| 1 |
|
#ifndef lint |
| 2 |
< |
static const char RCSid[] = "$Id$"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 4 |
|
/* |
| 5 |
|
* Convert Radiance -> OpenGL surfaces. |
| 280 |
|
x1 = o->oargs.farg[1] - o->oargs.farg[4]; |
| 281 |
|
y1 = o->oargs.farg[3] - o->oargs.farg[0]; |
| 282 |
|
/* z1 = 0; */ |
| 283 |
< |
d = 180./PI * asin(sqrt(x1*x1 + y1*y1) / h); |
| 283 |
> |
d = x1*x1 + y1*y1; |
| 284 |
> |
if (d <= FTINY*FTINY) |
| 285 |
> |
x1 = 1.; |
| 286 |
> |
else |
| 287 |
> |
d = 180./PI * asin(sqrt(d) / h); |
| 288 |
|
if (o->oargs.farg[5] < o->oargs.farg[2]) |
| 289 |
|
d = 180. - d; |
| 290 |
|
if (d > FTINY) |
| 300 |
|
o_ring(o) /* convert a ring */ |
| 301 |
|
register OBJREC *o; |
| 302 |
|
{ |
| 303 |
< |
double x1, y1, d; |
| 303 |
> |
double x1, y1, d, h; |
| 304 |
|
|
| 305 |
|
if (o->oargs.nfargs != 8) |
| 306 |
|
objerror(o, USER, "bad # real arguments"); |
| 329 |
|
glTranslated((GLdouble)o->oargs.farg[0], (GLdouble)o->oargs.farg[1], |
| 330 |
|
(GLdouble)o->oargs.farg[2]); |
| 331 |
|
/* compute rotation angle */ |
| 332 |
< |
d = VLEN(o->oargs.farg+3); |
| 333 |
< |
if (d <= FTINY) |
| 332 |
> |
h = VLEN(o->oargs.farg+3); |
| 333 |
> |
if (h <= FTINY) |
| 334 |
|
return; |
| 335 |
|
x1 = -o->oargs.farg[4]; |
| 336 |
|
y1 = o->oargs.farg[3]; |
| 337 |
|
/* z1 = 0; */ |
| 338 |
< |
d = 180./PI * asin(sqrt(x1*x1 + y1*y1) / d); |
| 338 |
> |
d = x1*x1 + y1*y1; |
| 339 |
> |
if (d <= FTINY*FTINY) |
| 340 |
> |
x1 = 1.; |
| 341 |
> |
else |
| 342 |
> |
d = 180./PI * asin(sqrt(d) / h); |
| 343 |
|
if (o->oargs.farg[5] < 0.) |
| 344 |
|
d = 180. - d; |
| 345 |
|
if (d > FTINY) |
