Houdini Engine 5.0
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Animation Curves

Animation curves can put onto any parameter of any exposed node. It is done with the following two functions:

The HAPI_SetTransformAnimCurve() is simply a convenience function - it puts the curves on the transform parameter, without you having to search for the specific HAPI_ParmId of the exposed transform parameters. In both cases an array of HAPI_Keyframe structures are expected as input.