h.

template<typename TreeOrLeafManagerT >

void openvdb::OPENVDB_VERSION_NAME::tools::changeBackground	(	TreeOrLeafManagerT &	tree,
		const typename TreeOrLeafManagerT::ValueType &	background,
		bool	threaded = `true`,
		size_t	grainSize = `32`
	)

inline

Replace the background value in all the nodes of a tree.

The sign of the background value is preserved, and only inactive values equal to the old background value are replaced.

Note: If a LeafManager is used the cached leaf nodes are reused, resulting in slightly better overall performance.

Parameters

tree	Tree (or LeafManager) that will have its background value changed
background	the new background value
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 32)

Definition at line 230 of file ChangeBackground.h.

template<typename TreeOrLeafManagerT >

void openvdb::OPENVDB_VERSION_NAME::tools::changeLevelSetBackground	(	TreeOrLeafManagerT &	tree,
		const typename TreeOrLeafManagerT::ValueType &	halfWidth,
		bool	threaded = `true`,
		size_t	grainSize = `32`
	)

inline

Replace the background value in all the nodes of a floating-point tree containing a symmetric narrow-band level set.

All inactive values will be set to +| halfWidth | if outside and -| halfWidth | if inside, where halfWidth is half the width of the symmetric narrow band.

Note: This method is faster than changeBackground since it does not perform tests to see if inactive values are equal to the old background value.; If a LeafManager is used the cached leaf nodes are reused, resulting in slightly better overall performance.

Parameters

tree	Tree (or LeafManager) that will have its background value changed
halfWidth	half of the width of the symmetric narrow band
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 32)

Exceptions

ValueError if halfWidth is negative (as defined by math::isNegative)

Definition at line 260 of file ChangeBackground.h.

template<class GridType >

std::string openvdb::OPENVDB_VERSION_NAME::tools::checkFogVolume	(	const GridType &	grid,
		size_t	number = `6`
	)

Perform checks on a grid to see if it is a valid fog volume.

Parameters

grid	Grid to be checked
number	Number of the checks to be performed (see below)

Returns: string with a message indicating the nature of the issue. If no issue is detected the return string is empty.

number refers to the following ordered list of checks - always starting from the top. Fast checks 1: value type is floating point 2: has FOG volume class type 3: background value is zero

Slower checks 4: all the values are finite, i.e not NaN or infinite 5: inactive values are zero 6: active values are in the range [0,1]

Definition at line 1110 of file Diagnostics.h.

template<class GridType >

std::string openvdb::OPENVDB_VERSION_NAME::tools::checkLevelSet	(	const GridType &	grid,
		size_t	number = `9`
	)

Perform checks on a grid to see if it is a valid symmetric, narrow-band level set.

Parameters

grid	Grid to be checked
number	Number of the checks to be performed (see below)

Returns: string with a message indicating the nature of the issue. If no issue is detected the return string is empty.

number refers to the following ordered list of checks - always starting from the top. Fast checks 1: value type is floating point 2: has level set class type 3: has uniform scale 4: background value is positive and n*dx

Slower checks 5: no active tiles 6: all the values are finite, i.e not NaN or infinite 7: active values in range between +-background 8: abs of inactive values = background, i.e. assuming a symmetric narrow band!

Relatively slow check (however multithreaded) 9: norm gradient is close to one, i.e. satisfied the Eikonal equation.

Definition at line 974 of file Diagnostics.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::clip	(	const GridType &	grid,
		const BBoxd &	bbox,
		bool	keepInterior = `true`
	)

inline

Clip the given grid against a world-space bounding box and return a new grid containing the result.

Parameters

grid	the grid to be clipped
bbox	a world-space bounding box
keepInterior	if true, discard voxels that lie outside the bounding box; if false, discard voxels that lie inside the bounding box

Warning: Clipping a level set will likely produce a grid that is no longer a valid level set.

Definition at line 375 of file Clip.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::clip	(	const GridType &	grid,
		const math::NonlinearFrustumMap &	frustum,
		bool	keepInterior = `true`
	)

inline

Clip the given grid against a frustum and return a new grid containing the result.

Parameters

grid	the grid to be clipped
frustum	a frustum map
keepInterior	if true, discard voxels that lie outside the frustum; if false, discard voxels that lie inside the frustum

Warning: Clipping a level set will likely produce a grid that is no longer a valid level set.

Definition at line 427 of file Clip.h.

template<typename GridType , typename MaskTreeType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::clip	(	const GridType &	grid,
		const Grid< MaskTreeType > &	mask,
		bool	keepInterior = `true`
	)

inline

Clip a grid against the active voxels of another grid and return a new grid containing the result.

Parameters

grid	the grid to be clipped
mask	a grid whose active voxels form a boolean clipping mask
keepInterior	if true, discard voxels that do not intersect the mask; if false, discard voxels that intersect the mask

The mask grid need not have the same transform as the source grid. Also, if the mask grid is a level set, consider using tools::sdfInteriorMask to construct a new mask comprising the interior (rather than the narrow band) of the level set.

Warning: Clipping a level set will likely produce a grid that is no longer a valid level set.

template<typename TreeT , typename OpT = composite::CopyOp<TreeT>>

void openvdb::OPENVDB_VERSION_NAME::tools::compActiveLeafVoxels	(	TreeT &	srcTree,
		TreeT &	dstTree,
		OpT	op = `composite::CopyOp<TreeT>()`
	)

inline

Composite the active values in leaf nodes, i.e. active voxels, of a source tree into a destination tree.

Parameters

srcTree	source tree from which active voxels are composited.
dstTree	destination tree into which active voxels are composited.
op	a functor of the form `void op(T& dst, const T& src)`, where `T` is the `ValueType` of the tree, that composites a source value into a destination value. By default it copies the value from src to dst.

All active voxels in the source tree will be active in the destination tree, and their value is determined by a use-defined functor (OpT op) that operates on the source and destination values. The only exception is when the tree type is MaskTree, in which case no functor is needed since by defintion a MaskTree has no values (only topology).

Warning: This function only operated on leaf node values, i.e. tile values are ignored.

Definition at line 1245 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::compDiv	(	GridOrTreeT &	a,
		GridOrTreeT &	b
	)

inline

Given grids A and B, compute a / b per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty.

Definition at line 810 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::compMax	(	GridOrTreeT &	a,
		GridOrTreeT &	b
	)

inline

Given grids A and B, compute max(a, b) per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty.

Definition at line 748 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::compMin	(	GridOrTreeT &	a,
		GridOrTreeT &	b
	)

inline

Given grids A and B, compute min(a, b) per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty.

Definition at line 764 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::compMul	(	GridOrTreeT &	a,
		GridOrTreeT &	b
	)

inline

Given grids A and B, compute a * b per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty.

Definition at line 795 of file Composite.h.

template<DSCompositeOp , typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::compositeToDense	(	Dense< typename TreeT::ValueType, LayoutZYX > &	dense,
		const TreeT &	source,
		const TreeT &	alpha,
		const typename TreeT::ValueType	beta,
		const typename TreeT::ValueType	strength,
		bool	threaded = `true`
	)

Composite data from a sparse tree into a dense array of the same value type.

Parameters

dense	Dense grid to be altered by the operation
source	Sparse data to composite into `dense`
alpha	Sparse Alpha mask used in compositing operations.
beta	Constant multiplier on src
strength	Constant multiplier on alpha
threaded	Enable threading for this operation.

Definition at line 1225 of file DenseSparseTools.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::compReplace	(	GridOrTreeT &	a,
		const GridOrTreeT &	b
	)

inline

Copy the active voxels of B into A.

Definition at line 855 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::compSum	(	GridOrTreeT &	a,
		GridOrTreeT &	b
	)

inline

Given grids A and B, compute a + b per voxel (using sparse traversal). Store the result in the A grid and leave the B grid empty.

Definition at line 780 of file Composite.h.

template<typename Vec3GridT >

Vec3GridT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::computePotentialFlow	(	const typename VectorToScalarGrid< Vec3GridT >::Type &	potential,
		const Vec3GridT &	neumann,
		const typename Vec3GridT::ValueType	backgroundVelocity = `zeroVal<typename Vec3GridT::TreeType::ValueType>()`
	)

inline

Compute a vector Flow Field comprising the gradient of the potential with Neumann boundary conditions applied.

Parameters

potential	scalar potential, typically computed from computeScalarPotential()
neumann	the topology of this grid defines where the solid boundaries are and grid values give the Neumann boundaries that should be applied there
backgroundVelocity	a background velocity value

Definition at line 359 of file PotentialFlow.h.

template<typename Vec3GridT , typename MaskT , typename InterrupterT = util::NullInterrupter>

VectorToScalarGrid< Vec3GridT >::Ptr openvdb::OPENVDB_VERSION_NAME::tools::computeScalarPotential	(	const MaskT &	domain,
		const Vec3GridT &	neumann,
		math::pcg::State &	state,
		InterrupterT *	interrupter = `nullptr`
	)

inline

Compute the Potential on the domain using the Neumann boundary conditions on solid boundaries.

Parameters

domain	a mask to represent the domain in which to perform the solve
neumann	the topology of this grid defines where the solid boundaries are and grid values give the Neumann boundaries that should be applied there
state	the solver parameters for computing the solution
interrupter	pointer to an optional interrupter adhering to the util::NullInterrupter interface

On input, the State object should specify convergence criteria (minimum error and maximum number of iterations); on output, it gives the actual termination conditions.

Definition at line 329 of file PotentialFlow.h.

template<typename DenseT , typename GridOrTreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::copyFromDense	(	const DenseT &	dense,
		GridOrTreeT &	sparse,
		const typename GridOrTreeT::ValueType &	tolerance,
		bool	serial = `false`
	)

Populate a sparse grid with the values of all of the voxels of a dense grid.

Parameters

dense	the dense grid from which to copy values
sparse	an OpenVDB grid or tree into which to copy values
tolerance	values in the dense grid that are within this tolerance of the sparse grid's background value become inactive background voxels or tiles in the sparse grid
serial	if false, process voxels in parallel

Definition at line 595 of file Dense.h.

template<typename DenseT , typename GridOrTreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::copyToDense	(	const GridOrTreeT &	sparse,
		DenseT &	dense,
		bool	serial = `false`
	)

Populate a dense grid with the values of voxels from a sparse grid, where the sparse grid intersects the dense grid.

Parameters

sparse	an OpenVDB grid or tree from which to copy values
dense	the dense grid into which to copy values
serial	if false, process voxels in parallel

Definition at line 448 of file Dense.h.

template<typename GridType , typename InterruptT >

ScalarToVectorConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::cpt	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Compute the Closest-Point Transform (CPT) from a distance field.

