Houdini 13.0 Nodes

interface version 1

Builds a motion path curve of an object (and computes motion-related attributes).

Credits

This operator is inspired by the Motion Trail OBJ node created by Edward Lam, Jason Iversen and Graham Thompson. The qLib version is recreated as a SOP node and added more options regarding the output geometry. You can find the original version at its Houdini Exchange Link.

Parameters

Target

The object which creates the trail.

Frame Range

Start/End/Step of the frame range that limits the trail creation in time.

Geometry Type

Geometry type of the curve that gets created.

Order

The order of the curve for NURBS and Bezier types.

Velocity Attribute

If enabled, per-point velocity attributes are computed and stored.

Acceleration Attribute

If enabled, per-point acceleration attributes are computed and stored.

To Do

  • Compute angular velocity/acceleration

Release Notes

interface version 1 —

2014-07-15

  • Bug fix: geometry was incorrect if start frame was different from 1. Fixed.

  • Added multipliers for velocity and acceleration attributes.

  • Added frame attribute option.

2014-06-22

  • Bug fix: frame step now works

previous versions —

Version 0.1.1
Bug fixes

  • The correct number of path points are created if frame step is greater than 1.

  • The appropriate velocity values are returned, regardless of the frame step setting.

Version 0.1.0

Initial release.