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/*
===========================================================================
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"
int c_glfaces;
int PortalVisibleSides (portal_t *p)
{
int fcon, bcon;
if (!p->onnode)
return 0; // outside
fcon = p->nodes[0]->opaque;
bcon = p->nodes[1]->opaque;
// same contents never create a face
if (fcon == bcon)
return 0;
if (!fcon)
return 1;
if (!bcon)
return 2;
return 0;
}
void OutputWinding (winding_t *w, FILE *glview)
{
static int level = 128;
vec_t light;
int i;
fprintf (glview, "%i\n", w->numpoints);
level+=28;
light = (level&255)/255.0;
for (i=0 ; i<w->numpoints ; i++)
{
fprintf (glview, "%6.3f %6.3f %6.3f %6.3f %6.3f %6.3f\n",
w->p[i][0],
w->p[i][1],
w->p[i][2],
light,
light,
light);
}
fprintf (glview, "\n");
}
/*
=============
OutputPortal
=============
*/
void OutputPortal (portal_t *p, FILE *glview)
{
winding_t *w;
int sides;
sides = PortalVisibleSides (p);
if (!sides)
return;
c_glfaces++;
w = p->winding;
if (sides == 2) // back side
w = ReverseWinding (w);
OutputWinding (w, glview);
if (sides == 2)
FreeWinding(w);
}
/*
=============
WriteGLView_r
=============
*/
void WriteGLView_r (node_t *node, FILE *glview)
{
portal_t *p, *nextp;
if (node->planenum != PLANENUM_LEAF)
{
WriteGLView_r (node->children[0], glview);
WriteGLView_r (node->children[1], glview);
return;
}
// write all the portals
for (p=node->portals ; p ; p=nextp)
{
if (p->nodes[0] == node)
{
OutputPortal (p, glview);
nextp = p->next[0];
}
else
nextp = p->next[1];
}
}
/*
=============
WriteGLView
=============
*/
void WriteGLView (tree_t *tree, char *source)
{
char name[1024];
FILE *glview;
c_glfaces = 0;
sprintf (name, "%s%s.gl",outbase, source);
_printf ("Writing %s\n", name);
glview = fopen (name, "w");
if (!glview)
Error ("Couldn't open %s", name);
WriteGLView_r (tree->headnode, glview);
fclose (glview);
_printf ("%5i c_glfaces\n", c_glfaces);
}
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