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* Rtrace support routines for holodeck rendering |
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*/ |
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#include <time.h> |
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#include "rholo.h" |
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#include "paths.h" |
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#include "random.h" |
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double gmin[2], gmax[2]; /* grid coordinate limits */ |
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}; /* a grid coordinate range */ |
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static void initeyelim(struct gclim *gcl, HOLO *hp, GCOORD *gc); |
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static void groweyelim(struct gclim *gcl, GCOORD *gc, |
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double r0, double r1, int tight); |
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static int clipeyelim(short rrng[2][2], struct gclim *gcl); |
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|
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static |
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initeyelim(gcl, hp, gc) /* initialize grid coordinate limits */ |
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register struct gclim *gcl; |
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register HOLO *hp; |
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GCOORD *gc; |
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|
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static void |
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initeyelim( /* initialize grid coordinate limits */ |
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struct gclim *gcl, |
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HOLO *hp, |
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GCOORD *gc |
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) |
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{ |
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register RREAL *v; |
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register int i; |
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RREAL *v; |
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int i; |
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|
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if (hp != NULL) { |
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hdgrid(gcl->egp, gcl->hp = hp, myeye.vpt); |
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} |
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static |
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groweyelim(gcl, gc, r0, r1, tight) /* grow grid limits about eye point */ |
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register struct gclim *gcl; |
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GCOORD *gc; |
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double r0, r1; |
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int tight; |
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static void |
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groweyelim( /* grow grid limits about eye point */ |
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struct gclim *gcl, |
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GCOORD *gc, |
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double r0, |
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double r1, |
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int tight |
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) |
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{ |
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FVECT gp, ab; |
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double ab2, od, cfact; |
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f = wallpos*(wallpos*sqcoef[gw] + licoef[gw]) + cnst; |
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for (i = 0; i < 2; i++) { |
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if (i) { /* swap x and y coefficients */ |
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register double t; |
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double t; |
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t = a; a = c; c = t; |
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t = d; d = e; e = t; |
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} |
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d*(c*d-b*e) + f*b*b); |
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while (n-- > 0) { |
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if (gc->w>>1 == gi[i] && |
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(gc->w&1) ^ root[n] < gp[gc->w>>1]) { |
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(gc->w&1) ^ (root[n] < gp[gc->w>>1])) { |
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if (gc->w&1) |
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gcl->gmin[i] = -FHUGE; |
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else |
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n = quadratic(root, a, b*yex+d, yex*(yex*c+e)+f); |
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while (n-- > 0) { |
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if (gc->w>>1 == gi[i] && |
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(gc->w&1) ^ root[n] < gp[gc->w>>1]) |
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(gc->w&1) ^ (root[n] < gp[gc->w>>1])) |
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continue; |
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if (root[n] < gcl->gmin[i]) |
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gcl->gmin[i] = root[n]; |
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static int |
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clipeyelim(rrng, gcl) /* clip eye limits to grid cell */ |
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register short rrng[2][2]; |
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register struct gclim *gcl; |
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clipeyelim( /* clip eye limits to grid cell */ |
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short rrng[2][2], |
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struct gclim *gcl |
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) |
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{ |
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int incell = 1; |
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register int i; |
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int i; |
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for (i = 0; i < 2; i++) { |
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if (gcl->gmin[i] < gcl->gc.i[i]) |
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} |
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packrays(rod, p) /* pack ray origins and directions */ |
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register float *rod; |
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register PACKET *p; |
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void |
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packrays( /* pack ray origins and directions */ |
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float *rod, |
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PACKET *p |
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) |
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{ |
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#if 0 |
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double dist2sum = 0.; |
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GCOORD gc[2]; |
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FVECT ro, rd; |
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double d; |
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register int i; |
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int i; |
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if (!hdbcoord(gc, hdlist[p->hd], p->bi)) |
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error(CONSISTENCY, "bad beam index in packrays"); |
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retry: |
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if (useyelim) { |
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initeyelim(&eyelim, NULL, gc+1); |
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p->ra[i].r[0][0] = (int)(frandom()*rrng0[0][1]) |
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+ rrng0[0][0]; |
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p->ra[i].r[0][1] = (int)(frandom()*rrng0[1][1]) |
