| 19 |
|
char *rtargv[32] = {"rtrace", "-h", "-ov", "-fff"}; |
| 20 |
|
int rtargc = 4; |
| 21 |
|
|
| 22 |
< |
VIEW ourview; /* our view */ |
| 22 |
> |
VIEW ourview = STDVIEW; /* our view */ |
| 23 |
|
VIEW pictview = STDVIEW; /* picture view */ |
| 24 |
|
VIEW leftview, rightview; /* leftmost and rightmost views */ |
| 25 |
|
|
| 29 |
|
int verbose = 0; /* verbose reporting */ |
| 30 |
|
char *progname; /* global argv[0] */ |
| 31 |
|
|
| 32 |
+ |
double threshold = 0.; /* glare threshold */ |
| 33 |
+ |
|
| 34 |
+ |
int sampdens = SAMPDENS; /* sample density */ |
| 35 |
|
ANGLE glarang[180] = {AEND}; /* glare calculation angles */ |
| 36 |
|
int nglarangs = 0; |
| 37 |
|
double maxtheta; /* maximum angle (in radians) */ |
| 59 |
|
continue; |
| 60 |
|
} |
| 61 |
|
switch (argv[i][1]) { |
| 62 |
+ |
case 't': |
| 63 |
+ |
threshold = atof(argv[++i]); |
| 64 |
+ |
break; |
| 65 |
+ |
case 'r': |
| 66 |
+ |
sampdens = atoi(argv[++i])/2; |
| 67 |
+ |
break; |
| 68 |
|
case 'v': |
| 69 |
|
if (argv[i][2] == '\0') { |
| 70 |
|
verbose++; |
| 173 |
|
exit(1); |
| 174 |
|
} |
| 175 |
|
init(); /* initialize program */ |
| 176 |
< |
comp_thresh(); /* compute glare threshold */ |
| 176 |
> |
if (threshold <= FTINY) |
| 177 |
> |
comp_thresh(); /* compute glare threshold */ |
| 178 |
|
analyze(); /* analyze view */ |
| 179 |
|
cleanup(); /* tidy up */ |
| 180 |
|
/* print header */ |
| 204 |
|
/* set direction vectors */ |
| 205 |
|
for (i = 0; glarang[i] != AEND; i++) |
| 206 |
|
; |
| 207 |
< |
if (i > 0 && glarang[0] <= 0 || glarang[i-1] >= 180) { |
| 207 |
> |
if (i > 0 && (glarang[0] <= 0 || glarang[i-1] >= 180)) { |
| 208 |
|
fprintf(stderr, "%s: glare angles must be between 1 and 179\n", |
| 209 |
|
progname); |
| 210 |
|
exit(1); |
| 211 |
|
} |
| 212 |
|
nglarangs = i; |
| 213 |
|
/* nglardirs = 2*nglarangs + 1; */ |
| 214 |
< |
/* vsize = SAMPDENS; */ |
| 214 |
> |
/* vsize = sampdens - 1; */ |
| 215 |
|
if (nglarangs > 0) |
| 216 |
|
maxtheta = (PI/180.)*glarang[nglarangs-1]; |
| 217 |
|
else |
| 218 |
|
maxtheta = 0.0; |
| 219 |
< |
hlim = SAMPDENS*maxtheta; |
| 220 |
< |
hsize = SAMPDENS + hlim; |
| 221 |
< |
if (hsize > (int)(PI*SAMPDENS)) |
| 222 |
< |
hsize = PI*SAMPDENS; |
| 219 |
> |
hlim = sampdens*maxtheta; |
| 220 |
> |
hsize = hlim + sampdens - 1; |
| 221 |
> |
if (hsize > (int)(PI*sampdens)) |
| 222 |
> |
hsize = PI*sampdens; |
| 223 |
|
indirect = (struct illum *)calloc(nglardirs, sizeof(struct illum)); |
| 224 |
|
if (indirect == NULL) |
| 225 |
|
memerr("indirect illuminances"); |
| 231 |
|
setview(&rightview); |
| 232 |
|
indirect[nglarangs].lcos = |
| 233 |
|
indirect[nglarangs].rcos = cos(maxtheta); |
| 234 |
< |
indirect[nglarangs].lsin = |
| 235 |
< |
-(indirect[nglarangs].rsin = sin(maxtheta)); |
| 234 |
> |
indirect[nglarangs].rsin = |
| 235 |
> |
-(indirect[nglarangs].lsin = sin(maxtheta)); |
| 236 |
|
indirect[nglarangs].theta = 0.0; |
| 237 |
|
for (i = 0; i < nglarangs; i++) { |
| 238 |
|
d = (glarang[nglarangs-1] - glarang[i])*(PI/180.); |
| 239 |
|
indirect[nglarangs-i-1].lcos = |
