--- ray/src/rt/normal.c 1992/01/16 12:05:29 2.9 +++ ray/src/rt/normal.c 1992/03/03 16:20:02 2.12 @@ -43,10 +43,10 @@ extern double specjitter; /* specular sampling jitte /* specularity flags */ #define SP_REFL 01 /* has reflected specular component */ #define SP_TRAN 02 /* has transmitted specular */ -#define SP_PURE 010 /* purely specular (zero roughness) */ -#define SP_FLAT 020 /* flat reflecting surface */ -#define SP_RBLT 040 /* reflection below sample threshold */ -#define SP_TBLT 0100 /* transmission below threshold */ +#define SP_PURE 04 /* purely specular (zero roughness) */ +#define SP_FLAT 010 /* flat reflecting surface */ +#define SP_RBLT 020 /* reflection below sample threshold */ +#define SP_TBLT 040 /* transmission below threshold */ typedef struct { OBJREC *mp; /* material pointer */ @@ -194,8 +194,7 @@ register RAY *r; /* check threshold */ if (specthresh > FTINY && ((specthresh >= 1.-FTINY || - specthresh + (.05 - .1*urand(8199+samplendx)) - > nd.rspec))) + specthresh + (.05 - .1*frandom()) > nd.rspec))) nd.specfl |= SP_RBLT; /* compute reflected ray */ for (i = 0; i < 3; i++) @@ -225,8 +224,7 @@ register RAY *r; if (specthresh > FTINY && ((specthresh >= 1.-FTINY || specthresh + - (.05 - .1*urand(7241+samplendx)) - > nd.tspec))) + (.05 - .1*frandom()) > nd.tspec))) nd.specfl |= SP_TBLT; if (r->crtype & SHADOW || DOT(r->pert,r->pert) <= FTINY*FTINY) { @@ -256,7 +254,8 @@ register RAY *r; transtest *= bright(lr.rcol); transdist = r->rot + lr.rt; } - } + } else + transtest = 0; if (r->crtype & SHADOW) /* the rest is shadow */ return; @@ -266,7 +265,8 @@ register RAY *r; if (nd.specfl & SP_PURE && nd.rdiff <= FTINY && nd.tdiff <= FTINY) return; /* 100% pure specular */ - if (r->ro->otype == OBJ_FACE || r->ro->otype == OBJ_RING) + if (r->ro != NULL && (r->ro->otype == OBJ_FACE || + r->ro->otype == OBJ_RING)) nd.specfl |= SP_FLAT; if (nd.specfl & (SP_REFL|SP_TRAN) && !(nd.specfl & SP_PURE)) @@ -366,7 +366,8 @@ register NORMDAT *np; else VCOPY(sr.rdir, np->prdir); /* else no jitter */ rayvalue(&sr); - multcolor(sr.rcol, np->scolor); + scalecolor(sr.rcol, np->tspec); + multcolor(sr.rcol, np->mcolor); /* modified by color */ addcolor(r->rcol, sr.rcol); ndims--; }