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
26 vec3_t p[4]; // variable sized
29 #define MAX_POINTS_ON_WINDING 512
31 // you can define on_epsilon in the makefile as tighter
33 #define ON_EPSILON 0.1
36 winding_t *AllocWinding (int points);
37 vec_t WindingArea (winding_t *w);
38 void WindingCenter (winding_t *w, vec3_t center);
39 void ClipWindingEpsilon (winding_t *in, vec3_t normal, vec_t dist,
40 vec_t epsilon, winding_t **front, winding_t **back);
41 void ClipWindingEpsilonStrict (winding_t *in, vec3_t normal, vec_t dist,
42 vec_t epsilon, winding_t **front, winding_t **back);
43 winding_t *ChopWinding (winding_t *in, vec3_t normal, vec_t dist);
44 winding_t *CopyWinding (winding_t *w);
45 winding_t *ReverseWinding (winding_t *w);
46 winding_t *BaseWindingForPlane (vec3_t normal, vec_t dist);
47 void CheckWinding (winding_t *w);
48 void WindingPlane (winding_t *w, vec3_t normal, vec_t *dist);
49 void RemoveColinearPoints (winding_t *w);
50 int WindingOnPlaneSide (winding_t *w, vec3_t normal, vec_t dist);
51 void FreeWinding (winding_t *w);
52 void WindingBounds (winding_t *w, vec3_t mins, vec3_t maxs);
54 void AddWindingToConvexHull( winding_t *w, winding_t **hull, vec3_t normal );
56 void ChopWindingInPlace (winding_t **w, vec3_t normal, vec_t dist, vec_t epsilon);
57 // frees the original if clipped
59 void pw(winding_t *w);
62 ///////////////////////////////////////////////////////////////////////////////////////
63 // Below is double-precision stuff. This was initially needed by the base winding code
64 // in q3map2 brush processing.
65 ///////////////////////////////////////////////////////////////////////////////////////
70 vec3_accu_t p[4]; // variable sized
73 winding_accu_t *BaseWindingForPlaneAccu(vec3_t normal, vec_t dist);
74 void ChopWindingInPlaceAccu(winding_accu_t **w, vec3_t normal, vec_t dist, vec_t epsilon);
75 winding_t *CopyWindingAccuToRegular(winding_accu_t *w);
76 void FreeWindingAccu(winding_accu_t *w);