mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-06 05:01:26 +00:00
844 lines
17 KiB
C
844 lines
17 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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See file, 'COPYING', for details.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((unused)) const char rcsid[] =
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"$Id$";
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#include <sys/types.h>
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#ifdef HAVE_SYS_WAIT_H
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# include <sys/wait.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include <errno.h>
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#include "QF/quakefs.h"
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#include "QF/sys.h"
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#include "bsp5.h"
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#include "options.h"
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options_t options;
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bsp_t *bsp;
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brushset_t *brushset;
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int c_activefaces, c_peakfaces;
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int c_activesurfaces, c_peaksurfaces;
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int c_activewindings, c_peakwindings;
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int c_activeportals, c_peakportals;
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int valid;
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char *argv0; // changed after fork();
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qboolean worldmodel;
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int hullnum;
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winding_t *
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BaseWindingForPlane (plane_t *p)
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{
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int i, x;
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vec_t max, v;
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vec3_t org, vright, vup;
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winding_t *w;
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// find the major axis
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max = -BOGUS_RANGE;
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x = -1;
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for (i = 0; i < 3; i++) {
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v = fabs (p->normal[i]);
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if (v > max) {
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x = i;
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max = v;
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}
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}
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if (x == -1)
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Sys_Error ("BaseWindingForPlane: no axis found");
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VectorZero (vup);
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switch (x) {
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case 0:
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case 1:
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vup[2] = 1;
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break;
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case 2:
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vup[0] = 1;
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break;
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}
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v = DotProduct (vup, p->normal);
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VectorMultSub (vup, v, p->normal, vup);
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_VectorNormalize (vup);
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VectorScale (p->normal, p->dist, org);
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CrossProduct (vup, p->normal, vright);
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VectorScale (vup, BOGUS_RANGE, vup);
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VectorScale (vright, BOGUS_RANGE, vright);
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// project a really big axis aligned box onto the plane
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w = NewWinding (4);
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VectorSubtract (org, vright, w->points[0]);
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VectorAdd (w->points[0], vup, w->points[0]);
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VectorAdd (org, vright, w->points[1]);
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VectorAdd (w->points[1], vup, w->points[1]);
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VectorAdd (org, vright, w->points[2]);
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VectorSubtract (w->points[2], vup, w->points[2]);
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VectorSubtract (org, vright, w->points[3]);
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VectorSubtract (w->points[3], vup, w->points[3]);
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w->numpoints = 4;
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return w;
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}
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winding_t *
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CopyWinding (winding_t *w)
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{
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int size;
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winding_t *c;
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size = (long) ((winding_t *) 0)->points[w->numpoints];
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c = malloc (size);
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memcpy (c, w, size);
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return c;
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}
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winding_t *
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CopyWindingReverse (winding_t *w)
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{
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int i, size;
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winding_t *c;
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size = (long) ((winding_t *) 0)->points[w->numpoints];
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c = malloc (size);
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c->numpoints = w->numpoints;
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for (i = 0; i < w->numpoints; i++) {
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// add points backwards
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VectorCopy (w->points[w->numpoints - 1 - i], c->points[i]);
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}
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return c;
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}
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void
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CheckWinding (winding_t * w)
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{
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}
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/*
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ClipWinding
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Clips the winding to the plane, returning the new winding on the positive
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side.
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Frees the input winding.
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If keepon is true, an exactly on-plane winding will be saved, otherwise
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it will be clipped away.
