The input stream to pass to the output.
When set to
0, the first set of 3 inputs is passed to the outputs.
When set to
1, the second set of 3 inputs is passed to the outputs.
Adapts a character’s skeleton to conform to terrain.
Removes elements while trying to maintain the overall appearance.
Creates Points or Polygons, or adds points/polys to an input.
Creates agent primitives.
Extracts animation or MotionClips from an agent primitive.
Extracts the rest geometry, skeleton, and animation from an agent primitive.
Adds new clips to agent primitives.
Defines how agents' animation clips should be played back.
Creates geometry describing possible transitions between animation clips.
Creates a new agent layer that is suitable for collision detection.
Creates point attributes that specify the rotation limits of an agent’s joints.
Builds a constraint network to hold an agent’s limbs together.
Writes agent definition files to disk.
Edits properties of agent primitives.
Adds new shapes and layers to an agent primitive.
Adjusts the head of an agent to look at a specific object or position.
Adds custom data to an agent definition.
Updates an agent primitive’s pose from a geometry skeleton.
Adds various common point attributes to agents for use by other crowd nodes.
Provides simple proxy geometry for an agent.
Creates parent-child relationships between agents.
Adapts agents' legs to conform to terrain and prevent the feet from sliding.
Adds new transform groups to agent primitives.
Extracts geometry from agent primitives.
Extracts geometry from agent primitives for a Vellum simulation.
Creates an agent primitive from a geometry skeleton.
Loads the geometry from an Alembic scene archive (.abc) file into a geometry network.
Creates a geometry group for Alembic primitives.
Modifies intrinsic properties of Alembic primitives.
Cleans up a series of break operations and creates the resulting pieces.
Creates control geometry for SOP-based KineFX rigs.
Modifies values for a vector-type color attribute on the incoming geometry.
Modifies dictionary attribute values.
Modifies floating point attribute values on the incoming geometry.
Modifies integer attribute values on the incoming geometry.
Modifies values for a vector-type attribute on the incoming geometry.
Blurs out (or relaxes) points in a mesh or a point cloud.
Changes the size/precision Houdini uses to store an attribute.
Combines multiple attributes within one geometry into a new attribute.
Composites vertex, point, primitive, and/or detail attributes between two or more selections.
Copies attributes between groups of vertices, points, or primitives.
Adds or edits user defined attributes.
Deletes point and primitive attributes.
Allows simple VEX expressions to modify attributes.
Fades a point attribute in and out over time.
A low-level node that can solve combinatorial versions of some partial differential equations on an edge-connected point cloud.
Assigns an attribute to points specifying which of a set of models should be copied/instanced to that point, randomly or based on various rules.
Interpolates attributes within primitives or based on explicit weights.
Copies and flips attributes from one side of a plane to another.
Adds or generates noise in geometry attributes.
Interactively paint point attributes, such as color or deformation mask values, directly on geometry.
Promotes or demotes attributes from one geometry level to another.
Generates random attribute values of various distributions.
Fits an attribute’s values to a new range.
Renames or deletes point and primitive attributes.
Modifies point attributes based on differences between two models.
Edits string attribute values.
Copies, moves, or swaps the contents of attributes.
Transfers vertex, point, primitive, and/or detail attributes between two models.
Transfers attributes between two geometries based on UV proximity.
Computes transform matrices using vector and matrix point attributes.
Decomposes transform point attributes into their component pieces and applies an Euler filter to the rotation component
Runs a VOP network to modify geometry attributes.
Runs a VEX snippet to modify attribute values.
Samples texture map information to a point attribute.
Creates a dictionary attribute filled with parameter values.
Copies information from a volume onto the point attributes of another piece of geometry, with optional remapping.
Converts primitives for ODE and Bullet solvers.
Computes lighting values within volume primitives
Generates ballistic projectile paths from the incoming points.
Applies deformations to captured geometry such as bend, twist, taper, and squash/stretch.
Deletes primitives, points, edges or breakpoints.
Computes a 3D metamorphosis between shapes with the same topology.
The start of a looping block.
The start of a compile block.
The end/output of a looping block.
The end/output of a compile block.
Supports Bone Deform by assigning capture weights to bones.
Supports Bone Deform by assigning capture weights to points based on biharmonic functions on tetrahedral meshes.
Utility node that supports Bone Capture Biharmonic by creating lines from bones with suitable attributes.
Supports Bone Deform by assigning capture weights to points based on distance to bones.
Uses capture attributes created from bones to deform geometry according to their movement.
Creates default geometry for Bone objects.
Combines two polygonal objects with boolean operators, or finds the intersection lines between two polygonal objects.
Fractures the input geometry using cutting surfaces.
Creates a bounding box, sphere, or rectangle for the input geometry.
Creates a cube or six-sided rectangular box.
Deforms the points in the first input using one or more magnets from the second input.
Imports 2d geometry from a Composite network.
Records and caches its input geometry for faster playback.
Chooses whether to cook the input or re-use cached output based on configurable conditions.
Converts array attributes into a single index-pair capture attribute.
Converts a single index-pair capture attribute into per-point and detail array attributes.
Adjusts capture regions and capture weights.
Lets you paint capture attributes directly onto geometry.
Copies capture attributes from one half of a symmetric model to the other.
Overrides the capture weights on individual points.
Rigidly capture input packed geometry to a SOP skeleton.
Supports Capture and Deform operation by creating a volume within which points are captured to a bone.
Slices, cuts or extracts points or cross-sections from a primitive.
Repeats one or more pieces of geometry along a curve.
Reads sample data from a chop and converts it into point positions and point attributes.
Applies blend shapes to a KineFX character’s geometry using the weight attributes on its skeleton.
Adds blend shapes to a character’s skin geometry.
Outputs one of a character mesh’s blend shapes.
Packs Character mesh, capture pose and animation, saves them to disk, and loads them back again.
Creates a packed geometry primitive from a rest geometry, skeleton, and animation inputs.
