--- ray/src/hd/rholo2.c 1998/11/23 17:50:26 3.14 +++ ray/src/hd/rholo2.c 1998/11/23 18:17:53 3.15 @@ -14,66 +14,25 @@ static char SCCSid[] = "$SunId$ SGI"; packrays(rod, p) /* pack ray origins and directions */ -float *rod; +register float *rod; register PACKET *p; { - static int nmh = 0; - static int *mhtab; - FVECT ro, rd; - register BEAM *bp; + static FVECT ro, rd; GCOORD gc[2]; - int ila[4], offset; + int ila[2], hsh; double d, sl[4]; - register int i, j, k; + register int i; if (!hdbcoord(gc, hdlist[p->hd], p->bi)) error(CONSISTENCY, "bad beam index in packrays"); - /* uniqueness hash */ - if ((bp = hdgetbeam(hdlist[p->hd], p->bi)) != NULL) { - if (2*bp->nrm > nmh) { - if (nmh) free((char *)mhtab); - nmh = 2*bp->nrm + 1; - mhtab = (int *)malloc(nmh*sizeof(int)); - if (mhtab == NULL) - error(SYSTEM, "out of memory in packrays"); - } - for (k = nmh; k--; ) - mhtab[k] = -1; - for (i = bp->nrm; i--; ) { - ila[0] = hdbray(bp)[i].r[0][0]; - ila[1] = hdbray(bp)[i].r[0][1]; - ila[2] = hdbray(bp)[i].r[1][0]; - ila[3] = hdbray(bp)[i].r[1][1]; - for (k = ilhash(ila,4); mhtab[k%nmh] >= 0; k++) - ; - mhtab[k%nmh] = i; - } - } - /* init each ray */ ila[0] = p->hd; ila[1] = p->bi; - offset = ilhash(ila,2) + p->nc; + hsh = ilhash(ila,2) + p->nc; for (i = 0; i < p->nr; i++) { - do { /* next unique ray */ - multisamp(sl, 4, urand(offset+i)); - p->ra[i].r[0][0] = ila[0] = sl[0] * 256.; - p->ra[i].r[0][1] = ila[1] = sl[1] * 256.; - p->ra[i].r[1][0] = ila[2] = sl[2] * 256.; - p->ra[i].r[1][1] = ila[3] = sl[3] * 256.; - if (bp == NULL) - break; - for (k = ilhash(ila,4); (j = mhtab[k%nmh]) >= 0; k++) - if (hdbray(bp)[j].r[0][0] == - p->ra[i].r[0][0] && - hdbray(bp)[j].r[0][1] == - p->ra[i].r[0][1] && - hdbray(bp)[j].r[1][0] == - p->ra[i].r[1][0] && - hdbray(bp)[j].r[1][1] == - p->ra[i].r[1][1]) { - offset += bp->nrm - j; - break; - } - } while (j >= 0); + multisamp(sl, 4, urand(hsh+i)); + p->ra[i].r[0][0] = sl[0] * 256.; + p->ra[i].r[0][1] = sl[1] * 256.; + p->ra[i].r[1][0] = sl[2] * 256.; + p->ra[i].r[1][1] = sl[3] * 256.; d = hdray(ro, rd, hdlist[p->hd], gc, p->ra[i].r); if (!vdef(OBSTRUCTIONS)) d *= frandom(); /* random offset */