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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* rpict.c - routines and variables for picture generation. |
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* |
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* 8/14/85 |
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*/ |
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#include "ray.h" |
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#include "copyright.h" |
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#include <sys/types.h> |
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|
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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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#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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#include <time.h> |
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#include <signal.h> |
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#include <fcntl.h> |
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|
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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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#include "view.h" |
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#include "random.h" |
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#include "paths.h" |
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#include "rtmisc.h" /* myhostname() */ |
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#include "resolu.h" |
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#include "random.h" |
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#define RFTEMPLATE "rfXXXXXX" |
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|
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#ifndef SIGCONT |
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#ifdef SIGIO /* XXX can we live without this? */ |
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#define SIGCONT SIGIO |
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#endif |
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#endif |
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|
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CUBE thescene; /* our scene */ |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
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|
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int dimlist[MAXDIM]; /* sampling dimensions */ |
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int ndims = 0; /* number of sampling dimensions */ |
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int samplendx; /* sample index number */ |
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|
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//extern void ambnotify(); |
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void (*addobjnotify[])() = {ambnotify, NULL}; |
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|
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VIEW ourview = STDVIEW; /* view parameters */ |
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int hresolu = 512; /* horizontal resolution */ |
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int vresolu = 512; /* vertical resolution */ |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
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|
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int psample = 4; /* pixel sample size */ |
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double maxdiff = .05; /* max. difference for interpolation */ |
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double dstrpix = 0.67; /* square pixel distribution */ |
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double maxdiff = .05; /* max. difference for interpolation */ |
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double dstrpix = 0.67; /* square pixel distribution */ |
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|
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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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double mblur = 0.; /* motion blur parameter */ |
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|
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double dblur = 0.; /* depth-of-field blur parameter */ |
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|
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void (*trace)() = NULL; /* trace call */ |
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|
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int do_irrad = 0; /* compute irradiance? */ |
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|
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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 directrelay = 1; /* number of source relays */ |
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int vspretest = 512; /* virtual source pretest density */ |
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int directinvis = 0; /* sources invisible? */ |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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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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double specthresh = .15; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
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COLOR salbedo = BLKCOLOR; /* 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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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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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 = 7; /* maximum recursion depth */ |
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double minweight = 4e-3; /* minimum ray weight */ |
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|