Extracts the rest geometry, skeleton, and animation from an packed geometry primitive.
Creates open or closed arcs, circles and ellipses.
Evaluate and resample blended interpolating splines defined by one or more control polygons.
Transforms selected geometry into a circle.
Helps clean up dirty models.
Removes or groups geometry on one side of a plane, or creases geometry along a plane.
Captures low-res simulated cloth.
Deforms geometry captured by the Cloth Capture SOP.
Creates a volume representation of source geometry.
Fills a volume with a diffuse light.
Applies a cloud like noise to a Fog volume.
Low-level machinery to cluster points based on their positions (or any vector attribute).
Higher-level node to cluster points based on their positions (or any vector attribute).
Creates geometry and VDB volumes for use with DOPs collisions.
Adds color attributes to geometry.
Adjust surface point normals by painting.
Evaluates a multiparm of transform parameters and applies them to the input skeleton.
Recomputes world space or local space transforms for points in a hierarchy.
Edits properties of a skeleton animation or motion clip.
Configures joint properties like local center of mass and transformation limits and creates a center of mass joint.
Determines which input skeleton components are visible for a KineFX character.
Creates lines between nearby pieces.
Creates an attribute with a unique value for each set of connected primitives or points.
Creates simple geometry for use as control shapes.
Converts geometry from one geometry type to another.
Converts a 2D height field to a 3D VDB volume, polygon surface, or polygon soup surface.
Converts the input geometry into line segments.
Polygonizes metaball geometry.
Generates the oriented surface of a tetrahedron mesh.
Converts sparse volumes.
Converts a Point Cloud into a VDB Points Primitive, or vice versa.
Converts the iso-surface of a volume into a polygonal surface.
Decomposes the input geometry into approximate convex segments.
Copies geometry and applies transformations to the copies.
Copies geometry in the first input onto curves of the second input.
Copies geometry in the first input onto the points of the second input.
Creates multiple copies of the input geometry, or copies the geometry onto the points of the second input.
Manually adds or removes a creaseweight attribute to/from polygon edges, for use with the Subdivide SOP.
Creates a surface around cross sections.
Assigns layers to a crowd to produce geometry variations.
Populates a crowd of agent primitives.
Lets you interactively draw Bézier curves using tools similar to 2D illustration programs, as well as polylines and NURBS.
Finds the intersections (or points of minimum distance) between two or more curves or faces.
Imports fields from DOP simulations, saves them to disk, and loads them back again.
Imports scalar and vector fields from a DOP simulation.
Imports option and record data from DOP simulations into points with point attributes.
Generates point emission sources for debris, pyro, or particle sources from separating fractured rigid body objects.
Runs a VEX snippet to deform geometry.
Deletes input geometry by group, entity number, bounding volume, primitive/point/edge normals, and/or degeneracy.
Delete Joints on a SOP Rig.
Smooths out (or relaxes) point deformations.
Uses machine-learning algorithms to denoise images with high quality and speed.
Attempts to prevent collisions when deforming geometry.
Removes edges from the input polygonal geometry merging polygons with shared edges.
Measures the distance of the shortest path along the geometry’s edges or surfaces from each start point.
Measures distance between each point and a reference geometry.
Measures distance of each point from a target.
Divides, smooths, and triangulates polygons.
Imports and transforms geometry based on information extracted from a DOP simulation.
Creates a curve based on user input in the viewport.
Dynamically Time-warps the first input (the Source) using the second input (the Reference) as a reference.
Culls the input geometry according to the specifications of the For Each SOP.
Collapses edges and faces to their centerpoints.
Sharpens edges by uniquing their points and recomputing point normals.
Inserts points on the edges of polygons and optionally connects them.
Transforms selected edges so that all edges are of equal length.
Flips the direction of polygon edges.
Cuts geometry along edges using guiding curves.
Straightens selected edges.
Copies and optionally modifies attribute values along edges networks and curves.
Edits points, edges, or faces interactively.
Closes, opens, or clamps end points.
Sets an attribute on selected points or primitives to sequential numbers or strings.
Generates a message, warning, or error, which can show up on a parent asset.
Pushes geometry out from the center to create an exploded view.
Export transform attributes to object nodes.
Computes the centroid of each piece of the geometry.
Extracts translation and orientation from a character using a given input joint.
Creates new points where an interpolated attribute has a certain value on a curve.
Extracts the t-pose position from the input bone, muscle, or tissue geometry.
Computes the best-fit transform between two pieces of geometry.
Extrudes geometry along a normal.
Extrudes surface geometry into a volume.
Configures joint properties used by full-body inverse kinematics solvers.
Import animation from an FBX file as a geometry-based skeleton.
Import a skinned character from an FBX file with animation.
Import skin geometry from an FBX file.
Deforms a solid piece of geometry (tetrahedral mesh) using the FEM quasistatic solver.
Visualizes the quality of a tetrahedral mesh.
Transfer forward kinematic motion to a SOP-based skeleton
Creates a surface or density VDB for sourcing FLIP simulations.
Controls the smoothness of faceting of a surface.
Defines the fiber direction vector for input solid muscle geometry.
Evolves polygonal curves as vortex filaments.
Reads, writes, or caches geometry on disk.
Caches (writes out once and then reads from) geometry (possibly animated) to disk.
Caches (writes out once and then reads from) geometry (possibly animated) to disk.
Reads and collates data from disk.
Reads and collates data from disk.
Finds the shortest paths from start points to end points, following the edges of a surface.
Compresses the output of fluid simulations to decrease size on disk
Creates 3D text from Type 1, TrueType and OpenType fonts.
Uses a metaball to attract or repel points or springs.
Creates jagged mountain-like divisions of the input geometry.
Transfer a motion to a SOP-based skeleton using full-body inverse kinematics algorithm.
Creates a set of hair-like curves across a surface.
Merges or snaps points.
Geometry nodes live inside Geo objects and generate geometry.
