7 |
|
* G.Ward for LBNL |
8 |
|
*/ |
9 |
|
|
10 |
– |
#include <stdio.h> |
10 |
|
#include <stdlib.h> |
11 |
< |
#include <string.h> |
11 |
> |
#include "rtio.h" |
12 |
> |
#include "rtmath.h" |
13 |
> |
#include "random.h" |
14 |
|
#include "eplus_idf.h" |
15 |
|
#include "triangulate.h" |
16 |
+ |
#include "rtprocess.h" |
17 |
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|
18 |
|
#ifndef NSAMPLES |
19 |
< |
#define NSAMPLES 100000 /* number of samples to use */ |
19 |
> |
#define NSAMPLES 80000 /* default number of samples */ |
20 |
|
#endif |
21 |
|
|
22 |
< |
#define UVF_PNAME "ZoneProperty:UserViewFactor:bySurfaceName" |
22 |
> |
#define SURF_EPS 0.0005 /* surface testing epsilon */ |
23 |
|
|
24 |
+ |
char *progname; /* global argv[0] */ |
25 |
+ |
|
26 |
+ |
int nsamps = NSAMPLES; /* number of samples to use */ |
27 |
+ |
|
28 |
+ |
char temp_octree[128]; /* temporary octree */ |
29 |
+ |
|
30 |
+ |
const char UVF_PNAME[] = |
31 |
+ |
"ZoneProperty:UserViewFactors:bySurfaceName"; |
32 |
+ |
|
33 |
+ |
const char SUBSURF_PNAME[] = |
34 |
+ |
"FenestrationSurface:Detailed"; |
35 |
+ |
|
36 |
|
const char ADD_HEADER[] = |
37 |
< |
"!+++ User View Factors computed by Radiance +++!\n"; |
37 |
> |
"\n!+++ User View Factors computed by Radiance +++!\n\n"; |
38 |
|
|
39 |
|
#define NAME_FLD 1 /* name field always first? */ |
40 |
|
|
41 |
+ |
#define SS_BASE_FLD 4 /* subsurface base surface */ |
42 |
+ |
#define SS_VERT_FLD 10 /* subsurface vertex count */ |
43 |
+ |
|
44 |
|
typedef struct { |
45 |
< |
const char *pname; /* parameter type name */ |
45 |
> |
const char *pname; /* object type name */ |
46 |
|
short zone_fld; /* zone field index */ |
47 |
|
short vert_fld; /* vertex field index */ |
48 |
|
} SURF_PTYPE; /* surface type we're interested in */ |
49 |
|
|
50 |
|
const SURF_PTYPE surf_type[] = { |
51 |
|
{"BuildingSurface:Detailed", 4, 10}, |
52 |
+ |
{"Floor:Detailed", 3, 9}, |
53 |
+ |
{"RoofCeiling:Detailed", 3, 9}, |
54 |
+ |
{"Wall:Detailed", 3, 9}, |
55 |
|
{NULL} |
56 |
< |
}; |
56 |
> |
}; /* IDF surface types */ |
57 |
|
|
58 |
< |
struct s_zone { |
58 |
> |
typedef struct s_zone { |
59 |
|
const char *zname; /* zone name */ |
60 |
|
struct s_zone *next; /* next zone in list */ |
61 |
< |
IDF_PARAMETER *pfirst; /* first matching parameter */ |
62 |
< |
IDF_PARAMETER *plast; /* last matching parameter */ |
63 |
< |
} *zone_list = NULL; |
61 |
> |
int nsurf; /* surface count */ |
62 |
> |
int ntotal; /* surfaces+subsurfaces */ |
63 |
> |
IDF_OBJECT *pfirst; /* first matching object */ |
64 |
> |
IDF_OBJECT *plast; /* last before subsurfaces */ |
65 |
> |
} ZONE; /* a list of collected zone surfaces */ |
66 |
|
|
67 |
+ |
ZONE *zone_list = NULL; /* our list of zones */ |
68 |
+ |
|
69 |
+ |
LUTAB zonesurf_lut = /* zone surface lookup table */ |
70 |
+ |
LU_SINIT(NULL,NULL); |
71 |
+ |
|
72 |
|
IDF_LOADED *our_idf = NULL; /* loaded/modified IDF */ |
73 |
|
|
74 |
+ |
typedef struct { |
75 |
+ |
FVECT norm; /* surface normal */ |
76 |
+ |
double area; /* surface area */ |
77 |
+ |
int nv; /* number of vertices */ |
78 |
+ |
FVECT vl[3]; /* vertex list (extends struct) */ |
79 |
+ |
} SURFACE; /* a polygonal surface */ |
80 |
+ |
|
81 |
+ |
typedef struct { |
82 |
+ |
FVECT sdir[3]; /* UVW unit sampling vectors */ |
83 |
+ |
double poff; /* W-offset for plane of polygon */ |
84 |
+ |
double area_left; /* area left to sample */ |
85 |
+ |
int samp_left; /* remaining samples */ |
86 |
+ |
