Houdini 21.0 Nodes Geometry nodes

Topo Slide by Curve References geometry node

Slides geometry across a surface using pairs of reference curves.

Since 21.0

This SOP operator slides geometry from one region of a surface to another guided by curve-based landmark pairs. It supports a high-accuracy sliding method that uses Topo Transfer which is a faster approximate mode. Use this node to realign mesh features across a model.

Parameters

Solve

Solve Mode

Chooses the algorithm to slide the geometry across the surface.

Topo Transfer (accurate)

Slides geometry using Topo Transfer.

Slide (fast)

Uses a simplified sliding method. Faster but less precise, suited for quick feedback or rough alignment.

Blur Iterations

Number of iterations to smooth the resulting slide deformation.

Blur Step Size

Controls how far each blur iteration pushes the deformation. Higher values produce stronger smoothing.

Landmarks

Match up Curve Pairs

Attempts to automatically pair source and target curves based on proximity. This helps establish consistent slide landmarks even when reference and target curve are in differing order.

Edit Landmarks

Edit Source Curves

Enters an editing mode for the source curves. Use this to manually define or adjust the sliding start regions.

Edit Target Curves

Enters an editing mode for the target curves. Use this to set where geometry should slide toward.

Set Display & Template Flags when Clicking Edit Buttons

Automatically sets display and template flags to make source or target curves visible when editing. Helps streamline viewport workflow.

Mask

Blend

Global blend between the original and slid geometry. 0 means no slide, 1 means full slide.

Use Mask Attribute

Turns on localized sliding control via a float attribute.

Mask Attribute

Name of the attribute that controls how much each point is affected by the slide. Values typically range from 0 to 1.

Mask by Radius

Limits the slide effect based on proximity to source curves.

Effect Radius

Maximum distance from source curves within the points that are affected by the slide.

Use Radius Attribute

Allows per-point control over slide influence radius.

Radius Attribute

Name of the attribute that defines a custom radius of effect for each point.

Visualization

Enable Visualization Modes

Toggles visual aids in the viewport to help debug curve matching and the slide effect.

Visualization Mode

Specifies which set of curves to visualize.

Source

Displays the source landmark curves.

Target

Displays the target landmark curves.

Show Arrows

Displays directional arrows showing how each source curve corresponds to its target. Useful for understanding sliding direction.

See also

Geometry nodes