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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int ambres = 32; /* ambient resolution */ |
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int ambdiv = 128; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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int ambvwt = 0; /* initial weight for ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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int ambres = 64; /* ambient resolution */ |
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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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double pctdone = 0.0; /* percentage done */ |
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double pctdone = 0.0; /* percentage done */ |
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time_t tlastrept = 0L; /* time at last report */ |
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time_t tstart; /* starting time */ |
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|
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long tlastrept = 0L; /* time at last report */ |
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#define MAXDIV 16 /* maximum sample size */ |
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|
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extern long time(); |
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extern long tstart; /* starting time */ |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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|
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extern long nrays; /* number of rays traced */ |
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int hres, vres; /* resolution for this frame */ |
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|
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#define MAXDIV 16 /* maximum sample size */ |
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static VIEW lastview; /* the previous view input */ |
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|
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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//extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
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|
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double pixvalue(); |
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//double pixvalue(); |
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|
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static void report(int); |
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static int nextview(FILE *fp); |
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static void render(char *zfile, char *oldfile); |
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static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
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int y, int xstep); |
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static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
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int y, int ysize); |
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static int fillsample(COLOR *colline, float *zline, int x, int y, |
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int xlen, int ylen, int b); |
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static double pixvalue(COLOR col, int x, int y); |
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static int salvage(char *oldfile); |
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static int pixnumber(int x, int y, int xres, int yres); |
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|
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|
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#ifdef RHAS_STAT |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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int |
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file_exists(fname) /* ordinary file exists? */ |
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char *fname; |
141 |
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{ |
142 |
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struct stat sbuf; |
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if (stat(fname, &sbuf) < 0) return(0); |
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return((sbuf.st_mode & S_IFREG) != 0); |
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} |
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#else |
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#define file_exists(f) (access(f,F_OK)==0) |
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#endif |
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|
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|
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void |
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quit(code) /* quit program */ |
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int code; |
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{ |
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if (code || ralrm > 0) /* report status */ |
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report(); |
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|
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if (code) /* report status */ |
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report(0); |
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#ifndef NON_POSIX |
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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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#endif |
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exit(code); |
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} |
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#ifdef BSD |
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report() /* report progress */ |