int wd; /* output file descriptor */ |
87 |
+ |
} POLYSAMP; /* structure for polygon sampling */ |
88 |
+ |
|
89 |
|
/* Create a new zone and push to top of our list */ |
90 |
< |
static struct s_zone * |
91 |
< |
new_zone(const char *zname, IDF_PARAMETER *param) |
90 |
> |
static ZONE * |
91 |
> |
new_zone(const char *zname, IDF_OBJECT *param) |
92 |
|
{ |
93 |
< |
struct s_zone *znew = (struct s_zone *)malloc(sizeof(struct s_zone)); |
93 |
> |
ZONE *znew = (ZONE *)malloc(sizeof(ZONE)); |
94 |
|
|
95 |
|
if (znew == NULL) |
96 |
|
return(NULL); |
97 |
|
znew->zname = zname; /* assumes static */ |
98 |
|
znew->next = zone_list; |
99 |
|
znew->pfirst = znew->plast = param; |
100 |
+ |
znew->ntotal = znew->nsurf = 1; |
101 |
|
return(zone_list = znew); |
102 |
|
} |
103 |
|
|
104 |
|
/* Add the detailed surface (polygon) to the named zone */ |
105 |
< |
static struct s_zone * |
106 |
< |
add2zone(IDF_PARAMETER *param, const char *zname) |
105 |
> |
static ZONE * |
106 |
> |
add2zone(IDF_OBJECT *param, const char *zname) |
107 |
|
{ |
108 |
< |
struct s_zone *zptr; |
108 |
> |
IDF_FIELD *nfp = idf_getfield(param, NAME_FLD); |
109 |
> |
ZONE *zptr; |
110 |
> |
LUENT *lep; |
111 |
|
|
112 |
+ |
if (nfp == NULL) { |
113 |
+ |
fputs(progname, stderr); |
114 |
+ |
fputs(": surface missing name field!\n", stderr); |
115 |
+ |
return(NULL); |
116 |
+ |
} |
117 |
|
for (zptr = zone_list; zptr != NULL; zptr = zptr->next) |
118 |
|
if (!strcmp(zptr->zname, zname)) |
119 |
|
break; |
120 |
< |
if (zptr == NULL) |
121 |
< |
return(new_zone(zname, param)); |
122 |
< |
/* keep surfaces together */ |
123 |
< |
if (!idf_movparam(our_idf, param, zptr->plast)) |
120 |
> |
if (zptr == NULL) { |
121 |
> |
zptr = new_zone(zname, param); |
122 |
> |
} else { /* keep surfaces together */ |
123 |
> |
if (!idf_movobject(our_idf, param, zptr->plast)) |
124 |
> |
return(NULL); |
125 |
> |
zptr->plast = param; |
126 |
> |
zptr->nsurf++; |
127 |
> |
zptr->ntotal++; |
128 |
> |
} |
129 |
> |
/* add to lookup table */ |
130 |
> |
lep = lu_find(&zonesurf_lut, nfp->val); |
131 |
> |
if (lep == NULL) |
132 |
|
return(NULL); |
133 |
< |
zptr->plast = param; |
133 |
> |
if (lep->data != NULL) { |
134 |
> |
fputs(progname, stderr); |
135 |
> |
fputs(": duplicate surface name '", stderr); |
136 |
> |
fputs(nfp->val, stderr); |
137 |
> |
fputs("'\n", stderr); |
138 |
> |
return(NULL); |
139 |
> |
} |
140 |
> |
lep->key = nfp->val; |
141 |
> |
lep->data = (char *)zptr; |
142 |
|
return(zptr); |
143 |
|
} |
144 |
|
|
145 |
+ |
/* Add a subsurface by finding its base surface and the corresponding zone */ |
146 |
+ |
static ZONE * |
147 |
+ |
add_subsurf(IDF_OBJECT *param) |
148 |
+ |
{ |
149 |
+ |
IDF_FIELD *bfp = idf_getfield(param, SS_BASE_FLD); |
150 |
+ |
ZONE *zptr; |
151 |
+ |
LUENT *lep; |
152 |
+ |
|
153 |
+ |
if (bfp == NULL) { |
154 |
+ |
fputs(progname, stderr); |
155 |
+ |
fputs(": missing base field name in subsurface!\n", stderr); |
156 |
+ |
return(NULL); |
157 |
+ |
} |
158 |
+ |
lep = lu_find(&zonesurf_lut, bfp->val); /* find base zone */ |
159 |
+ |
if (lep == NULL || lep->data == NULL) { |
160 |
+ |
fputs(progname, stderr); |
161 |
+ |
fputs(": cannot find referenced base surface '", stderr); |
162 |
+ |
fputs(bfp->val, stderr); |
163 |
+ |
fputs("'\n", stderr); |
164 |
+ |
return(NULL); |
165 |
+ |
} |
166 |
+ |
zptr = (ZONE *)lep->data; /* add this subsurface */ |
167 |
+ |
if (!idf_movobject(our_idf, param, zptr->plast)) |
168 |
+ |
return(NULL); |
169 |
+ |
