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root/radiance/ray/src/rt/aniso.c
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Comparing ray/src/rt/aniso.c (file contents):
Revision 2.36 by greg, Mon Mar 3 00:10:51 2003 UTC vs.
Revision 2.38 by greg, Wed Mar 12 04:59:05 2003 UTC

# Line 1 | Line 1
1   #ifndef lint
2 < static const char       RCSid[] = "$Id$";
2 > static const char RCSid[] = "$Id$";
3   #endif
4   /*
5   *  Shading functions for anisotropic materials.
# Line 265 | Line 265 | register RAY  *r;
265                                                  /* diffuse reflection */
266          nd.rdiff = 1.0 - nd.trans - nd.rspec;
267  
268 <        if (r->ro != NULL && isflat(r->ro->otype))
268 >        if (r->ro != NULL && isflat(r->ro->otype) &&
269 >                        DOT(r->pert,r->pert) <= FTINY*FTINY)
270                  nd.specfl |= SP_FLAT;
271  
272          getacoords(r, &nd);                     /* set up coordinates */
# Line 318 | Line 319 | register ANISODAT  *np;
319          errno = 0;
320          for (i = 0; i < 3; i++)
321                  np->u[i] = evalue(mf->ep[i]);
322 <        if (errno) {
322 >        if (errno == EDOM || errno == ERANGE) {
323                  objerror(np->mp, WARNING, "compute error");
324                  np->specfl |= SP_BADU;
325                  return;

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