--- /dev/null
+/*
+===========================================================================
+Copyright (C) 1997-2006 Id Software, Inc.
+
+This file is part of Quake 2 Tools source code.
+
+Quake 2 Tools 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 2 Tools 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 Quake 2 Tools source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+===========================================================================
+*/
+
+#include "vis.h"
+#include "threads.h"
+#include "stdlib.h"
+
+int numportals;
+int portalclusters;
+
+char inbase[32];
+char outbase[32];
+
+portal_t *portals;
+leaf_t *leafs;
+
+int c_portaltest, c_portalpass, c_portalcheck;
+
+byte *uncompressedvis;
+
+byte *vismap, *vismap_p, *vismap_end; // past visfile
+int originalvismapsize;
+
+int leafbytes; // (portalclusters+63)>>3
+int leaflongs;
+
+int portalbytes, portallongs;
+
+qboolean fastvis;
+qboolean nosort;
+
+int testlevel = 2;
+
+int totalvis;
+
+portal_t *sorted_portals[MAX_MAP_PORTALS*2];
+
+
+//=============================================================================
+
+void PlaneFromWinding (winding_t *w, plane_t *plane)
+{
+ vec3_t v1, v2;
+
+// calc plane
+ VectorSubtract (w->points[2], w->points[1], v1);
+ VectorSubtract (w->points[0], w->points[1], v2);
+ CrossProduct (v2, v1, plane->normal);
+ VectorNormalize (plane->normal, plane->normal);
+ plane->dist = DotProduct (w->points[0], plane->normal);
+}
+
+
+/*
+==================
+NewWinding
+==================
+*/
+winding_t *NewWinding (int points)
+{
+ winding_t *w;
+ int size;
+
+ if (points > MAX_POINTS_ON_WINDING)
+ Error ("NewWinding: %i points", points);
+
+ size = (int)((winding_t *)0)->points[points];
+ w = malloc (size);
+ memset (w, 0, size);
+
+ return w;
+}
+
+
+
+void pw(winding_t *w)
+{
+ int i;
+ for (i=0 ; i<w->numpoints ; i++)
+ printf ("(%5.1f, %5.1f, %5.1f)\n",w->points[i][0], w->points[i][1],w->points[i][2]);
+}
+
+void prl(leaf_t *l)
+{
+ int i;
+ portal_t *p;
+ plane_t pl;
+
+ for (i=0 ; i<l->numportals ; i++)
+ {
+ p = l->portals[i];
+ pl = p->plane;
+ printf ("portal %4i to leaf %4i : %7.1f : (%4.1f, %4.1f, %4.1f)\n",(int)(p-portals),p->leaf,pl.dist, pl.normal[0], pl.normal[1], pl.normal[2]);
+ }
+}
+
+
+//=============================================================================
+
+/*
+=============
+SortPortals
+
+Sorts the portals from the least complex, so the later ones can reuse
+the earlier information.
+=============
+*/
+int PComp (const void *a, const void *b)
+{
+ if ( (*(portal_t **)a)->nummightsee == (*(portal_t **)b)->nummightsee)
+ return 0;
+ if ( (*(portal_t **)a)->nummightsee < (*(portal_t **)b)->nummightsee)
+ return -1;
+ return 1;
+}
+void SortPortals (void)
+{
+ int i;
+
+ for (i=0 ; i<numportals*2 ; i++)
+ sorted_portals[i] = &portals[i];
+
+ if (nosort)
+ return;
+ qsort (sorted_portals, numportals*2, sizeof(sorted_portals[0]), PComp);
+}
+
+
+/*
+==============
+LeafVectorFromPortalVector
+==============
+*/
+int LeafVectorFromPortalVector (byte *portalbits, byte *leafbits)
+{
+ int i;
+ portal_t *p;
+ int c_leafs;
+
+
+ memset (leafbits, 0, leafbytes);
+
+ for (i=0 ; i<numportals*2 ; i++)
+ {
+ if (portalbits[i>>3] & (1<<(i&7)) )
