ref: b8c0e4deccffcd668f7d08ffc1fe16147e9e894a
dir: /code/bspc/textures.c/
/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena source code 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.
Quake III Arena source code 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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include "qbsp.h"
#include "l_bsp_q2.h"
int nummiptex;
textureref_t textureref[MAX_MAP_TEXTURES];
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
int FindMiptex (char *name)
{
int i;
char path[1024];
miptex_t *mt;
for (i = 0; i < nummiptex; i++)
{
if (!strcmp (name, textureref[i].name))
{
return i;
} //end if
} //end for
if (nummiptex == MAX_MAP_TEXTURES)
Error ("MAX_MAP_TEXTURES");
strcpy (textureref[i].name, name);
// load the miptex to get the flags and values
sprintf (path, "%stextures/%s.wal", gamedir, name);
if (TryLoadFile (path, (void **)&mt) != -1)
{
textureref[i].value = LittleLong (mt->value);
textureref[i].flags = LittleLong (mt->flags);
textureref[i].contents = LittleLong (mt->contents);
strcpy (textureref[i].animname, mt->animname);
FreeMemory(mt);
} //end if
nummiptex++;
if (textureref[i].animname[0])
FindMiptex (textureref[i].animname);
return i;
} //end of the function FindMipTex
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
vec3_t baseaxis[18] =
{
{0,0,1}, {1,0,0}, {0,-1,0}, // floor
{0,0,-1}, {1,0,0}, {0,-1,0}, // ceiling
{1,0,0}, {0,1,0}, {0,0,-1}, // west wall
{-1,0,0}, {0,1,0}, {0,0,-1}, // east wall
{0,1,0}, {1,0,0}, {0,0,-1}, // south wall
{0,-1,0}, {1,0,0}, {0,0,-1} // north wall
};
void TextureAxisFromPlane(plane_t *pln, vec3_t xv, vec3_t yv)
{
int bestaxis;
vec_t dot,best;
int i;
best = 0;
bestaxis = 0;
for (i=0 ; i<6 ; i++)
{
dot = DotProduct (pln->normal, baseaxis[i*3]);
if (dot > best)
{
best = dot;
bestaxis = i;
}
}
VectorCopy (baseaxis[bestaxis*3+1], xv);
VectorCopy (baseaxis[bestaxis*3+2], yv);
} //end of the function TextureAxisFromPlane
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
int TexinfoForBrushTexture(plane_t *plane, brush_texture_t *bt, vec3_t origin)
{
vec3_t vecs[2];
int sv, tv;
vec_t ang, sinv, cosv;
vec_t ns, nt;
texinfo_t tx, *tc;
int i, j, k;
float shift[2];
brush_texture_t anim;
int mt;
if (!bt->name[0])
return 0;
memset (&tx, 0, sizeof(tx));
strcpy (tx.texture, bt->name);
TextureAxisFromPlane(plane, vecs[0], vecs[1]);
shift[0] = DotProduct (origin, vecs[0]);
shift[1] = DotProduct (origin, vecs[1]);
if (!bt->scale[0])
bt->scale[0] = 1;
if (!bt->scale[1])
bt->scale[1] = 1;
// rotate axis
if (bt->rotate == 0)
{ sinv = 0 ; cosv = 1; }
else if (bt->rotate == 90)
{ sinv = 1 ; cosv = 0; }
else if (bt->rotate == 180)
{ sinv = 0 ; cosv = -1; }
else if (bt->rotate == 270)
{ sinv = -1 ; cosv = 0; }
else
{
ang = bt->rotate / 180 * Q_PI;
sinv = sin(ang);
cosv = cos(ang);
}
if (vecs[0][0])
sv = 0;
else if (vecs[0][1])
sv = 1;
else
sv = 2;
if (vecs[1][0])
tv = 0;
else if (vecs[1][1])
tv = 1;
else
tv = 2;
for (i=0 ; i<2 ; i++)
{
ns = cosv * vecs[i][sv] - sinv * vecs[i][tv];
nt = sinv * vecs[i][sv] + cosv * vecs[i][tv];
vecs[i][sv] = ns;
vecs[i][tv] = nt;
}
for (i=0 ; i<2 ; i++)
for (j=0 ; j<3 ; j++)
tx.vecs[i][j] = vecs[i][j] / bt->scale[i];
tx.vecs[0][3] = bt->shift[0] + shift[0];
tx.vecs[1][3] = bt->shift[1] + shift[1];
tx.flags = bt->flags;
tx.value = bt->value;
//
// find the texinfo
//
tc = texinfo;
for (i=0 ; i<numtexinfo ; i++, tc++)
{
if (tc->flags != tx.flags)
continue;
if (tc->value != tx.value)
continue;
for (j=0 ; j<2 ; j++)
{
if (strcmp (tc->texture, tx.texture))
goto skip;
for (k=0 ; k<4 ; k++)
{
if (tc->vecs[j][k] != tx.vecs[j][k])
goto skip;
}
}
return i;
skip:;
}
*tc = tx;
numtexinfo++;
// load the next animation
mt = FindMiptex (bt->name);
if (textureref[mt].animname[0])
{
anim = *bt;
strcpy (anim.name, textureref[mt].animname);
tc->nexttexinfo = TexinfoForBrushTexture (plane, &anim, origin);
}
else
tc->nexttexinfo = -1;
return i;
} //end of the function TexinfoForBrushTexture