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*/
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winding_t *
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ClipWinding (winding_t *in, plane_t *split, qboolean keepon)
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{
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int maxpts, i, j;
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int *sides;
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int counts[3];
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vec_t dot;
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vec_t *dists;
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vec_t *p1, *p2;
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vec3_t mid;
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winding_t *neww;
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counts[0] = counts[1] = counts[2] = 0;
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sides = alloca ((in->numpoints + 1) * sizeof (int));
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dists = alloca ((in->numpoints + 1) * sizeof (vec_t));
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// determine sides for each point
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for (i = 0; i < in->numpoints; i++) {
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dot = DotProduct (in->points[i], split->normal);
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dot -= split->dist;
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dists[i] = dot;
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if (dot > ON_EPSILON)
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sides[i] = SIDE_FRONT;
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else if (dot < -ON_EPSILON)
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sides[i] = SIDE_BACK;
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else {
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sides[i] = SIDE_ON;
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}
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counts[sides[i]]++;
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}
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sides[i] = sides[0];
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dists[i] = dists[0];
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if (keepon && !counts[0] && !counts[1])
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return in;
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if (!counts[0]) {
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FreeWinding (in);
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return NULL;
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}
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if (!counts[1])
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return in;
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#if 0
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maxpts = in->numpoints + 4; // can't use counts[0]+2 because of fp
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// grouping errors
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#else
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maxpts = counts[0] + 2;
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#endif
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neww = NewWinding (maxpts);
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for (i = 0; i < in->numpoints; i++) {
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p1 = in->points[i];
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if (sides[i] == SIDE_ON) {
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if (neww->numpoints == maxpts)
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Sys_Error ("ClipWinding: points exceeded estimate");
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VectorCopy (p1, neww->points[neww->numpoints]);
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neww->numpoints++;
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continue;
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}
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if (sides[i] == SIDE_FRONT) {
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if (neww->numpoints == maxpts)
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Sys_Error ("ClipWinding: points exceeded estimate");
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VectorCopy (p1, neww->points[neww->numpoints]);
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neww->numpoints++;
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}
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if (sides[i + 1] == SIDE_ON || sides[i + 1] == sides[i])
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continue;
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if (neww->numpoints == maxpts)
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Sys_Error ("ClipWinding: points exceeded estimate");
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// generate a split point
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p2 = in->points[(i + 1) % in->numpoints];
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dot = dists[i] / (dists[i] - dists[i + 1]);
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for (j = 0; j < 3; j++) { // avoid round off error when possible
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if (split->normal[j] == 1)
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mid[j] = split->dist;
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else if (split->normal[j] == -1)
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mid[j] = -split->dist;
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else
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mid[j] = p1[j] + dot * (p2[j] - p1[j]);
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}
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VectorCopy (mid, neww->points[neww->numpoints]);
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neww->numpoints++;
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}
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// free the original winding
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FreeWinding (in);
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return neww;
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}
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/*
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DivideWinding
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Divides a winding by a plane, producing one or two windings. The
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original winding is not damaged or freed. If only on one side, the
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returned winding will be the input winding. If on both sides, two
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new windings will be created.
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*/
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void
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DivideWinding (winding_t *in, plane_t *split, winding_t **front,
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winding_t **back)
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{
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int maxpts, i;
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int counts[3];
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plane_t plane;
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vec_t dot;
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winding_t *tmp;
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counts[0] = counts[1] = counts[2] = 0;
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// determine sides for each point