Adds strength to a glue constraint network according to cluster values.
Generates particles to be used as sources in a particle-based grain simulation.
Assigns a unique integer attribute to non-touching components.
Creates planar geometry.
Blends the guides and skin of two grooms.
Fetches groom data from grooming objects.
Packs the components of a groom into a set of named Packed Primitives for the purpose of writing it to disk.
Switches between all components of two groom streams.
Unpacks the components of a groom from a packed groom.
Generates groups of points, primitives, edges, or vertices according to various criteria.
Combines point groups, primitive groups, or edge groups according to boolean operations.
Copies groups between two pieces of geometry, based on point/primitive numbers.
Deletes groups of points, primitives, edges, or vertices according to patterns.
Expands or shrinks groups of Edges, Points, Primitives, or Vertices.
Runs VEX expressions to modify group membership.
Constructs groups for paths between elements.
Group Joints on a SOP Rig.
Sets group membership interactively by painting.
Converts point, primitive, edge, or vertex groups into point, primitive, edge, or vertex groups.
Groups points and primitives by ranges.
Renames groups according to patterns.
Transfers groups between two pieces of geometry, based on proximity.
Groups points and primitives by lasso.
Creates a group that includes the boundaries of the specified attribute.
Advects guide points through a velocity volume.
Resolves collisions of guide curves with VDB signed distance fields.
Deforms geometry with an animated skin and optionally guide curves.
Interactively creates and modifies guide curves.
Creates standard primitive groups used by grooming tools.
Quickly give hair guides some initial direction.
Creates masking attributes for other grooming operations.
Creates and prepares parting lines for use with hair generation.
Modifies guide or hair using one or more operations.
Looks up skin geometry attributes under the root point of guide curves.
Constructs a coherent tangent space along a curve.
Transfer hair guides between geometries.
Converts dense hair curves to a polygon card, keeping the style and shape of the groom.
Clumps guide curves together.
Generates hair on a surface or from points.
Generates a velocity field based on stroke primitives.
Generates an initial heightfield volume for use with terrain tools.
Blurs a terrain height field or mask.
Limits height values to a certain minimum and/or maximum.
Creates a copy of a height field or mask.
Extracts a square of a certain width/length from a larger height volume, or resizes/moves the boundaries of the height field.
Creates a cutout on a terrain based on geometry.
Displaces a height field by another field.
Advects the input volume through a noise pattern to break up hard edges and add variety.
Lets you draw shapes to create a mask for height field tools.
Calculates thermal and hydraulic erosion over time (frames) to create more realistic terrain.
Simulates the erosion from one heightfield sliding over another for a short time.
Distributes water along a heightfield. Offers controls for adjusting the intensity, variability, and location of rainfall.
Calculates the effect of thermal erosion on terrain for a short time.
Imports a 2D image map from a file or compositing node into a height field or mask.
Generates flow and flow direction layers according to the input height layer.
Copies another layer over the mask layer, and optionally flattens the height field.
Composites together two height fields.
Sets all values in a heightfield layer to a fixed value.
Sets the border voxel and compression policies on a height field volume.
Creates a mask based on different features of the height layer.
Creates a mask based some other geometry.
Creates a mask where the input terrain is hollow/depressed, for example riverbeds and valleys.
Adds vertical noise to a height field, creating peaks and valleys.
Exports height and/or mask layers to disk as an image.
Lets you paint values into a height or mask field using strokes.
Patches features from one heightfield to another.
Adds displacement in the form of a ramps, steps, stripes, Voronoi cells, or other patterns.
Projects 3D geometry into a height field.
Applies a material that lets you plug in textures for different layers.
Remaps the values in a height field or mask layer.
Changes the resolution of a height field.
Scatters points across the surface of a height field.
Simulates loose material sliding down inclines and piling at the bottom.
Creates stepped plains from slopes in the terrain.
Stitches height field tiles back together.
Splits a height field volume into rows and columns.
Height field specific scales and offsets.
Visualizes elevations using a custom ramp material, and mask layers using tint colors.
Makes holes in surfaces.
Create and evaluate Two-Bone IK solvers on a SOP skeleton.
Deforms the points in the first input to make room for the inflation tool.
Instances Geometry on Points.
Creates points with attributes at intersections between a triangle and/or curve mesh with itself, or with an optional second set of triangles and/or curves.
Composes triangle surfaces and curves together into a single connected mesh.
Processes its inputs using the operation of a referenced compiled block.
Processes its inputs using operations defined by a geometry graph.
Builds an offset surface from geometry.
Generates an isometric surface from an implicit function.
The Join op connects a sequence of faces or surfaces into a single primitive that inherits their attributes.
Capture skin geometry to a SOP skeleton for use with Joint Deform.
Supports Joint Deform by assigning capture weights to points based on distance to joints.
Perform skin deformation from KineFX skeleton animation.
Divides, deletes, or groups geometry based on an interactively drawn line.
Creates fractal geometry from the recursive application of simple rules.
The main WFC node: The solver.
Match all features between candidate image pairs using Alicevision.
Retrieves the depth value of each pixel from the cameras using Alicevision.
Configure which images to process using Alicevision.
Creates a dense geometric surface representation of the scene using Alicevision.
The complete Alicevision photogrammetry pipeline.
Detects 3D points with position and orientation and calibrate the cameras accordingly using Alicevision.
Texture the generated mesh using Alicevision.
Spread a collection of shapes along an axis or grid.
Allows you to replace attribute values with others.
Automatically Generates UV Attributes
Automatic Trim Texturing node.
Aligns Objects based on the Bounding Box
Does a boolean on a polycurve.
Clip geometry to a resizable box region.
Viewport interactive boolean for hardsurface modeling.
Convert low-resolution blockout geometry into detailed buildings using a library of user defined modules.
Create base modules to use with the building generator, as well as override base module behavior.
Export geometry attibutes to a CSV file.
Creates and simulates cables based on curve or geometry input.
