1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.6 |
static const char RCSid[] = "$Id"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Replace markers in Radiance scene description with objects or instances. |
6 |
|
|
* |
7 |
|
|
* Created: 17 Feb 1991 Greg Ward |
8 |
|
|
*/ |
9 |
|
|
|
10 |
greg |
2.5 |
#include <stdlib.h> |
11 |
greg |
1.1 |
#include <ctype.h> |
12 |
|
|
#include <math.h> |
13 |
schorsch |
2.7 |
#include <stdio.h> |
14 |
greg |
1.1 |
|
15 |
schorsch |
2.7 |
#include "platform.h" |
16 |
schorsch |
2.9 |
#include "rtio.h" |
17 |
schorsch |
2.8 |
#include "rtprocess.h" |
18 |
greg |
1.1 |
#include "fvect.h" |
19 |
|
|
|
20 |
|
|
#ifdef M_PI |
21 |
gregl |
2.4 |
#define PI ((double)M_PI) |
22 |
greg |
1.1 |
#else |
23 |
|
|
#define PI 3.14159265358979323846 |
24 |
|
|
#endif |
25 |
|
|
|
26 |
greg |
1.2 |
#define FEQ(a,b) ((a)-(b) <= 1e-7 && (b)-(a) <= 1e-7) |
27 |
|
|
|
28 |
greg |
1.1 |
#define MAXVERT 6 /* maximum number of vertices for markers */ |
29 |
greg |
2.2 |
#define MAXMARK 32 /* maximum number of markers */ |
30 |
greg |
1.1 |
|
31 |
|
|
typedef struct { |
32 |
|
|
short beg, end; /* beginning and ending vertex */ |
33 |
|
|
float len2; /* length squared */ |
34 |
|
|
} EDGE; /* a marker edge */ |
35 |
|
|
|
36 |
greg |
2.2 |
struct mrkr { |
37 |
|
|
char *modout; /* output modifier */ |
38 |
|
|
double mscale; /* scale by this to get unit */ |
39 |
|
|
char *modin; /* input modifier indicating marker */ |
40 |
|
|
char *objname; /* output object file or octree */ |
41 |
|
|
int doxform; /* true if xform, false if instance */ |
42 |
|
|
} marker[MAXMARK]; /* array of markers */ |
43 |
|
|
int nmarkers = 0; /* number of markers */ |
44 |
greg |
1.1 |
|
45 |
greg |
2.2 |
int expand; /* expand commands? */ |
46 |
greg |
1.1 |
|
47 |
|
|
char *progname; |
48 |
|
|
|
49 |
schorsch |
2.9 |
static void convert(char *name, FILE *fin); |
50 |
|
|
static void cvcomm(char *fname, FILE *fin); |
51 |
|
|
static void cvobject(char *fname, FILE *fin); |
52 |
|
|
static void replace(char *fname, struct mrkr *m, char *mark, FILE *fin); |
53 |
|
|
static int edgecmp(const void *e1, const void *e2); |
54 |
|
|
static int buildxf(char *xf, double markscale, FILE *fin); |
55 |
|
|
static int addrot(char *xf, FVECT xp, FVECT yp, FVECT zp); |
56 |
greg |
1.1 |
|
57 |
schorsch |
2.9 |
|
58 |
|
|
int |
59 |
|
|
main( |
60 |
|
|
int argc, |
61 |
|
|
char *argv[] |
62 |
|
|
) |
63 |
greg |
1.1 |
{ |
64 |
|
|
FILE *fp; |
65 |
|
|
int i, j; |
66 |
|
|
|
67 |
|
|
progname = argv[0]; |
68 |
greg |
2.2 |
i = 1; |
69 |
|
|
while (i < argc && argv[i][0] == '-') { |
70 |
|
|
do { |
71 |
|
|
switch (argv[i][1]) { |
72 |