Returns: a new vector-valued grid with the same numerical precision as the input grid (for example, if the input grid is a DoubleGrid, the output grid will be a Vec3DGrid)

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 974 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

ScalarToVectorConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::cpt	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 982 of file GridOperators.h.

template<typename GridType >

ScalarToVectorConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::cpt	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 88 of file GridOperators.h.

template<typename GridType , typename MaskT >

ScalarToVectorConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::cpt	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded = `true`
	)

inline

Definition at line 95 of file GridOperators.h.

template<typename GridType , typename VecType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetBox	(	const math::BBox< VecType > &	bbox,
		const openvdb::math::Transform &	xform,
		typename VecType::ValueType	halfWidth = `LEVEL_SET_HALF_WIDTH`
	)

inline

Return a grid of type GridType containing a narrow-band level set representation of a box.

Parameters

bbox	a bounding box in world units
xform	world-to-index-space transform
halfWidth	half the width of the narrow band, in voxel units

Definition at line 4179 of file MeshToVolume.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetCube	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		InterruptT *	interrupt = `nullptr`
	)

Return a grid of type GridType containing a narrow-band level set representation of a cube.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units
interrupt	a pointer adhering to the util::NullInterrupter interface

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 167 of file LevelSetPlatonic.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetCube	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

Return a grid of type GridType containing a narrow-band level set representation of a cube.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 188 of file LevelSetPlatonic.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetDodecahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		InterruptT *	interrupt = `nullptr`
	)

Return a grid of type GridType containing a narrow-band level set representation of a dodecahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units
interrupt	a pointer adhering to the util::NullInterrupter interface

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 257 of file LevelSetPlatonic.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetDodecahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

Return a grid of type GridType containing a narrow-band level set representation of a dodecahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 278 of file LevelSetPlatonic.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetIcosahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		InterruptT *	interrupt = `nullptr`
	)

Return a grid of type GridType containing a narrow-band level set representation of an icosahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units
interrupt	a pointer adhering to the util::NullInterrupter interface

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 302 of file LevelSetPlatonic.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetIcosahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

Return a grid of type GridType containing a narrow-band level set representation of an icosahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 323 of file LevelSetPlatonic.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetOctahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		InterruptT *	interrupt = `nullptr`
	)

Return a grid of type GridType containing a narrow-band level set representation of an octahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units
interrupt	a pointer adhering to the util::NullInterrupter interface

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 212 of file LevelSetPlatonic.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetOctahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

Return a grid of type GridType containing a narrow-band level set representation of an octahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 233 of file LevelSetPlatonic.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetPlatonic	(	int	faceCount,
		float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		InterruptT *	interrupt = `nullptr`
	)

Return a grid of type GridType containing a narrow-band level set representation of a platonic solid.

Parameters

faceCount	number of faces of the platonic solid, i.e. 4, 6, 8, 12 or 20
scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units
interrupt	a pointer adhering to the util::NullInterrupter interface

Faces: TETRAHEDRON=4, CUBE=6, OCTAHEDRON=8, DODECAHEDRON=12, ICOSAHEDRON=20

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 337 of file LevelSetPlatonic.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetPlatonic	(	int	faceCount,
		float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

Return a grid of type GridType containing a narrow-band level set representation of a platonic solid.

Parameters

faceCount	number of faces of the platonic solid, i.e. 4, 6, 8, 12 or 20
scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units

Faces: TETRAHEDRON=4, CUBE=6, OCTAHEDRON=8, DODECAHEDRON=12, ICOSAHEDRON=20

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 96 of file LevelSetPlatonic.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetSphere	(	float	radius,
		const openvdb::Vec3f &	center,
		float	voxelSize,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		InterruptT *	interrupt = `nullptr`
	)

Return a grid of type GridType containing a narrow-band level set representation of a sphere.

Parameters

radius	radius of the sphere in world units
center	center of the sphere in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units
interrupt	a pointer adhering to the util::NullInterrupter interface

Note: GridType::ValueType must be a floating-point scalar.; The leapfrog algorithm employed in this method is best suited for a single large sphere. For multiple small spheres consider using the faster algorithm in ParticlesToLevelSet.h

Definition at line 204 of file LevelSetSphere.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetSphere	(	float	radius,
		const openvdb::Vec3f &	center,
		float	voxelSize,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

Return a grid of type GridType containing a narrow-band level set representation of a sphere.

Parameters

radius	radius of the sphere in world units
center	center of the sphere in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units

Note: GridType::ValueType must be a floating-point scalar.; The leapfrog algorithm employed in this method is best suited for a single large sphere. For multiple small spheres consider using the faster algorithm in ParticlesToLevelSet.h

Definition at line 87 of file LevelSetSphere.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetTetrahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		InterruptT *	interrupt = `nullptr`
	)

Return a grid of type GridType containing a narrow-band level set representation of a tetrahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units
interrupt	a pointer adhering to the util::NullInterrupter interface

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 121 of file LevelSetPlatonic.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createLevelSetTetrahedron	(	float	scale = `1.0f`,
		const Vec3f &	center = `Vec3f(0.0f)`,
		float	voxelSize = `0.1f`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

Return a grid of type GridType containing a narrow-band level set representation of a tetrahedron.

Parameters

scale	scale of the platonic solid in world units
center	center of the platonic solid in world units
voxelSize	voxel size in world units
halfWidth	half the width of the narrow band, in voxel units

Note: GridType::ValueType must be a floating-point scalar.

Definition at line 143 of file LevelSetPlatonic.h.

template<typename GridT , typename PointArrayT >

GridT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createPointIndexGrid	(	const PointArrayT &	points,
		double	voxelSize
	)

inline

Partition points into a point index grid to accelerate range and nearest-neighbor searches.

Parameters

points	world-space point array conforming to the PointArray interface
voxelSize	voxel size in world units

Definition at line 1319 of file PointIndexGrid.h.

template<typename GridT , typename PointArrayT >

GridT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createPointIndexGrid	(	const PointArrayT &	points,
		const math::Transform &	xform
	)

inline

Partition points into a point index grid to accelerate range and nearest-neighbor searches.

Parameters

points	world-space point array conforming to the PointArray interface
xform	world-to-index-space transform

Definition at line 1303 of file PointIndexGrid.h.

template<typename PointListT >

MaskGrid::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createPointMask	(	const PointListT &	points,
		const math::Transform &	xform
	)

inline

Return a MaskGrid where each binary voxel value is on if the voxel contains one (or more) points (i.e. the 3D position of a point is closer to this voxel than any other voxels).

Parameters

points	points that active the voxels in the returned grid.
xform	transform from world space to voxels in grid space.

Definition at line 117 of file PointsToMask.h.

template<typename GridT , typename MaskT = typename GridT::template ValueConverter<ValueMask>::Type>

MaskT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createPotentialFlowMask	(	const GridT &	grid,
		int	dilation = `5`
	)

inline

Construct a mask for the Potential Flow domain.

For a level set, this represents a rebuilt exterior narrow band. For any other grid it is a new region that surrounds the active voxels.

Parameters

grid	source grid to use for computing the mask
dilation	dilation in voxels of the source grid to form the new potential flow mask

Definition at line 239 of file PotentialFlow.h.

template<typename Vec3T , typename GridT , typename MaskT >

GridT::template ValueConverter< Vec3T >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::createPotentialFlowNeumannVelocities	(	const GridT &	collider,
		const MaskT &	domain,
		const typename GridT::template ValueConverter< Vec3T >::Type::ConstPtr	boundaryVelocity,
		const Vec3T &	backgroundVelocity
	)

inline

Create a Potential Flow velocities grid for the Neumann boundary.

Parameters

collider	a level set that represents the boundary
domain	a mask to represent the potential flow domain
boundaryVelocity	an optional grid pointer to stores the velocities of the boundary
backgroundVelocity	a background velocity value

Typically this method involves supplying a velocity grid for the collider boundary, however it can also be used for a global wind field around the collider by supplying an empty boundary Velocity and a non-zero background velocity.

Definition at line 265 of file PotentialFlow.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::csgDifference	(	GridOrTreeT &	a,
		GridOrTreeT &	b,
		bool	prune = `true`
	)

inline

Given two level set grids, replace the A grid with the difference A / B.

Exceptions

ValueError if the background value of either grid is not greater than zero.

Note: This operation always leaves the B grid empty.

Definition at line 1169 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION GridOrTreeT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::csgDifferenceCopy	(	const GridOrTreeT &	a,
		const GridOrTreeT &	b
	)

inline

Threaded CSG difference operation that produces a new grid or tree from immutable inputs.

Returns: The CSG difference of the and level set inputs.

Definition at line 1210 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::csgIntersection	(	GridOrTreeT &	a,
		GridOrTreeT &	b,
		bool	prune = `true`
	)

inline

Given two level set grids, replace the A grid with the intersection of A and B.

Exceptions

ValueError if the background value of either grid is not greater than zero.

Note: This operation always leaves the B grid empty.

Definition at line 1157 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION GridOrTreeT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::csgIntersectionCopy	(	const GridOrTreeT &	a,
		const GridOrTreeT &	b
	)

inline

Threaded CSG intersection operation that produces a new grid or tree from immutable inputs.

Returns: The CSG intersection of the and level set inputs.

Definition at line 1196 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::csgUnion	(	GridOrTreeT &	a,
		GridOrTreeT &	b,
		bool	prune = `true`
	)

inline

Given two level set grids, replace the A grid with the union of A and B.

Exceptions

ValueError if the background value of either grid is not greater than zero.

Note: This operation always leaves the B grid empty.

Definition at line 1145 of file Composite.h.

template<typename GridOrTreeT >

OPENVDB_STATIC_SPECIALIZATION GridOrTreeT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::csgUnionCopy	(	const GridOrTreeT &	a,
		const GridOrTreeT &	b
	)

inline

Threaded CSG union operation that produces a new grid or tree from immutable inputs.

Returns: The CSG union of the and level set inputs.

Definition at line 1182 of file Composite.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::curl	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Compute the curl of the given vector-valued grid.

Returns: a new vector-valued grid

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 990 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::curl	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 998 of file GridOperators.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::curl	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 116 of file GridOperators.h.

template<typename GridType , typename MaskT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::curl	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded = `true`
	)

inline

Definition at line 123 of file GridOperators.h.

template<typename GridOrTree >

void openvdb::OPENVDB_VERSION_NAME::tools::deactivate	(	GridOrTree &	gridOrTree,
		const typename GridOrTree::ValueType &	value,
		const typename GridOrTree::ValueType &	tolerance = `zeroVal<typename GridOrTree::ValueType>()`
	)

inline

Mark as inactive any active tiles or voxels in the given grid or tree whose values are equal to value (optionally to within the given tolerance).

