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#include <sys/types.h> |
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#ifndef NON_POSIX |
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#ifdef BSD |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#include "platform.h" |
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#ifdef NON_POSIX |
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#ifdef MINGW |
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#include <sys/time.h> |
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#endif |
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#else |
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#include <sys/times.h> |
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#include <unistd.h> |
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#ifdef BSD |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#else |
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#include <sys/times.h> |
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#include <unistd.h> |
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#endif |
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#endif |
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#endif |
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#include <time.h> |
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#include <signal.h> |
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#include "platform.h" |
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#include "ray.h" |
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#include "paths.h" |
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#include "ambient.h" |
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double mblur = 0.; /* motion blur parameter */ |
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double dblur = 0.; /* depth-of-field blur parameter */ |
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void (*trace)() = NULL; /* trace call */ |
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int do_irrad = 0; /* compute irradiance? */ |
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int rand_samp = 0; /* pure Monte Carlo sampling? */ |
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .05; /* shadow threshold */ |
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double shadcert = .5; /* shadow certainty */ |
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int ambdiv = 512; /* ambient divisions */ |
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int ambssamp = 128; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
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char *amblist[128]; /* ambient include/exclude list */ |
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char *amblist[AMBLLEN]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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int ralrm = 0; /* seconds between reports */ |
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} |
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#else |
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static void |
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report(int) /* report progress */ |
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report(int dummy) /* report progress */ |
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{ |
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tlastrept = time((time_t *)NULL); |
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sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
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{ |
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RAY thisray; |
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FVECT lorg, ldir; |
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double hpos, vpos, lmax; |
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double hpos, vpos, vdist, lmax; |
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register int i; |
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/* compute view ray */ |
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hpos = (x+pixjitter())/hres; |
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vpos = (y+pixjitter())/vres; |
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setcolor(col, 0.0, 0.0, 0.0); |
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return(0.0); |
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} |
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samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
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vdist = ourview.vdist; |
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/* set pixel index */ |
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samplendx = pixnumber(x,y,hres,vres); |
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/* optional motion blur */ |
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if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
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&lastview, hpos, vpos)) >= -FTINY) { |
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register int i; |
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register double d = mblur*(.5-urand(281+samplendx)); |
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thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
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} |
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if (normalize(thisray.rdir) == 0.0) |
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return(0.0); |
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vdist = (1.-d)*vdist + d*lastview.vdist; |
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} |
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/* optional depth-of-field */ |
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if (dblur > FTINY && vdist > FTINY) { |
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double vc, dfh, dfv; |
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/* square/circle conv. */ |
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dfh = vc = frandom(); |
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dfv = frandom(); |
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dfh *= .5*dblur*sqrt(1. - .5*dfv*dfv); |
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dfv *= .5*dblur*sqrt(1. - .5*vc*vc); |
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if (ourview.type == VT_PER || ourview.type == VT_PAR) { |
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dfh /= sqrt(ourview.hn2); |
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dfv /= sqrt(ourview.vn2); |
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for (i = 3; i--; ) { |
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vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
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thisray.rorg[i] += dfh*ourview.hvec[i] + |
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dfv*ourview.vvec[i] ; |
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thisray.rdir[i] = vc - thisray.rorg[i]; |
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} |
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} else { /* non-standard view case */ |
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double dfd = PI/4.*dblur*(.5 - frandom()); |
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if (ourview.type != VT_ANG && ourview.type != VT_PLS) { |
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if (ourview.type != VT_CYL) |
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dfh /= sqrt(ourview.hn2); |
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dfv /= sqrt(ourview.vn2); |
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} |
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for (i = 3; i--; ) { |
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vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
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thisray.rorg[i] += dfh*ourview.hvec[i] + |
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dfv*ourview.vvec[i] + |
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dfd*ourview.vdir[i] ; |
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thisray.rdir[i] = vc - thisray.rorg[i]; |
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} |
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} |
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if (normalize(thisray.rdir) == 0.0) |
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return(0.0); |
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} |
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rayorigin(&thisray, NULL, PRIMARY, 1.0); |
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rayorigin(&thisray, PRIMARY, NULL, NULL); |
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rayvalue(&thisray); /* trace ray */ |
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error(SYSTEM, errmsg); |
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return -1; /* pro forma return */ |
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} |
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static int |
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pixnumber( /* compute pixel index (brushed) */ |