| 240 |
|
indirect[nglarangs+i+1].rcos = cos(d); |
| 241 |
< |
indirect[nglarangs-i-1].lsin = |
| 242 |
< |
-(indirect[nglarangs+i+1].rsin = sin(d)); |
| 241 |
> |
indirect[nglarangs+i+1].rsin = |
| 242 |
> |
-(indirect[nglarangs-i-1].lsin = sin(d)); |
| 243 |
|
d = (glarang[nglarangs-1] + glarang[i])*(PI/180.); |
| 244 |
|
indirect[nglarangs-i-1].rcos = |
| 245 |
|
indirect[nglarangs+i+1].lcos = cos(d); |
| 246 |
< |
indirect[nglarangs+i+1].lsin = |
| 247 |
< |
-(indirect[nglarangs-i-1].rsin = sin(d)); |
| 248 |
< |
indirect[nglarangs-i-1].theta = -(PI/180.)*glarang[i]; |
| 249 |
< |
indirect[nglarangs+i+1].theta = (PI/180.)*glarang[i]; |
| 246 |
> |
indirect[nglarangs-i-1].rsin = |
| 247 |
> |
-(indirect[nglarangs+i+1].lsin = sin(d)); |
| 248 |
> |
indirect[nglarangs-i-1].theta = (PI/180.)*glarang[i]; |
| 249 |
> |
indirect[nglarangs+i+1].theta = -(PI/180.)*glarang[i]; |
| 250 |
|
} |
| 251 |
|
/* open picture */ |
| 252 |
|
if (picture != NULL) { |
| 287 |
|
|
| 288 |
|
if (x <= -hlim) /* left region */ |
| 289 |
|
return(viewray(org, vd, &leftview, |
| 290 |
< |
(x+hlim)/(2.*SAMPDENS)+.5, |
| 291 |
< |
y/(2.*SAMPDENS)+.5)); |
| 290 |
> |
(x+hlim)/(2.*sampdens)+.5, |
| 291 |
> |
y/(2.*sampdens)+.5)); |
| 292 |
|
if (x >= hlim) /* right region */ |
| 293 |
|
return(viewray(org, vd, &rightview, |
| 294 |
< |
(x-hlim)/(2.*SAMPDENS)+.5, |
| 295 |
< |
y/(2.*SAMPDENS)+.5)); |
| 294 |
> |
(x-hlim)/(2.*sampdens)+.5, |
| 295 |
> |
y/(2.*sampdens)+.5)); |
| 296 |
|
/* central region */ |
| 297 |
< |
if (viewray(org, vd, &ourview, .5, y/(2.*SAMPDENS)+.5) < 0) |
| 297 |
> |
if (viewray(org, vd, &ourview, .5, y/(2.*sampdens)+.5) < 0) |
| 298 |
|
return(-1); |
| 299 |
|
spinvector(vd, vd, ourview.vup, h_theta(x)); |
| 300 |
|
return(0); |
| 301 |
|
} |
| 302 |
|
|
| 303 |
|
|
| 294 |
– |
spinvector(vres, vorig, vnorm, theta) /* rotate vector around normal */ |
| 295 |
– |
FVECT vres, vorig, vnorm; |
| 296 |
– |
double theta; |
| 297 |
– |
{ |
| 298 |
– |
extern double sin(), cos(); |
| 299 |
– |
double sint, cost, dotp; |
| 300 |
– |
FVECT vperp; |
| 301 |
– |
register int i; |
| 302 |
– |
|
| 303 |
– |
sint = sin(theta); |
| 304 |
– |
cost = cos(theta); |
| 305 |
– |
dotp = DOT(vorig, vnorm); |
| 306 |
– |
fcross(vperp, vnorm, vorig); |
| 307 |
– |
for (i = 0; i < 3; i++) |
| 308 |
– |
vres[i] = vnorm[i]*dotp*(1.-cost) + |
| 309 |
– |
vorig[i]*cost + vperp[i]*sint; |
| 310 |
– |
} |
| 311 |
– |
|
| 312 |
– |
|
| 304 |
|
memerr(s) /* malloc failure */ |
| 305 |
|
char *s; |
| 306 |
|
{ |
| 307 |
< |
fprintf(stderr, "%s: out of memory for %s\n", s); |
| 307 |
> |
fprintf(stderr, "%s: out of memory for %s\n", progname, s); |
| 308 |
|
exit(1); |
| 309 |
|
} |
| 310 |
|
|
| 329 |
|
printf("BEGIN indirect illuminance\n"); |
| 330 |
|
for (i = 0; i < nglardirs; i++) |
| 331 |
|
printf("\t%.0f\t%f\n", (180.0/PI)*indirect[i].theta, |
| 332 |
< |
PI * indirect[i].sum / (double)indirect[i].n); |
| 332 |
> |
PI * indirect[i].sum / indirect[i].n); |
| 333 |
|
printf("END indirect illuminance\n"); |
| 334 |
|
} |