zptr->ntotal++; |
170 |
+ |
return(zptr); |
171 |
+ |
} |
172 |
+ |
|
173 |
+ |
/* Return field for vertices in the given object */ |
174 |
+ |
static IDF_FIELD * |
175 |
+ |
get_vlist(IDF_OBJECT *param, const char *zname) |
176 |
+ |
{ |
177 |
+ |
int i = 0; |
178 |
+ |
/* check if subsurface */ |
179 |
+ |
if (!strcmp(param->pname, SUBSURF_PNAME)) { |
180 |
+ |
if (zname != NULL) { |
181 |
+ |
LUENT *lep = lu_find(&zonesurf_lut, |
182 |
+ |
idf_getfield(param,SS_BASE_FLD)->val); |
183 |
+ |
if (strcmp((*(ZONE *)lep->data).zname, zname)) |
184 |
+ |
return(NULL); |
185 |
+ |
} |
186 |
+ |
return(idf_getfield(param, SS_VERT_FLD)); |
187 |
+ |
} |
188 |
+ |
/* check for surface type */ |
189 |
+ |
while (strcmp(surf_type[i].pname, param->pname)) |
190 |
+ |
if (surf_type[++i].pname == NULL) |
191 |
+ |
return(NULL); |
192 |
+ |
|
193 |
+ |
if (zname != NULL) { /* matches specified zone? */ |
194 |
+ |
IDF_FIELD *fptr = idf_getfield(param, surf_type[i].zone_fld); |
195 |
+ |
if (fptr == NULL || strcmp(fptr->val, zname)) |
196 |
+ |
return(NULL); |
197 |
+ |
} |
198 |
+ |
/* return field for #verts */ |
199 |
+ |
return(idf_getfield(param, surf_type[i].vert_fld)); |
200 |
+ |
} |
201 |
+ |
|
202 |
+ |
/* Get/allocate surface polygon */ |
203 |
+ |
static SURFACE * |
204 |
+ |
get_surface(IDF_FIELD *fptr) |
205 |
+ |
{ |
206 |
+ |
SURFACE *surf; |
207 |
+ |
int nv; |
208 |
+ |
FVECT e1, e2, vc; |
209 |
+ |
int i, j; |
210 |
+ |
/* get number of vertices */ |
211 |
+ |
if (fptr == NULL || (nv = atoi(fptr->val)) < 3) { |
212 |
+ |
fputs(progname, stderr); |
213 |
+ |
fputs(": bad vertex count for surface!\n", stderr); |
214 |
+ |
return(NULL); |
215 |
+ |
} |
216 |
+ |
surf = (SURFACE *)malloc(sizeof(SURFACE)+sizeof(FVECT)*(nv-3)); |
217 |
+ |
if (surf == NULL) |
218 |
+ |
return(NULL); |
219 |
+ |
surf->nv = nv; |
220 |
+ |
for (i = nv; i--; ) /* reverse vertex order/orientation */ |
221 |
+ |
for (j = 0; j < 3; j++) { |
222 |
+ |
fptr = fptr->next; |
223 |
+ |
if (fptr == NULL) { |
224 |
+ |
fputs(progname, stderr); |
225 |
+ |
fputs(": missing vertex in get_surface()\n", stderr); |
226 |
+ |
free(surf); |
227 |
+ |
return(NULL); |
228 |
+ |
} |
229 |
+ |
if ((surf->vl[i][j] = atof(fptr->val)) == 0 && |
230 |
+ |
!isflt(fptr->val)) { |
231 |
+ |
fputs(progname, stderr); |
232 |
+ |
fputs(": bad vertex in get_surface()\n", stderr); |
233 |
+ |
free(surf); |
234 |
+ |
return(NULL); |
235 |
+ |
} |
236 |
+ |
} |
237 |
+ |
/* compute area and normal */ |
238 |
+ |
surf->norm[0] = surf->norm[1] = surf->norm[2] = 0; |
239 |
+ |
VSUB(e1, surf->vl[1], surf->vl[0]); |
240 |
+ |
for (i = 2; i < nv; i++) { |
241 |
+ |
VSUB(e2, surf->vl[i], surf->vl[0]); |
242 |
+ |
fcross(vc, e1, e2); |
243 |
+ |
surf->norm[0] += vc[0]; |
244 |
+ |
surf->norm[1] += vc[1]; |
245 |
+ |
surf->norm[2] += vc[2]; |
246 |
+ |
VCOPY(e1, e2); |
247 |
+ |
} |
248 |
+ |
surf->area = .5 * normalize(surf->norm); |
249 |
+ |
if (surf->area == 0) { |
250 |
+ |
fputs(progname, stderr); |
251 |
+ |
fputs(": degenerate polygon in get_surface()\n", stderr); |
252 |
+ |
free(surf); |
253 |
+ |
return(NULL); |
254 |
+ |
} |
255 |
+ |
return(surf); |
256 |
+ |
} |
257 |
+ |
|
258 |
+ |
/* Convert surface to Radiance with modifier based on unique name */ |
259 |
+ |
static int |
260 |
+ |
rad_surface(IDF_OBJECT *param, FILE *ofp) |
261 |
+ |
{ |
262 |
+ |
const char *sname = idf_getfield(param,NAME_FLD)->val; |
263 |
+ |
IDF_FIELD *fptr = get_vlist(param, NULL); |
264 |
+ |
