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/* Copyright (c) 1992 Regents of the University of California */ |
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/* Copyright (c) 1995 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#else |
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#include <sys/times.h> |
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#include <sys/utsname.h> |
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< |
#include <limits.h> |
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#include <unistd.h> |
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#endif |
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#endif |
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|
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int directvis = 1; /* sources visible? */ |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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|
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COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
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double salbedo = 0.; /* global scattering albedo */ |
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double seccg = 0.; /* global scattering eccentricity */ |
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double ssampdist = 0.; /* scatter sampling distance */ |
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|
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double specthresh = .15; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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|
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int backvis = 1; /* back face visibility */ |
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|
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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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|
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#else |
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struct tms tbuf; |
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struct utsname nambuf; |
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#define hostname nambuf.sysname |
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double period; |
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#define hostname nambuf.nodename |
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#endif |
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|
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tlastrept = time((time_t *)NULL); |
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gethostname(hostname, sizeof(hostname)); |
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#else |
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times(&tbuf); |
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u = ( tbuf.tms_utime + tbuf.tms_cutime ) / CLK_TCK; |
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s = ( tbuf.tms_stime + tbuf.tms_cstime ) / CLK_TCK; |
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#ifdef _SC_CLK_TCK |
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period = 1.0 / sysconf(_SC_CLK_TCK); |
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#else |
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period = 1.0 / 60.0; |
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#endif |
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u = ( tbuf.tms_utime + tbuf.tms_cutime ) * period; |
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s = ( tbuf.tms_stime + tbuf.tms_cstime ) * period; |
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uname(&nambuf); |
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#endif |
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|
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nrays, pctdone, u/3600., s/3600., |
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(tlastrept-tstart)/3600., hostname); |
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eputs(errmsg); |
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#ifndef BSD |
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signal(SIGCONT, report); |
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#undef hostname |
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#endif |
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} |
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#else |
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report() /* report progress */ |
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sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
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nrays, pctdone, (tlastrept-tstart)/3600.0); |
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eputs(errmsg); |
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signal(SIGCONT, report); |
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} |
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#endif |
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|
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b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
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else |
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b = fillsample(scanline+i-xstep, |
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zline ? zline+i-xstep : NULL, |
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zline ? zline+i-xstep : (float *)NULL, |
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i-xstep, y, xstep, 0, b/2); |
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if (sd) *sd++ = nc & 1 ? bl : b; |
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bl = b; |
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zline[ysize] = zbar[ysize][i]; |
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} |
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|
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b = fillsample(vline, zbar[0] ? zline : NULL, |
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b = fillsample(vline, zbar[0] ? zline : (float *)NULL, |
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i, y, 0, ysize, b/2); |
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|
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for (j = 1; j < ysize; j++) |
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/* recurse */ |
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ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
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|
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ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
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ncut += fillsample(colline+(len>>1), |
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zline ? zline+(len>>1) : (float *)NULL, |
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x+(xlen>>1), y+(ylen>>1), |
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xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
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|
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{ |
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static RAY thisray; |
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|
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< |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
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(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
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if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, &ourview, |
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(x+pixjitter())/hres, (y+pixjitter())/vres)) < -FTINY) { |
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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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int x, y; |
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|
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if (oldfile == NULL) |
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return(0); |
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|
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goto gotzip; |
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|
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if ((fp = fopen(oldfile, "r")) == NULL) { |
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sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
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error(WARNING, errmsg); |
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return(0); |
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goto gotzip; |
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} |
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#ifdef MSDOS |
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setmode(fileno(fp), O_BINARY); |
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oldfile); |
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error(WARNING, errmsg); |
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fclose(fp); |
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return(0); |
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goto gotzip; |
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} |
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|
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if (x != hres || y != vres) { |
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fclose(fp); |
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unlink(oldfile); |
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return(y); |
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gotzip: |
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if (fflush(stdout) == EOF) |
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error(SYSTEM, "error writing picture header"); |
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return(0); |
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writerr: |
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sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
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error(SYSTEM, errmsg); |
