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/*
===========================================================================
Return to Castle Wolfenstein multiplayer GPL Source Code
Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company.
This file is part of the Return to Castle Wolfenstein multiplayer GPL Source Code (RTCW MP Source Code).
RTCW MP Source Code 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 3 of the License, or
(at your option) any later version.
RTCW MP Source Code 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 RTCW MP Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the RTCW MP Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the RTCW MP Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
// this is only used for visualization tools in cm_ debug functions
typedef struct
{
int numpoints;
vec3_t p[4]; // variable sized
} winding_t;
#define MAX_POINTS_ON_WINDING 64
#define SIDE_FRONT 0
#define SIDE_BACK 1
#define SIDE_ON 2
#define SIDE_CROSS 3
#define CLIP_EPSILON 0.1f
// you can define on_epsilon in the makefile as tighter
#ifndef ON_EPSILON
#define ON_EPSILON 0.1f
#endif
winding_t *AllocWinding( int points );
vec_t WindingArea( winding_t *w );
void WindingCenter( winding_t *w, vec3_t center );
void ClipWindingEpsilon( winding_t *in, vec3_t normal, vec_t dist,
vec_t epsilon, 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 *ReverseWinding( winding_t *w );
winding_t *BaseWindingForPlane( vec3_t normal, vec_t dist );
void CheckWinding( winding_t *w );
void WindingPlane( winding_t *w, vec3_t normal, vec_t *dist );
void RemoveColinearPoints( winding_t *w );
int WindingOnPlaneSide( winding_t *w, vec3_t normal, vec_t dist );
void FreeWinding( winding_t *w );
void WindingBounds( winding_t *w, vec3_t mins, vec3_t maxs );
void AddWindingToConvexHull( winding_t *w, winding_t **hull, vec3_t normal );
void ChopWindingInPlace( winding_t **w, vec3_t normal, vec_t dist, vec_t epsilon );
// frees the original if clipped
void pw( winding_t *w );
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