#include <curves.h>

Inheritance diagram for UsdGeomCurves:

Public Member Functions
	UsdGeomCurves (const UsdPrim &prim=UsdPrim())

	UsdGeomCurves (const UsdSchemaBase &schemaObj)

virtual USDGEOM_API	~UsdGeomCurves ()
	Destructor. More...

USDGEOM_API UsdAttribute	GetCurveVertexCountsAttr () const

USDGEOM_API UsdAttribute	CreateCurveVertexCountsAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetWidthsAttr () const

USDGEOM_API UsdAttribute	CreateWidthsAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API TfToken	GetWidthsInterpolation () const

USDGEOM_API bool	SetWidthsInterpolation (TfToken const &interpolation)

USDGEOM_API size_t	GetCurveCount (UsdTimeCode timeCode=UsdTimeCode::Default()) const

Public Member Functions inherited from UsdGeomPointBased
	UsdGeomPointBased (const UsdPrim &prim=UsdPrim())

	UsdGeomPointBased (const UsdSchemaBase &schemaObj)

virtual USDGEOM_API	~UsdGeomPointBased ()
	Destructor. More...

USDGEOM_API UsdAttribute	GetPointsAttr () const

USDGEOM_API UsdAttribute	CreatePointsAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetVelocitiesAttr () const

USDGEOM_API UsdAttribute	CreateVelocitiesAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetAccelerationsAttr () const

USDGEOM_API UsdAttribute	CreateAccelerationsAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetNormalsAttr () const

USDGEOM_API UsdAttribute	CreateNormalsAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API TfToken	GetNormalsInterpolation () const

USDGEOM_API bool	SetNormalsInterpolation (TfToken const &interpolation)

USDGEOM_API bool	ComputePointsAtTime (VtArray< GfVec3f > *points, const UsdTimeCode time, const UsdTimeCode baseTime) const

USDGEOM_API bool	ComputePointsAtTimes (std::vector< VtArray< GfVec3f >> *pointsArray, const std::vector< UsdTimeCode > &times, const UsdTimeCode baseTime) const

Public Member Functions inherited from UsdGeomGprim
	UsdGeomGprim (const UsdPrim &prim=UsdPrim())

	UsdGeomGprim (const UsdSchemaBase &schemaObj)

virtual USDGEOM_API	~UsdGeomGprim ()
	Destructor. More...

USDGEOM_API UsdAttribute	GetDisplayColorAttr () const

USDGEOM_API UsdAttribute	CreateDisplayColorAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetDisplayOpacityAttr () const

USDGEOM_API UsdAttribute	CreateDisplayOpacityAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetDoubleSidedAttr () const

USDGEOM_API UsdAttribute	CreateDoubleSidedAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetOrientationAttr () const

USDGEOM_API UsdAttribute	CreateOrientationAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdGeomPrimvar	GetDisplayColorPrimvar () const

USDGEOM_API UsdGeomPrimvar	CreateDisplayColorPrimvar (const TfToken &interpolation=TfToken(), int elementSize=-1) const

USDGEOM_API UsdGeomPrimvar	GetDisplayOpacityPrimvar () const

USDGEOM_API UsdGeomPrimvar	CreateDisplayOpacityPrimvar (const TfToken &interpolation=TfToken(), int elementSize=-1) const

Public Member Functions inherited from UsdGeomBoundable
	UsdGeomBoundable (const UsdPrim &prim=UsdPrim())

	UsdGeomBoundable (const UsdSchemaBase &schemaObj)

virtual USDGEOM_API	~UsdGeomBoundable ()
	Destructor. More...

USDGEOM_API UsdAttribute	GetExtentAttr () const

USDGEOM_API UsdAttribute	CreateExtentAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API bool	ComputeExtent (const UsdTimeCode &time, VtVec3fArray *extent)

Public Member Functions inherited from UsdGeomXformable
	UsdGeomXformable (const UsdPrim &prim=UsdPrim())

	UsdGeomXformable (const UsdSchemaBase &schemaObj)

virtual USDGEOM_API	~UsdGeomXformable ()
	Destructor. More...