+ {
+ p = portals+i;
+ leafbits[p->leaf>>3] |= (1<<(p->leaf&7));
+ }
+ }
+
+ c_leafs = CountBits (leafbits, portalclusters);
+
+ return c_leafs;
+}
+
+
+/*
+===============
+ClusterMerge
+
+Merges the portal visibility for a leaf
+===============
+*/
+void ClusterMerge (int leafnum)
+{
+ leaf_t *leaf;
+ byte portalvector[MAX_PORTALS/8];
+ byte uncompressed[MAX_MAP_LEAFS/8];
+ byte compressed[MAX_MAP_LEAFS/8];
+ int i, j;
+ int numvis;
+ byte *dest;
+ portal_t *p;
+ int pnum;
+
+ // OR together all the portalvis bits
+
+ memset (portalvector, 0, portalbytes);
+ leaf = &leafs[leafnum];
+ for (i=0 ; i<leaf->numportals ; i++)
+ {
+ p = leaf->portals[i];
+ if (p->status != stat_done)
+ Error ("portal not done");
+ for (j=0 ; j<portallongs ; j++)
+ ((long *)portalvector)[j] |= ((long *)p->portalvis)[j];
+ pnum = p - portals;
+ portalvector[pnum>>3] |= 1<<(pnum&7);
+ }
+
+ // convert portal bits to leaf bits
+ numvis = LeafVectorFromPortalVector (portalvector, uncompressed);
+
+ if (uncompressed[leafnum>>3] & (1<<(leafnum&7)))
+ printf ("WARNING: Leaf portals saw into leaf\n");
+
+ uncompressed[leafnum>>3] |= (1<<(leafnum&7));
+ numvis++; // count the leaf itself
+
+ // save uncompressed for PHS calculation
+ memcpy (uncompressedvis + leafnum*leafbytes, uncompressed, leafbytes);
+
+//
+// compress the bit string
+//
+ qprintf ("cluster %4i : %4i visible\n", leafnum, numvis);
+ totalvis += numvis;
+
+ i = CompressVis (uncompressed, compressed);
+
+ dest = vismap_p;
+ vismap_p += i;
+
+ if (vismap_p > vismap_end)
+ Error ("Vismap expansion overflow");
+
+ dvis->bitofs[leafnum][DVIS_PVS] = dest-vismap;
+
+ memcpy (dest, compressed, i);
+}
+
+
+/*
+==================
+CalcPortalVis
+==================
+*/
+void CalcPortalVis (void)
+{
+ int i;
+
+// fastvis just uses mightsee for a very loose bound
+ if (fastvis)
+ {
+ for (i=0 ; i<numportals*2 ; i++)
+ {
+ portals[i].portalvis = portals[i].portalflood;
+ portals[i].status = stat_done;
+ }
+ return;
+ }
+
+ RunThreadsOnIndividual (numportals*2, true, PortalFlow);
+
+}
+
+
+/*
+==================
+CalcVis
+==================
+*/
+void CalcVis (void)
+{
+ int i;
+
+ RunThreadsOnIndividual (numportals*2, true, BasePortalVis);
+
+// RunThreadsOnIndividual (numportals*2, true, BetterPortalVis);
+
+ SortPortals ();
+
+ CalcPortalVis ();
+
+//
+// assemble the leaf vis lists by oring and compressing the portal lists
+//
+ for (i=0 ; i<portalclusters ; i++)
+ ClusterMerge (i);
+
+ printf ("Average clusters visible: %i\n", totalvis / portalclusters);
+}
+
+
+void SetPortalSphere (portal_t *p)
+{
+ int i;
+ vec3_t total, dist;
+ winding_t *w;
+ float r, bestr;
+
+ w = p->winding;
+ VectorCopy (vec3_origin, total);
+ for (i=0 ; i<w->numpoints ; i++)
+ {
+ VectorAdd (total, w->points[i], total);
+ }
+
+ for (i=0 ; i<3 ; i++)
+ total[i] /= w->numpoints;
+
+ bestr = 0;
+ for (i=0 ; i<w->numpoints ; i++)
+ {
+ VectorSubtract (w->points[i], total, dist);
+ r = VectorLength (dist);
+ if (r > bestr)
+ bestr = r;
+ }
+ VectorCopy (total, p->origin);
+ p->radius = bestr;
+}
+
+/*
+============
+LoadPortals
+============
+*/
+void LoadPortals (char *name)
+{
+ int i, j;
+ portal_t *p;
+ leaf_t *l;
+ char magic[80];
+ FILE *f;
+ int numpoints;