|
|
case 'i': |
73 |
|
|
marker[nmarkers].doxform = 0; |
74 |
|
|
marker[nmarkers].objname = argv[++i]; |
75 |
|
|
break; |
76 |
|
|
case 'x': |
77 |
|
|
marker[nmarkers].doxform = 1; |
78 |
|
|
marker[nmarkers].objname = argv[++i]; |
79 |
|
|
break; |
80 |
|
|
case 'e': |
81 |
|
|
expand = 1; |
82 |
|
|
break; |
83 |
|
|
case 'm': |
84 |
|
|
marker[nmarkers].modout = argv[++i]; |
85 |
|
|
break; |
86 |
|
|
case 's': |
87 |
|
|
marker[nmarkers].mscale = atof(argv[++i]); |
88 |
|
|
break; |
89 |
|
|
default: |
90 |
|
|
goto userr; |
91 |
|
|
} |
92 |
|
|
if (++i >= argc) |
93 |
|
|
goto userr; |
94 |
|
|
} while (argv[i][0] == '-'); |
95 |
|
|
if (marker[nmarkers].objname == NULL) |
96 |
|
|
goto userr; |
97 |
|
|
marker[nmarkers++].modin = argv[i++]; |
98 |
|
|
if (nmarkers >= MAXMARK) |
99 |
greg |
1.1 |
break; |
100 |
greg |
2.2 |
marker[nmarkers].mscale = marker[nmarkers-1].mscale; |
101 |
|
|
} |
102 |
|
|
if (nmarkers == 0) |
103 |
greg |
1.1 |
goto userr; |
104 |
|
|
/* simple header */ |
105 |
|
|
putchar('#'); |
106 |
|
|
for (j = 0; j < i; j++) { |
107 |
|
|
putchar(' '); |
108 |
|
|
fputs(argv[j], stdout); |
109 |
|
|
} |
110 |
|
|
putchar('\n'); |
111 |
|
|
if (i == argc) |
112 |
|
|
convert("<stdin>", stdin); |
113 |
|
|
else |
114 |
|
|
for ( ; i < argc; i++) { |
115 |
|
|
if ((fp = fopen(argv[i], "r")) == NULL) { |
116 |
|
|
perror(argv[i]); |
117 |
|
|
exit(1); |
118 |
|
|
} |
119 |
|
|
convert(argv[i], fp); |
120 |
|
|
fclose(fp); |
121 |
|
|
} |
122 |
schorsch |
2.9 |
return 0; |
123 |
greg |
1.1 |
userr: |
124 |
|
|
fprintf(stderr, |
125 |
greg |
2.2 |
"Usage: %s [-e][-s size][-m modout] {-x objfile|-i octree} modname .. [file ..]\n", |
126 |
greg |
1.1 |
progname); |
127 |
schorsch |
2.9 |
return 1; |
128 |
greg |
1.1 |
} |
129 |
|
|
|
130 |
|
|
|
131 |
schorsch |
2.9 |
void |
132 |
|
|
convert( /* replace marks in a stream */ |
133 |
|
|
char *name, |
134 |
|
|
register FILE *fin |
135 |
|
|
) |
136 |
greg |
1.1 |
{ |
137 |
|
|
register int c; |
138 |
|
|
|
139 |
|
|
while ((c = getc(fin)) != EOF) { |
140 |
|
|
if (isspace(c)) /* blank */ |
141 |
|
|
continue; |
142 |
|
|
if (c == '#') { /* comment */ |
143 |
|
|
putchar(c); |
144 |
|
|
do { |
145 |
|
|
if ((c = getc(fin)) == EOF) |
146 |
|
|
return; |
147 |
|
|
putchar(c); |
148 |
|
|
} while (c != '\n'); |
149 |
|
|
} else if (c == '!') { /* command */ |
150 |
|
|
ungetc(c, fin); |
151 |
|
|
cvcomm(name, fin); |
152 |
|
|
} else { /* object */ |
153 |
|
|
ungetc(c, fin); |
154 |
|
|
cvobject(name, fin); |
155 |
|
|
} |
156 |
|
|
} |
157 |
|
|
} |
158 |
|
|
|
159 |
|
|
|
160 |
schorsch |
2.9 |
void |
161 |
|
|
cvcomm( /* convert a command */ |
162 |
|
|
