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[1]; // 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[1]; // 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 );