Definition at line 970 of file Morphology.h.

template<typename TreeType >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::dilateActiveValues	(	TreeType &	tree,
		int	iterations = `1`,
		NearestNeighbors	nn = `NN_FACE`,
		TilePolicy	mode = `PRESERVE_TILES`
	)

inline

Topologically dilate all active values (i.e. both voxels and tiles) in a tree using one of three nearest neighbor connectivity patterns.

Note: This method is fully multi-threaded and support active tiles!

Parameters

tree	tree to be dilated
iterations	number of iterations to apply the dilation
nn	connectivity pattern of the dilation: either face-adjacent (6 nearest neighbors), face- and edge-adjacent (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 nearest neighbors).
mode	Defined the policy for handling active tiles (see above for details)

Note: The values of any voxels are unchanged.

Definition at line 1079 of file Morphology.h.

template<typename TreeType >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::dilateActiveValues	(	tree::LeafManager< TreeType > &	manager,
		int	iterations = `1`,
		NearestNeighbors	nn = `NN_FACE`,
		TilePolicy	mode = `PRESERVE_TILES`
	)

inline

Topologically dilate all active values (i.e. both voxels and tiles) in a tree using one of three nearest neighbor connectivity patterns.

Warning: Unlike the method above this one takes a LeafManger, however (unlike dilateVoxels method below) it offers no performance advantage over the one that takes a tree. Its merely included for API compatability. The leaf nodes in the manger are updated after the dilation, which incurres a (very small) overhead.

Note: This method is fully multi-threaded and support active tiles!

Parameters

manager	Leaf node manager for the tree to be dilated. On exit it is updated to include all the leaf nodes of the dilated tree.
iterations	number of iterations to apply the dilation
nn	connectivity pattern of the dilation: either face-adjacent (6 nearest neighbors), face- and edge-adjacent (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 nearest neighbors).
mode	Defined the policy for handling active tiles (see above for details)

Note: The values of any voxels are unchanged.

Definition at line 1086 of file Morphology.h.

template<typename TreeType >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::dilateVoxels	(	TreeType &	tree,
		int	iterations = `1`,
		NearestNeighbors	nn = `NN_FACE`
	)

inline

Topologically dilate all leaf-level active voxels in a tree using one of three nearest neighbor connectivity patterns.

Warning: This method is NOT multi-threaded and ignores active tiles!

Parameters

tree	tree to be dilated
iterations	number of iterations to apply the dilation
nn	connectivity pattern of the dilation: either face-adjacent (6 nearest neighbors), face- and edge-adjacent (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 nearest neighbors).

Note: The values of any voxels are unchanged.

Definition at line 858 of file Morphology.h.

template<typename TreeType >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::dilateVoxels	(	tree::LeafManager< TreeType > &	manager,
		int	iterations = `1`,
		NearestNeighbors	nn = `NN_FACE`
	)

inline

Topologically dilate all leaf-level active voxels in a tree using one of three nearest neighbor connectivity patterns.

Warning: This method is NOT multi-threaded and ignores active tiles!

Parameters

manager	LeafManager containing the tree to be dilated. On exit it is updated to include all the leaf nodes of the dilated tree.
iterations	number of iterations to apply the dilation
nn	connectivity pattern of the dilation: either face-adjacent (6 nearest neighbors), face- and edge-adjacent (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 nearest neighbors).

Note: The values of any voxels are unchanged.

Definition at line 848 of file Morphology.h.

template<typename GridType , typename InterruptT >

VectorToScalarConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::divergence	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Compute the divergence of the given vector-valued grid.

Returns: a new scalar-valued grid with the same numerical precision as the input grid (for example, if the input grid is a Vec3DGrid, the output grid will be a DoubleGrid)

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 1006 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

VectorToScalarConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::divergence	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 1015 of file GridOperators.h.

template<typename GridType >

VectorToScalarConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::divergence	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 145 of file GridOperators.h.

template<typename GridType , typename MaskT >

VectorToScalarConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::divergence	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded = `true`
	)

inline

Definition at line 152 of file GridOperators.h.

template<typename Sampler , typename Interrupter , typename GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::doResampleToMatch	(	const GridType &	inGrid,
		GridType &	outGrid,
		Interrupter &	interrupter
	)

inline

The normal entry points for resampling are the resampleToMatch() functions, which correctly handle level set grids under scaling and shearing. doResampleToMatch() is mainly for internal use but is typically faster for level sets, and correct provided that no scaling or shearing is needed.

Warning: Do not use this function to scale or shear a level set grid.

Definition at line 451 of file GridTransformer.h.

template<typename TreeType >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::erodeVoxels	(	TreeType &	tree,
		int	iterations = `1`,
		NearestNeighbors	nn = `NN_FACE`
	)

inline

Topologically erode all leaf-level active voxels in the given tree.

That is, shrink the set of active voxels by iterations voxels in the +x, -x, +y, -y, +z and -z directions, but don't change the values of any voxels, only their active states.

Todo:: Currently operates only on leaf voxels; need to extend to tiles.

Definition at line 878 of file Morphology.h.

template<typename TreeType >

OPENVDB_STATIC_SPECIALIZATION void openvdb::OPENVDB_VERSION_NAME::tools::erodeVoxels	(	tree::LeafManager< TreeType > &	manager,
		int	iterations = `1`,
		NearestNeighbors	nn = `NN_FACE`
	)

inline

Topologically erode all leaf-level active voxels in the given tree.

That is, shrink the set of active voxels by iterations voxels in the +x, -x, +y, -y, +z and -z directions, but don't change the values of any voxels, only their active states.

Todo:: Currently operates only on leaf voxels; need to extend to tiles.

Definition at line 868 of file Morphology.h.

template<typename GridOrTreeType >

void openvdb::OPENVDB_VERSION_NAME::tools::extractActiveVoxelSegmentMasks	(	const GridOrTreeType &	volume,
		std::vector< typename GridOrTreeType::template ValueConverter< bool >::Type::Ptr > &	masks
	)

inline

Return a mask for each connected component of the given grid's active voxels.

Parameters

volume	Input grid or tree
masks	Output set of disjoint active topology masks sorted in descending order based on the active voxel count.

Definition at line 2364 of file LevelSetUtil.h.

template<typename GridOrTreeType >

GridOrTreeType::template ValueConverter< bool >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::extractEnclosedRegion	(	const GridOrTreeType &	volume,
		typename GridOrTreeType::ValueType	isovalue = `lsutilGridZero<GridOrTreeType>()`,
		const typename TreeAdapter< GridOrTreeType >::TreeType::template ValueConverter< bool >::Type *	fillMask = `nullptr`
	)

inline

Extracts the interior regions of a signed distance field and topologically enclosed (watertight) regions of value greater than the isovalue (cavities) that can arise as the result of CSG union operations between different shapes where at least one of the shapes has a concavity that is capped.

For example the enclosed region of a capped bottle would include the walls and the interior cavity.

Returns: A shared pointer to either a boolean grid or tree with the same tree configuration and potentially transform as the input volume and whose active and true values correspond to the interior and enclosed regions in the input signed distance field.

Parameters

volume	Signed distance field / level set volume.
isovalue	Threshold below which values are considered part of the interior region.
fillMask	Optional boolean tree, when provided enclosed cavity regions that are not completely filled by this mask are ignored.

For instance if the fill mask does not completely fill the bottle in the previous example only the walls and cap are returned and the interior cavity will be ignored.

Definition at line 2315 of file LevelSetUtil.h.

template<typename GridOrTreeType >

GridOrTreeType::template ValueConverter< bool >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::extractIsosurfaceMask	(	const GridOrTreeType &	volume,
		typename GridOrTreeType::ValueType	isovalue
	)

inline

Return a mask of the voxels that intersect the implicit surface with the given isovalue.

Parameters

volume	Signed distance field / level set volume.
isovalue	The crossing point that is considered the surface.

Definition at line 2340 of file LevelSetUtil.h.

template<typename OpType , typename DenseType >

OpType::ResultTreeType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::extractSparseTree	(	const DenseType &	dense,
		const OpType &	functor,
		const typename OpType::ResultValueType &	background,
		bool	threaded = `true`
	)

Selectively extract and transform data from a dense grid, producing a sparse tree with leaf nodes only (e.g. create a tree from the square of values greater than a cutoff.)

Parameters

dense	A dense grid that acts as a data source
functor	A functor that selects and transforms data for output
background	The background value of the resulting sparse grid
threaded	Option to use threaded or serial code path

Returns: Ptr to tree with the valuetype and configuration defined by typedefs in the functor.

Note: To achieve optimal sparsity consider calling the prune() method on the result.; To simply copy the all the data from a Dense grid to a OpenVDB Grid, use tools::copyFromDense() for better performance.

The type of the sparse tree is determined by the specified OtpType functor by means of the typedef OptType::ResultTreeType

The OptType function is responsible for the the transformation of dense grid data to sparse grid data on a per-voxel basis.

Only leaf nodes with active values will be added to the sparse grid.

The OpType must struct that defines a the minimal form

struct ExampleOp
{
    typedef DesiredTreeType   ResultTreeType;
    template<typename IndexOrCoord>
     void OpType::operator() (const DenseValueType a, const IndexOrCoord& ijk,
                   ResultTreeType::LeafNodeType* leaf);
};

For example, to generate a <ValueType, 5, 4, 3> tree with valuesOn at locations greater than a given maskvalue

template <typename ValueType>
class Rule
{
public:
    // Standard tree type (e.g. MaskTree or FloatTree in openvdb.h)
    typedef typename openvdb::tree::Tree4<ValueType, 5, 4, 3>::Type  ResultTreeType;
    typedef typename ResultTreeType::LeafNodeType  ResultLeafNodeType;
    typedef typename ResultTreeType::ValueType     ResultValueType;
    typedef float                         DenseValueType;
    typedef vdbmath::Coord::ValueType     Index;
    Rule(const DenseValueType& value): mMaskValue(value){};
    template <typename IndexOrCoord>
    void operator()(const DenseValueType& a, const IndexOrCoord& offset,
                ResultLeafNodeType* leaf) const
    {
            if (a > mMaskValue) {
                leaf->setValueOn(offset, a);
            }
    }
private:
    const DenseValueType mMaskValue;
};

Definition at line 421 of file DenseSparseTools.h.

template<typename DenseType , typename MaskTreeType >

DSConverter< DenseType, MaskTreeType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::extractSparseTreeWithMask	(	const DenseType &	dense,
		const MaskTreeType &	mask,
		const typename DenseType::ValueType &	background,
		bool	threaded = `true`
	)

Copy data from the intersection of a sparse tree and a dense input grid. The resulting tree has the same configuration as the sparse tree, but holds the data type specified by the dense input.