char *fname, |
163 |
|
|
FILE *fin |
164 |
|
|
) |
165 |
greg |
1.1 |
{ |
166 |
schorsch |
2.8 |
FILE *pin; |
167 |
greg |
1.1 |
char buf[512], *fgetline(); |
168 |
|
|
|
169 |
|
|
fgetline(buf, sizeof(buf), fin); |
170 |
|
|
if (expand) { |
171 |
|
|
if ((pin = popen(buf+1, "r")) == NULL) { |
172 |
|
|
fprintf(stderr, |
173 |
|
|
"%s: (%s): cannot execute \"%s\"\n", |
174 |
|
|
progname, fname, buf); |
175 |
|
|
exit(1); |
176 |
|
|
} |
177 |
|
|
convert(buf, pin); |
178 |
|
|
pclose(pin); |
179 |
|
|
} else |
180 |
|
|
printf("\n%s\n", buf); |
181 |
|
|
} |
182 |
|
|
|
183 |
|
|
|
184 |
schorsch |
2.9 |
void |
185 |
|
|
cvobject( /* convert an object */ |
186 |
|
|
char *fname, |
187 |
|
|
FILE *fin |
188 |
|
|
) |
189 |
greg |
1.1 |
{ |
190 |
greg |
2.6 |
extern char *fgetword(); |
191 |
greg |
1.1 |
char buf[128], typ[16], nam[128]; |
192 |
greg |
2.2 |
int i, n; |
193 |
|
|
register int j; |
194 |
greg |
1.1 |
|
195 |
|
|
if (fscanf(fin, "%s %s %s", buf, typ, nam) != 3) |
196 |
|
|
goto readerr; |
197 |
greg |
2.2 |
if (!strcmp(typ, "polygon")) |
198 |
|
|
for (j = 0; j < nmarkers; j++) |
199 |
|
|
if (!strcmp(buf, marker[j].modin)) { |
200 |
|
|
replace(fname, &marker[j], nam, fin); |
201 |
|
|
return; |
202 |
|
|
} |
203 |
greg |
1.1 |
printf("\n%s %s %s\n", buf, typ, nam); |
204 |
|
|
if (!strcmp(typ, "alias")) { /* alias special case */ |
205 |
|
|
if (fscanf(fin, "%s", buf) != 1) |
206 |
|
|
goto readerr; |
207 |
|
|
printf("\t%s\n", buf); |
208 |
|
|
return; |
209 |
|
|
} |
210 |
|
|
for (i = 0; i < 3; i++) { /* pass along arguments */ |
211 |
|
|
if (fscanf(fin, "%d", &n) != 1) |
212 |
|
|
goto readerr; |
213 |
|
|
printf("%d", n); |
214 |
|
|
for (j = 0; j < n; j++) { |
215 |
greg |
2.5 |
if (fgetword(buf, sizeof(buf), fin) == NULL) |
216 |
greg |
1.1 |
goto readerr; |
217 |
|
|
if (j%3 == 0) |
218 |
|
|
putchar('\n'); |
219 |
greg |
2.5 |
putchar('\t'); |
220 |
|
|
fputword(buf, stdout); |
221 |
greg |
1.1 |
} |
222 |
|
|
putchar('\n'); |
223 |
|
|
} |
224 |
|
|
return; |
225 |
|
|
readerr: |
226 |
|
|
fprintf(stderr, "%s: (%s): read error for %s \"%s\"\n", |
227 |
|
|
progname, fname, typ, nam); |
228 |
|
|
} |
229 |
|
|
|
230 |
|
|
|
231 |
schorsch |
2.9 |
void |
232 |
|
|
replace( /* replace marker */ |
233 |
|
|
char *fname, |
234 |
|
|
register struct mrkr *m, |
235 |
|
|
char *mark, |
236 |
|
|
FILE *fin |
237 |
|
|
) |
238 |
greg |
1.1 |
{ |
239 |
|
|
int n; |
240 |
|
|
char buf[256]; |
241 |
|
|
|
242 |
greg |
2.5 |
buf[0] = '\0'; /* bug fix thanks to schorsch */ |
243 |
greg |
2.2 |
if (m->doxform) { |
244 |
greg |
1.1 |
sprintf(buf, "xform -e -n %s", mark); |
245 |
greg |
2.2 |
if (m->modout != NULL) |