USDGEOM_API UsdAttribute	GetXformOpOrderAttr () const

USDGEOM_API UsdAttribute	CreateXformOpOrderAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdGeomXformOp	AddXformOp (UsdGeomXformOp::Type const opType, UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionDouble, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddTranslateOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionDouble, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddScaleOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateXOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateYOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateZOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateXYZOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateXZYOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateYXZOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateYZXOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateZXYOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddRotateZYXOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddOrientOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionFloat, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API UsdGeomXformOp	AddTransformOp (UsdGeomXformOp::Precision const precision=UsdGeomXformOp::PrecisionDouble, TfToken const &opSuffix=TfToken(), bool isInverseOp=false) const

USDGEOM_API bool	SetResetXformStack (bool resetXform) const

USDGEOM_API bool	GetResetXformStack () const

USDGEOM_API bool	SetXformOpOrder (std::vector< UsdGeomXformOp > const &orderedXformOps, bool resetXformStack=false) const

USDGEOM_API std::vector < UsdGeomXformOp >	GetOrderedXformOps (bool *resetsXformStack) const

USDGEOM_API bool	ClearXformOpOrder () const
	Clears the local transform stack. More...

USDGEOM_API UsdGeomXformOp	MakeMatrixXform () const

USDGEOM_API bool	TransformMightBeTimeVarying () const

USDGEOM_API bool	TransformMightBeTimeVarying (const std::vector< UsdGeomXformOp > &ops) const

USDGEOM_API bool	GetTimeSamples (std::vector< double > *times) const

USDGEOM_API bool	GetTimeSamplesInInterval (const GfInterval &interval, std::vector< double > *times) const

USDGEOM_API bool	GetLocalTransformation (GfMatrix4d transform, bool resetsXformStack, const UsdTimeCode time=UsdTimeCode::Default()) const

USDGEOM_API bool	GetLocalTransformation (GfMatrix4d transform, bool resetsXformStack, const std::vector< UsdGeomXformOp > &ops, const UsdTimeCode time=UsdTimeCode::Default()) const

Public Member Functions inherited from UsdGeomImageable
	UsdGeomImageable (const UsdPrim &prim=UsdPrim())

	UsdGeomImageable (const UsdSchemaBase &schemaObj)

virtual USDGEOM_API	~UsdGeomImageable ()
	Destructor. More...

USDGEOM_API UsdAttribute	GetVisibilityAttr () const

USDGEOM_API UsdAttribute	CreateVisibilityAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdAttribute	GetPurposeAttr () const

USDGEOM_API UsdAttribute	CreatePurposeAttr (VtValue const &defaultValue=VtValue(), bool writeSparsely=false) const

USDGEOM_API UsdRelationship	GetProxyPrimRel () const

USDGEOM_API UsdRelationship	CreateProxyPrimRel () const

USDGEOM_API void	MakeVisible (const UsdTimeCode &time=UsdTimeCode::Default()) const

USDGEOM_API void	MakeInvisible (const UsdTimeCode &time=UsdTimeCode::Default()) const

USDGEOM_API TfToken	ComputeVisibility (UsdTimeCode const &time=UsdTimeCode::Default()) const

USDGEOM_API UsdAttribute	GetPurposeVisibilityAttr (const TfToken &purpose=UsdGeomTokens->default_) const

USDGEOM_API TfToken	ComputeEffectiveVisibility (const TfToken &purpose=UsdGeomTokens->default_, const UsdTimeCode &time=UsdTimeCode::Default()) const

USDGEOM_API PurposeInfo	ComputePurposeInfo () const

USDGEOM_API PurposeInfo	ComputePurposeInfo (const PurposeInfo &parentPurposeInfo) const

USDGEOM_API TfToken	ComputePurpose () const

USDGEOM_API UsdPrim	ComputeProxyPrim (UsdPrim *renderPrim=NULL) const

USDGEOM_API bool	SetProxyPrim (const UsdPrim &proxy) const

USDGEOM_API bool	SetProxyPrim (const UsdSchemaBase &proxy) const

USDGEOM_API GfBBox3d	ComputeWorldBound (UsdTimeCode const &time, TfToken const &purpose1=TfToken(), TfToken const &purpose2=TfToken(), TfToken const &purpose3=TfToken(), TfToken const &purpose4=TfToken()) const

USDGEOM_API GfBBox3d	ComputeLocalBound (UsdTimeCode const &time, TfToken const &purpose1=TfToken(), TfToken const &purpose2=TfToken(), TfToken const &purpose3=TfToken(), TfToken const &purpose4=TfToken()) const

USDGEOM_API GfBBox3d	ComputeUntransformedBound (UsdTimeCode const &time, TfToken const &purpose1=TfToken(), TfToken const &purpose2=TfToken(), TfToken const &purpose3=TfToken(), TfToken const &purpose4=TfToken()) const

USDGEOM_API GfMatrix4d	ComputeLocalToWorldTransform (UsdTimeCode const &time) const

USDGEOM_API GfMatrix4d	ComputeParentToWorldTransform (UsdTimeCode const &time) const

Public Member Functions inherited from UsdTyped
	UsdTyped (const UsdPrim &prim=UsdPrim())

	UsdTyped (const UsdSchemaBase &schemaObj)

virtual USD_API	~UsdTyped ()
	Destructor. More...