Parameters

dense	A dense grid that acts as a data source
mask	The active voxels and tiles intersected with dense define iteration mask
background	The background value of the resulting sparse grid
threaded	Option to use threaded or serial code path

Returns: Ptr to tree with the same configuration as mask but of value type defined by dense.

Definition at line 613 of file DenseSparseTools.h.

template<typename IterT >

math::Extrema openvdb::OPENVDB_VERSION_NAME::tools::extrema	(	const IterT &	iter,
		bool	threaded = `true`
	)

inline

Iterate over a scalar grid and compute extrema (min/max) of the values of the voxels that are visited, or iterate over a vector-valued grid and compute extrema of the magnitudes of the vectors.

Parameters

iter	an iterator over the values of a grid or its tree (`Grid::ValueOnCIter`, `Tree::ValueOffIter`, etc.)
threaded	if true, iterate over the grid in parallel

Definition at line 379 of file Statistics.h.

template<typename IterT , typename ValueOp >

math::Extrema openvdb::OPENVDB_VERSION_NAME::tools::extrema	(	const IterT &	iter,
		const ValueOp &	op,
		bool	threaded
	)

inline

Iterate over a grid and compute extrema (min/max) of the values produced by applying the given functor at each voxel that is visited.

Parameters

iter	an iterator over the values of a grid or its tree (`Grid::ValueOnCIter`, `Tree::ValueOffIter`, etc.)
op	a functor of the form `void op(const IterT&, math::Stats&)`, where `IterT` is the type of iter, that inserts zero or more floating-point values into the provided `math::Stats` object
threaded	if true, iterate over the grid in parallel

Note: When threaded is true, each thread gets its own copy of the functor.

Example:: Compute statistics of just the active and positive-valued voxels of a scalar, floating-point grid.
struct Local {

static inline

void addIfPositive(const FloatGrid::ValueOnCIter& iter, math::Extrema& ex)

{

const float f = *iter;

if (f > 0.0) {

if (iter.isVoxelValue()) ex.add(f);

else ex.add(f, iter.getVoxelCount());

}

}

};

FloatGrid grid = ...;

math::Extrema stats =

tools::extrema(grid.cbeginValueOn(), Local::addIfPositive, /*threaded=*/true);

Definition at line 395 of file Statistics.h.

template<typename GridT , typename InterrupterT = util::NullInterrupter>

void openvdb::OPENVDB_VERSION_NAME::tools::fillWithSpheres	(	const GridT &	grid,
		std::vector< openvdb::Vec4s > &	spheres,
		const Vec2i &	sphereCount = `Vec2i(1, 50)`,
		bool	overlapping = `false`,
		float	minRadius = `1.0`,
		float	maxRadius = `std::numeric_limits<float>::max()`,
		float	isovalue = `0.0`,
		int	instanceCount = `10000`,
		InterrupterT *	interrupter = `nullptr`
	)

inline

Fill a closed level set or fog volume with adaptively-sized spheres.

Parameters

grid	a scalar grid that defines the surface to be filled with spheres
spheres	an output array of 4-tuples representing the fitted spheres The first three components of each tuple specify the sphere center, and the fourth specifies the radius. The spheres are ordered by radius, from largest to smallest.
sphereCount	lower and upper bounds on the number of spheres to be generated The actual number will be somewhere within the bounds.
overlapping	toggle to allow spheres to overlap/intersect
minRadius	the smallest allowable sphere size, in voxel units
maxRadius	the largest allowable sphere size, in voxel units
isovalue	the voxel value that determines the surface of the volume The default value of zero works for signed distance fields, while fog volumes require a larger positive value (0.5 is a good initial guess).
instanceCount	the number of interior points to consider for the sphere placement Increasing this count increases the chances of finding optimal sphere sizes.
interrupter	pointer to an object adhering to the util::NullInterrupter interface

Note: The minimum sphere count takes precedence over the minimum radius.

Definition at line 694 of file VolumeToSpheres.h.

template<typename GridT , typename InterrupterT = util::NullInterrupter>

OPENVDB_DEPRECATED void openvdb::OPENVDB_VERSION_NAME::tools::fillWithSpheres	(	const GridT &	grid,
		std::vector< openvdb::Vec4s > &	spheres,
		int	maxSphereCount,
		bool	overlapping = `false`,
		float	minRadius = `1.0`,
		float	maxRadius = `std::numeric_limits< float >::max()`,
		float	isovalue = `0.0`,
		int	instanceCount = `10000`,
		InterrupterT *	interrupter = `nullptr`
	)

inline

Deprecated:: Use the sphereCount overload instead.

Definition at line 676 of file VolumeToSpheres.h.

template<typename GridT , typename InterrupterT >

void openvdb::OPENVDB_VERSION_NAME::tools::fillWithSpheres	(	const GridT &	grid,
		std::vector< openvdb::Vec4s > &	spheres,
		int	maxSphereCount,
		bool	overlapping = `false`,
		float	minRadius = `1.0`,
		float	maxRadius = `std::numeric_limits< float >::max()`,
		float	isovalue = `0.0`,
		int	instanceCount = `10000`,
		InterrupterT *	interrupter = `nullptr`
	)

inline

Deprecated:: Use the sphereCount overload instead.

Definition at line 676 of file VolumeToSpheres.h.

Vec3d openvdb::OPENVDB_VERSION_NAME::tools::findFeaturePoint	(	const std::vector< Vec3d > &	points,
		const std::vector< Vec3d > &	normals
	)

inline

Given a set of tangent elements, points with corresponding normals, this method returns the intersection point of all tangent elements.

Note: Used to extract surfaces with sharp edges and corners from volume data, see the following paper for details: "Feature Sensitive Surface Extraction from Volume Data, Kobbelt et al. 2001".

Definition at line 298 of file VolumeToMesh.h.

template<typename IterT , typename XformOp >

void openvdb::OPENVDB_VERSION_NAME::tools::foreach	(	const IterT &	iter,
		XformOp &	op,
		bool	threaded = `true`,
		bool	shareOp = `true`
	)

inline

Iterate over a grid and at each step call op(iter).

Parameters

iter	an iterator over a grid or its tree (`Grid::ValueOnCIter`, `Tree::NodeIter`, etc.)
op	a functor of the form `void op(const IterT&)`, where `IterT` is the type of iter
threaded	if true, transform multiple values of the grid in parallel
shareOp	if true and threaded is true, all threads use the same functor; otherwise, each thread gets its own copy of the original functor

Example:: Multiply all values (both set and unset) of a scalar, floating-point grid by two.
struct Local {

static inline void op(const FloatGrid::ValueAllIter& iter) {

iter.setValue(*iter * 2);

}

};

FloatGrid grid = ...;

tools::foreach(grid.beginValueAll(), Local::op);

Example:: Rotate all active vectors of a vector grid by 45 degrees about the y axis.
namespace {

struct MatMul {

math::Mat3s M;

MatMul(const math::Mat3s& mat): M(mat) {}

inline void operator()(const VectorGrid::ValueOnIter& iter) const {

iter.setValue(M.transform(*iter));

}

};

}

{

VectorGrid grid = ...;

tools::foreach(grid.beginValueOn(),

MatMul(math::rotation<math::Mat3s>(math::Y, M_PI_4)));

}

Note: For more complex operations that require finer control over threading, consider using tbb::parallel_for() or tbb::parallel_reduce() in conjunction with a tree::IteratorRange that wraps a grid or tree iterator.

Definition at line 401 of file ValueTransformer.h.

template<typename IterT , typename XformOp >

void openvdb::OPENVDB_VERSION_NAME::tools::foreach	(	const IterT &	iter,
		const XformOp &	op,
		bool	threaded = `true`,
		bool	shareOp = `true`
	)

inline

Definition at line 415 of file ValueTransformer.h.

template<typename GridT , typename PointArrayT >

GridT::ConstPtr openvdb::OPENVDB_VERSION_NAME::tools::getValidPointIndexGrid	(	const PointArrayT &	points,
		const typename GridT::ConstPtr &	grid
	)

inline

Repartition the points if needed, otherwise return the input grid.

Definition at line 1355 of file PointIndexGrid.h.

template<typename GridT , typename PointArrayT >

GridT::Ptr openvdb::OPENVDB_VERSION_NAME::tools::getValidPointIndexGrid	(	const PointArrayT &	points,
		const typename GridT::Ptr &	grid
	)

inline

Repartition the points if needed, otherwise return the input grid.

Definition at line 1367 of file PointIndexGrid.h.

template<typename GridType , typename InterruptT >

ScalarToVectorConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::gradient	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Compute the gradient of the given scalar grid.

Returns: a new vector-valued grid with the same numerical precision as the input grid (for example, if the input grid is a DoubleGrid, the output grid will be a Vec3DGrid)

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 1023 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

ScalarToVectorConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::gradient	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 1032 of file GridOperators.h.

template<typename GridType >

ScalarToVectorConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::gradient	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 174 of file GridOperators.h.

template<typename GridType , typename MaskT >

ScalarToVectorConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::gradient	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded = `true`
	)

inline

Definition at line 181 of file GridOperators.h.

template<typename IterT >

math::Histogram openvdb::OPENVDB_VERSION_NAME::tools::histogram	(	const IterT &	iter,
		double	minVal,
		double	maxVal,
		size_t	numBins = `10`,
		bool	threaded = `true`
	)

inline

Iterate over a scalar grid and compute a histogram of the values of the voxels that are visited, or iterate over a vector-valued grid and compute a histogram of the magnitudes of the vectors.

Parameters

iter	an iterator over the values of a grid or its tree (`Grid::ValueOnCIter`, `Tree::ValueOffIter`, etc.)
minVal	the smallest value that can be added to the histogram
maxVal	the largest value that can be added to the histogram
numBins	the number of histogram bins
threaded	if true, iterate over the grid in parallel

Definition at line 368 of file Statistics.h.

template<typename GridType >

GridType::template ValueConverter< bool >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::interiorMask	(	const GridType &	grid,
		const double	isovalue = `0.0`
	)

inline

Given an input grid of any type, return a new, boolean grid whose active voxel topology matches the input grid's or, if the input grid is a level set, matches the input grid's interior.