const char **fargs; |
265 |
+ |
int nvert, i, j; |
266 |
+ |
|
267 |
+ |
if (fptr == NULL || (nvert = atoi(fptr->val)) < 3) { |
268 |
+ |
fprintf(stderr, "%s: bad surface '%s'\n", progname, sname); |
269 |
+ |
return(0); |
270 |
+ |
} |
271 |
+ |
fargs = (const char **)malloc(sizeof(const char *)*3*nvert); |
272 |
+ |
if (fargs == NULL) |
273 |
+ |
return(0); |
274 |
+ |
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
275 |
+ |
fprintf(ofp, "\n'%s' polygon 's_%s'\n0\n0\n%d\n", sname, sname, 3*nvert); |
276 |
+ |
for (j = nvert; j--; ) { /* get arguments in reverse */ |
277 |
+ |
for (i = 0; i < 3; i++) { |
278 |
+ |
fptr = fptr->next; |
279 |
+ |
if (fptr == NULL || !isflt(fptr->val)) { |
280 |
+ |
fprintf(stderr, |
281 |
+ |
"%s: missing/bad vertex for %s '%s'\n", |
282 |
+ |
progname, param->pname, sname); |
283 |
+ |
return(0); |
284 |
+ |
} |
285 |
+ |
fargs[3*j + i] = fptr->val; |
286 |
+ |
} |
287 |
+ |
} |
288 |
+ |
for (j = 0; j < nvert; j++) { /* output reversed verts */ |
289 |
+ |
for (i = 0; i < 3; i++) { |
290 |
+ |
fputc('\t', ofp); |
291 |
+ |
fputs(fargs[3*j + i], ofp); |
292 |
+ |
} |
293 |
+ |
fputc('\n', ofp); |
294 |
+ |
} |
295 |
+ |
free(fargs); |
296 |
+ |
return(!ferror(ofp)); |
297 |
+ |
} |
298 |
+ |
|
299 |
+ |
/* Convert subsurface to Radiance with modifier based on unique name */ |
300 |
+ |
static int |
301 |
+ |
rad_subsurface(IDF_OBJECT *param, FILE *ofp) |
302 |
+ |
{ |
303 |
+ |
const char *sname = idf_getfield(param,NAME_FLD)->val; |
304 |
+ |
SURFACE *surf = get_surface(idf_getfield(param,SS_VERT_FLD)); |
305 |
+ |
int i; |
306 |
+ |
|
307 |
+ |
if (surf == NULL) { |
308 |
+ |
fprintf(stderr, "%s: bad subsurface '%s'\n", progname, sname); |
309 |
+ |
return(0); |
310 |
+ |
} |
311 |
+ |
fprintf(ofp, "\nvoid glow '%s'\n0\n0\n4 1 1 1 0\n", sname); |
312 |
+ |
fprintf(ofp, "\n'%s' polygon 'ss_%s'\n0\n0\n%d\n", |
313 |
+ |
sname, sname, 3*surf->nv); |
314 |
+ |
for (i = 0; i < surf->nv; i++) { /* offset vertices */ |
315 |
+ |
FVECT vert; |
316 |
+ |
VSUM(vert, surf->vl[i], surf->norm, 2.*SURF_EPS); |
317 |
+ |
fprintf(ofp, "\t%.12f %.12f %.12f\n", vert[0], vert[1], vert[2]); |
318 |
+ |
} |
319 |
+ |
free(surf); |
320 |
+ |
return(!ferror(ofp)); |
321 |
+ |
} |
322 |
+ |
|
323 |
+ |
/* Start rcontrib process */ |
324 |
+ |
static int |
325 |
+ |
start_rcontrib(SUBPROC *pd, ZONE *zp) |
326 |
+ |
{ |
327 |
+ |
#define BASE_AC 6 |
328 |
+ |
static char *base_av[BASE_AC] = { |
329 |
+ |
"rcontrib", "-V+", "-fff", "-h", "-x", "1" |
330 |
+ |
}; |
331 |
+ |
char cbuf[300]; |
332 |
+ |
char **av; |
333 |
+ |
FILE *ofp; |
334 |
+ |
IDF_OBJECT *pptr; |
335 |
+ |
IDF_FIELD *fptr; |
336 |
+ |
int i, n; |
337 |
+ |
/* start oconv command */ |
338 |
+ |
sprintf(cbuf, "oconv - > '%s'", temp_octree); |
339 |
+ |
if ((ofp = popen(cbuf, "w")) == NULL) { |
340 |
+ |
fputs(progname, stderr); |
341 |
+ |
fputs(": cannot open oconv process\n", stderr); |
342 |
+ |
return(0); |
343 |
+ |
} |
344 |
+ |
/* allocate argument list */ |
345 |
+ |
av = (char **)malloc(sizeof(char *)*(BASE_AC+4+2*(zp->ntotal))); |
346 |
+ |
if (av == NULL) |
347 |
+ |
return(0); |
348 |
+ |
for (i = 0; i < BASE_AC; i++) |
349 |
+ |
av[i] = base_av[i]; |
350 |
+ |
sprintf(cbuf, "%d", nsamps); |
351 |
+ |
av[i++] = "-c"; |
352 |
+ |
av[i++] = cbuf; /* add modifiers & surfaces */ |
353 |
+ |
for (n = 0, pptr = zp->pfirst; n < zp->nsurf; n++, pptr = pptr->dnext) { |
354 |
+ |
fptr = idf_getfield(pptr,NAME_FLD); |
355 |
+ |