Public Member Functions inherited from UsdSchemaBase
bool	IsConcrete () const

bool	IsTyped () const

bool	IsAPISchema () const
	Returns whether this is an API schema or not. More...

bool	IsAppliedAPISchema () const

bool	IsMultipleApplyAPISchema () const

UsdSchemaKind	GetSchemaKind () const
	Returns the kind of schema this class is. More...

USD_API	UsdSchemaBase (const UsdPrim &prim=UsdPrim())
	Construct and store `prim` as the held prim. More...

USD_API	UsdSchemaBase (const UsdSchemaBase &otherSchema)
	Construct and store for the same prim held by `otherSchema`. More...

virtual USD_API	~UsdSchemaBase ()
	Destructor. More...

USD_API	operator bool () const

UsdPrim	GetPrim () const
	Return this schema object's held prim. More...

SdfPath	GetPath () const
	Shorthand for GetPrim()->GetPath(). More...

USD_API const UsdPrimDefinition *	GetSchemaClassPrimDefinition () const

Static Public Member Functions
static USDGEOM_API const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

static USDGEOM_API UsdGeomCurves	Get (const UsdStagePtr &stage, const SdfPath &path)

static USDGEOM_API bool	ComputeExtent (const VtVec3fArray &points, const VtFloatArray &widths, VtVec3fArray *extent)

static USDGEOM_API bool	ComputeExtent (const VtVec3fArray &points, const VtFloatArray &widths, const GfMatrix4d &transform, VtVec3fArray *extent)

Static Public Member Functions inherited from UsdGeomPointBased
static USDGEOM_API const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

static USDGEOM_API UsdGeomPointBased	Get (const UsdStagePtr &stage, const SdfPath &path)

static USDGEOM_API bool	ComputeExtent (const VtVec3fArray &points, VtVec3fArray *extent)

static USDGEOM_API bool	ComputeExtent (const VtVec3fArray &points, const GfMatrix4d &transform, VtVec3fArray *extent)

static USDGEOM_API bool	ComputePointsAtTime (VtArray< GfVec3f > *points, UsdStageWeakPtr &stage, UsdTimeCode time, const VtVec3fArray &positions, const VtVec3fArray &velocities, UsdTimeCode velocitiesSampleTime, const VtVec3fArray &accelerations, float velocityScale=1.0)

Static Public Member Functions inherited from UsdGeomGprim
static USDGEOM_API const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

static USDGEOM_API UsdGeomGprim	Get (const UsdStagePtr &stage, const SdfPath &path)

Static Public Member Functions inherited from UsdGeomBoundable
static USDGEOM_API const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

static USDGEOM_API UsdGeomBoundable	Get (const UsdStagePtr &stage, const SdfPath &path)

static USDGEOM_API bool	ComputeExtentFromPlugins (const UsdGeomBoundable &boundable, const UsdTimeCode &time, VtVec3fArray *extent)

static USDGEOM_API bool	ComputeExtentFromPlugins (const UsdGeomBoundable &boundable, const UsdTimeCode &time, const GfMatrix4d &transform, VtVec3fArray *extent)

Static Public Member Functions inherited from UsdGeomXformable
static USDGEOM_API const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

static USDGEOM_API UsdGeomXformable	Get (const UsdStagePtr &stage, const SdfPath &path)

static USDGEOM_API bool	GetTimeSamples (std::vector< UsdGeomXformOp > const &orderedXformOps, std::vector< double > *times)

static USDGEOM_API bool	GetTimeSamplesInInterval (std::vector< UsdGeomXformOp > const &orderedXformOps, const GfInterval &interval, std::vector< double > *times)

static USDGEOM_API bool	GetLocalTransformation (GfMatrix4d *transform, std::vector< UsdGeomXformOp > const &ops, const UsdTimeCode time)

static USDGEOM_API bool	IsTransformationAffectedByAttrNamed (const TfToken &attrName)