Parameters

grid	the grid from which to construct a mask
isovalue	for a level set grid, the isovalue that defines the grid's interior

See Also: tools::sdfInteriorMask()

Definition at line 138 of file Mask.h.

template<typename PointArrayT , typename GridT >

bool openvdb::OPENVDB_VERSION_NAME::tools::isValidPartition	(	const PointArrayT &	points,
		const GridT &	grid
	)

inline

Return true if the given point index grid represents a valid partitioning of the given point array.

Parameters

points	world-space point array conforming to the PointArray interface
grid	point index grid to validate

Definition at line 1328 of file PointIndexGrid.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::laplacian	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Compute the Laplacian of the given scalar grid.

Returns: a new scalar grid

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 1040 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::laplacian	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 1049 of file GridOperators.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::laplacian	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 202 of file GridOperators.h.

template<typename GridType , typename MaskT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::laplacian	(	const GridType &	grid,
		const MaskT	mask,
		bool	threaded = `true`
	)

inline

Definition at line 209 of file GridOperators.h.

template<class GridType >

Real openvdb::OPENVDB_VERSION_NAME::tools::levelSetArea	(	const GridType &	grid,
		bool	useWorldSpace = `true`
	)

inline

Return the surface area of a narrow-band level set.

Parameters

grid	a scalar, floating-point grid with one or more disjoint, closed isosurfaces at the given isovalue
useWorldSpace	if true the area is computed in world space units, else in voxel units.

Exceptions

TypeError if grid is not scalar or not floating-point or not a level set.

template<class GridT >

Real openvdb::OPENVDB_VERSION_NAME::tools::levelSetArea	(	const GridT &	grid,
		bool	useWorldSpace
	)

inline

Definition at line 485 of file LevelSetMeasure.h.

template<class GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::levelSetMeasure	(	const GridType &	grid,
		Real &	area,
		Real &	volume,
		bool	useWorldSpace = `true`
	)

inline

Compute the surface area and volume of a narrow-band level set.

Parameters

grid	a scalar, floating-point grid with one or more disjoint, closed isosurfaces at the given isovalue
area	surface area of the level set
volume	volume of the level set surface
useWorldSpace	if true the area and volume are computed in world space units, else in voxel units.

Exceptions

TypeError if grid is not scalar or not floating-point or not a level set.

template<class GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::levelSetMeasure	(	const GridType &	grid,
		Real &	area,
		Real &	volume,
		Real &	avgCurvature,
		bool	useWorldSpace = `true`
	)

inline

Compute the surface area and volume of a narrow-band level set.

Parameters

grid	a scalar, floating-point grid with one or more disjoint, closed isosurfaces at the given isovalue
area	surface area of the level set
volume	volume of the level set surface
avgCurvature	average mean curvature of the level set surface
useWorldSpace	if true the area, volume and curvature are computed in world space units, else in voxel units.

Exceptions

TypeError if grid is not scalar or not floating-point or not a level set.

template<class GridT >

void openvdb::OPENVDB_VERSION_NAME::tools::levelSetMeasure	(	const GridT &	grid,
		Real &	area,
		Real &	volume,
		bool	useWorldSpace
	)

inline

Definition at line 559 of file LevelSetMeasure.h.

template<class GridT >

void openvdb::OPENVDB_VERSION_NAME::tools::levelSetMeasure	(	const GridT &	grid,
		Real &	area,
		Real &	volume,
		Real &	avgCurvature,
		bool	useWorldSpace
	)

inline

Definition at line 596 of file LevelSetMeasure.h.

template<class GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::levelSetRebuild	(	const GridType &	grid,
		float	isovalue = `0`,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`,
		const math::Transform *	xform = `nullptr`
	)

inline

Return a new grid of type GridType that contains a narrow-band level set representation of an isosurface of a given grid.

Parameters

grid	a scalar, floating-point grid with one or more disjoint, closed isosurfaces at the given isovalue
isovalue	the isovalue that defines the implicit surface (defaults to zero, which is typical if the input grid is already a level set or a SDF).
halfWidth	half the width of the narrow band, in voxel units (defaults to 3 voxels, which is required for some level set operations)
xform	optional transform for the output grid (if not provided, the transform of the input grid will be matched)

Exceptions

TypeError if grid is not scalar or not floating-point

Note: If the input grid contains overlapping isosurfaces, interior edges will be lost.

Definition at line 338 of file LevelSetRebuild.h.

template<class GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::levelSetRebuild	(	const GridType &	grid,
		float	isovalue,
		float	exBandWidth,
		float	inBandWidth,
		const math::Transform *	xform = `nullptr`
	)

inline

Return a new grid of type GridType that contains a narrow-band level set representation of an isosurface of a given grid.

Parameters

grid	a scalar, floating-point grid with one or more disjoint, closed isosurfaces at the given isovalue
isovalue	the isovalue that defines the implicit surface
exBandWidth	the exterior narrow-band width in voxel units
inBandWidth	the interior narrow-band width in voxel units
xform	optional transform for the output grid (if not provided, the transform of the input grid will be matched)

Exceptions

TypeError if grid is not scalar or not floating-point

Note: If the input grid contains overlapping isosurfaces, interior edges will be lost.

Definition at line 322 of file LevelSetRebuild.h.

template<class GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::levelSetRebuild	(	const GridType &	grid,
		float	isovalue,
		float	exBandWidth,
		float	inBandWidth,
		const math::Transform *	xform = `nullptr`,
		InterruptT *	interrupter = `nullptr`
	)

inline

Return a new grid of type GridType that contains a narrow-band level set representation of an isosurface of a given grid.

Parameters

grid	a scalar, floating-point grid with one or more disjoint, closed isosurfaces at the given isovalue
isovalue	the isovalue that defines the implicit surface
exBandWidth	the exterior narrow-band width in voxel units
inBandWidth	the interior narrow-band width in voxel units
xform	optional transform for the output grid (if not provided, the transform of the input grid will be matched)
interrupter	optional interrupter object

Exceptions

TypeError if grid is not scalar or not floating-point

Note: If the input grid contains overlapping isosurfaces, interior edges will be lost.

Definition at line 307 of file LevelSetRebuild.h.

template<class GridType >

Real openvdb::OPENVDB_VERSION_NAME::tools::levelSetVolume	(	const GridType &	grid,
		bool	useWorldSpace = `true`
	)

inline

Return the volume of a narrow-band level set surface.

Parameters

grid	a scalar, floating-point grid with one or more disjoint, closed isosurfaces at the given isovalue
useWorldSpace	if true the volume is computed in world space units, else in voxel units.

Exceptions

TypeError if grid is not scalar or not floating-point or not a level set.

template<class GridT >

Real openvdb::OPENVDB_VERSION_NAME::tools::levelSetVolume	(	const GridT &	grid,
		bool	useWorldSpace
	)

inline

Definition at line 523 of file LevelSetMeasure.h.

template<typename GridType , typename InterruptT >

VectorToScalarConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::magnitude	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Compute the magnitudes of the vectors of the given vector-valued grid.

Returns: a new scalar-valued grid with the same numerical precision as the input grid (for example, if the input grid is a Vec3DGrid, the output grid will be a DoubleGrid)

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 1074 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

VectorToScalarConverter< GridType >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::magnitude	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 1083 of file GridOperators.h.

template<typename GridType >

VectorToScalarConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::magnitude	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 259 of file GridOperators.h.

template<typename GridType , typename MaskT >

VectorToScalarConverter<GridType>::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::magnitude	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded = `true`
	)

inline

Definition at line 266 of file GridOperators.h.

template<typename PointListT , typename GridT >

void openvdb::OPENVDB_VERSION_NAME::tools::maskPoints	(	const PointListT &	points,
		GridT &	grid
	)

inline

Makes every voxel of the grid active if it contains a point.

Parameters

points	points that active the voxels of `grid`
grid	on out its voxels with points are active

Definition at line 102 of file PointsToMask.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meanCurvature	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Compute the mean curvature of the given grid.

Returns: a new grid

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 1057 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meanCurvature	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 1066 of file GridOperators.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meanCurvature	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 230 of file GridOperators.h.

template<typename GridType , typename MaskT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meanCurvature	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded = `true`
	)

inline

Definition at line 237 of file GridOperators.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToLevelSet	(	const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

inline

Convert a triangle mesh to a level set volume.

Returns: a grid of type GridType containing a narrow-band level set representation of the input mesh.

Exceptions

TypeError if GridType is not scalar or not floating-point

Note: Requires a closed surface but not necessarily a manifold surface. Supports surfaces with self intersections and degenerate faces and is independent of mesh surface normals.

Parameters

xform	transform for the output grid
points	list of world space point positions
triangles	triangle index list
halfWidth	half the width of the narrow band, in voxel units

Definition at line 3516 of file MeshToVolume.h.

template<typename GridType , typename Interrupter >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToLevelSet	(	Interrupter &	interrupter,
		const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

inline

Adds support for a interrupter callback used to cancel the conversion.

Definition at line 3531 of file MeshToVolume.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToLevelSet	(	const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec4I > &	quads,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

inline

Convert a quad mesh to a level set volume.

Returns: a grid of type GridType containing a narrow-band level set representation of the input mesh.

Exceptions

TypeError if GridType is not scalar or not floating-point

Note: Requires a closed surface but not necessarily a manifold surface. Supports surfaces with self intersections and degenerate faces and is independent of mesh surface normals.

Parameters

xform	transform for the output grid
points	list of world space point positions
quads	quad index list
halfWidth	half the width of the narrow band, in voxel units

Definition at line 3546 of file MeshToVolume.h.

template<typename GridType , typename Interrupter >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToLevelSet	(	Interrupter &	interrupter,
		const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec4I > &	quads,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

inline

Adds support for a interrupter callback used to cancel the conversion.

Definition at line 3561 of file MeshToVolume.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToLevelSet	(	const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		const std::vector< Vec4I > &	quads,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

inline

Convert a triangle and quad mesh to a level set volume.

Returns: a grid of type GridType containing a narrow-band level set representation of the input mesh.

Exceptions

TypeError if GridType is not scalar or not floating-point

Note: Requires a closed surface but not necessarily a manifold surface. Supports surfaces with self intersections and degenerate faces and is independent of mesh surface normals.

Parameters

xform	transform for the output grid
points	list of world space point positions
triangles	triangle index list
quads	quad index list
halfWidth	half the width of the narrow band, in voxel units

Definition at line 3576 of file MeshToVolume.h.

template<typename GridType , typename Interrupter >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToLevelSet	(	Interrupter &	interrupter,
		const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		const std::vector< Vec4I > &	quads,
		float	halfWidth = `float(LEVEL_SET_HALF_WIDTH)`
	)

inline

Adds support for a interrupter callback used to cancel the conversion.