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for (i = 0; i < in->numpoints; i++) {
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dot = DotProduct (in->points[i], split->normal) - split->dist;
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if (dot > ON_EPSILON)
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counts[SIDE_FRONT]++;
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else if (dot < -ON_EPSILON)
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counts[SIDE_BACK]++;
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}
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*front = *back = NULL;
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if (!counts[SIDE_FRONT]) {
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*back = in;
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return;
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}
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if (!counts[SIDE_BACK]) {
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*front = in;
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return;
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}
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maxpts = in->numpoints + 4; // can't use counts[0]+2 because
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// of fp grouping errors
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tmp = CopyWinding (in);
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*front = ClipWinding (tmp, split, 0);
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plane.dist = -split->dist;
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VectorNegate (split->normal, plane.normal);
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tmp = CopyWinding (in);
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*back = ClipWinding (tmp, &plane, 0);
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}
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winding_t *
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NewWinding (int points)
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{
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int size;
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winding_t *w;
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if (points < 3)
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Sys_Error ("NewWinding: %i points", points);
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c_activewindings++;
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if (c_activewindings > c_peakwindings)
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c_peakwindings = c_activewindings;
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size = (long) ((winding_t *) 0)->points[points];
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w = malloc (size);
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memset (w, 0, size);
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return w;
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}
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void
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FreeWinding (winding_t *w)
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{
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c_activewindings--;
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free (w);
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}
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face_t *
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AllocFace (void)
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{
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face_t *f;
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c_activefaces++;
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if (c_activefaces > c_peakfaces)
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c_peakfaces = c_activefaces;
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f = malloc (sizeof (face_t));
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memset (f, 0, sizeof (face_t));
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f->planenum = -1;
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return f;
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}
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void
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FreeFace (face_t *f)
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{
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c_activefaces--;
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free (f);
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}
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surface_t *
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AllocSurface (void)
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{
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surface_t *s;
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s = malloc (sizeof (surface_t));
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memset (s, 0, sizeof (surface_t));
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c_activesurfaces++;
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if (c_activesurfaces > c_peaksurfaces)
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c_peaksurfaces = c_activesurfaces;
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return s;
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}
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void
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FreeSurface (surface_t *s)
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{
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c_activesurfaces--;
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free (s);
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}
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portal_t *
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AllocPortal (void)
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{
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portal_t *p;
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c_activeportals++;
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if (c_activeportals > c_peakportals)
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c_peakportals = c_activeportals;
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p = malloc (sizeof (portal_t));
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memset (p, 0, sizeof (portal_t));
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return p;
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}
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void
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FreePortal (portal_t *p)
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{
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c_activeportals--;
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free (p);
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}
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node_t *
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AllocNode (void)
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{
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node_t *n;
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n = malloc (sizeof (node_t));
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memset (n, 0, sizeof (node_t));
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return n;
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}
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brush_t *
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AllocBrush (void)
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{
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brush_t *b;
