#define PARAM_SIMPLE 0 #define PARAM_NORMALIZED 1 is taken by ShapeObject::InterpCurve3D ( TimeValue t, int curve, float param, int ptype = PARAM_SIMPLE ) and ShapeObject::TangentCurve3D ( TimeValue t, int curve, float param, int ptype = PARAM_SIMPLE ) Would be nice to have them as an anim and not an int.