2007-11-04 03:34:51 +00:00
|
|
|
/*
|
|
|
|
|
Copyright (C) 1999-2007 id Software, Inc. and contributors.
|
|
|
|
|
For a list of contributors, see the accompanying CONTRIBUTORS file.
|
|
|
|
|
|
|
|
|
|
This file is part of GtkRadiant.
|
|
|
|
|
|
|
|
|
|
GtkRadiant 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.
|
|
|
|
|
|
|
|
|
|
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
|
|
|
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
int numpoints;
|
|
|
|
|
vec3_t p[4]; // variable sized
|
|
|
|
|
} winding_t;
|
|
|
|
|
|
|
|
|
|
#define MAX_POINTS_ON_WINDING 64
|
|
|
|
|
|
|
|
|
|
// you can define on_epsilon in the makefile as tighter
|
|
|
|
|
#ifndef ON_EPSILON
|
|
|
|
|
#define ON_EPSILON 0.1
|
|
|
|
|
#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);
|