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#ifndef NON_POSIX |
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static void |
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report(int dummy) /* report progress */ |
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{ |
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double u, s; |
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#ifdef BSD |
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struct rusage rubuf; |
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double t; |
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#else |
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struct tms tbuf; |
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double period; |
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#endif |
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|
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tlastrept = time((time_t *)NULL); |
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#ifdef BSD |
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getrusage(RUSAGE_SELF, &rubuf); |
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t = (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
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t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
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u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
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s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
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getrusage(RUSAGE_CHILDREN, &rubuf); |
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t += (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
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t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
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u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
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s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
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#else |
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times(&tbuf); |
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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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#endif |
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|
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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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sprintf(errmsg, |
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"%lu rays, %4.2f%% after %.3fu %.3fs %.3fr hours on %s\n", |
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nrays, pctdone, u/3600., s/3600., |
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(tlastrept-tstart)/3600., myhostname()); |
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eputs(errmsg); |
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tlastrept = time((long *)0); |
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#ifdef SIGCONT |
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signal(SIGCONT, report); |
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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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static void |
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report(int dummy) /* report progress */ |
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{ |
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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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tlastrept = time((time_t *)NULL); |
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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(SIGALRM, report); |
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} |
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#endif |
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|
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|
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render(zfile, oldfile) /* render the scene */ |
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char *zfile, *oldfile; |
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extern void |
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rpict( /* generate image(s) */ |
219 |
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int seq, |
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char *pout, |
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char *zout, |
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char *prvr |
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) |
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/* |
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* If seq is greater than zero, then we will render a sequence of |
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* images based on view parameter strings read from the standard input. |
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* If pout is NULL, then all images will be sent to the standard ouput. |
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* If seq is greater than zero and prvr is an integer, then it is the |
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* frame number at which rendering should begin. Preceeding view parameter |
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* strings will be skipped in the input. |
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* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
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* Note that pout and zout should contain %d format specifications for |
233 |
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* sequenced file naming. |
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*/ |
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{ |
