/*
 * rotspline.h
 *
 * Copyright (C) 1989, 1991, Craig E. Kolb
 * All rights reserved.
 *
 * This software may be freely copied, modified, and redistributed
 * provided that this copyright notice is preserved on all copies.
 *
 * You may not distribute this software, in whole or in part, as part of
 * any commercial product without the express consent of the authors.
 *
 * There is no warranty or other guarantee of fitness of this software
 * for any purpose.  It is provided solely "as is".
 *
 * $Id$
 *
 * $Log$
 */
#ifndef ROTSPLINE_H
#define ROTSPLINE_H

#define GeomRotsplineCreate(a,r1,d1,b,r2,d2,c) GeomCreate((GeomRef)RotsplineCreate(a,r1,d1,b,r2,d2,c), \
					RotsplineMethods())

#define EvalSpline(c, x) (c[3]*x*x*x + c[2]*x*x + c[1]*x + c[0])

/*
 * Rotspline
 */
typedef struct rotspline {
	Float *k;
	Float w;
	Trans trans;
} Rotspline;

extern Rotspline	*RotsplineCreate();
extern int	RotsplineIntersect(), RotsplineEnter(), RotsplineNormal();
extern void	RotsplineBounds(), RotsplineStats(), RotsplineUV();
extern char	*RotsplineName();
extern Methods	*RotsplineMethods();

#endif /* ROTSPLINE_H */