Calculate the slope of a surface by comparing to a direction, and optionally blur and remap the result.
Vertex Based Thickness Calculation
Calculate UV distortion of a piece of geometry
Removes from an edge group all the edges that are not borders between different primitive islands identified by an island attribute.
Blends Color data on 2 separate meshes based on common algorithms
Documentation coming soon…
Swizzles Quaternions in order to change rotation spaces
Reorders Vector Components
Scatters curves over curves, with many intuitive controls to go from clean geometric branches to organic vines. Duplicates of this sop can be chained together for recursive growth, approximating the look of L-Systems but much more controllable.
Create a tube from a curve, with uv’s and normals.
Project a decal (localised piece of geometry and a texture) onto geometry.
Removes pieces based on connectivity and size
Remove light and shadow variation from photogrammetry textures.
Dem Bones Skinning Converter is a SOP that can convert any non-changing topology deforming mesh sequence into a bone based animation.
Prepare rigid body simulation results for export, reducing redundant geometry, cleaning normals, cleaing attributes.
The Detail Mesh SOP allows you to project a so called detail mesh onto template geometry.
Create a geometry 'skirt' where an object and ground plane intersect, to be used as a soft blend in a game engine.
Create a polygon disc with uv’s and normals
Remove edges on flat surfaces.
Calculates the distance for each point from the nearest unshared edge
Color sharp edges on geometry
Adding procedural damage on inputs
Converts an Edge Group to a Poly Curve
Converts an Edge Group to a Poly Curve
Converts edge groups to polylines.
Smooth an edge-group found in input geometry.
Allows you to export the UV wireframe for texturing
Extract curves from Meshes
Utility SOP to store the filename of a file SOP as its detail attributes to be then used in other SOPs.
Create an outline of an object projected from either an axis, or from a camera.
Import an FBX as an archive similar to how the Alembic Archive sop works.
This utility tool sets up a flowmap template on your input geometry.
The flowmap obstacle SOP allows for easy modifications on the flowmap based on geometry.
The flowmap SHOP is a glsl based viewport shader to preview flowmap shaders.
A high quality realtime preview of a flowmap texture in the Houdini viewport.
The flowmap to color SOP converts the flowmap data to vertex colors
Runs Gaea .TOR files from inside Houdini.
Full Pipeline Node to Take High Res Models to Low Res
Generate Textures based on a High Poly to Low Poly match
Creates divergence from temperature change.
A simple flamefront combustion model.
Sends Houdini Mesh data automatically to Zbrush
Contains GoZ data sent from Zbrush
Creates Groups for Inside and Outside corner points
Invert any number of specified groups
Converts Attributes to Groups
Allows for grouping geometry based on properties that can be measured
The Guide Flowmap modifies a flowmap based on a guide curve.
Simplifies the process of blending masks together in Heightfields
Allows you to insert a layer from another heightfield.
Geometric representation for Houdini icon
This OBJ sets up a camera rig to be used with the Impostor Texture ROP
The impostor tool creates texture sheets to fake 3D objects in your game engine.
Create UV’s for inside faces of voronoi fractured geometry.
This tool allows you to run geometry through InstantMeshes and generate a quad mesh.
The LOD Create SOP allows for easy LOD generation.
Create and export an LOD Hierarchy as FBX
Generate lightning effect around meshes
Finds edge loops or quad loops from manually or procedurally selected start edges.
Divide polygons into panels
Takes a mesh or volume that is animated and loops them.
Generate color, height and Open Street Map (OSM) curves using data provided by Mapbox.com.
Generates textures bakes from a high resolution to low resolution model at near interactive speeds.
Generates material_override attributes per primitive based on the assigned material.
Generates Point Colors based on the Curvature of the Model
Consolidates Small UV Islands into Larger Neighbors
Sharpens the geometry based on curvature
Clips the geometry into multiple submeshes based on a 3d grid pattern
Makes packed geometry lying on a plane tileable.
Multiple Min/Max/Average Analysis in a single node
Viewport shader for motion vector textures
Generate Several Bounding Boxes For the Input Mesh
Detects what the bone name of the highest skinning weight influence is.
Export point caches to be used with Unreal’s Niagara particle system.
Import an OBJ File including its materials and textures.
Generate Buildings from OSM Data
Isolates Specific OSM Data Layers
Imports Open Street Map Data
Physically Based Viewport Shader
Import input and output files attached to a work-item in PDG
Deform geometry along a curve.
Physics Painter is a SOP that allows users to paint physics objects onto any other object.
Allows you to interactively place individual objects in a scene.
Warps a source mesh to match the shape of a target
Slice polygons into polygons or polylines
Apply modeling changes to deforming geometry
The procedural smoke SOP will generate an animated volume to represent smoke.
Resamples a curve progressively based on an attribute
Simple Node to take a triangulated mesh and attempt to collapse the diagonal edges to return the mesh to a quad dominant state
Creates a quick basic tree
Generate polystrips on fractured geometry for extra destruction detail in game engines.
This tool allows for fast export of an RBD Sim to bone based FBX
Randomly selects a subset of input points or primitives.
This tool removes inside faces for objects that are intersecting.
Remove UV Distortion tries to reduce UV distortion by inserting new seams
Quickly Spot Heal a Mesh
Enables the use of Rizom UV within Houdini
Generate roads from curves or OSM data
Example HDA from the Rebirth Project to generate Sci Fi Panneling
SOP Based Baking of Texture Maps
Simple Interface to Change the Timing of an animation
Generate a rubber band like rope around an object based on inputs.
Deforms a mesh based on a sine wave curve
Uploads geometry to Sketchfab
Skinning Converter is a SOP that can convert any non-changing topology deforming mesh sequence into a bone based animation.
Adds geometry to an input mesh that mimics snow buildup
Soften Normals is a convenience SOP that is frequently used to prepare geometry for baking.
The sphere generator creates a sphere from a cube with uv’s and normals.