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extern long lseek(); |
236 |
> |
char fbuf[128], fbuf2[128]; |
237 |
> |
int npicts; |
238 |
> |
register char *cp; |
239 |
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RESOLU rs; |
240 |
> |
double pa; |
241 |
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/* check sampling */ |
242 |
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if (psample < 1) |
243 |
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psample = 1; |
244 |
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else if (psample > MAXDIV) { |
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sprintf(errmsg, "pixel sampling reduced from %d to %d", |
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psample, MAXDIV); |
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error(WARNING, errmsg); |
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psample = MAXDIV; |
249 |
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} |
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/* get starting frame */ |
251 |
> |
if (seq <= 0) |
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seq = 0; |
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> |
else if (prvr != NULL && isint(prvr)) { |
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register int rn; /* skip to specified view */ |
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> |
if ((rn = atoi(prvr)) < seq) |
256 |
> |
error(USER, "recover frame less than start frame"); |
257 |
> |
if (pout == NULL) |
258 |
> |
error(USER, "missing output file specification"); |
259 |
> |
for ( ; seq < rn; seq++) |
260 |
> |
if (nextview(stdin) == EOF) |
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error(USER, "unexpected EOF on view input"); |
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> |
setview(&ourview); |
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> |
prvr = fbuf; /* mark for renaming */ |
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> |
} |
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> |
if ((pout != NULL) & (prvr != NULL)) { |
266 |
> |
sprintf(fbuf, pout, seq); |
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> |
if (!strcmp(prvr, fbuf)) { /* rename */ |
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> |
strcpy(fbuf2, fbuf); |
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> |
for (cp = fbuf2; *cp; cp++) |
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; |
271 |
> |
while (cp > fbuf2 && !ISDIRSEP(cp[-1])) |
272 |
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cp--; |
273 |
> |
strcpy(cp, RFTEMPLATE); |
274 |
> |
prvr = mktemp(fbuf2); |
275 |
> |
if (rename(fbuf, prvr) < 0) { |
276 |
> |
if (errno == ENOENT) { /* ghost file */ |
277 |
> |
sprintf(errmsg, |
278 |
> |
"new output file \"%s\"", |
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fbuf); |
280 |
> |
error(WARNING, errmsg); |
281 |
> |
prvr = NULL; |
282 |
> |
} else { /* serious error */ |
283 |
> |
sprintf(errmsg, |
284 |
> |
"cannot rename \"%s\" to \"%s\"", |
285 |
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fbuf, prvr); |
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> |
error(SYSTEM, errmsg); |
287 |
> |
} |
288 |
> |
} |
289 |
> |
} |
290 |
> |
} |
291 |
> |
npicts = 0; /* render sequence */ |
292 |
> |
do { |
293 |
> |
if (seq && nextview(stdin) == EOF) |
294 |
> |
break; |
295 |
> |
pctdone = 0.0; |
296 |
> |
if (pout != NULL) { |
297 |
> |
sprintf(fbuf, pout, seq); |
298 |
> |
if (file_exists(fbuf)) { |
299 |
> |
if (prvr != NULL || !strcmp(fbuf, pout)) { |
300 |
> |
sprintf(errmsg, |
301 |
> |
"output file \"%s\" exists", |
302 |
> |
fbuf); |
303 |
> |
error(USER, errmsg); |
304 |
> |
} |
305 |
> |
setview(&ourview); |
306 |
> |
continue; /* don't clobber */ |
307 |
> |
} |
308 |
> |
if (freopen(fbuf, "w", stdout) == NULL) { |
309 |
> |
sprintf(errmsg, |
310 |
> |
"cannot open output file \"%s\"", fbuf); |
311 |
> |
error(SYSTEM, errmsg); |
312 |
> |
} |
313 |
> |
SET_FILE_BINARY(stdout); |
314 |
> |
dupheader(); |
315 |
> |
} |
316 |
> |
hres = hresolu; vres = vresolu; pa = pixaspect; |
317 |
> |
if (prvr != NULL) { |
318 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
319 |
> |
sprintf(errmsg, |
320 |
> |
"cannot recover view parameters from \"%s\"", prvr); |
321 |
> |
error(WARNING, errmsg); |
322 |
> |
} else { |
323 |
> |
pa = 0.0; |
324 |
> |
hres = scanlen(&rs); |
325 |
> |
vres = numscans(&rs); |
326 |
> |
} |
327 |
> |
} |
328 |
> |
if ((cp = setview(&ourview)) != NULL) |
329 |
> |
error(USER, cp); |
330 |
> |
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
331 |
> |
if (seq) { |
332 |
> |
if (ralrm > 0) { |
333 |
> |
fprintf(stderr, "FRAME %d:", seq); |
334 |
> |
fprintview(&ourview, stderr); |
335 |
> |
putc('\n', stderr); |
336 |
> |
fflush(stderr); |
337 |
> |
} |
338 |
> |
printf("FRAME=%d\n", seq); |
339 |
> |
} |
340 |
> |
fputs(VIEWSTR, stdout); |
341 |
> |
fprintview(&ourview, stdout); |
342 |
> |
putchar('\n'); |
343 |
> |
if (pa < .99 || pa > 1.01) |
344 |
> |
fputaspect(pa, stdout); |
345 |
> |
fputnow(stdout); |
346 |
> |
fputformat(COLRFMT, stdout); |
347 |
> |
putchar('\n'); |
348 |
> |
if (zout != NULL) |
349 |
> |
sprintf(cp=fbuf, zout, seq); |
350 |
> |
else |
351 |
> |
cp = NULL; |
352 |
> |
render(cp, prvr); |
353 |
> |
prvr = NULL; |
354 |
> |
npicts++; |
355 |
> |
} while (seq++); |
356 |
> |
/* check that we did something */ |
357 |
> |
if (npicts == 0) |
358 |
> |
error(WARNING, "no output produced"); |
359 |
> |
} |
360 |
> |
|
361 |
> |
|
362 |
> |
static int |
363 |
> |
nextview( /* get next view from fp */ |
364 |
> |
FILE *fp |
365 |
> |
) |
366 |
> |
{ |
367 |
> |
char linebuf[256]; |
368 |
> |
|
369 |
> |
lastview = ourview; |
370 |
> |
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
371 |
> |
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
372 |
> |
return(0); |
373 |
> |
return(EOF); |
374 |
> |
} |
375 |
> |
|
376 |
> |
|
377 |
> |
static void |