Definition at line 3591 of file MeshToVolume.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToSignedDistanceField	(	const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		const std::vector< Vec4I > &	quads,
		float	exBandWidth,
		float	inBandWidth
	)

inline

Convert a triangle and quad mesh to a signed distance field with an asymmetrical narrow band.

Returns: a grid of type GridType containing a narrow-band signed distance field representation of the input mesh.

Exceptions

TypeError if GridType is not scalar or not floating-point

Note: Requires a closed surface but not necessarily a manifold surface. Supports surfaces with self intersections and degenerate faces and is independent of mesh surface normals.

Parameters

xform	transform for the output grid
points	list of world space point positions
triangles	triangle index list
quads	quad index list
exBandWidth	the exterior narrow-band width in voxel units
inBandWidth	the interior narrow-band width in voxel units

Definition at line 3606 of file MeshToVolume.h.

template<typename GridType , typename Interrupter >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToSignedDistanceField	(	Interrupter &	interrupter,
		const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		const std::vector< Vec4I > &	quads,
		float	exBandWidth,
		float	inBandWidth
	)

inline

Adds support for a interrupter callback used to cancel the conversion.

Definition at line 3622 of file MeshToVolume.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToUnsignedDistanceField	(	const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		const std::vector< Vec4I > &	quads,
		float	bandWidth
	)

inline

Convert a triangle and quad mesh to an unsigned distance field.

Returns: a grid of type GridType containing a narrow-band unsigned distance field representation of the input mesh.

Exceptions

TypeError if GridType is not scalar or not floating-point

Note: Does not requires a closed surface.

Parameters

xform	transform for the output grid
points	list of world space point positions
triangles	triangle index list
quads	quad index list
bandWidth	the width of the narrow band, in voxel units

Definition at line 3638 of file MeshToVolume.h.

template<typename GridType , typename Interrupter >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToUnsignedDistanceField	(	Interrupter &	interrupter,
		const openvdb::math::Transform &	xform,
		const std::vector< Vec3s > &	points,
		const std::vector< Vec3I > &	triangles,
		const std::vector< Vec4I > &	quads,
		float	bandWidth
	)

inline

Adds support for a interrupter callback used to cancel the conversion.

Definition at line 3653 of file MeshToVolume.h.

template<typename GridType , typename MeshDataAdapter >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToVolume	(	const MeshDataAdapter &	mesh,
		const math::Transform &	transform,
		float	exteriorBandWidth = `3.0f`,
		float	interiorBandWidth = `3.0f`,
		int	flags = `0`,
		typename GridType::template ValueConverter< Int32 >::Type *	polygonIndexGrid = `nullptr`
	)

inline

Definition at line 3396 of file MeshToVolume.h.

template<typename GridType , typename MeshDataAdapter , typename Interrupter >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::meshToVolume	(	Interrupter &	interrupter,
		const MeshDataAdapter &	mesh,
		const math::Transform &	transform,
		float	exteriorBandWidth = `3.0f`,
		float	interiorBandWidth = `3.0f`,
		int	flags = `0`,
		typename GridType::template ValueConverter< Int32 >::Type *	polygonIndexGrid = `nullptr`
	)

inline

Convert polygonal meshes that consist of quads and/or triangles into signed or unsigned distance field volumes.

Parameters

interrupter	a callback to interrupt the conversion process that conforms to the util::NullInterrupter interface
mesh	mesh data access class that conforms to the MeshDataAdapter interface
transform	world-to-index-space transform
exteriorBandWidth	exterior narrow band width in voxel units
interiorBandWidth	interior narrow band width in voxel units (set this value to std::numeric_limits<float>::max() to fill interior regions with distance values)
flags	optional conversion flags defined in `MeshToVolumeFlags`
polygonIndexGrid	optional grid output that will contain the closest-polygon index for each voxel in the active narrow band region

Definition at line 3094 of file MeshToVolume.h.

template<typename GridType , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::normalize	(	const GridType &	grid,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Normalize the vectors of the given vector-valued grid.

Returns: a new vector-valued grid

When a mask grid is specified, the solution is calculated only in the intersection of the mask active topology and the input active topology independent of the transforms associated with either grid.

Definition at line 1091 of file GridOperators.h.

template<typename GridType , typename MaskT , typename InterruptT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::normalize	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded,
		InterruptT *	interrupt
	)

inline

Definition at line 1100 of file GridOperators.h.

template<typename GridType >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::normalize	(	const GridType &	grid,
		bool	threaded = `true`
	)

inline

Definition at line 287 of file GridOperators.h.

template<typename GridType , typename MaskT >

GridType::Ptr openvdb::OPENVDB_VERSION_NAME::tools::normalize	(	const GridType &	grid,
		const MaskT &	mask,
		bool	threaded = `true`
	)

inline

Definition at line 294 of file GridOperators.h.

std::ostream& openvdb::OPENVDB_VERSION_NAME::tools::operator<<	(	std::ostream &	ostr,
		const MeshToVoxelEdgeData::EdgeData &	rhs
	)

inline

Definition at line 3671 of file MeshToVolume.h.

template<typename OperatorT , typename IterT >

math::Extrema openvdb::OPENVDB_VERSION_NAME::tools::opExtrema	(	const IterT &	iter,
		const OperatorT &	op = `OperatorT()`,
		bool	threaded = `true`
	)

inline

Same as opStatistics except it returns a math::Extrema vs a math::Stats.

Definition at line 414 of file Statistics.h.

template<typename OperatorT , typename IterT >

math::Stats openvdb::OPENVDB_VERSION_NAME::tools::opStatistics	(	const IterT &	iter,
		const OperatorT &	op = `OperatorT()`,
		bool	threaded = `true`
	)

inline

Iterate over a grid and compute statistics (mean, variance, etc.) of the values produced by applying a given operator (see math/Operators.h) at each voxel that is visited.

Parameters

iter	an iterator over the values of a grid or its tree (`Grid::ValueOnCIter`, `Tree::ValueOffIter`, etc.)
op	an operator object with a method of the form `double result(Accessor&, const Coord&)`
threaded	if true, iterate over the grid in parallel

Note: World-space operators, whose result() methods are of the form double result(const Map&, Accessor&, const Coord&), must be wrapped in a math::MapAdapter.; Vector-valued operators like math::Gradient must be wrapped in an adapter such as math::OpMagnitude.

Example:: Compute statistics of the magnitude of the gradient at the active voxels of a scalar, floating-point grid. (Note the use of the math::MapAdapter and math::OpMagnitude adapters.)
FloatGrid grid = ...;

// Assume that we know that the grid has a uniform scale map.

typedef math::UniformScaleMap MapType;

// Specify a world-space gradient operator that uses first-order differencing.

typedef math::Gradient<MapType, math::FD_1ST> GradientOp;

// Wrap the operator with an adapter that computes the magnitude of the gradient.

typedef math::OpMagnitude<GradientOp, MapType> MagnitudeOp;

// Wrap the operator with an adapter that associates a map with it.

typedef math::MapAdapter<MapType, GradientOp, double> CompoundOp;

if (MapType::Ptr map = grid.constTransform().constMap<MapType>()) {

math::Stats stats = tools::opStatistics(grid.cbeginValueOn(), CompoundOp(*map));

}

Example:: Compute statistics of the divergence at the active voxels of a vector-valued grid.
Vec3SGrid grid = ...;

// Assume that we know that the grid has a uniform scale map.

typedef math::UniformScaleMap MapType;

// Specify a world-space divergence operator that uses first-order differencing.

typedef math::Divergence<MapType, math::FD_1ST> DivergenceOp;

// Wrap the operator with an adapter that associates a map with it.

typedef math::MapAdapter<MapType, DivergenceOp, double> CompoundOp;

if (MapType::Ptr map = grid.constTransform().constMap<MapType>()) {

math::Stats stats = tools::opStatistics(grid.cbeginValueOn(), CompoundOp(*map));

}

Example:: As above, but computing the divergence in index space.
Vec3SGrid grid = ...;

// Specify an index-space divergence operator that uses first-order differencing.

typedef math::ISDivergence<math::FD_1ST> DivergenceOp;

math::Stats stats = tools::opStatistics(grid.cbeginValueOn(), DivergenceOp());

Definition at line 423 of file Statistics.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::prune	(	TreeT &	tree,
		typename TreeT::ValueType	tolerance = `zeroVal<typename TreeT::ValueType>()`,
		bool	threaded = `true`,
		size_t	grainSize = `1`
	)

inline

Reduce the memory footprint of a tree by replacing with tiles any nodes whose values are all the same (optionally to within a tolerance) and have the same active state.

Note: For trees with non-boolean values a child node with (approximately) constant values are replaced with a tile value corresponding to the median of the values in said child node.

Parameters

tree	the tree to be pruned
tolerance	tolerance within which values are considered to be equal
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)

Definition at line 361 of file Prune.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::pruneInactive	(	TreeT &	tree,
		bool	threaded = `true`,
		size_t	grainSize = `1`
	)

inline

Reduce the memory footprint of a tree by replacing with background tiles any nodes whose values are all inactive.

Parameters

tree	the tree to be pruned
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)

Definition at line 381 of file Prune.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::pruneInactiveWithValue	(	TreeT &	tree,
		const typename TreeT::ValueType &	value,
		bool	threaded = `true`,
		size_t	grainSize = `1`
	)

inline

Reduce the memory footprint of a tree by replacing any nodes whose values are all inactive with tiles of the given value.

Parameters

tree	the tree to be pruned
value	value assigned to inactive tiles created during pruning
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)

Definition at line 391 of file Prune.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::pruneLevelSet	(	TreeT &	tree,
		bool	threaded = `true`,
		size_t	grainSize = `1`
	)

inline

Reduce the memory footprint of a tree by replacing nodes whose values are all inactive with inactive tiles having a value equal to the first value encountered in the (inactive) child.

This method is faster than tolerance-based prune and useful for narrow-band level set applications where inactive values are limited to either an inside or an outside value.

Parameters

tree	the tree to be pruned
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)

Exceptions

ValueError if the background of the tree is negative (as defined by math::isNegative)

Definition at line 416 of file Prune.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::pruneLevelSet	(	TreeT &	tree,
		const typename TreeT::ValueType &	outsideWidth,
		const typename TreeT::ValueType &	insideWidth,
		bool	threaded = `true`,
		size_t	grainSize = `1`
	)

inline

Reduce the memory footprint of a tree by replacing nodes whose voxel values are all inactive with inactive tiles having the value -| insideWidth | if the voxel values are negative and | outsideWidth | otherwise.