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b = malloc (sizeof (brush_t));
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memset (b, 0, sizeof (brush_t));
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return b;
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}
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static void
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ProcessEntity (int entnum)
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{
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brushset_t *bs;
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char mod[80];
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entity_t *ent;
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surface_t *surfs;
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node_t *nodes;
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ent = &entities[entnum];
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if (!ent->brushes)
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return; // non-bmodel entity
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if (entnum > 0) {
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worldmodel = false;
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if (entnum == 1)
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qprintf ("--- Internal Entities ---\n");
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sprintf (mod, "*%i", bsp->nummodels);
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if (options.verbosity)
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PrintEntity (ent);
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if (hullnum == 0)
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printf ("MODEL: %s\n", mod);
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SetKeyValue (ent, "model", mod);
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} else
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worldmodel = true;
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// take the brush_ts and clip off all overlapping and contained faces,
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// leaving a perfect skin of the model with no hidden faces
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bs = Brush_LoadEntity (ent, hullnum);
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if (!bs->brushes) {
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PrintEntity (ent);
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Sys_Error ("Entity with no valid brushes");
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}
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brushset = bs;
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surfs = CSGFaces (bs);
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if (hullnum != 0) {
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nodes = SolidBSP (surfs, true);
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if (entnum == 0 && !options.nofill) {
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// assume non-world bmodels are simple
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PortalizeWorld (nodes);
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if (FillOutside (nodes)) {
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surfs = GatherNodeFaces (nodes);
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nodes = SolidBSP (surfs, false); // make a really good tree
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}
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FreeAllPortals (nodes);
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}
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WriteNodePlanes (nodes);
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WriteClipNodes (nodes);
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BumpModel (hullnum);
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} else {
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// SolidBSP generates a node tree
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//
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// if not the world, make a good tree first
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// the world is just going to make a bad tree
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// because the outside filling will force a regeneration later
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nodes = SolidBSP (surfs, entnum == 0);
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// build all the portals in the bsp tree
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// some portals are solid polygons, and some are paths to other leafs
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if (entnum == 0 && !options.nofill) {
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// assume non-world bmodels are simple
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PortalizeWorld (nodes);
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if (FillOutside (nodes)) {
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FreeAllPortals (nodes);
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// get the remaining faces together into surfaces again
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surfs = GatherNodeFaces (nodes);
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// merge polygons
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MergeAll (surfs);
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// make a really good tree
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nodes = SolidBSP (surfs, false);
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// make the real portals for vis tracing
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PortalizeWorldDetail (nodes);
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// save portal file for vis tracing
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WritePortalfile (nodes);
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// fix tjunctions
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tjunc (nodes);
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}
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FreeAllPortals (nodes);
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}
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WriteNodePlanes (nodes);
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MakeFaceEdges (nodes);
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WriteDrawNodes (nodes);
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}
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}
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static void
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UpdateEntLump (void)
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{
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int m, entnum;
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char mod[80];
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QFile *f;
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m = 1;
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for (entnum = 1; entnum < num_entities; entnum++) {
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if (!entities[entnum].brushes)
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continue;
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sprintf (mod, "*%i", m);
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SetKeyValue (&entities[entnum], "model", mod);
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m++;
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}
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printf ("Updating entities lump...\n");
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f = Qopen (options.bspfile, "rb");
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if (!f)