246 |
|
|
sprintf(buf+strlen(buf), " -m %s", m->modout); |
247 |
|
|
if (buildxf(buf+strlen(buf), m->mscale, fin) < 0) |
248 |
greg |
1.1 |
goto badxf; |
249 |
greg |
2.2 |
sprintf(buf+strlen(buf), " %s", m->objname); |
250 |
greg |
1.1 |
if (expand) { |
251 |
|
|
fflush(stdout); |
252 |
|
|
system(buf); |
253 |
|
|
} else |
254 |
|
|
printf("\n!%s\n", buf); |
255 |
|
|
} else { |
256 |
greg |
2.2 |
if ((n = buildxf(buf, m->mscale, fin)) < 0) |
257 |
greg |
1.1 |
goto badxf; |
258 |
greg |
2.2 |
printf("\n%s instance %s\n", |
259 |
|
|
m->modout==NULL?"void":m->modout, mark); |
260 |
|
|
printf("%d %s%s\n0\n0\n", n+1, m->objname, buf); |
261 |
greg |
1.1 |
} |
262 |
|
|
return; |
263 |
|
|
badxf: |
264 |
|
|
fprintf(stderr, "%s: (%s): bad arguments for marker \"%s\"\n", |
265 |
|
|
progname, fname, mark); |
266 |
|
|
exit(1); |
267 |
|
|
} |
268 |
|
|
|
269 |
|
|
|
270 |
schorsch |
2.9 |
int |
271 |
|
|
edgecmp( /* compare two edges, descending order */ |
272 |
|
|
const void *e1, |
273 |
|
|
const void *e2 |
274 |
|
|
) |
275 |
greg |
1.1 |
{ |
276 |
schorsch |
2.9 |
if (((EDGE*)e1)->len2 > ((EDGE*)e2)->len2) |
277 |
greg |
1.1 |
return(-1); |
278 |
schorsch |
2.9 |
if (((EDGE*)e1)->len2 < ((EDGE*)e2)->len2) |
279 |
greg |
1.1 |
return(1); |
280 |
|
|
return(0); |
281 |
|
|
} |
282 |
|
|
|
283 |
|
|
|
284 |
|
|
int |
285 |
schorsch |
2.9 |
buildxf( /* build transform for marker */ |
286 |
|
|
register char *xf, |
287 |
|
|
double markscale, |
288 |
|
|
FILE *fin |
289 |
|
|
) |
290 |
greg |
1.1 |
{ |
291 |
|
|
static FVECT vlist[MAXVERT]; |
292 |
|
|
static EDGE elist[MAXVERT]; |
293 |
|
|
FVECT xvec, yvec, zvec; |
294 |
|
|
double xlen; |
295 |
|
|
int n; |
296 |
|
|
register int i; |
297 |
|
|
/* |
298 |
|
|
* Read and sort vectors: longest is hypotenuse, |
299 |
|
|
* second longest is x' axis, |
300 |
|
|
* third longest is y' axis (approximate), |
301 |
|
|
* other vectors are ignored. |
302 |
|
|
* It is an error if the x' and y' axes do |
303 |
|
|
* not share a common vertex (their origin). |
304 |
|
|
*/ |
305 |
|
|
if (fscanf(fin, "%*d %*d %d", &n) != 1) |
306 |
|
|
return(-1); |
307 |
|
|
if (n%3 != 0) |
308 |
|
|
return(-1); |
309 |
|
|
n /= 3; |
310 |
|
|
if (n < 3 || n > MAXVERT) |
311 |
|
|
return(-1); |
312 |
|
|
/* sort edges in descending order */ |
313 |
|
|
for (i = 0; i < n; i++) { |
314 |
|
|
if (fscanf(fin, "%lf %lf %lf", &vlist[i][0], |
315 |
|
|
&vlist[i][1], &vlist[i][2]) != 3) |
316 |
|
|
return(-1); |
317 |
|
|
if (i) { |
318 |
|
|
elist[i].beg = i-1; |
319 |
|
|
elist[i].end = i; |
320 |
|
|
elist[i].len2 = dist2(vlist[i-1],vlist[i]); |
321 |
|
|
} |
322 |
|
|
} |
323 |
|
|
elist[0].beg = n-1; |