if (fptr == NULL || !fptr->val[0]) { |
356 |
+ |
fputs(progname, stderr); |
357 |
+ |
fputs(": missing name for surface object\n", stderr); |
358 |
+ |
return(0); |
359 |
+ |
} |
360 |
+ |
if (!rad_surface(pptr, ofp)) /* add surface to octree */ |
361 |
+ |
return(0); |
362 |
+ |
av[i++] = "-m"; |
363 |
+ |
av[i++] = fptr->val; |
364 |
+ |
} |
365 |
+ |
/* now subsurfaces */ |
366 |
+ |
for ( ; n < zp->ntotal; n++, pptr = pptr->dnext) { |
367 |
+ |
fptr = idf_getfield(pptr,NAME_FLD); |
368 |
+ |
if (fptr == NULL || !fptr->val[0]) { |
369 |
+ |
fputs(progname, stderr); |
370 |
+ |
fputs(": missing name for subsurface object\n", stderr); |
371 |
+ |
return(0); |
372 |
+ |
} |
373 |
+ |
if (!rad_subsurface(pptr, ofp)) /* add surface to octree */ |
374 |
+ |
return(0); |
375 |
+ |
av[i++] = "-m"; |
376 |
+ |
av[i++] = fptr->val; |
377 |
+ |
} |
378 |
+ |
if (pclose(ofp) != 0) { /* finish oconv */ |
379 |
+ |
fputs(progname, stderr); |
380 |
+ |
fputs(": error running oconv process\n", stderr); |
381 |
+ |
return(0); |
382 |
+ |
} |
383 |
+ |
av[i++] = temp_octree; /* add final octree argument */ |
384 |
+ |
av[i] = NULL; |
385 |
+ |
if (open_process(pd, av) <= 0) { /* start process */ |
386 |
+ |
fputs(progname, stderr); |
387 |
+ |
fputs(": cannot start rcontrib process\n", stderr); |
388 |
+ |
return(0); |
389 |
+ |
} |
390 |
+ |
free(av); /* all done -- clean up */ |
391 |
+ |
return(1); |
392 |
+ |
#undef BASE_AC |
393 |
+ |
} |
394 |
+ |
|
395 |
+ |
/* Initialize polygon sampling */ |
396 |
+ |
static Vert2_list * |
397 |
+ |
init_poly(POLYSAMP *ps, IDF_FIELD *f0) |
398 |
+ |
{ |
399 |
+ |
SURFACE *surf; |
400 |
+ |
Vert2_list *vl2; |
401 |
+ |
int i; |
402 |
+ |
/* get 3-D polygon vertices */ |
403 |
+ |
if ((surf = get_surface(f0)) == NULL) |
404 |
+ |
return(NULL); |
405 |
+ |
vl2 = polyAlloc(surf->nv); |
406 |
+ |
if (vl2 == NULL) |
407 |
+ |
return(NULL); |
408 |
+ |
/* create X & Y axes */ |
409 |
+ |
VCOPY(ps->sdir[2], surf->norm); |
410 |
+ |
VSUB(ps->sdir[0], surf->vl[1], surf->vl[0]); |
411 |
+ |
if (normalize(ps->sdir[0]) == 0) |
412 |
+ |
return(NULL); |
413 |
+ |
fcross(ps->sdir[1], ps->sdir[2], ps->sdir[0]); |
414 |
+ |
/* compute plane offset */ |
415 |
+ |
ps->poff = DOT(surf->vl[0], ps->sdir[2]); |
416 |
+ |
/* assign 2-D vertices */ |
417 |
+ |
for (i = 0; i < surf->nv; i++) { |
418 |
+ |
vl2->v[i].mX = DOT(surf->vl[i], ps->sdir[0]); |
419 |
+ |
vl2->v[i].mY = DOT(surf->vl[i], ps->sdir[1]); |
420 |
+ |
} |
421 |
+ |
ps->area_left = surf->area; |
422 |
+ |
free(surf); /* it's ready! */ |
423 |
+ |
vl2->p = (void *)ps; |
424 |
+ |
return(vl2); |
425 |
+ |
} |
426 |
+ |
|
427 |
+ |
/* Generate samples on 2-D triangle */ |
428 |
+ |
static int |
429 |
+ |
sample_triangle(const Vert2_list *vl2, int a, int b, int c) |
430 |
+ |
{ |
431 |
+ |
POLYSAMP *ps = (POLYSAMP *)vl2->p; |
432 |
+ |
float *samp; |
433 |
+ |
FVECT orig; |
434 |
+ |
FVECT ab, ac; |
435 |
+ |
double area; |
436 |
+ |
int i, j, ns; |
437 |
+ |
/* compute sampling axes */ |
438 |
+ |
for (i = 3; i--; ) { |
439 |
+ |
orig[i] = vl2->v[a].mX*ps->sdir[0][i] + |
440 |
+ |
vl2->v[a].mY*ps->sdir[1][i] + |
441 |
+ |
(ps->poff+SURF_EPS)*ps->sdir[2][i]; |
442 |
+ |
ab[i] = (vl2->v[b].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
443 |
+ |
(vl2->v[b].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
444 |
+ |
ac[i] = (vl2->v[c].mX - vl2->v[a].mX)*ps->sdir[0][i] + |
445 |
+ |
(vl2->v[c].mY - vl2->v[a].mY)*ps->sdir[1][i]; |
446 |
+ |
} |
447 |
+ |