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Sys_Error ("couldn't open %s. %s", options.bspfile, strerror(errno));
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bsp = LoadBSPFile (f, Qfilesize (f));
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Qclose (f);
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WriteEntitiesToString ();
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f = Qopen (options.bspfile, "wb");
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if (!f)
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Sys_Error ("couldn't open %s. %s", options.bspfile, strerror(errno));
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WriteBSPFile (bsp, f);
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Qclose (f);
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}
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/*
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WriteClipHull
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Write the clipping hull out to a text file so the parent process can get it
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*/
|
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static void
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WriteClipHull (void)
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{
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FILE *f;
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dclipnode_t *d;
|
|
dplane_t *p;
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int i;
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|
|
options.hullfile[strlen (options.hullfile) - 1] = '0' + hullnum;
|
|
|
|
qprintf ("---- WriteClipHull ----\n");
|
|
qprintf ("Writing %s\n", options.hullfile);
|
|
|
|
f = fopen (options.hullfile, "w");
|
|
if (!f)
|
|
Sys_Error ("Couldn't open %s", options.hullfile);
|
|
|
|
fprintf (f, "%i\n", bsp->nummodels);
|
|
|
|
for (i = 0; i < bsp->nummodels; i++)
|
|
fprintf (f, "%i\n", bsp->models[i].headnode[hullnum]);
|
|
|
|
fprintf (f, "\n%i\n", bsp->numclipnodes);
|
|
|
|
for (i = 0; i < bsp->numclipnodes; i++) {
|
|
d = &bsp->clipnodes[i];
|
|
p = &bsp->planes[d->planenum];
|
|
// the node number is only written out for human readability
|
|
fprintf (f, "%5i : %f %f %f %f : %5i %5i\n", i, p->normal[0],
|
|
p->normal[1], p->normal[2], p->dist, d->children[0],
|
|
d->children[1]);
|
|
}
|
|
|
|
fclose (f);
|
|
}
|
|
|
|
/*
|
|
ReadClipHull
|
|
|
|
Read the files written out by the child processes
|
|
*/
|
|
static void
|
|
ReadClipHull (int hullnum)
|
|
{
|
|
FILE *f;
|
|
dclipnode_t d;
|
|
dplane_t p;
|
|
float f1, f2, f3, f4;
|
|
int firstclipnode, junk, c1, c2, i, j, n;
|
|
vec3_t norm;
|
|
|
|
options.hullfile[strlen (options.hullfile) - 1] = '0' + hullnum;
|
|
|
|
f = fopen (options.hullfile, "r");
|
|
if (!f)
|
|
Sys_Error ("Couldn't open %s", options.hullfile);
|
|
|
|
if (fscanf (f, "%d\n", &n) != 1)
|
|
Sys_Error ("Error parsing %s", options.hullfile);
|
|
|
|
if (n != bsp->nummodels)
|
|
Sys_Error ("ReadClipHull: hull had %i models, base had %i", n,
|
|
bsp->nummodels);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
fscanf (f, "%d\n", &j);
|
|
bsp->models[i].headnode[hullnum] = bsp->numclipnodes + j;
|
|
}
|
|
|
|
|
|
fscanf (f, "\n%d\n", &n);
|
|
firstclipnode = bsp->numclipnodes;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
if (bsp->numclipnodes == MAX_MAP_CLIPNODES)
|
|
Sys_Error ("ReadClipHull: MAX_MAP_CLIPNODES");
|
|
if (fscanf (f, "%d : %f %f %f %f : %d %d\n", &junk, &f1, &f2, &f3, &f4,
|
|
&c1, &c2) != 7)
|
|
Sys_Error ("Error parsing %s", options.hullfile);
|
|
|
|
p.normal[0] = f1;
|
|
p.normal[1] = f2;
|
|
p.normal[2] = f3;
|
|
p.dist = f4;
|
|
|
|
norm[0] = f1;
|
|
norm[1] = f2;
|
|
norm[2] = f3; // vec_t precision
|
|
p.type = PlaneTypeForNormal (norm);
|
|
|
|
d.children[0] = c1 >= 0 ? c1 + firstclipnode : c1;
|
|
d.children[1] = c2 >= 0 ? c2 + firstclipnode : c2;
|
|
d.planenum = FindFinalPlane (&p);
|
|
BSP_AddClipnode (bsp, &d);
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
CreateSingleHull (void)
|
|
{
|
|
int entnum;
|
|
|
|
// for each entity in the map file that has geometry
|
|
for (entnum = 0; entnum < num_entities; entnum++) {
|
|
ProcessEntity (entnum);
|
|
if (options.verbosity < 2)
|
|
options.verbosity = 0; // don't print rest of entities
|
|
}
|
|
|
|
if (hullnum)
|
|
WriteClipHull ();
|
|
}
|
|
|
|
static void
|
|
CreateHulls (void)
|
|
{
|
|
// commanded to create a single hull only
|
|
if (hullnum) {
|
|
CreateSingleHull ();
|
|
exit (0);
|
|
}
|
|
// commanded to use the allready existing hulls 1 and 2
|
|
if (options.usehulls) {
|
|
CreateSingleHull ();
|
|
return;
|
|
}
|
|
// commanded to ignore the hulls altogether
|
|
if (options.noclip) {
|
|
CreateSingleHull ();
|
|
return;
|
|
}
|
|
|
|
// create all the hulls
|
|
|
|
#ifdef __alpha
|
|
printf ("forking hull processes...\n");
|
|
// fork a process for each clipping hull
|
|
fflush (stdout);
|
|
if (!fork ()) {
|
|
hullnum = 1;
|
|
options.verbosity = 0;
|
|
options.drawflag = false;
|
|
sprintf (argv0, "HUL%i", hullnum);
|
|
} else if (!fork ()) {
|
|
hullnum = 2;
|
|
options.verbosity = 0;
|
|
options.drawflag = false;
|
|
sprintf (argv0, "HUL%i", hullnum);
|
|
}
|
|
CreateSingleHull ();
|
|
|
|
if (hullnum)
|
|
exit (0);
|
|
|
|
wait (NULL); // wait for clip hull process to finish
|
|
wait (NULL); // wait for clip hull process to finish
|
|
|
|
#else
|
|
// create the hulls sequentially
|
|
printf ("building hulls sequentially...\n");
|
|
|
|
hullnum = 1;
|
|
CreateSingleHull ();
|
|
|
|
bsp->nummodels = 0;
|
|
bsp->numplanes = 0;
|
|
bsp->numclipnodes = 0;
|
|
hullnum = 2;
|
|
CreateSingleHull ();
|
|
|
|
bsp->nummodels = 0;
|
|
bsp->numplanes = 0;
|
|
bsp->numclipnodes = 0;
|
|
hullnum = 0;
|
|
CreateSingleHull ();
|
|
#endif
|
|
|
|
}
|
|
|
|
static void
|
|
ProcessFile (void)
|
|
{
|
|
// create filenames
|
|
QFS_StripExtension (options.bspfile, options.hullfile);
|
|
strcat (options.hullfile, ".h0");
|
|
|
|
QFS_StripExtension (options.bspfile, options.portfile);
|
|
strcat (options.portfile, ".prt");
|
|
|
|
QFS_StripExtension (options.bspfile, options.pointfile);
|
|
strcat (options.pointfile, ".pts");
|
|
bsp = BSP_New ();
|
|
if (options.portal) {
|
|
LoadBSP ();
|
|
bsp2prt ();
|
|
return;
|
|
}
|
|
|
|
if (options.extract_textures) {
|
|
LoadBSP ();
|
|
extract_textures ();
|
|
return;
|
|
}
|
|
|
|
// load brushes and entities
|
|
LoadMapFile (options.mapfile);
|
|
|
|
if (options.onlyents) {
|
|
UpdateEntLump ();
|
|
return;
|
|
}
|
|
|
|
remove (options.bspfile);
|
|
if (!options.usehulls) {
|
|
options.hullfile[strlen (options.hullfile) - 1] = '1';
|
|
remove (options.hullfile);
|
|
options.hullfile[strlen (options.hullfile) - 1] = '2';
|
|
remove (options.hullfile);
|
|
}
|
|
remove (options.portfile);
|
|
remove (options.pointfile);
|
|
|
|
// init the tables to be shared by all models
|
|
BeginBSPFile ();
|
|
|
|
// the clipping hulls will be written out to text files by forked processes
|
|
CreateHulls ();
|
|
|
|
ReadClipHull (1);
|
|
ReadClipHull (2);
|
|
|
|
WriteEntitiesToString ();
|
|
FinishBSPFile ();
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
double start, end;
|
|
|
|
// let forked processes change name for ps status
|
|
this_program = argv0 = argv[0];
|
|
|
|
// check command line flags
|
|
DecodeArgs (argc, argv);
|
|
|
|
// XXX SetQdirFromPath (argv[i]);
|
|
|
|
// do it!
|
|
start = Sys_DoubleTime ();
|
|
ProcessFile ();
|
|
end = Sys_DoubleTime ();
|
|
printf ("%5.1f seconds elapsed\n", end - start);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
qprintf (const char *fmt, ...)
|
|
{
|
|
va_list argptr;
|
|
|
|
if (!options.verbosity)
|
|
return;
|
|
|
|
va_start (argptr, fmt);
|
|
vprintf (fmt, argptr);
|
|
va_end (argptr);
|
|
}
|