Houdini 19.0 Nodes Geometry nodes PolySpline

PolySpline geometry node

The PolySpline SOP fits a spline curve to a polygon or hull and outputs a polygonal approximation of that spline.

The PolySpline SOP fits a spline curve to a polygon or hull and outputs a polygonal approximation of that spline. You can choose either to create divisions between the original points, or to ignore the position of the original points and divide the shape into segments of equal lengths.

PolySpline can optionally resample the output curve, providing control over the length and number of its segments.

Tip

When using this op, it is useful to enable Points display in the Viewport options dialog. This way you can see exactly what effect the op is having.

Parameters

Group

Subset of faces to use

Spline Type

Spline type: Bezier, Special Bezier, Special Smooth Bezier, Degree 2 Bezier, BSpline, Cardinal, or Linear

Close

Off

Output spline open

On

Output spline closed

If polygon does

Use the closure of the input face

Division Method

Standard

Do not resample curve

Even Length Segments

Resample - ensure equal segment lengths

Even X Segments

Resample - ensure segments have equal length in x

Even Y Segments

Resample - ensure segments have equal length in y

Even Z Segments

Resample - ensure segments have equal length in z

Segment Length

The length of the segments in the resampled curve. If set to zero, segment length is calculated using the Output Divisions parameter.

Output Divisions

Number of segments in the resampled curve. If set to zero, the number of output divisions is calculated using the Segment Length parameter.

Sample Divisions

Number of spline divisions before resampling

First CV Count

Number of times to repeat the first control vertex, determining its multiplicity

Last CV Count

Number of times to repeat the last control vertex, determining its multiplicity

CV Tension

Spline tension

See also

PolySpline