/* compute number of samples to take */ |
448 |
+ |
area = .5*(vl2->v[a].mX*vl2->v[b].mY - vl2->v[b].mX*vl2->v[a].mY + |
449 |
+ |
vl2->v[b].mX*vl2->v[c].mY - vl2->v[c].mX*vl2->v[b].mY + |
450 |
+ |
vl2->v[c].mX*vl2->v[a].mY - vl2->v[a].mX*vl2->v[c].mY); |
451 |
+ |
if (area < .0) { |
452 |
+ |
fputs(progname, stderr); |
453 |
+ |
fputs(": negative triangle area in sample_triangle()\n", stderr); |
454 |
+ |
return(0); |
455 |
+ |
} |
456 |
+ |
if (area >= ps->area_left) { |
457 |
+ |
ns = ps->samp_left; |
458 |
+ |
ps->area_left = 0; |
459 |
+ |
} else { |
460 |
+ |
ns = (ps->samp_left*area/ps->area_left + .5); |
461 |
+ |
ps->samp_left -= ns; |
462 |
+ |
ps->area_left -= area; |
463 |
+ |
} |
464 |
+ |
if (ns <= 0) /* XXX should be error? */ |
465 |
+ |
return(1); |
466 |
+ |
/* buffer sample rays */ |
467 |
+ |
samp = (float *)malloc(sizeof(float)*6*ns); |
468 |
+ |
if (samp == NULL) |
469 |
+ |
return(0); |
470 |
+ |
for (i = ns; i--; ) { /* stratified Monte Carlo sampling */ |
471 |
+ |
double sv[4]; |
472 |
+ |
FVECT dv; |
473 |
+ |
multisamp(sv, 4, (i+frandom())/(double)ns); |
474 |
+ |
sv[0] *= sv[1] = sqrt(sv[1]); |
475 |
+ |
sv[1] = 1. - sv[1]; |
476 |
+ |
for (j = 3; j--; ) |
477 |
+ |
samp[i*6 + j] = orig[j] + sv[0]*ab[j] + sv[1]*ac[j]; |
478 |
+ |
sv[2] = sqrt(sv[2]); |
479 |
+ |
sv[3] *= 2.*PI; |
480 |
+ |
dv[0] = tcos(sv[3]) * sv[2]; |
481 |
+ |
dv[1] = tsin(sv[3]) * sv[2]; |
482 |
+ |
dv[2] = sqrt(1. - sv[2]*sv[2]); |
483 |
+ |
for (j = 3; j--; ) |
484 |
+ |
samp[i*6 + 3 + j] = dv[0]*ps->sdir[0][j] + |
485 |
+ |
dv[1]*ps->sdir[1][j] + |
486 |
+ |
dv[2]*ps->sdir[2][j] ; |
487 |
+ |
} |
488 |
+ |
/* send to our process */ |
489 |
+ |
writebuf(ps->wd, (char *)samp, sizeof(float)*6*ns); |
490 |
+ |
free(samp); /* that's it! */ |
491 |
+ |
return(1); |
492 |
+ |
} |
493 |
+ |
|
494 |
+ |
/* Sample the given surface */ |
495 |
+ |
static int |
496 |
+ |
sample_surface(IDF_OBJECT *param, int wd) |
497 |
+ |
{ |
498 |
+ |
POLYSAMP psamp; |
499 |
+ |
int nv; |
500 |
+ |
Vert2_list *vlist2; |
501 |
+ |
/* set up our polygon sampler */ |
502 |
+ |
if ((vlist2 = init_poly(&psamp, get_vlist(param, NULL))) == NULL) { |
503 |
+ |
fprintf(stderr, "%s: bad polygon %s '%s'\n", |
504 |
+ |
progname, param->pname, |
505 |
+ |
idf_getfield(param,NAME_FLD)->val); |
506 |
+ |
return(0); |
507 |
+ |
} |
508 |
+ |
psamp.samp_left = nsamps; /* assign samples & destination */ |
509 |
+ |
psamp.wd = wd; |
510 |
+ |
/* hack for subsurface sampling */ |
511 |
+ |
psamp.poff += 2.*SURF_EPS * !strcmp(param->pname, SUBSURF_PNAME); |
512 |
+ |
/* sample each subtriangle */ |
513 |
+ |
if (!polyTriangulate(vlist2, &sample_triangle)) |
514 |
+ |
return(0); |
515 |
+ |
polyFree(vlist2); /* clean up and return */ |
516 |
+ |
return(1); |
517 |
+ |
} |
518 |
+ |
|
519 |
+ |
/* Compute User View Factors using open rcontrib process */ |
520 |
+ |
static int |
521 |
+ |
compute_uvfs(SUBPROC *pd, ZONE *zp) |
522 |
+ |
{ |
523 |
+ |
IDF_OBJECT *pptr, *pout, *pptr1; |
524 |
+ |
float *uvfa; |
525 |
+ |
char uvfbuf[24]; |
526 |
+ |
int n, m; |
527 |
+ |
/* create output object */ |
528 |
+ |
pout = idf_newobject(our_idf, UVF_PNAME, |
529 |
+ |
" ! computed by Radiance\n ", our_idf->plast); |
530 |
+ |
if (pout == NULL) { |
531 |
+ |
fputs(progname, stderr); |
532 |
+ |
fputs(": cannot create new IDF object\n", stderr); |
533 |
+ |
return(0); |
534 |
+ |
} |
535 |
+ |
if (!idf_addfield(pout, zp->zname, |
536 |
+ |
" !- Zone Name\n ")) { |
537 |
+ |
fputs(progname, stderr); |