324 |
|
|
elist[0].end = 0; |
325 |
|
|
elist[0].len2 = dist2(vlist[n-1],vlist[0]); |
326 |
|
|
qsort(elist, n, sizeof(EDGE), edgecmp); |
327 |
|
|
/* find x' and y' */ |
328 |
|
|
if (elist[1].end == elist[2].beg || elist[1].end == elist[2].end) { |
329 |
|
|
i = elist[1].beg; |
330 |
|
|
elist[1].beg = elist[1].end; |
331 |
|
|
elist[1].end = i; |
332 |
|
|
} |
333 |
|
|
if (elist[2].end == elist[1].beg) { |
334 |
|
|
i = elist[2].beg; |
335 |
|
|
elist[2].beg = elist[2].end; |
336 |
|
|
elist[2].end = i; |
337 |
|
|
} |
338 |
|
|
if (elist[1].beg != elist[2].beg) |
339 |
|
|
return(-1); /* x' and y' not connected! */ |
340 |
|
|
for (i = 0; i < 3; i++) { |
341 |
|
|
xvec[i] = vlist[elist[1].end][i] - vlist[elist[1].beg][i]; |
342 |
|
|
yvec[i] = vlist[elist[2].end][i] - vlist[elist[2].beg][i]; |
343 |
|
|
} |
344 |
|
|
if ((xlen = normalize(xvec)) == 0.0) |
345 |
|
|
return(-1); |
346 |
|
|
fcross(zvec, xvec, yvec); |
347 |
|
|
if (normalize(zvec) == 0.0) |
348 |
|
|
return(-1); |
349 |
|
|
fcross(yvec, zvec, xvec); |
350 |
|
|
n = 0; /* start transformation... */ |
351 |
|
|
if (markscale > 0.0) { /* add scale factor */ |
352 |
|
|
sprintf(xf, " -s %f", xlen*markscale); |
353 |
|
|
n += 2; |
354 |
greg |
2.5 |
while (*xf) ++xf; |
355 |
greg |
1.1 |
} |
356 |
|
|
/* add rotation */ |
357 |
|
|
n += addrot(xf, xvec, yvec, zvec); |
358 |
greg |
2.5 |
while (*xf) ++xf; |
359 |
greg |
1.1 |
/* add translation */ |
360 |
|
|
n += 4; |
361 |
|
|
sprintf(xf, " -t %f %f %f", vlist[elist[1].beg][0], |
362 |
|
|
vlist[elist[1].beg][1], vlist[elist[1].beg][2]); |
363 |
|
|
return(n); /* all done */ |
364 |
|
|
} |
365 |
|
|
|
366 |
|
|
|
367 |
schorsch |
2.9 |
int |
368 |
|
|
addrot( /* compute rotation (x,y,z) => (xp,yp,zp) */ |
369 |
|
|
register char *xf, |
370 |
|
|
FVECT xp, |
371 |
|
|
FVECT yp, |
372 |
|
|
FVECT zp |
373 |
|
|
) |
374 |
greg |
1.1 |
{ |
375 |
greg |
1.2 |
int n; |
376 |
|
|
double theta; |
377 |
greg |
1.1 |
|
378 |
greg |
1.2 |
n = 0; |
379 |
|
|
theta = atan2(yp[2], zp[2]); |
380 |
|
|
if (!FEQ(theta,0.0)) { |
381 |
|
|
sprintf(xf, " -rx %f", theta*(180./PI)); |
382 |
greg |
2.5 |
while (*xf) ++xf; |
383 |
greg |
1.2 |
n += 2; |
384 |
|
|
} |
385 |
|
|
theta = asin(-xp[2]); |
386 |
|
|
if (!FEQ(theta,0.0)) { |
387 |
|
|
sprintf(xf, " -ry %f", theta*(180./PI)); |
388 |
greg |
2.5 |
while (*xf) ++xf; |
389 |
greg |
1.2 |
n += 2; |
390 |
|
|
} |
391 |
|
|
theta = atan2(xp[1], xp[0]); |
392 |
|
|
if (!FEQ(theta,0.0)) { |
393 |
|
|
sprintf(xf, " -rz %f", theta*(180./PI)); |
394 |
greg |
2.5 |
/* while (*xf) ++xf; */ |
395 |
greg |
1.2 |
n += 2; |
396 |
|
|
} |
397 |
|
|
return(n); |
398 |
greg |
1.1 |
} |