Creates a spiral curve
Creates a POP Fluid simulation setup for splattering.
Split primitives into separate outputs based on normals
Create a simple star primitive.
The Static Fracture SOP takes static geometry data from sop level, and separates them into newly generated geometry containers on object level
Generate the central curve (straight skeleton) for 2D input shapes.
Generates a curve based on the internal structure of a mesh
Orients a mesh based on UP and FRONT groups
Loads a Substance Archive and assigns it as a material
This tool creates 2D shapes using the superformula equation.
Sweeps geometry along a curve.
Clips and mirrors geometry along an axis.
The terrain layer export SOP exports a heightfield with the correct settings for Unreal.
The terrain layer import SOP exports a heightfield with the correct settings from Unreal.
The Terrain Mesh Output allows you to convert the plugged in heightfield into (tiled) geometry.
The Terrain Texture Output renders image data from a heightfield.
A scan of Luiz Kruel
A scan of Paul Ambrosiussen
Calculates and corrects texel density of an asset.
Extrudes a mesh along it’s averaged normals
Generates Curves from Photoshop File Layers
Generates tree branches
Manually place tree branches
Controls other tree nodes
This tool extracts geometry and pivot points from trees created with Labs Tree Generator tools for use with Labs Unreal PivotPainter.
Generates leaves on branches
Simple leaf generator for visualization purposes
Generates a tree trunk
Interactive version of the Trim Texture node.
Helps preparing trim texture geometry for a Trim Texture workflow
Displacing geometry based on a triplanar projection
Rotates the input geometry around itself based on the timeline
Creates a UDIM tile number attribute on primitives, points, or vertices.
Marks and optionally repairs UV overlaps.
Transfer uv’s between a source and target geometry.
Converts every primitive to 0-1 UVs
Different methods of visualizing UV Data
Exports hair to Unreal Engine.
Pivot Painter stores model pivot and rotation information for geometry used in a shader.
Prepare heightfield and actor instances for use with World Composition in Unreal
Converts the input volume/VDB field to a VDB vector field and updates how the vector field will respond to transformations downstream.
Export a vector field, compatible with Unreal Engine.
Adjusts volume visualization mode (default / normals / motion vectors), density, colors (including greyscale colors), emission, and viewport rendering quality.
Take a volume as an input and export a texture of the density field.
Take a volume as an input and export a texture of the density field.
A utility tool to initialize a WFC grid to be used with the WFC Solver
A utility tool to paint attribute values on a grid used by the WFC Solver
A decoder that decodes color information into Wang Tilesets.
Sample tiles that can be used as Wang Tilesets.
Export a pointcloud to XYZ file.
Deforms geometry based on how you reshape control geometry.
Create a point cloud, connected polyline mesh, or tet mesh around the active region of volumes. This node creates a deformation lattice for use with the Volume Deform node.
Reads a lidar file and imports a point cloud from its data.
Creates polygon or NURBS lines from a position, direction, and distance.
Animates points using an MDD file.
Deforms geometry by using another piece of geometry to attract or repel points.
Stores a reference on a point to a point in another geometry.
Creates a point attribute mask based on visibility/lighting, letting you limit the effect of other nodes to areas that are visible, or facing a certain direction, or in shadow.
Aligns the input geometry to a specific axis.
Resizes and recenters the geometry according to reference.
Reorders the primitive and point numbers of the input geometry to match some reference geometry.
Assigns one or more materials to geometry.
Measures area, volume, or curvature of individual elements or larger pieces of a geometry and puts the results in attributes.
Merges geometry from its inputs.
Merges and names geometry from its inputs.
Defines groupings of metaballs so that separate groupings are treated as separate surfaces when merged.
Creates metaballs and meta-superquadric surfaces.
Duplicates and mirrors geometry across a mirror plane.
Parses and imports motion capture data as geometry.
This SOP outputs live motion capture data from various devices
Converts a skeleton animation to a MotionClip
Blends the animation of one MotionClip on top of another
Smoothly loops a section of a MotionClip
Evaluates a single frame of a MotionClip
Extracts the motion of joints over a set of frames from a MotionClip
Identifies the key poses of an animation
Extracts the locomotion from a MotionClip and manages its representation.
Removes the specified samples from the MotionClip
Adds a new sample to a MotionClip containing the given pose
Adjusts the timing of a MotionClip
Concatenates two MotionClips
Update a MotionClip using the given point list
Creates and modifies the muscle Vellum constraints for the input solid muscle geometry in preparation for the muscle solver.
Activates and animates the contraction and relaxation of input solid muscle geometry.
Creates and assigns Muscle IDs to each connected cluster of primitives on the input geometry.
Duplicates muscle geometry with symmetry. Muscle attributes are also copied/renamed with symmetry.
A stroke-based paint tool for modifying muscle attributes.
Transitions input bone, muscle, tissue, or skin geometry from their static t-poses into the start frame of their animated sequence.
Creates and modifies the physical properties for the input solid muscle geometry in preparation for the muscle solver.
Converts input surface geometry to a tetrahedral mesh for use as muscles.
Computes the dynamics simulation for the muscle pass using Vellum.
Creates and attaches line segments to input bone surface geometry that then drive muscle flexion.
Creates a naming attribute on points or primitives allowing you to refer to them easily, similar to groups.
Computes surface normal attribute.
Merges geometry from multiple sources and allows you to define the manner in which they are grouped together and transformed.
Deforms input geometry based on ocean spectrum volumes.
Generates particle-based foam
Generates particles and volumes from ocean spectrum volumes for use in simulations
Generates volumes containing information for simulating ocean waves.
Instances individual waveforms onto input points and generated points.
Executes an OpenCL kernel on geometry.
Orient Joints on a target skeleton.
Computes orientations (frames) along curves.
Marks the output of a sub-network.
Packs geometry into an embedded primitive.
Replaces the contents of Packed Primitives in-place.
Packs points into a tiled grid of packed primitives.