538 |
+ |
fputs(": cannot add zone name field\n", stderr); |
539 |
+ |
return(0); |
540 |
+ |
} |
541 |
+ |
/* allocate read buffer */ |
542 |
+ |
uvfa = (float *)malloc(sizeof(float)*3*zp->ntotal); |
543 |
+ |
if (uvfa == NULL) |
544 |
+ |
return(0); |
545 |
+ |
/* UVFs from each surface */ |
546 |
+ |
for (n = 0, pptr = zp->pfirst; n < zp->ntotal; n++, pptr = pptr->dnext) { |
547 |
+ |
double vfsum = 0; |
548 |
+ |
/* send samples to rcontrib */ |
549 |
+ |
if (!sample_surface(pptr, pd->w)) |
550 |
+ |
return(0); |
551 |
+ |
/* read results */ |
552 |
+ |
if (readbuf(pd->r, (char *)uvfa, sizeof(float)*3*zp->ntotal) != |
553 |
+ |
sizeof(float)*3*zp->ntotal) { |
554 |
+ |
fputs(progname, stderr); |
555 |
+ |
fputs(": read error from rcontrib process\n", stderr); |
556 |
+ |
return(0); |
557 |
+ |
} |
558 |
+ |
/* append UVF fields */ |
559 |
+ |
for (m = 0, pptr1 = zp->pfirst; |
560 |
+ |
m < zp->ntotal; m++, pptr1 = pptr1->dnext) { |
561 |
+ |
vfsum += uvfa[3*m + 1]; |
562 |
+ |
if (pptr1 == pptr && uvfa[3*m + 1] > .001) |
563 |
+ |
fprintf(stderr, |
564 |
+ |
"%s: warning - non-zero self-VF (%.1f%%) for surface '%s'\n", |
565 |
+ |
progname, 100.*uvfa[3*m + 1], |
566 |
+ |
idf_getfield(pptr,NAME_FLD)->val); |
567 |
+ |
sprintf(uvfbuf, "%.4f", uvfa[3*m + 1]); |
568 |
+ |
if (!idf_addfield(pout, |
569 |
+ |
idf_getfield(pptr,NAME_FLD)->val, NULL) || |
570 |
+ |
!idf_addfield(pout, |
571 |
+ |
idf_getfield(pptr1,NAME_FLD)->val, NULL) || |
572 |
+ |
!idf_addfield(pout, uvfbuf, |
573 |
+ |
(n+m < 2*zp->ntotal-2) ? |
574 |
+ |
"\n " : "\n\n")) { |
575 |
+ |
fputs(progname, stderr); |
576 |
+ |
fputs(": error adding UVF fields\n", stderr); |
577 |
+ |
return(0); |
578 |
+ |
} |
579 |
+ |
} |
580 |
+ |
if (vfsum < 0.95) |
581 |
+ |
fprintf(stderr, |
582 |
+ |
"%s: warning - missing %.1f%% of energy from surface '%s'\n", |
583 |
+ |
progname, 100.*(1.-vfsum), |
584 |
+ |
idf_getfield(pptr,NAME_FLD)->val); |
585 |
+ |
} |
586 |
+ |
free(uvfa); /* clean up and return */ |
587 |
+ |
return(1); |
588 |
+ |
} |
589 |
+ |
|
590 |
|
/* Compute zone User View Factors */ |
591 |
|
static int |
592 |
|
compute_zones(void) |
593 |
|
{ |
594 |
< |
fputs("compute_zones() unimplemented\n", stderr); |
595 |
< |
return(0); |
594 |
> |
ZONE *zptr; |
595 |
> |
/* temporary octree name */ |
596 |
> |
mktemp(strcpy(temp_octree, TEMPLATE)); |
597 |
> |
/* compute each zone */ |
598 |
> |
for (zptr = zone_list; zptr != NULL; zptr = zptr->next) { |
599 |
> |
SUBPROC rcproc; |
600 |
> |
/* start rcontrib process */ |
601 |
> |
if (!start_rcontrib(&rcproc, zptr)) |
602 |
> |
return(0); |
603 |
> |
/* compute+add view factors */ |
604 |
> |
if (!compute_uvfs(&rcproc, zptr)) |
605 |
> |
return(0); |
606 |
> |
if (close_process(&rcproc) != 0) { |
607 |
> |
fputs(progname, stderr); |
608 |
> |
fputs(": bad return status from rcontrib\n", stderr); |
609 |
> |
return(0); |
610 |
> |
} |
611 |
> |
} |
612 |
> |
unlink(temp_octree); /* remove octree file */ |
613 |
> |
return(1); |
614 |
|
} |
615 |
|
|
616 |
|
/* Load IDF and compute User View Factors */ |
617 |
|
int |
618 |
|
main(int argc, char *argv[]) |
619 |
|
{ |
620 |
+ |
int incl_comments = 1; |
621 |
|
char *origIDF, *revIDF; |
622 |
< |
IDF_PARAMETER *pptr; |
622 |
> |
IDF_OBJECT *pptr; |
623 |
|
int i; |
624 |
|
|
625 |
< |
if ((argc < 2) | (argc > 3)) { |
626 |
< |
fputs("Usage: ", stderr); |
627 |
< |
fputs(argv[0], stderr); |
628 |
< |
fputs(" Model.idf [Revised.idf]\n", stderr); |
629 |
