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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Replace markers in Radiance scene description with objects or instances. |
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* |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <ctype.h> |
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#include <math.h> |
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#include "fvect.h" |
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|
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#ifdef M_PI |
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#define PI M_PI |
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#define PI ((double)M_PI) |
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#else |
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#define PI 3.14159265358979323846 |
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#endif |
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|
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#define FEQ(a,b) ((a)-(b) <= 1e-7 && (b)-(a) <= 1e-7) |
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|
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#define MAXVERT 6 /* maximum number of vertices for markers */ |
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#define MAXMARK 32 /* maximum number of markers */ |
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typedef struct { |
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short beg, end; /* beginning and ending vertex */ |
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float len2; /* length squared */ |
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} EDGE; /* a marker edge */ |
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|
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int expand = 0; /* expand commands? */ |
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struct mrkr { |
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char *modout; /* output modifier */ |
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double mscale; /* scale by this to get unit */ |
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char *modin; /* input modifier indicating marker */ |
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char *objname; /* output object file or octree */ |
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int doxform; /* true if xform, false if instance */ |
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} marker[MAXMARK]; /* array of markers */ |
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int nmarkers = 0; /* number of markers */ |
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|
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char *modout = "void"; /* output modifier (for instances) */ |
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int expand; /* expand commands? */ |
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|
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double markscale = 0.0; /* scale markers by this to get unit */ |
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char *modin = NULL; /* input modifier indicating marker */ |
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char *objname = NULL; /* output object file (octree if instance) */ |
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int doxform; /* true if xform, false if instance */ |
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char *progname; |
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int i, j; |
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progname = argv[0]; |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
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switch (argv[i][1]) { |
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case 'i': |
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doxform = 0; |
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objname = argv[++i]; |
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break; |
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case 'x': |
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doxform = 1; |
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objname = argv[++i]; |
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break; |
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case 'e': |
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expand = !expand; |
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break; |
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case 'm': |
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modout = argv[++i]; |
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break; |
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case 's': |
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markscale = atof(argv[++i]); |
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break; |
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default: |
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i = 1; |
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while (i < argc && argv[i][0] == '-') { |
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do { |
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switch (argv[i][1]) { |
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case 'i': |
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marker[nmarkers].doxform = 0; |
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marker[nmarkers].objname = argv[++i]; |
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break; |
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case 'x': |
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marker[nmarkers].doxform = 1; |
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marker[nmarkers].objname = argv[++i]; |
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break; |
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case 'e': |
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expand = 1; |
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break; |
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case 'm': |
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marker[nmarkers].modout = argv[++i]; |
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break; |
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case 's': |
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marker[nmarkers].mscale = atof(argv[++i]); |
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break; |
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default: |
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goto userr; |
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} |
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if (++i >= argc) |
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goto userr; |
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} while (argv[i][0] == '-'); |
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if (marker[nmarkers].objname == NULL) |
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goto userr; |
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} |
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if (i < argc) |
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modin = argv[i++]; |
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if (objname == NULL || modin == NULL) |
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marker[nmarkers++].modin = argv[i++]; |
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if (nmarkers >= MAXMARK) |
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break; |
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marker[nmarkers].mscale = marker[nmarkers-1].mscale; |
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} |
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if (nmarkers == 0) |
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goto userr; |
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/* simple header */ |
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putchar('#'); |
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exit(0); |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-e][-s size][-m modout] {-x objfile|-i octree} modname [file ..]\n", |
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"Usage: %s [-e][-s size][-m modout] {-x objfile|-i octree} modname .. [file ..]\n", |
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progname); |
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exit(1); |
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} |
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FILE *fin; |
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{ |
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char buf[128], typ[16], nam[128]; |
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int i, j, n; |
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int i, n; |
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register int j; |
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if (fscanf(fin, "%s %s %s", buf, typ, nam) != 3) |
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goto readerr; |
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if (!strcmp(buf, modin) && !strcmp(typ, "polygon")) { |
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replace(fname, nam, fin); |
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return; |