This method is faster than tolerance-based prune and useful for narrow-band level set applications where inactive values are limited to either an inside or an outside value.

Parameters

tree	the tree to be pruned
outsideWidth	the width of the outside of the narrow band
insideWidth	the width of the inside of the narrow band
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)

Exceptions

ValueError if outsideWidth is negative or insideWidth is not negative (as defined by math::isNegative).

Definition at line 402 of file Prune.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::pruneTiles	(	TreeT &	tree,
		typename TreeT::ValueType	tolerance = `zeroVal<typename TreeT::ValueType>()`,
		bool	threaded = `true`,
		size_t	grainSize = `1`
	)

inline

Reduce the memory footprint of a tree by replacing with tiles any non-leaf nodes whose values are all the same (optionally to within a tolerance) and have the same active state.

Parameters

tree	the tree to be pruned
tolerance	tolerance within which values are considered to be equal
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)

Definition at line 371 of file Prune.h.

template<typename GridT >

void openvdb::OPENVDB_VERSION_NAME::tools::rayTrace	(	const GridT &	grid,
		const BaseShader &	shader,
		BaseCamera &	camera,
		size_t	pixelSamples = `1`,
		unsigned int	seed = `0`,
		bool	threaded = `true`
	)

inline

Ray-trace a volume.

Definition at line 804 of file RayTracer.h.

template<typename GridT , typename IntersectorT >

void openvdb::OPENVDB_VERSION_NAME::tools::rayTrace	(	const GridT &	,
		const IntersectorT &	inter,
		const BaseShader &	shader,
		BaseCamera &	camera,
		size_t	pixelSamples = `1`,
		unsigned int	seed = `0`,
		bool	threaded = `true`
	)

inline

Ray-trace a volume using a given ray intersector.

Definition at line 818 of file RayTracer.h.

template<typename Sampler , typename Interrupter , typename GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::resampleToMatch	(	const GridType &	inGrid,
		GridType &	outGrid,
		Interrupter &	interrupter
	)

inline

Resample an input grid into an output grid of the same type such that, after resampling, the input and output grids coincide (apart from sampling artifacts), but the output grid's transform is unchanged.

Specifically, this function resamples the input grid into the output grid's index space, using a sampling kernel like PointSampler, BoxSampler, or QuadraticSampler.

Parameters

inGrid	the grid to be resampled
outGrid	the grid into which to write the resampled voxel data
interrupter	an object adhering to the util::NullInterrupter interface

Example:: // Create an input grid with the default identity transform

// and populate it with a level-set sphere.

FloatGrid::ConstPtr src = tools::makeSphere(...);

// Create an output grid and give it a uniform-scale transform.

FloatGrid::Ptr dest = FloatGrid::create();

const float voxelSize = 0.5;

dest->setTransform(math::Transform::createLinearTransform(voxelSize));

// Resample the input grid into the output grid, reproducing

// the level-set sphere at a smaller voxel size.

MyInterrupter interrupter = ...;

tools::resampleToMatch<tools::QuadraticSampler>(*src, *dest, interrupter);

Definition at line 484 of file GridTransformer.h.

template<typename Sampler , typename GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::resampleToMatch	(	const GridType &	inGrid,
		GridType &	outGrid
	)

inline

Resample an input grid into an output grid of the same type such that, after resampling, the input and output grids coincide (apart from sampling artifacts), but the output grid's transform is unchanged.

Specifically, this function resamples the input grid into the output grid's index space, using a sampling kernel like PointSampler, BoxSampler, or QuadraticSampler.

Parameters

inGrid	the grid to be resampled
outGrid	the grid into which to write the resampled voxel data

Example:: // Create an input grid with the default identity transform

// and populate it with a level-set sphere.

FloatGrid::ConstPtr src = tools::makeSphere(...);

// Create an output grid and give it a uniform-scale transform.

FloatGrid::Ptr dest = FloatGrid::create();

const float voxelSize = 0.5;

dest->setTransform(math::Transform::createLinearTransform(voxelSize));

// Resample the input grid into the output grid, reproducing

// the level-set sphere at a smaller voxel size.

tools::resampleToMatch<tools::QuadraticSampler>(*src, *dest);

Definition at line 527 of file GridTransformer.h.

template<class GridOrTreeType >

GridOrTreeType::template ValueConverter< bool >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::sdfInteriorMask	(	const GridOrTreeType &	volume,
		typename GridOrTreeType::ValueType	isovalue = `lsutilGridZero<GridOrTreeType>()`
	)

inline

Threaded method to construct a boolean mask that represents interior regions in a signed distance field.

Returns: A shared pointer to either a boolean grid or tree with the same tree configuration and potentially transform as the input volume and whose active and true values correspond to the interior of the input signed distance field.

Parameters

volume	Signed distance field / level set volume.
isovalue	Threshold below which values are considered part of the interior region.

Definition at line 2300 of file LevelSetUtil.h.

template<class GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::sdfToFogVolume	(	GridType &	grid,
		typename GridType::ValueType	cutoffDistance = `lsutilGridMax<GridType>()`
	)

inline

Threaded method to convert a sparse level set/SDF into a sparse fog volume.

For a level set, the active and negative-valued interior half of the narrow band becomes a linear ramp from 0 to 1; the inactive interior becomes active with a constant value of 1; and the exterior, including the background and the active exterior half of the narrow band, becomes inactive with a constant value of 0. The interior, though active, remains sparse.

For a generic SDF, a specified cutoff distance determines the width of the ramp, but otherwise the result is the same as for a level set.

Parameters

grid	level set/SDF grid to transform
cutoffDistance	optional world space cutoff distance for the ramp (automatically clamped if greater than the interior narrow band width)

Definition at line 2184 of file LevelSetUtil.h.

template<typename GridOrTreeType >

void openvdb::OPENVDB_VERSION_NAME::tools::segmentActiveVoxels	(	const GridOrTreeType &	volume,
		std::vector< typename GridOrTreeType::Ptr > &	segments
	)

inline

Separates disjoint active topology components into distinct grids or trees.

Supports volumes with active tiles.

Parameters

volume	Input grid or tree
segments	Output set of disjoint active topology components sorted in descending order based on the active voxel count.

Definition at line 2522 of file LevelSetUtil.h.

template<typename GridOrTreeType >

void openvdb::OPENVDB_VERSION_NAME::tools::segmentSDF	(	const GridOrTreeType &	volume,
		std::vector< typename GridOrTreeType::Ptr > &	segments
	)

inline

Separates disjoint SDF surfaces into distinct grids or trees.

Supports asymmetric interior / exterior narrowband widths and SDF volumes with dense interior regions.

Parameters

volume	Input signed distance field / level set volume
segments	Output set of disjoint SDF surfaces found in volume sorted in descending order based on the surface intersecting voxel count.

Definition at line 2566 of file LevelSetUtil.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::setValueOnMax	(	TreeT &	tree,
		const Coord &	xyz,
		const typename TreeT::ValueType &	value
	)

inline

Set the value of the voxel at the given coordinates in tree to the maximum of its current value and value, and mark the voxel as active.

This is typically significantly faster than calling getValue() followed by setValueOn().

Note: TreeT can be either a Tree or a ValueAccessor.

Definition at line 312 of file ValueTransformer.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::setValueOnMin	(	TreeT &	tree,
		const Coord &	xyz,
		const typename TreeT::ValueType &	value
	)

inline

Set the value of the voxel at the given coordinates in tree to the minimum of its current value and value, and mark the voxel as active.

This is typically significantly faster than calling getValue() followed by setValueOn().

Note: TreeT can be either a Tree or a ValueAccessor.

Definition at line 304 of file ValueTransformer.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::setValueOnMult	(	TreeT &	tree,
		const Coord &	xyz,
		const typename TreeT::ValueType &	value
	)

inline

Set the value of the voxel at the given coordinates in tree to the product of its current value and value, and mark the voxel as active.

This is typically significantly faster than calling getValue() followed by setValueOn().

Note: TreeT can be either a Tree or a ValueAccessor.

Definition at line 328 of file ValueTransformer.h.

template<typename TreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::setValueOnSum	(	TreeT &	tree,
		const Coord &	xyz,
		const typename TreeT::ValueType &	value
	)

inline

Set the value of the voxel at the given coordinates in tree to the sum of its current value and value, and mark the voxel as active.

This is typically significantly faster than calling getValue() followed by setValueOn().

Note: TreeT can be either a Tree or a ValueAccessor.

Definition at line 320 of file ValueTransformer.h.

template<typename TreeOrLeafManagerT >

void openvdb::OPENVDB_VERSION_NAME::tools::signedFloodFill	(	TreeOrLeafManagerT &	tree,
		bool	threaded = `true`,
		size_t	grainSize = `1`,
		Index	minLevel = `0`
	)

inline

Set the values of all inactive voxels and tiles of a narrow-band level set from the signs of the active voxels, setting outside values to +background and inside values to -background.

Warning: This method should only be used on closed, symmetric narrow-band level sets.

Note: If a LeafManager is used the cached leaf nodes are reused, resulting in slightly better overall performance.

Parameters

tree	Tree or LeafManager that will be flood filled.
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)
minLevel	Specify the lowest tree level to process (leafnode level = 0)

Exceptions

TypeError if the ValueType of tree is not floating-point.

Definition at line 294 of file SignedFloodFill.h.

template<typename TreeOrLeafManagerT >

void openvdb::OPENVDB_VERSION_NAME::tools::signedFloodFillWithValues	(	TreeOrLeafManagerT &	tree,
		const typename TreeOrLeafManagerT::ValueType &	outsideWidth,
		const typename TreeOrLeafManagerT::ValueType &	insideWidth,
		bool	threaded = `true`,
		size_t	grainSize = `1`,
		Index	minLevel = `0`
	)

inline

Set the values of all inactive voxels and tiles of a narrow-band level set from the signs of the active voxels, setting exterior values to outsideWidth and interior values to insideWidth. Set the background value of this tree to outsideWidth.

Warning: This method should only be used on closed, narrow-band level sets.

Note: If a LeafManager is used the cached leaf nodes are reused resulting in slightly better overall performance.

Parameters

tree	Tree or LeafManager that will be flood filled
outsideWidth	the width of the outside of the narrow band
insideWidth	the width of the inside of the narrow band
threaded	enable or disable threading (threading is enabled by default)
grainSize	used to control the threading granularity (default is 1)
minLevel	Specify the lowest tree level to process (leafnode level = 0)

Exceptions

TypeError if the ValueType of tree is not floating-point.