Editing Packed Disk Primitives.
Editing Packed Primitives.
Creates a color volume based on drawn curve
Creates a fog volume based on drawn curve
Creates an SDF volume based on drawn curve
Parent Joints on a target skeleton.
Generates a surface around the particles from a particle fluid simulation.
Creates a set of regular points filling a tank.
Generates trails from the incoming particles that can be used to render sparks, fireworks, and rain.
Places points and primitives into groups based on a user-supplied rule.
Deforms geometry using the shape of a curve.
Moves primitives, points, edges or breakpoints along their normals.
Creates a planar polygonal patch.
Fills in a 2d curve network with triangles.
Deforms flat geometry into a pleat.
Creates platonic solids of different types.
Constructs an iso surface from its input points.
Deforms geometry according to an arbitrary connected point mesh.
Creates new points, optionally based on point positions in the input geometry.
Jitters points in random directions.
Moves points with overlapping radii away from each other, optionally on a surface.
Generates a cloud of points around the input points.
Splits points shared by multiple vertices, optionally only if the vertices differ in attribute values.
Computes and manipulates velocities for points of a geometry.
Merges points interactively.
Creates set of regular points filling a volume.
Creates flat or tube-shaped polygon surfaces between source and destination edge loops, with controls for the shape of the bridge.
Creates offset polygonal geometry for planar polygonal graphs.
Extrudes polygonal faces and edges.
Creates straight, rounded, or custom fillets along edges and corners.
Breaks curves where an attribute crosses a threshold.
Helps repair invalid polygonal geometry, such as for cloth simulation.
Fills holes with polygonal patches.
Creates coordinate frame attributes for points and vertices.
Creates new polygons using existing points.
Creates a smooth polygonal patch from primitives.
Cleans up topology of polygon curves.
Reduces the number of polygons in a model while retaining its shape. This node preserves features, attributes, textures, and quads during reduction.
Combines polygons into a single primitive that can be more efficient for many polygons
The PolySpline SOP fits a spline curve to a polygon or hull and outputs a polygonal approximation of that spline.
Divides an existing polygon into multiple new polygons.
Constructs polygonal tubes around polylines, creating renderable geometry with smooth bends and intersections.
Compute the difference between point transforms on two SOP skeletons.
Assigns channel paths and/or pickscripts to geometry.
Interpolates between a set of pose-shapes based on the value of a set of drivers.
Combine result of Pose-Space Deform with rest geometry.
Packs geometry edits for pose-space deformation.
Creates common attributes used by the Pose-Space Edit SOP.
Edits primitive, primitive attributes, and profile curves.
Helps develop the volume look both for viewport display and rendering after the pyro solve.
Creates points suitable for sourcing into pyro simulations to create explosions, muzzle flashes, shockwaves, and detonation rings.
Applies common post-processing effects to the results of Pyro solves.
Generates a cloud of points around the input points suitable for pyro trails and particle simulations.
Runs a dynamic Pyro simulation.
Creates points for sourcing pyro and smoke simulations.
Pyro Source Spread solves for the spreading of flame across a point cloud.
Generates curves to use as trails for the Pyro Trail Source node.
Creates points suitable for sourcing into pyro simulations to create trails for explosions.
Runs a Python snippet to modify the incoming geometry.
Runs a dynamic Bullet simulation.
Combines fractured pieces or constraints into larger clusters.
Packs and creates attributes describing rigid body objects.
Stores the primitive number and distance to the opposite face on the inside faces of fractured geometry.
Creates attributes describing rigid body constraints.
Creates rigid body constraint geometry from curves drawn in the viewport.
Creates rigid body constraint geometry from interactively drawn lines in the viewport.
Creates rigid body constraint geometry from a set of rules and conditions.
Converts existing constraint prims into constraints with different anchor positions.
Deforms geometry with simulated proxy geometry.
Converts deforming geometry to animated static packed objects.
Detects when connected faces have become separated.
Visualize RBD fractured geometry merged with the proxy geometry, pushed out from the center to create an exploded view.
Sets attributes on packed fragments for the RBD Guide DOP.
Packs RBD fractured geometry, saves them to disk, and loads them back again.
Creates additional detail on the interior surfaces of fractured geometry.
Fractures the input geometry based on a material type.
Packs RBD geometry, constraints, and proxy geometry into a single geometry.
Paints values onto geometry or constraints using strokes.
Unpacks an RBD setup into three outputs.
Attaches RenderMan shaders to groups of faces.
Export animation from geometry-based skeleton to an FBX file.
Export a skinned character with geometry-based skeleton to an FBX file.
Export a skinned character with a geometry-based skeleton to a glTF or glb (binary) file.
Creates collision shapes for a KineFX skeleton to be used in a ragdoll RBD simulation.
Builds a constraint network to hold a KineFX skeleton together during a ragdoll RBD simulation.
Runs a ragdoll RBD simulation on the target skeleton.
Generates surfaces by stretching cross-sections between two guide rails.
Projects one surface onto another.
Increases the number of points/CVs in a curve or surface without changing its shape.
Scatters new guides, interpolating the properties of existing guides.
Recreates the shape of the input surface using high-quality (nearly equilateral) triangles.
Rebuilds polygonal topology to straighten edges, close small holes, and remove interior geometry.
Repacks geometry as an embedded primitive.
Resamples one or more curves or surfaces into even length segments.
Creates rest attributes on the geometry so procedural textures stay put on the surface as it deforms.
Retimes the time-dependent input geometry.
Reverses or cycles the vertex order of faces.
Creates a reverse foot set up for the given input skeleton.
Revolves a curve around a center axis to sweep out a surface.
Rewires vertices to different points specified by an attribute.
Runs a VOP network to modify geometry attributes on a KineFX rig.
Runs a VEX snippet to modify transform attribute values on a KineFX rig.
Attach the joints of a skeleton SOP to another, posed skeleton.