< |
return(1); |
630 |
< |
} |
631 |
< |
origIDF = argv[1]; |
632 |
< |
revIDF = (argc == 2) ? argv[1] : argv[2]; |
625 |
> |
progname = *argv++; argc--; /* get options if any */ |
626 |
> |
while (argc > 1 && argv[0][0] == '-') |
627 |
> |
switch (argv[0][1]) { |
628 |
> |
case 'c': /* elide comments */ |
629 |
> |
incl_comments = -1; /* header only */ |
630 |
> |
argv++; argc--; |
631 |
> |
continue; |
632 |
> |
case 's': /* samples */ |
633 |
> |
nsamps = 1000*atoi(*++argv); |
634 |
> |
argv++; argc -= 2; |
635 |
> |
continue; |
636 |
> |
default: |
637 |
> |
fputs(progname, stderr); |
638 |
> |
fputs(": unknown option '", stderr); |
639 |
> |
fputs(argv[0], stderr); |
640 |
> |
fputs("'\n", stderr); |
641 |
> |
goto userr; |
642 |
> |
} |
643 |
> |
if ((argc < 1) | (argc > 2)) |
644 |
> |
goto userr; |
645 |
> |
origIDF = argv[0]; |
646 |
> |
revIDF = (argc == 1) ? argv[0] : argv[1]; |
647 |
|
/* load Input Data File */ |
648 |
|
our_idf = idf_load(origIDF); |
649 |
|
if (our_idf == NULL) { |
650 |
< |
fputs(argv[0], stderr); |
650 |
> |
fputs(progname, stderr); |
651 |
|
fputs(": cannot load IDF '", stderr); |
652 |
|
fputs(origIDF, stderr); |
653 |
|
fputs("'\n", stderr); |
654 |
|
return(1); |
655 |
|
} |
656 |
|
/* remove existing UVFs */ |
657 |
< |
if ((pptr = idf_getparam(our_idf, UVF_PNAME)) != NULL) { |
658 |
< |
IDF_PARAMETER *pnext; |
659 |
< |
fputs(argv[0], stderr); |
657 |
> |
if ((pptr = idf_getobject(our_idf, UVF_PNAME)) != NULL) { |
658 |
> |
IDF_OBJECT *pnext; |
659 |
> |
fputs(progname, stderr); |
660 |
|
fputs(": removing previous User View Factors\n", stderr); |
661 |
|
do { |
662 |
|
pnext = pptr->pnext; |
663 |
< |
idf_delparam(our_idf, pptr); |
663 |
> |
idf_delobject(our_idf, pptr); |
664 |
|
} while (pnext != NULL); |
665 |
|
} |
666 |
|
/* add to header */ |
670 |
|
idf_add2hdr(our_idf, ADD_HEADER); |
671 |
|
/* gather zone surfaces */ |
672 |
|
for (i = 0; surf_type[i].pname != NULL; i++) |
673 |
< |
for (pptr = idf_getparam(our_idf, surf_type[i].pname); |
673 |
> |
for (pptr = idf_getobject(our_idf, surf_type[i].pname); |
674 |
|
pptr != NULL; pptr = pptr->pnext) { |
675 |
|
IDF_FIELD *fptr = idf_getfield(pptr, |
676 |
|
surf_type[i].zone_fld); |
677 |
|
if (fptr == NULL) { |
678 |
< |
fputs("Warning: missing zone field!\n", stderr); |
678 |
> |
fputs(progname, stderr); |
679 |
> |
fputs(": warning - missing zone field\n", stderr); |
680 |
|
continue; |
681 |
|
} |
682 |
< |
if (add2zone(pptr, fptr->arg) == NULL) |
682 |
> |
if (add2zone(pptr, fptr->val) == NULL) |
683 |
|
return(1); |
684 |
|
} |
685 |
+ |
/* add subsurfaces */ |
686 |
+ |
for (pptr = idf_getobject(our_idf, SUBSURF_PNAME); |
687 |
+ |
pptr != NULL; pptr = pptr->pnext) |
688 |
+ |
if (add_subsurf(pptr) == NULL) |
689 |
+ |
return(1); |
690 |
|
/* run rcontrib on each zone */ |
691 |
|
if (!compute_zones()) |
692 |
|
return(1); |
693 |
|
/* write out modified IDF */ |
694 |
< |
if (!idf_write(our_idf, revIDF, 1)) { |
695 |
< |
fputs(argv[0], stderr); |
694 |
> |
if (!idf_write(our_idf, revIDF, incl_comments)) { |
695 |
> |
fputs(progname, stderr); |
696 |
|
fputs(": error writing IDF '", stderr); |
697 |
|
fputs(revIDF, stderr); |
698 |
|
fputs("'\n", stderr); |
699 |
|
return(1); |
700 |
|
} |
701 |
|
return(0); /* finito! */ |
702 |
+ |
userr: |
703 |
+ |
fputs("Usage: ", stderr); |
704 |
+ |
fputs(progname, stderr); |
705 |
+ |
fputs(" [-c][-s Ksamps] Model.idf [Revised.idf]\n", stderr); |
706 |
+ |
return(1); |
707 |
|
} |