Houdini 21.0 Nodes Geometry nodes

Guide Volume geometry node

Generates volumetric representations from guide curves.

Since 21.0

This SOP constructs volumes from guide curves, producing outputs such as cross sections, shell surfaces, remeshed surfaces, or tetrahedral volumes. It resamples guide curves and cross sections to control detail and smoothness.

Parameters

Group

Specifies the subset of guide geometry to process.

Output

Selects the type of volumetric output:

Cross Sections

Generates polygonal cross sections along guide curves.

Shell Surface

Creates a shell surface of the guide volume.

Remeshed Surfaces

Produces a remeshed surface with triangulated topology.

Tetrahedra

Generates a tetrahedral volume suitable for physical simulations.

Resample Curves

Enables resampling of guide curves to enforce uniform segment lengths.

Curve Segment Length

Desired length of segments when resampling guide curves.

Resample Cross Sections

Enables resampling of cross sections to control their resolution.

Cross Section Segment Length

Desired length of segments when resampling cross sections.

Minimum Radius

Sets a minimum radius for generated volumes to prevent collapse in thin regions.

Cross Section Processing

Iterations

Number of iterations for cross section smoothing and flattening.

Flatten Cross Sections

Enables flattening of cross sections to reduce irregularities.

Smooth Cross Sections

Enables smoothing of cross section contours.

Strength

Controls the intensity of cross section smoothing.

Remeshing & Tetrahedra

Target Size

Desired element size for remeshing or tetrahedralization.

Tetrahedralize Each Clump Separately

When enabled, tetrahedralizes each connected component (clump) independently.

Boolean Union before Remesh

Performs a boolean union on all inputs. This can improve tetrahedralization results.

Pre-Process as VDB

Converts geometry to VDB format for gap closing and smoothing before remeshing.

Relative Voxel Size

Voxel size relative to the bounding box used in VDB processing.

Close Gaps

Enables closing of small gaps in the geometry during VDB preprocessing.

Close Gaps Amount

Distance metric for closing gaps during VDB processing.

Attributes

Output Curve U Attribute

Output an attribute storing a normalized curve parameterization.

Curve U Attribute

Name of the attribute storing normalized curve parameterization on the output geometry.

See also

Geometry nodes