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/* Copyright (c) 1986 Regents of the University of California */ |
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/* Copyright (c) 1991 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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double pctdone = 0.0; /* percentage done */ |
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long tlastrept = 0L; /* time at last report */ |
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extern long time(); |
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extern long tstart; /* starting time */ |
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extern long nrays; /* number of rays traced */ |
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#define MAXDIV 32 /* maximum sample size */ |
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} |
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#ifdef BSD |
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report() /* report progress */ |
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{ |
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#ifdef BSD |
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struct rusage rubuf; |
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double t; |
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sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f CPU hours\n", |
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nrays, pctdone, t/3600.0); |
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eputs(errmsg); |
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tlastrept = time((long *)0); |
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} |
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#else |
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report() /* report progress */ |
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{ |
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signal(SIGALRM, report); |
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sprintf(errmsg, "%ld rays, %4.2f%% done\n", nrays, pctdone); |
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#endif |
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tlastrept = time((long *)0); |
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sprintf(errmsg, "%ld rays, %4.2f%% done 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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if (ralrm > 0) |
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alarm(ralrm); |
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} |
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#endif |
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render(zfile, oldfile) /* render the scene */ |
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fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
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/* recover file and compute first */ |
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i = salvage(oldfile); |
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if (zfd != -1 && lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
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if (zfd != -1 && i > 0 && |
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lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
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error(SYSTEM, "z file seek error in render"); |
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pctdone = 100.0*i/vresolu; |
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if (ralrm > 0) /* report init stats */ |
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report(); |
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ypos = vresolu-1 - i; |
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fillscanline(scanbar[0], zbar[0], hresolu, ypos, psample); |
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ystep = psample; |
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/* compute scanlines */ |
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for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
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/* record progress */ |
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pctdone = 100.0*(vresolu-1-ypos-ystep)/vresolu; |
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/* bottom adjust? */ |
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if (ypos < 0) { |
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ystep += ypos; |
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} |
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if (fflush(stdout) == EOF) |
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goto writerr; |
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/* record progress */ |
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pctdone = 100.0*(vresolu-1-ypos)/vresolu; |
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if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
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report(); |
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} |
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/* clean up */ |
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if (zfd != -1) { |