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- /***** BallMath.h - Essential routines for Arcball. *****/
- #ifndef _H_BallMath
- #define _H_BallMath
- #include "BallAux.h"
- HVect MouseOnSphere(HVect mouse, HVect ballCenter, double ballRadius);
- HVect ConstrainToAxis(HVect loose, HVect axis);
- int NearestConstraintAxis(HVect loose, HVect * axes, int nAxes);
- Quat Qt_FromBallPoints(HVect from, HVect to);
- void Qt_ToBallPoints(Quat q, HVect * arcFrom, HVect * arcTo);
- #endif
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