+ winding_t *w;
+ int leafnums[2];
+ plane_t plane;
+
+ if (!strcmp(name,"-"))
+ f = stdin;
+ else
+ {
+ f = fopen(name, "r");
+ if (!f)
+ Error ("LoadPortals: couldn't read %s\n",name);
+ }
+
+ if (fscanf (f,"%79s\n%i\n%i\n",magic, &portalclusters, &numportals) != 3)
+ Error ("LoadPortals: failed to read header");
+ if (strcmp(magic,PORTALFILE))
+ Error ("LoadPortals: not a portal file");
+
+ printf ("%4i portalclusters\n", portalclusters);
+ printf ("%4i numportals\n", numportals);
+
+ // these counts should take advantage of 64 bit systems automatically
+ leafbytes = ((portalclusters+63)&~63)>>3;
+ leaflongs = leafbytes/sizeof(long);
+
+ portalbytes = ((numportals*2+63)&~63)>>3;
+ portallongs = portalbytes/sizeof(long);
+
+// each file portal is split into two memory portals
+ portals = malloc(2*numportals*sizeof(portal_t));
+ memset (portals, 0, 2*numportals*sizeof(portal_t));
+
+ leafs = malloc(portalclusters*sizeof(leaf_t));
+ memset (leafs, 0, portalclusters*sizeof(leaf_t));
+
+ originalvismapsize = portalclusters*leafbytes;
+ uncompressedvis = malloc(originalvismapsize);
+
+ vismap = vismap_p = dvisdata;
+ dvis->numclusters = portalclusters;
+ vismap_p = (byte *)&dvis->bitofs[portalclusters];
+
+ vismap_end = vismap + MAX_MAP_VISIBILITY;
+
+ for (i=0, p=portals ; i<numportals ; i++)
+ {
+ if (fscanf (f, "%i %i %i ", &numpoints, &leafnums[0], &leafnums[1])
+ != 3)
+ Error ("LoadPortals: reading portal %i", i);
+ if (numpoints > MAX_POINTS_ON_WINDING)
+ Error ("LoadPortals: portal %i has too many points", i);
+ if ( (unsigned)leafnums[0] > portalclusters
+ || (unsigned)leafnums[1] > portalclusters)
+ Error ("LoadPortals: reading portal %i", i);
+
+ w = p->winding = NewWinding (numpoints);
+ w->original = true;
+ w->numpoints = numpoints;
+
+ for (j=0 ; j<numpoints ; j++)
+ {
+ double v[3];
+ int k;
+
+ // scanf into double, then assign to vec_t
+ // so we don't care what size vec_t is
+ if (fscanf (f, "(%lf %lf %lf ) "
+ , &v[0], &v[1], &v[2]) != 3)
+ Error ("LoadPortals: reading portal %i", i);
+ for (k=0 ; k<3 ; k++)
+ w->points[j][k] = v[k];
+ }
+ fscanf (f, "\n");
+
+ // calc plane
+ PlaneFromWinding (w, &plane);
+
+ // create forward portal
+ l = &leafs[leafnums[0]];
+ if (l->numportals == MAX_PORTALS_ON_LEAF)
+ Error ("Leaf with too many portals");
+ l->portals[l->numportals] = p;
+ l->numportals++;
+
+ p->winding = w;
+ VectorSubtract (vec3_origin, plane.normal, p->plane.normal);
+ p->plane.dist = -plane.dist;
+ p->leaf = leafnums[1];
+ SetPortalSphere (p);
+ p++;
+
+ // create backwards portal
+ l = &leafs[leafnums[1]];
+ if (l->numportals == MAX_PORTALS_ON_LEAF)
+ Error ("Leaf with too many portals");
+ l->portals[l->numportals] = p;
+ l->numportals++;
+
+ p->winding = NewWinding(w->numpoints);
+ p->winding->numpoints = w->numpoints;
+ for (j=0 ; j<w->numpoints ; j++)
+ {
+ VectorCopy (w->points[w->numpoints-1-j], p->winding->points[j]);
+ }
+
+ p->plane = plane;
+ p->leaf = leafnums[0];
+ SetPortalSphere (p);
+ p++;
+
+ }
+
+ fclose (f);
+}
+
+
+/*
+================
+CalcPHS
+
+Calculate the PHS (Potentially Hearable Set)
+by ORing together all the PVS visible from a leaf
+================
+*/
+void CalcPHS (void)
+{
+ int i, j, k, l, index;