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+ rrng0[1][0]; |
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p->ra[i].r[0][0] = irandom(rrng0[0][1]) + rrng0[0][0]; |
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p->ra[i].r[0][1] = irandom(rrng0[1][1]) + rrng0[1][0]; |
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groweyelim(&eyelim, gc, |
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(1./256.)*(p->ra[i].r[0][0]+.5), |
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(1./256.)*(p->ra[i].r[0][1]+.5), 1); |
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#endif |
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goto retry; |
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} |
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p->ra[i].r[1][0] = (int)(frandom()*rrng1[0][1]) |
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+ rrng1[0][0]; |
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p->ra[i].r[1][1] = (int)(frandom()*rrng1[1][1]) |
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+ rrng1[1][0]; |
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p->ra[i].r[1][0] = irandom(rrng1[0][1]) + rrng1[0][0]; |
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p->ra[i].r[1][1] = irandom(rrng1[1][1]) + rrng1[1][0]; |
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} else { |
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p->ra[i].r[0][0] = frandom() * 256.; |
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p->ra[i].r[0][1] = frandom() * 256.; |
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p->ra[i].r[1][0] = frandom() * 256.; |
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p->ra[i].r[1][1] = frandom() * 256.; |
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p->ra[i].r[0][0] = random() & 0xff; |
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p->ra[i].r[0][1] = random() & 0xff; |
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p->ra[i].r[1][0] = random() & 0xff; |
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p->ra[i].r[1][1] = random() & 0xff; |
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} |
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d = hdray(ro, rd, hdlist[p->hd], gc, p->ra[i].r); |
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#if 0 |
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} |
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donerays(p, rvl) /* encode finished ray computations */ |
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register PACKET *p; |
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register float *rvl; |
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void |
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donerays( /* encode finished ray computations */ |
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PACKET *p, |
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float *rvl |
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) |
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{ |
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double d; |
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register int i; |
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int i; |
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for (i = 0; i < p->nr; i++) { |
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setcolr(p->ra[i].v, rvl[0], rvl[1], rvl[2]); |
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int |
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done_rtrace() /* clean up and close rtrace calculation */ |
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done_rtrace(void) /* clean up and close rtrace calculation */ |
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{ |
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int status; |
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/* already closed? */ |
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} |
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new_rtrace() /* restart rtrace calculation */ |
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void |
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new_rtrace(void) /* restart rtrace calculation */ |
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{ |
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char combuf[128]; |
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if (vdef(TIME)) /* reset end time */ |
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endtime = starttime + vflt(TIME)*3600. + .5; |
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if (vdef(RIF)) { /* rerun rad to update octree */ |
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sprintf(combuf, "rad -v 0 -s -w %s", vval(RIF)); |
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sprintf(combuf, "rad -v 0 -s -w -N %d %s", |
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ncprocs, vval(RIF)); |
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if (system(combuf)) |
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error(WARNING, "error running rad"); |
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} |
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} |
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getradfile() /* run rad and get needed variables */ |
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int |
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getradfile(void) /* run rad and get needed variables */ |
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{ |
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static short mvar[] = {OCTREE,EYESEP,-1}; |
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static char tf1[] = TEMPLATE; |
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char tf2[64]; |
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char combuf[256]; |
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char *pippt; |
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register int i; |
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register char *cp; |
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char *pippt = NULL; |
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int i; |
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char *cp; |
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/* check if rad file specified */ |
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if (!vdef(RIF)) |
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return(0); |
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mktemp(tf1); |
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sprintf(tf2, "%s.rif", tf1); |
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sprintf(combuf, |
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"rad -v 0 -s -e -w %s OPTFILE=%s | egrep '^[ \t]*(NOMATCH", |
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vval(RIF), tf1); |
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"rad -v 0 -s -e -w -N %d %s OPTFILE=%s | egrep '^[ \t]*(NOMATCH", |
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ncprocs, vval(RIF), tf1); |
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cp = combuf; |
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while (*cp){ |
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if (*cp == '|') pippt = cp; |
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loadvars(tf2); /* load variables */ |
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unlink(tf2); |
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} |
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rtargc += wordfile(rtargv+rtargc, tf1); /* get rtrace options */ |
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/* get rtrace options */ |
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rtargc += wordfile(rtargv+rtargc, MAXRTARGC-rtargc, tf1); |
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unlink(tf1); /* clean up */ |
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return(1); |
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} |
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report(t) /* report progress so far */ |
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time_t t; |
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void |
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report( /* report progress so far */ |
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time_t t |
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) |
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{ |
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static time_t seconds2go = 1000000; |
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