Optimize and run checks on a SOP skeleton
Conform the rest poses of two skeletons in preparation for retargeting.
Mirror a SOP skeleton’s pose.
Pose and animate a SOP rig or skeleton.
Runs a Python snippet to modify the incoming rig geometry.
Store a static pose on a skeleton as a matrix point attribute.
Generates ripples by displacing points along the up direction specified.
Generates ripples by displacing points along the up direction specified.
Scatters new points randomly across a surface or through a volume.
Scatters points across a surface with randomized scale and orientation attributes for use with Copy to Points.
Export animation from a geometry-based character to the Scene (OBJ) context.
Creates a geometry-based character with animation from the Scene (OBJ) context.
Runs scripts when cooked.
Lets you interactively reshape a surface by brushing.
Adds secondary motion effects to a static or animated input KineFX joint, skeleton, or character.
Morphs though a sequence of 3D shapes, interpolating geometry and attributes.
Stores the rest position for the input bone, muscle, or tissue geometry.
Computes the post-deform or pre-deform difference of two geometries with similar topologies.
Computes the convex hull of the input geometry and moves its polygons inwards along their normals.
Interactively create and edit geometry-based skeletons.
Blends two skeletons
Modify an input skeleton by duplicating joints across a mirror plane.
Builds a skin surface between any number of shape curves.
Creates and modifies skin attributes in preparation for the skin solver.
Converts surface geometry to a solid (tetrahedrons). The output geometry is prepared for solving with a tissue solver.
Computes the dynamics simulation for the skin pass using Vellum.
Creates a sky filled with volumentric clouds
Smooths out (or relaxes) polygons, meshes and curves without increasing the number of points.
Moves the selected point along its normal, with smooth rolloff to surrounding points.
Moves the selected point, with smooth rolloff to surrounding points.
Creates a partition of a tetrahedral mesh that can be used for finite-element fracturing.
Allows running a SOP network iteratively over some input geometry, with the output of the network from the previous frame serving as the input for the network at the current frame.
Reorders points and primitives in different ways, including randomly.
Creates a sphere or ovoid surface.
Aligns a group of primitives to each other or to an auxiliary input.
Provides operations for moving knots within the parametric space of a NURBS curve or surface.
Closes open areas with flat or rounded coverings.
Lets you deform NURBS faces and NURBS surfaces by pulling points that lie directly on them.
Deforms and animates a piece of geometry across a surface.
Deforms a spline surface by reshaping a curve on the surface.
Creates smooth bridging geometry between two curves or surfaces.
Fits a spline curve to points, or a spline surface to a mesh of points.
Extracts or manipulates profile curves.
Creates profile curves on surfaces.
Trims or creates profile curves along the intersection lines between NURBS or bezier surfaces.
Trims away parts of a spline surface defined by a profile curve or untrims previous trims.
Splits primitives or points into two streams.
Spray paints random points onto a surface.
A SOP node that sets the sprite display for points.
Removes jitter from the input animation and handles terrain snapping of joints.
Insets points on polygonal faces.
Caches the input geometry in the node on command, and then uses it as the node’s output.
Stretches two curves or surfaces to cover a smooth area.
Low level tool for building interactive assets.
Subdivides polygons into smoother, higher-resolution polygons.
The Subnet op is essentially a way of creating a macro to represent a collection of ops as a single op in the Network Editor.
Generates an isoquadric surface.
Creates a surface by sweeping a cross section curve along a spine curve.
Switches between network branches based on an expression or keyframe animation.
Switches between two network branches based on an expression or geometry test.
Sends input geometry to a TOP subnet and retrieves the output geometry.
Reads a CSV file creating point per row.
Creates a rock creature, which can be used as test geometry.
Creates a pig head, which can be used as test geometry..
Creates a rubber toy, which can be used as test geometry.
Creates a shader ball, which can be used to test shaders.
Creates a squab, which can be used as test geometry.
Creates a template body, which can be used as test geometry.
Creates a template head, which can be used as test geometry.
Creates a soldier, which can be used as test geometry.
Provides a simple crowd simulation for testing transitions between animation clips.
Provides a simple Bullet simulation for testing the behavior of a ragdoll.
Creates a tetrahedral mesh that conforms to a connected mesh as much as possible.
Creates a simple tetrahedral mesh that covers a connected mesh.
Partitions a given tetrahedron mesh into groups of tets isolated by a given polygon mesh
Cooks the input at a different time.
Creates and modifies tissue attributes in preparation for the tissue solver.
Converts surface geometry to a solid (tetrahedrons). The output geometry is prepared for solving with a tissue solver.
Computes the dynamics simulation for the tissue pass using Vellum.
Sets attributes used by the Toon Color Shader and Toon Outline Shader.
Non-rigidly deforms a surface to match the size and shape of a different surface.
Lets you interactively draw a reduced quad mesh automatically snapped to existing geometry.
Creates a torus (doughnut) shaped surface.
Traces curves from an image file or heightfield.
Creates trails behind points.
The Transform operation transforms the source geometry in object space using a transformation matrix.
Transforms the input geometry relative to a specific axis.
Transforms the input geometry by a point attribute.
Transforms input geometry according to transformation attributes on template geometry.
Creates a triangular Bezier surface.
Refines triangular meshes using various metrics.
Connects points to form well-shaped triangles.
Creates open or closed tubes, cones, or pyramids.
Imports a skeleton and animation from a UsdSkel character.
Imports the rest geometry, skeleton, and animation from a UsdSkel character.
Imports skinned geometry from a UsdSkel character.
Generates an edge group representing suggested seams for flattening a polygon model in UV space.
Adjusts texture coordinates in the UV viewport by painting.
Lets you interactively move UVs in the texture view.
Creates flattened pieces in texture space from 3D geometry.
Packs UV islands efficiently into a limited area.
Relaxes UVs by pulling them out toward the edges of the texture area.
Assigns UVs by projecting them onto the surface from a set direction.
Applies an image file as a textured shader to a surface.
