| 101 |
|
src->so = so; |
| 102 |
|
/* get the face */ |
| 103 |
|
f = getface(so); |
| 104 |
+ |
if (f->area == 0.0) |
| 105 |
+ |
objerror(so, USER, "zero source area"); |
| 106 |
|
/* find the center */ |
| 107 |
|
for (j = 0; j < 3; j++) { |
| 108 |
|
src->sloc[j] = 0.0; |
| 111 |
|
src->sloc[j] /= (double)f->nv; |
| 112 |
|
} |
| 113 |
|
if (!inface(src->sloc, f)) |
| 114 |
< |
objerror(so, USER, "cannot hit center"); |
| 114 |
> |
objerror(so, USER, "cannot hit source center"); |
| 115 |
|
src->sflags |= SFLAT; |
| 116 |
|
VCOPY(src->snorm, f->norm); |
| 117 |
|
src->ss2 = f->area; |
| 173 |
|
if (so->oargs.nfargs != 4) |
| 174 |
|
objerror(so, USER, "bad # arguments"); |
| 175 |
|
if (so->oargs.farg[3] <= FTINY) |
| 176 |
< |
objerror(so, USER, "illegal radius"); |
| 176 |
> |
objerror(so, USER, "illegal source radius"); |
| 177 |
|
VCOPY(src->sloc, so->oargs.farg); |
| 178 |
|
src->srad = so->oargs.farg[3]; |
| 179 |
|
src->ss2 = PI * src->srad * src->srad; |
| 195 |
|
src->so = so; |
| 196 |
|
/* get the ring */ |
| 197 |
|
co = getcone(so, 0); |
| 198 |
+ |
if (CO_R1(co) <= FTINY) |
| 199 |
+ |
objerror(so, USER, "illegal source radius"); |
| 200 |
|
VCOPY(src->sloc, CO_P0(co)); |
| 201 |
|
if (CO_R0(co) > 0.0) |
| 202 |
< |
objerror(so, USER, "cannot hit center"); |
| 202 |
> |
objerror(so, USER, "cannot hit source center"); |
| 203 |
|
src->sflags |= SFLAT; |
| 204 |
|
VCOPY(src->snorm, co->ad); |
| 205 |
|
src->srad = CO_R1(co); |
| 220 |
|
src->so = so; |
| 221 |
|
/* get the cylinder */ |
| 222 |
|
co = getcone(so, 0); |
| 223 |
+ |
if (CO_R0(co) <= FTINY) |
| 224 |
+ |
objerror(so, USER, "illegal source radius"); |
| 225 |
|
if (CO_R0(co) > .2*co->al) /* heuristic constraint */ |
| 226 |
|
objerror(so, WARNING, "source aspect too small"); |
| 227 |
|
src->sflags |= SCYL; |
| 255 |
|
return(ns); |
| 256 |
|
if ((ns = (SPOT *)malloc(sizeof(SPOT))) == NULL) |
| 257 |
|
return(NULL); |
| 258 |
+ |
if (m->oargs.farg[3] <= FTINY) |
| 259 |
+ |
objerror(m, USER, "zero angle"); |
| 260 |
|
ns->siz = 2.0*PI * (1.0 - cos(PI/180.0/2.0 * m->oargs.farg[3])); |
| 261 |
|
VCOPY(ns->aim, m->oargs.farg+4); |
| 262 |
|
if ((ns->flen = normalize(ns->aim)) == 0.0) |