2 Copyright (C) 1999-2006 Id Software, Inc. and contributors.
3 For a list of contributors, see the accompanying CONTRIBUTORS file.
5 This file is part of GtkRadiant.
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 vec3_t p[4]; // variable sized
28 #define MAX_POINTS_ON_WINDING 64
30 // you can define on_epsilon in the makefile as tighter
32 #define ON_EPSILON 0.1
35 winding_t *AllocWinding (int points);
36 vec_t WindingArea (winding_t *w);
37 void WindingCenter (winding_t *w, vec3_t center);
38 void ClipWindingEpsilon (winding_t *in, vec3_t normal, vec_t dist,
39 vec_t epsilon, winding_t **front, winding_t **back);
40 winding_t *ChopWinding (winding_t *in, vec3_t normal, vec_t dist);
41 winding_t *CopyWinding (winding_t *w);
42 winding_t *ReverseWinding (winding_t *w);
43 winding_t *BaseWindingForPlane (vec3_t normal, vec_t dist);
44 void CheckWinding (winding_t *w);
45 void WindingPlane (winding_t *w, vec3_t normal, vec_t *dist);
46 void RemoveColinearPoints (winding_t *w);
47 int WindingOnPlaneSide (winding_t *w, vec3_t normal, vec_t dist);
48 void FreeWinding (winding_t *w);
49 void WindingBounds (winding_t *w, vec3_t mins, vec3_t maxs);
51 void ChopWindingInPlace (winding_t **w, vec3_t normal, vec_t dist, vec_t epsilon);
52 // frees the original if clipped
54 void pw(winding_t *w);