+ int bitbyte;
+ long *dest, *src;
+ byte *scan;
+ int count;
+ byte uncompressed[MAX_MAP_LEAFS/8];
+ byte compressed[MAX_MAP_LEAFS/8];
+
+ printf ("Building PHS...\n");
+
+ count = 0;
+ for (i=0 ; i<portalclusters ; i++)
+ {
+ scan = uncompressedvis + i*leafbytes;
+ memcpy (uncompressed, scan, leafbytes);
+ for (j=0 ; j<leafbytes ; j++)
+ {
+ bitbyte = scan[j];
+ if (!bitbyte)
+ continue;
+ for (k=0 ; k<8 ; k++)
+ {
+ if (! (bitbyte & (1<<k)) )
+ continue;
+ // OR this pvs row into the phs
+ index = ((j<<3)+k);
+ if (index >= portalclusters)
+ Error ("Bad bit in PVS"); // pad bits should be 0
+ src = (long *)(uncompressedvis + index*leafbytes);
+ dest = (long *)uncompressed;
+ for (l=0 ; l<leaflongs ; l++)
+ ((long *)uncompressed)[l] |= src[l];
+ }
+ }
+ for (j=0 ; j<portalclusters ; j++)
+ if (uncompressed[j>>3] & (1<<(j&7)) )
+ count++;
+
+ //
+ // compress the bit string
+ //
+ j = CompressVis (uncompressed, compressed);
+
+ dest = (long *)vismap_p;
+ vismap_p += j;
+
+ if (vismap_p > vismap_end)
+ Error ("Vismap expansion overflow");
+
+ dvis->bitofs[i][DVIS_PHS] = (byte *)dest-vismap;
+
+ memcpy (dest, compressed, j);
+ }
+
+ printf ("Average clusters hearable: %i\n", count/portalclusters);
+}
+
+/*
+===========
+main
+===========
+*/
+int main (int argc, char **argv)
+{
+ char portalfile[1024];
+ char source[1024];
+ char name[1024];
+ int i;
+ double start, end;
+
+ printf ("---- vis ----\n");
+
+ verbose = false;
+ for (i=1 ; i<argc ; i++)
+ {
+ if (!strcmp(argv[i],"-threads"))
+ {
+ numthreads = atoi (argv[i+1]);
+ i++;
+ }
+ else if (!strcmp(argv[i], "-fast"))
+ {
+ printf ("fastvis = true\n");
+ fastvis = true;
+ }
+ else if (!strcmp(argv[i], "-level"))
+ {
+ testlevel = atoi(argv[i+1]);
+ printf ("testlevel = %i\n", testlevel);
+ i++;
+ }
+ else if (!strcmp(argv[i], "-v"))
+ {
+ printf ("verbose = true\n");
+ verbose = true;
+ }
+ else if (!strcmp (argv[i],"-nosort"))
+ {
+ printf ("nosort = true\n");
+ nosort = true;
+ }
+ else if (!strcmp (argv[i],"-tmpin"))
+ strcpy (inbase, "/tmp");
+ else if (!strcmp (argv[i],"-tmpout"))
+ strcpy (outbase, "/tmp");
+ else if (argv[i][0] == '-')
+ Error ("Unknown option \"%s\"", argv[i]);
+ else
+ break;
+ }
+
+ if (i != argc - 1)
+ Error ("usage: vis [-threads #] [-level 0-4] [-fast] [-v] bspfile");
+
+ start = I_FloatTime ();
+
+ ThreadSetDefault ();
+
+ SetQdirFromPath (argv[i]);
+ strcpy (source, ExpandArg(argv[i]));
+ StripExtension (source);
+ DefaultExtension (source, ".bsp");
+
+ sprintf (name, "%s%s", inbase, source);
+ printf ("reading %s\n", name);
+ LoadBSPFile (name);
+ if (numnodes == 0 || numfaces == 0)
+ Error ("Empty map");
+
+ sprintf (portalfile, "%s%s", inbase, ExpandArg(argv[i]));
+ StripExtension (portalfile);
+ strcat (portalfile, ".prt");
+
+ printf ("reading %s\n", portalfile);
+ LoadPortals (portalfile);
+
+ CalcVis ();
+
+ CalcPHS ();
+
+ visdatasize = vismap_p - dvisdata;
+ printf ("visdatasize:%i compressed from %i\n", visdatasize, originalvismapsize*2);
+
+ sprintf (name, "%s%s", outbase, source);
+ printf ("writing %s\n", name);
+ WriteBSPFile (name);
+
+ end = I_FloatTime ();
+ printf ("%5.1f seconds elapsed\n", end-start);
+
+ return 0;
+}
+
projects / xonotic / netradiant.git / blobdiff