Assigns texture UV coordinates to geometry for use in texture and bump mapping.
Transforms UV texture coordinates on the source geometry.
Separates UVs into reasonably flat, non-overlapping groups.
Processes geometry using an external program.
Unpacks packed primitives.
Unpacks points from packed primitives.
Converts packed USD primitives into normal Houdini geometry.
Creates one or more empty/uniform VDB volume primitives.
Activates voxel regions of a VDB for further processing.
Expand or contract signed distance fields stored on VDB volume primitives.
Moves VDBs in the input geometry along a VDB velocity field.
Moves points in the input geometry along a VDB velocity field.
Computes an analytic property of a VDB volumes, such as gradient or curvature.
Clips VDB volume primitives using a bounding box or another VDB as a mask.
Combines the values of two VDB volumes in various ways.
Tests VDBs for Bad Values and Repairs.
Extrapolate a VDB signed distance field.
Cuts level set VDB volume primitives into multiple pieces.
Build an LOD Pyramid from a VDB.
Combines many VDB volumes in various ways.
Blends between source and target SDF VDBs.
Create a mask of the voxels in shadow from a camera for VDB primitives.
Deletes points inside of VDB Points primitives.
Manipulates the Internal Groups of a VDB Points Primitive.
Computes the steady-state air flow around VDB obstacles.
Removes divergence from a Vector VDB.
Fixes signed distance fields stored in VDB volume primitives.
Re-samples a VDB volume primitive into a new orientation and/or voxel size.
Reshapes signed distance fields in VDB volume primitives.
Splits SDF VDBs into connected components.
Smooths out the values in a VDB volume primitive.
Smooths out SDF values in a VDB volume primitive.
Creates an SDF VDB based on the active set of another VDB.
Splits a vector VDB primitive into three scalar VDB primitives.
Merges three scalar VDB into one vector VDB.
Replaces a VDB volume with geometry that visualizes its structure.
Generates a signed distance field (SDF) VDB volume representing the surface of a set of particles from a particle fluid simulation.
Converts point clouds and/or point attributes into VDB volume primitives.
Converts polygonal surfaces and/or surface attributes into VDB volume primitives.
Fills a VDB volume with adaptively-sized spheres.
Interactive brushing of Vellum geometry, grains, and fluids in the viewport.
Configures geometry for Vellum Grain constraints.
Modifies common Vellum Constraint properties.
Configure constraints on geometry for the Vellum solvers.
Vellum solver setup to pre-roll fabric to drape over characters.
Packs Vellum simulations, saves them to disk, and loads them back again.
Packs Vellum geometry and constraints into a single geometry.
Applies common post-processing effects to the result of Vellum solves.
Ties Vellum points to a reference frame defined by moving geometry.
Blends the current rest values of constraints with a rest state calculated from external geometry.
Runs a dynamic Vellum simulation.
Unpacks a Vellum simulation into two outputs.
Verify that a bsdf conforms to the required interface.
Manually adds or edits attributes on vertices (rather than on points).
Shows/hides primitives in the 3D viewer and UV editor.
Lets you adjust display options and attach visualizers to geometry.
Visualize the transformations and parenting of a SOP skeleton
Creates a volume primitive.
Modifies values on the incoming Volume and VDB primitives.
Computes analytic properties of volumes.
Computes a speed-defined travel time from source points to voxels.
Blurs the voxels of a volume.
Bounds voxel data.
Cuts polygonal objects using a signed distance field volume.
Combines multiple volumes or VDBs within one geometry into a new volume or VDB.
Re-compresses Volume Primitives.
Convolves a volume by a 3×3×3 kernel.
Deform a volume using lattice points.
Compute the Fast Fourier Transform of volumes.
Feathers the edges of volumes.
Flattens many volumes into one volume.
Combines the scalar fields of volume primitives.
Adds or generates noise in volume/VDB primitives.
Adds or generates noise and displaces an SDF.
Adds or generates noise in a Vector volume/VDB.
Ensure a set of volumes add up to one.
Translates the motion between two image volumes into displacement vectors.
Fill in a region of a volume with features from another volume.
Remaps a volume according to a ramp.
Rasterizes into a volume.
Samples point attributes into VDBs.
Converts a curve into a volume.
Converts fur or hair to a volume for rendering.
Deform a volume using lattice points.
Converts a point cloud into a volume.
Converts a point cloud into a volume.
Reduces the values of a volume into a single number.
Resamples the voxels of a volume to a new resolution.
Resizes the bounds of a volume without changing voxels.
Builds a Signed Distance Field from an isocontour of a volume.
Extracts 2d slices from volumes.
Splices overlapping volume primitives together.
Stamps volumes instanced on points into a single target volume.
Adaptively surfaces a volume hierarchy with a regular triangle mesh.
Computes a trail of points through a velocity volume.
Runs CVEX on a set of volume primitives.
Computes a velocity volume.
Generates a volume velocity field using curve tangents.
Generates a velocity field within a surface geometry.
Adjusts attributes for multi-volume visualization.
Runs a VEX snippet to modify voxel values in a volume.
Sets the voxels of a volume from point attributes.
Create a line segment between points with adjacent Voronoi cells
Fractures the input geometry by performing a Voronoi decomposition of space around the input cell points
Given an object and points of impact on the object, this SOP generates a set of points that can be used as input to the Voronoi Fracture SOP to simulate fracturing the object from those impacts.
Cuts the geometry into small pieces according to a set of cuts defined by polylines.
Creates the point attributes needed to create a Vortex Force DOP.
Generates volumes to be used as sources in a whitewater simulation.
Computes generalized winding number of surface at query points.
Morphs between curve shapes while maintaining curve length.
Captures surfaces to a wire, allowing you to edit the wire to deform the surface.
Deforms geometry captured to a curve via the Wire Capture node.
Transfers the shape of one curve to another.
Constructs polygonal tubes around polylines, creating renderable geometry.