Static Public Member Functions inherited from UsdGeomImageable
static USDGEOM_API const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

static USDGEOM_API UsdGeomImageable	Get (const UsdStagePtr &stage, const SdfPath &path)

static USDGEOM_API const TfTokenVector &	GetOrderedPurposeTokens ()

Static Public Member Functions inherited from UsdTyped
static USD_API const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

static USD_API UsdTyped	Get (const UsdStagePtr &stage, const SdfPath &path)

Static Public Member Functions inherited from UsdSchemaBase
static const TfTokenVector &	GetSchemaAttributeNames (bool includeInherited=true)

Static Public Attributes
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractTyped

Static Public Attributes inherited from UsdGeomPointBased
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractTyped

Static Public Attributes inherited from UsdGeomGprim
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractTyped

Static Public Attributes inherited from UsdGeomBoundable
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractTyped

Static Public Attributes inherited from UsdGeomXformable
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractTyped

Static Public Attributes inherited from UsdGeomImageable
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractTyped

Static Public Attributes inherited from UsdTyped
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractBase

Static Public Attributes inherited from UsdSchemaBase
static const UsdSchemaKind	schemaKind = UsdSchemaKind::AbstractBase

Protected Member Functions
USDGEOM_API UsdSchemaKind	_GetSchemaKind () const override

Protected Member Functions inherited from UsdGeomPointBased
USDGEOM_API UsdSchemaKind	_GetSchemaKind () const override

Protected Member Functions inherited from UsdGeomXformable
USDGEOM_API UsdSchemaKind	_GetSchemaKind () const override

Protected Member Functions inherited from UsdTyped
USD_API bool	_IsCompatible () const override

Protected Member Functions inherited from UsdSchemaBase
virtual UsdSchemaKind	_GetSchemaType () const

const TfType &	_GetType () const

USD_API UsdAttribute	_CreateAttr (TfToken const &attrName, SdfValueTypeName const &typeName, bool custom, SdfVariability variability, VtValue const &defaultValue, bool writeSparsely) const

Friends
class	UsdSchemaRegistry

Detailed Description

Base class for UsdGeomBasisCurves, UsdGeomNurbsCurves, and UsdGeomHermiteCurves. The BasisCurves schema is designed to be analagous to offline renderers' notion of batched curves (such as the classical RIB definition via Basis and Curves statements), while the NurbsCurve schema is designed to be analgous to the NURBS curves found in packages like Maya and Houdini while retaining their consistency with the RenderMan specification for NURBS Patches. HermiteCurves are useful for the interchange of animation guides and paths.

It is safe to use the length of the curve vertex count to derive the number of curves and the number and layout of curve vertices, but this schema should NOT be used to derive the number of curve points. While vertex indices are implicit in all shipped descendent types of this schema, one should not assume that all internal or future shipped schemas will follow this pattern. Be sure to key any indexing behavior off the concrete type, not this abstract type.

Definition at line 75 of file curves.h.

Constructor & Destructor Documentation

UsdGeomCurves::UsdGeomCurves ( const UsdPrim & prim = UsdPrim() )

inlineexplicit

Construct a UsdGeomCurves on UsdPrim prim . Equivalent to UsdGeomCurves::Get(prim.GetStage(), prim.GetPath()) for a valid prim, but will not immediately throw an error for an invalid prim

Definition at line 87 of file curves.h.

UsdGeomCurves::UsdGeomCurves ( const UsdSchemaBase & schemaObj )

inlineexplicit

Construct a UsdGeomCurves on the prim held by schemaObj . Should be preferred over UsdGeomCurves(schemaObj.GetPrim()), as it preserves SchemaBase state.

Definition at line 95 of file curves.h.

virtual USDGEOM_API UsdGeomCurves::~UsdGeomCurves ( )

virtual

Destructor.

Member Function Documentation

USDGEOM_API UsdSchemaKind UsdGeomCurves::_GetSchemaKind ( ) const

overrideprotectedvirtual

Returns the kind of schema this class belongs to.

See Also: UsdSchemaKind

Reimplemented from UsdGeomBoundable.

Reimplemented in UsdGeomHermiteCurves, and UsdGeomNurbsCurves.

static USDGEOM_API bool UsdGeomCurves::ComputeExtent	(	const VtVec3fArray &	points,
		const VtFloatArray &	widths,
		VtVec3fArray *	extent
	)

static

Compute the extent for the curves defined by points and widths.

