CurvesInterpolation

Defines how CurvesPrimitive geometry is interpolated, by modifying basis and wrap.

user

Container for user-defined plugs. Nodes should never make their own plugs here, so users are free to do as they wish.

out

The processed output scene.

enabled

The on/off state of the node. When it is off, the node outputs the input scene unchanged.

in

The input scene

filter

The filter used to control which parts of the scene are processed. A Filter node should be connected here.

basis

The method used to interpolate the vertices of the curves.

  • Linear : Straight lines between vertices.

  • BSpline : Smooth interpolation approximating - but not passing directly through - each vertex. Requires Pinned wrap mode to interpolate all the way to the end vertices.

  • CatmullRom : Smooth interpolation passing directly through each vertex. Requires Pinned wrap mode to interpolate all the way to the end vertices.

wrap

The treatment of the first and last curve segments.

  • Pinned : Automatically uses “phantom points” to ensure that CatmullRom and BSpline curves interpolate all the way to their endpoints. Equivalent to NonPeriodic for all other curve types.

  • Periodic : Wraps the curve around to form a closed loop.

  • NonPeriodic : Neither wraps the curve to produce a loop or introduces phantom endpoints. Generally inferior to the other options.

expandPinned

When converting Pinned curves to NonPeriodic, adds the “phantom” vertices so that the curves continue to interpolate to their original endpoints.