Definition at line 280 of file SignedFloodFill.h.

template<typename IterT >

math::Stats openvdb::OPENVDB_VERSION_NAME::tools::statistics	(	const IterT &	iter,
		bool	threaded = `true`
	)

inline

Iterate over a scalar grid and compute statistics (mean, variance, etc.) of the values of the voxels that are visited, or iterate over a vector-valued grid and compute statistics of the magnitudes of the vectors.

Parameters

iter	an iterator over the values of a grid or its tree (`Grid::ValueOnCIter`, `Tree::ValueOffIter`, etc.)
threaded	if true, iterate over the grid in parallel

Definition at line 387 of file Statistics.h.

template<typename IterT , typename ValueOp >

math::Stats openvdb::OPENVDB_VERSION_NAME::tools::statistics	(	const IterT &	iter,
		const ValueOp &	op,
		bool	threaded
	)

inline

Iterate over a grid and compute statistics (mean, variance, etc.) of the values produced by applying the given functor at each voxel that is visited.

Parameters

iter	an iterator over the values of a grid or its tree (`Grid::ValueOnCIter`, `Tree::ValueOffIter`, etc.)
op	a functor of the form `void op(const IterT&, math::Stats&)`, where `IterT` is the type of iter, that inserts zero or more floating-point values into the provided `math::Stats` object
threaded	if true, iterate over the grid in parallel

Note: When threaded is true, each thread gets its own copy of the functor.

Example:: Compute statistics of just the active and positive-valued voxels of a scalar, floating-point grid.
struct Local {

static inline

void addIfPositive(const FloatGrid::ValueOnCIter& iter, math::Stats& stats)

{

const float f = *iter;

if (f > 0.0) {

if (iter.isVoxelValue()) stats.add(f);

else stats.add(f, iter.getVoxelCount());

}

}

};

FloatGrid grid = ...;

math::Stats stats =

tools::statistics(grid.cbeginValueOn(), Local::addIfPositive, /*threaded=*/true);

Definition at line 404 of file Statistics.h.

template<typename GridT >

GridT::template ValueConverter< float >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::topologyToLevelSet	(	const GridT &	grid,
		int	halfWidth = `3`,
		int	closingSteps = `1`,
		int	dilation = `0`,
		int	smoothingSteps = `0`
	)

inline

Compute the narrow-band signed distance to the interface between active and inactive voxels in the input grid.

Returns: A shared pointer to a new sdf / level set grid of type float

Parameters

grid	Input grid of arbitrary type whose active voxels are used in constructing the level set.
halfWidth	Half the width of the narrow band in voxel units.
closingSteps	Number of morphological closing steps used to fill gaps in the active voxel region.
dilation	Number of voxels to expand the active voxel region.
smoothingSteps	Number of smoothing interations.

Definition at line 270 of file TopologyToLevelSet.h.

template<typename GridT , typename InterrupterT >

GridT::template ValueConverter< float >::Type::Ptr openvdb::OPENVDB_VERSION_NAME::tools::topologyToLevelSet	(	const GridT &	grid,
		int	halfWidth = `3`,
		int	closingSteps = `1`,
		int	dilation = `0`,
		int	smoothingSteps = `0`,
		InterrupterT *	interrupt = `NULL`
	)

inline

Compute the narrow-band signed distance to the interface between active and inactive voxels in the input grid.

Returns: A shared pointer to a new sdf / level set grid of type float

Parameters

grid	Input grid of arbitrary type whose active voxels are used in constructing the level set.
halfWidth	Half the width of the narrow band in voxel units.
closingSteps	Number of morphological closing steps used to fill gaps in the active voxel region.
dilation	Number of voxels to expand the active voxel region.
smoothingSteps	Number of smoothing interations.
interrupt	Optional object adhering to the util::NullInterrupter interface.

Definition at line 212 of file TopologyToLevelSet.h.

template<typename FloatTreeT >

void openvdb::OPENVDB_VERSION_NAME::tools::traceExteriorBoundaries ( FloatTreeT & tree )

inline

Traces the exterior voxel boundary of closed objects in the input volume tree. Exterior voxels are marked with a negative sign, voxels with a value below 0.75 are left unchanged and act as the boundary layer.

Note: Does not propagate sign information into tile regions.

Definition at line 3017 of file MeshToVolume.h.

template<typename ValueT , typename OpType >

void openvdb::OPENVDB_VERSION_NAME::tools::transformDense	(	Dense< ValueT, openvdb::tools::LayoutZYX > &	dense,
		const openvdb::CoordBBox &	bbox,
		const OpType &	op,
		bool	parallel = `true`
	)

Apply a point-wise functor to the intersection of a dense grid and a given bounding box

Parameters

dense	A dense grid to be transformed
bbox	Index space bounding box, define region where the transformation is applied
op	A functor that acts on the dense grid value type
parallel	Used to select multithreaded or single threaded Minimally, the `op` class has to support a `operator()` method, // Square values in a grid struct Op { ValueT operator()(const ValueT& in) const { // do work ValueT result = in * in; return result; } }; NB: only Dense grids with memory layout zxy are supported

template<typename ValueT , typename PointwiseOpT >

void openvdb::OPENVDB_VERSION_NAME::tools::transformDense	(	Dense< ValueT, openvdb::tools::LayoutZYX > &	dense,
		const openvdb::CoordBBox &	bbox,
		const PointwiseOpT &	functor,
		bool	parallel
	)

Apply a point-wise functor to the intersection of a dense grid and a given bounding box.

Definition at line 788 of file DenseSparseTools.h.

template<typename InIterT , typename OutGridT , typename XformOp >

void openvdb::OPENVDB_VERSION_NAME::tools::transformValues	(	const InIterT &	inIter,
		OutGridT &	outGrid,
		XformOp &	op,
		bool	threaded = `true`,
		bool	shareOp = `true`,
		MergePolicy	merge = `MERGE_ACTIVE_STATES`
	)

inline

Iterate over a grid and at each step call op(iter, accessor) to populate (via the accessor) the given output grid, whose ValueType need not be the same as the input grid's.

Parameters

inIter	a non-`const` or (preferably) `const` iterator over an input grid or its tree (`Grid::ValueOnCIter`, `Tree::NodeIter`, etc.)
outGrid	an empty grid to be populated
op	a functor of the form `void op(const InIterT&, OutGridT::ValueAccessor&)`, where `InIterT` is the type of inIter
threaded	if true, transform multiple values of the input grid in parallel
shareOp	if true and threaded is true, all threads use the same functor; otherwise, each thread gets its own copy of the original functor
merge	how to merge intermediate results from multiple threads (see Types.h)

Example:: Populate a scalar floating-point grid with the lengths of the vectors from all active voxels of a vector-valued input grid.
struct Local {

static void op(

const Vec3fGrid::ValueOnCIter& iter,

FloatGrid::ValueAccessor& accessor)

{

if (iter.isVoxelValue()) { // set a single voxel

accessor.setValue(iter.getCoord(), iter->length());

} else { // fill an entire tile

CoordBBox bbox;

iter.getBoundingBox(bbox);

accessor.getTree()->fill(bbox, iter->length());

}

}

};

Vec3fGrid inGrid = ...;

FloatGrid outGrid;

tools::transformValues(inGrid.cbeginValueOn(), outGrid, Local::op);

Note: For more complex operations that require finer control over threading, consider using tbb::parallel_for() or tbb::parallel_reduce() in conjunction with a tree::IteratorRange that wraps a grid or tree iterator.

Definition at line 608 of file ValueTransformer.h.

template<typename InIterT , typename OutGridT , typename XformOp >

void openvdb::OPENVDB_VERSION_NAME::tools::transformValues	(	const InIterT &	inIter,
		OutGridT &	outGrid,
		const XformOp &	op,
		bool	threaded = `true`,
		bool	shareOp = `true`,
		MergePolicy	merge = `MERGE_ACTIVE_STATES`
	)

inline

Definition at line 627 of file ValueTransformer.h.

template<typename GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::transformVectors	(	GridType &	grid,
		const Mat4d &	mat
	)

inline

Apply an affine transform to the voxel values of a vector-valued grid in accordance with the grid's vector type (covariant, contravariant, etc.).

Exceptions

TypeError if the grid is not vector-valued

Definition at line 152 of file VectorTransformer.h.

template<class GridType >

bool openvdb::OPENVDB_VERSION_NAME::tools::uniqueInactiveValues	(	const GridType &	grid,
		std::vector< typename GridType::ValueType > &	values,
		size_t	numValues
	)

Threaded method to find unique inactive values.

Parameters

grid	A VDB volume.
values	List of unique inactive values, returned by this method.
numValues	Number of values to look for.

Returns: false if the grid has more than numValues inactive values.

Definition at line 1314 of file Diagnostics.h.

template<typename GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::volumeToMesh	(	const GridType &	grid,
		std::vector< Vec3s > &	points,
		std::vector< Vec4I > &	quads,
		double	isovalue = `0.0`
	)

inline

Uniformly mesh any scalar grid that has a continuous isosurface.

Parameters

grid	a scalar grid to mesh
points	output list of world space points
quads	output quad index list
isovalue	determines which isosurface to mesh

Exceptions

TypeError if grid does not have a scalar value type

Definition at line 5277 of file VolumeToMesh.h.

template<typename GridType >

void openvdb::OPENVDB_VERSION_NAME::tools::volumeToMesh	(	const GridType &	grid,
		std::vector< Vec3s > &	points,
		std::vector< Vec3I > &	triangles,
		std::vector< Vec4I > &	quads,
		double	isovalue = `0.0`,
		double	adaptivity = `0.0`,
		bool	relaxDisorientedTriangles = `true`
	)

inline

Adaptively mesh any scalar grid that has a continuous isosurface.

Parameters

grid	a scalar grid to mesh
points	output list of world space points
triangles	output triangle index list
quads	output quad index list
isovalue	determines which isosurface to mesh
adaptivity	surface adaptivity threshold [0 to 1]
relaxDisorientedTriangles	toggle relaxing disoriented triangles during adaptive meshing.

Exceptions

TypeError if grid does not have a scalar value type

Definition at line 5262 of file VolumeToMesh.h.

Namespaces
	activation

	clip_internal

	composite

	diagnostics_internal

	ds

	filter_internal

	gridop

	internal

	level_set_fracture_internal

	level_set_util_internal

	local_util

	lstrack

	mask_internal

	mesh_to_volume_internal

	p2ls_internal

	particle_atlas_internal

	point_index_grid_internal

	point_partitioner_internal

	poisson

	potential_flow_internal

	Scheme

	stats_internal

	ttls_internal

	v2s_internal

	valxform

	volume_to_mesh_internal

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Typedef Documentation

Enumeration Type Documentation

Function Documentation