77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
|
/*
|
||
|
|
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[1]; // variable sized
|
||
|
|
} winding_t;
|
||
|
|
|
||
|
|
#define MAX_POINTS_ON_WINDING 512
|
||
|
|
|
||
|
|
// 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 );
|
||
|
|
void ClipWindingEpsilonStrict( 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 );
|
||
|
|
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Below is double-precision stuff. This was initially needed by the base winding code
|
||
|
|
// in q3map2 brush processing.
|
||
|
|
///////////////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
int numpoints;
|
||
|
|
vec3_accu_t p[1]; // variable sized
|
||
|
|
} winding_accu_t;
|
||
|
|
|
||
|
|
winding_accu_t *BaseWindingForPlaneAccu( vec3_t normal, vec_t dist );
|
||
|
|
void ChopWindingInPlaceAccu( winding_accu_t **w, vec3_t normal, vec_t dist, vec_t epsilon );
|
||
|
|
winding_t *CopyWindingAccuToRegular( winding_accu_t *w );
|
||
|
|
void FreeWindingAccu( winding_accu_t *w );
|