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} |
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if (!strcmp(typ, "polygon")) |
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for (j = 0; j < nmarkers; j++) |
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if (!strcmp(buf, marker[j].modin)) { |
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replace(fname, &marker[j], nam, fin); |
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return; |
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} |
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printf("\n%s %s %s\n", buf, typ, nam); |
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if (!strcmp(typ, "alias")) { /* alias special case */ |
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if (fscanf(fin, "%s", buf) != 1) |
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goto readerr; |
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printf("%d", n); |
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for (j = 0; j < n; j++) { |
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if (fscanf(fin, "%s", buf) != 1) |
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if (fgetword(buf, sizeof(buf), fin) == NULL) |
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goto readerr; |
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if (j%3 == 0) |
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putchar('\n'); |
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printf("\t%s", buf); |
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putchar('\t'); |
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fputword(buf, stdout); |
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} |
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putchar('\n'); |
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} |
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} |
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replace(fname, mark, fin) /* replace marker */ |
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char *fname, *mark; |
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replace(fname, m, mark, fin) /* replace marker */ |
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char *fname; |
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register struct mrkr *m; |
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char *mark; |
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FILE *fin; |
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{ |
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int n; |
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char buf[256]; |
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if (doxform) { |
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buf[0] = '\0'; /* bug fix thanks to schorsch */ |
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if (m->doxform) { |
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sprintf(buf, "xform -e -n %s", mark); |
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if (buildxf(buf+strlen(buf), fin) < 0) |
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if (m->modout != NULL) |
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sprintf(buf+strlen(buf), " -m %s", m->modout); |
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if (buildxf(buf+strlen(buf), m->mscale, fin) < 0) |
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goto badxf; |
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sprintf(buf+strlen(buf), " %s", objname); |
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sprintf(buf+strlen(buf), " %s", m->objname); |
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if (expand) { |
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fflush(stdout); |
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system(buf); |
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} else |
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printf("\n!%s\n", buf); |
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} else { |
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if ((n = buildxf(buf, fin)) < 0) |
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if ((n = buildxf(buf, m->mscale, fin)) < 0) |
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goto badxf; |
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printf("\n%s instance %s\n", modout, mark); |
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printf("%d %s%s\n", n+1, objname, buf); |
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printf("\n0\n0\n"); |
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printf("\n%s instance %s\n", |
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m->modout==NULL?"void":m->modout, mark); |
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printf("%d %s%s\n0\n0\n", n+1, m->objname, buf); |
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} |
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return; |
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badxf: |
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int |
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buildxf(xf, fin) /* build transform for marker */ |
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char *xf; |
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buildxf(xf, markscale, fin) /* build transform for marker */ |
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register char *xf; |
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double markscale; |
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FILE *fin; |
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{ |
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static FVECT vlist[MAXVERT]; |
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if (markscale > 0.0) { /* add scale factor */ |
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sprintf(xf, " -s %f", xlen*markscale); |
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n += 2; |
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xf += strlen(xf); |
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while (*xf) ++xf; |
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} |
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/* add rotation */ |
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n += addrot(xf, xvec, yvec, zvec); |
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xf += strlen(xf); |
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while (*xf) ++xf; |
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/* add translation */ |
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n += 4; |
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sprintf(xf, " -t %f %f %f", vlist[elist[1].beg][0], |
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addrot(xf, xp, yp, zp) /* compute rotation (x,y,z) => (xp,yp,zp) */ |
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char *xf; |
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register char *xf; |
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FVECT xp, yp, zp; |
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{ |
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double tx, ty, tz; |
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int n; |
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double theta; |
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|
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< |
tx = atan2(yp[2], zp[2]); |
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< |
ty = asin(-xp[2]); |
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tz = atan2(xp[1], xp[0]); |
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sprintf(xf, " -rx %f -ry %f -rz %f", tx*(180./PI), |
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ty*(180./PI), tz*(180./PI)); |
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return(6); |
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n = 0; |
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theta = atan2(yp[2], zp[2]); |
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if (!FEQ(theta,0.0)) { |
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sprintf(xf, " -rx %f", theta*(180./PI)); |
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while (*xf) ++xf; |
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n += 2; |
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} |
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theta = asin(-xp[2]); |
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if (!FEQ(theta,0.0)) { |
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sprintf(xf, " -ry %f", theta*(180./PI)); |
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while (*xf) ++xf; |
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n += 2; |
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} |
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theta = atan2(xp[1], xp[0]); |
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if (!FEQ(theta,0.0)) { |
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sprintf(xf, " -rz %f", theta*(180./PI)); |
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/* while (*xf) ++xf; */ |
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n += 2; |
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} |
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return(n); |
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} |