| 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; |
| 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; |
| 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 */ |
| 298 |
|
return(-1); |
| 299 |
|
spinvector(vd, vd, ourview.vup, h_theta(x)); |
| 300 |
|
return(0); |
| 295 |
– |
} |
| 296 |
– |
|
| 297 |
– |
|
| 298 |
– |
spinvector(vres, vorig, vnorm, theta) /* rotate vector around normal */ |
| 299 |
– |
FVECT vres, vorig, vnorm; |
| 300 |
– |
double theta; |
| 301 |
– |
{ |
| 302 |
– |
extern double sin(), cos(); |
| 303 |
– |
double sint, cost, dotp; |
| 304 |
– |
FVECT vperp; |
| 305 |
– |
register int i; |
| 306 |
– |
|
| 307 |
– |
sint = sin(theta); |
| 308 |
– |
cost = cos(theta); |
| 309 |
– |
dotp = DOT(vorig, vnorm); |
| 310 |
– |
fcross(vperp, vnorm, vorig); |
| 311 |
– |
for (i = 0; i < 3; i++) |
| 312 |
– |
vres[i] = vnorm[i]*dotp*(1.-cost) + |
| 313 |
– |
vorig[i]*cost + vperp[i]*sint; |
| 301 |
|
} |
| 302 |
|
|
| 303 |
|
|