Returns: true upon success, false if unable to calculate extent.

On success, extent will contain an approximate axis-aligned bounding box of the curve defined by points with the given widths.

This function is to provide easy authoring of extent for usd authoring tools, hence it is static and acts outside a specific prim (as in attribute based methods).

static USDGEOM_API bool UsdGeomCurves::ComputeExtent	(	const VtVec3fArray &	points,
		const VtFloatArray &	widths,
		const GfMatrix4d &	transform,
		VtVec3fArray *	extent
	)

static

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Computes the extent as if the matrix transform was first applied.

USDGEOM_API UsdAttribute UsdGeomCurves::CreateCurveVertexCountsAttr	(	VtValue const &	defaultValue = `VtValue()`,
		bool	writeSparsely = `false`
	)		const

See GetCurveVertexCountsAttr(), and also Usd_Create_Or_Get_Property for when to use Get vs Create. If specified, author defaultValue as the attribute's default, sparsely (when it makes sense to do so) if writeSparsely is true - the default for writeSparsely is false.

USDGEOM_API UsdAttribute UsdGeomCurves::CreateWidthsAttr	(	VtValue const &	defaultValue = `VtValue()`,
		bool	writeSparsely = `false`
	)		const

See GetWidthsAttr(), and also Usd_Create_Or_Get_Property for when to use Get vs Create. If specified, author defaultValue as the attribute's default, sparsely (when it makes sense to do so) if writeSparsely is true - the default for writeSparsely is false.

static USDGEOM_API UsdGeomCurves UsdGeomCurves::Get	(	const UsdStagePtr &	stage,
		const SdfPath &	path
	)

static

Return a UsdGeomCurves holding the prim adhering to this schema at path on stage. If no prim exists at path on stage, or if the prim at that path does not adhere to this schema, return an invalid schema object. This is shorthand for the following:

UsdGeomCurves(stage->GetPrimAtPath(path));

USDGEOM_API size_t UsdGeomCurves::GetCurveCount ( UsdTimeCode timeCode = UsdTimeCode::Default() ) const

Returns the number of curves as defined by the size of the curveVertexCounts array at timeCode.

snippets.dox GetCount

See Also: GetCurveVertexCountsAttr()

USDGEOM_API UsdAttribute UsdGeomCurves::GetCurveVertexCountsAttr ( ) const

Curves-derived primitives can represent multiple distinct, potentially disconnected curves. The length of 'curveVertexCounts' gives the number of such curves, and each element describes the number of vertices in the corresponding curve


Declaration	`int[] curveVertexCounts`
C++ Type	VtArray<int>
Usd Type	SdfValueTypeNames->IntArray

static USDGEOM_API const TfTokenVector& UsdGeomCurves::GetSchemaAttributeNames ( bool includeInherited = true )

static

Return a vector of names of all pre-declared attributes for this schema class and all its ancestor classes. Does not include attributes that may be authored by custom/extended methods of the schemas involved.

USDGEOM_API UsdAttribute UsdGeomCurves::GetWidthsAttr ( ) const

Provides width specification for the curves, whose application will depend on whether the curve is oriented (normals are defined for it), in which case widths are "ribbon width", or unoriented, in which case widths are cylinder width. 'widths' is not a generic Primvar, but the number of elements in this attribute will be determined by its 'interpolation'. See SetWidthsInterpolation() . If 'widths' and 'primvars:widths' are both specified, the latter has precedence.


Declaration	`float[] widths`
C++ Type	VtArray<float>
Usd Type	SdfValueTypeNames->FloatArray

USDGEOM_API TfToken UsdGeomCurves::GetWidthsInterpolation ( ) const

Get the interpolation for the widths attribute.

Although 'widths' is not classified as a generic UsdGeomPrimvar (and will not be included in the results of UsdGeomPrimvarsAPI::GetPrimvars() ) it does require an interpolation specification. The fallback interpolation, if left unspecified, is UsdGeomTokens->vertex , which means a width value is specified at the end of each curve segment.

USDGEOM_API bool UsdGeomCurves::SetWidthsInterpolation ( TfToken const & interpolation )

Set the interpolation for the widths attribute.

Returns: true upon success, false if interpolation is not a legal value as defined by UsdPrimvar::IsValidInterpolation(), or if there was a problem setting the value. No attempt is made to validate that the widths attr's value contains the right number of elements to match its interpolation to its prim's topology.