/*  Copyright (C) 1996-1997  Id Software, Inc.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

    See file, 'COPYING', for details.
*/

typedef struct {
	int numpoints;
	vec3_t p[ 4 ]; // variable sized
} winding_t;

#define MAX_POINTS_ON_WINDING   64

#define ON_EPSILON      0.1

winding_t *AllocWinding( int points );
vec_t WindingArea( winding_t *w );
void WindingCenter( winding_t *w, vec3_t center );
void ClipWinding( winding_t *in, vec3_t normal, vec_t dist,
		  winding_t **front, winding_t **back );
winding_t *ChopWinding( winding_t *in, vec3_t normal, vec_t dist );
winding_t *CopyWinding( winding_t *w );
winding_t *BaseWindingForPlane( vec3_t normal, float dist );
void CheckWinding( winding_t *w );
void WindingPlane( winding_t *w, vec3_t normal, vec_t *dist );
void RemoveColinearPoints( winding_t *w );