378 |
> |
render( /* render the scene */ |
379 |
> |
char *zfile, |
380 |
> |
char *oldfile |
381 |
> |
) |
382 |
> |
{ |
383 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
384 |
|
float *zbar[MAXDIV+1]; /* z values */ |
385 |
|
char *sampdens; /* previous sample density */ |
390 |
|
COLOR *colptr; |
391 |
|
float *zptr; |
392 |
|
register int i; |
393 |
< |
/* check sampling */ |
394 |
< |
if (psample < 1) |
395 |
< |
psample = 1; |
396 |
< |
else if (psample > MAXDIV) { |
397 |
< |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
142 |
< |
psample, MAXDIV); |
143 |
< |
error(WARNING, errmsg); |
144 |
< |
psample = MAXDIV; |
393 |
> |
/* check for empty image */ |
394 |
> |
if (hres <= 0 || vres <= 0) { |
395 |
> |
error(WARNING, "empty output picture"); |
396 |
> |
fprtresolu(0, 0, stdout); |
397 |
> |
return; |
398 |
|
} |
399 |
|
/* allocate scanlines */ |
400 |
|
for (i = 0; i <= psample; i++) { |
401 |
< |
scanbar[i] = (COLOR *)malloc(hresolu*sizeof(COLOR)); |
401 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
402 |
|
if (scanbar[i] == NULL) |
403 |
|
goto memerr; |
404 |
|
} |
405 |
|
hstep = (psample*140+49)/99; /* quincunx sampling */ |
406 |
|
ystep = (psample*99+70)/140; |
407 |
|
if (hstep > 2) { |
408 |
< |
i = hresolu/hstep + 2; |
409 |
< |
if ((sampdens = malloc(i)) == NULL) |
408 |
> |
i = hres/hstep + 2; |
409 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
410 |
|
goto memerr; |
411 |
|
while (i--) |
412 |
|
sampdens[i] = hstep; |
413 |
|
} else |
414 |
|
sampdens = NULL; |
415 |
< |
/* open z file */ |
415 |
> |
/* open z-file */ |
416 |
|
if (zfile != NULL) { |
417 |
|
if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
418 |
< |
sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
418 |
> |
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
419 |
|
error(SYSTEM, errmsg); |
420 |
|
} |
421 |
+ |
SET_FD_BINARY(zfd); |
422 |
|
for (i = 0; i <= psample; i++) { |
423 |
< |
zbar[i] = (float *)malloc(hresolu*sizeof(float)); |
423 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
424 |
|
if (zbar[i] == NULL) |
425 |
|
goto memerr; |
426 |
|
} |
430 |
|
zbar[i] = NULL; |
431 |
|
} |
432 |
|
/* write out boundaries */ |
433 |
< |
fprtresolu(hresolu, vresolu, stdout); |
433 |
> |
fprtresolu(hres, vres, stdout); |
434 |
|
/* recover file and compute first */ |
435 |
|
i = salvage(oldfile); |
436 |
+ |
if (i >= vres) |
437 |
+ |
goto alldone; |
438 |
|
if (zfd != -1 && i > 0 && |
439 |
< |
lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
440 |
< |
error(SYSTEM, "z file seek error in render"); |
441 |
< |
pctdone = 100.0*i/vresolu; |
439 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
440 |
> |
error(SYSTEM, "z-file seek error in render"); |
441 |
> |
pctdone = 100.0*i/vres; |
442 |
|
if (ralrm > 0) /* report init stats */ |
443 |
< |
report(); |
444 |
< |
#ifndef BSD |
443 |
> |
report(0); |
444 |
> |
#ifdef SIGCONT |
445 |
|
else |
446 |
+ |
signal(SIGCONT, report); |
447 |
|
#endif |
448 |
< |
signal(SIGALRM, report); |
449 |
< |
ypos = vresolu-1 - i; |
450 |
< |
fillscanline(scanbar[0], zbar[0], sampdens, hresolu, ypos, hstep); |
448 |
> |
ypos = vres-1 - i; /* initialize sampling */ |
449 |
> |
if (directvis) |
450 |
> |
init_drawsources(psample); |
451 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
452 |
|
/* compute scanlines */ |
453 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
454 |
|
/* bottom adjust? */ |
464 |
|
zbar[0] = zptr; |
465 |
|
/* fill base line */ |
466 |
|
fillscanline(scanbar[0], zbar[0], sampdens, |
467 |
< |
hresolu, ypos, hstep); |
467 |
> |
hres, ypos, hstep); |
468 |
|
/* fill bar */ |
469 |
< |
fillscanbar(scanbar, zbar, hresolu, ypos, ystep); |
469 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
470 |
> |
if (directvis) /* add bitty sources */ |
471 |
> |
drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
472 |
|
/* write it out */ |
473 |
< |
#ifndef BSD |
474 |
< |
signal(SIGALRM, SIG_IGN); /* don't interrupt writes */ |
473 |
> |
#ifdef SIGCONT |
474 |
> |
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
475 |
|
#endif |
476 |
|
for (i = ystep; i > 0; i--) { |
477 |
|
if (zfd != -1 && write(zfd, (char *)zbar[i], |
478 |
< |
hresolu*sizeof(float)) |
479 |
< |
< hresolu*sizeof(float)) |
478 |
> |
hres*sizeof(float)) |
479 |
> |
< hres*sizeof(float)) |
480 |
|
goto writerr; |
481 |
< |
if (fwritescan(scanbar[i], hresolu, stdout) < 0) |
481 |
> |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
482 |
|
goto writerr; |
483 |
|
} |
484 |
|
if (fflush(stdout) == EOF) |
485 |
|
goto writerr; |
486 |
|
/* record progress */ |
487 |
< |
pctdone = 100.0*(vresolu-1-ypos)/vresolu; |
488 |
< |
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
489 |
< |
report(); |
490 |
< |
#ifndef BSD |
487 |
> |
pctdone = 100.0*(vres-1-ypos)/vres; |
488 |
> |
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
489 |
> |
report(0); |
490 |
> |
#ifdef SIGCONT |
491 |
|
else |
492 |
< |
signal(SIGALRM, report); |
492 |
> |
signal(SIGCONT, report); |
493 |
|
#endif |
494 |
|
} |
495 |
|
/* clean up */ |
496 |
+ |
#ifdef SIGCONT |
497 |
+ |
signal(SIGCONT, SIG_IGN); |
498 |
+ |
#endif |
499 |
+ |
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
500 |
+ |
< hres*sizeof(float)) |
501 |
+ |
goto writerr; |
502 |
+ |
fwritescan(scanbar[0], hres, stdout); |
503 |
+ |
if (fflush(stdout) == EOF) |
504 |
+ |
goto writerr; |
505 |
+ |
alldone: |
506 |
|
if (zfd != -1) { |
237 |
– |
if (write(zfd, (char *)zbar[0], hresolu*sizeof(float)) |
238 |
– |
< hresolu*sizeof(float)) |
239 |
– |
goto writerr; |
507 |
|
if (close(zfd) == -1) |
508 |
|
goto writerr; |
509 |
|
for (i = 0; i <= psample; i++) |
510 |
< |
free((char *)zbar[i]); |
510 |
> |
free((void *)zbar[i]); |
511 |
|
} |
245 |
– |
fwritescan(scanbar[0], hresolu, stdout); |
246 |
– |
if (fflush(stdout) == EOF) |
247 |
– |
goto writerr; |
512 |
|
for (i = 0; i <= psample; i++) |
513 |
< |
free((char *)scanbar[i]); |
513 |
> |
free((void *)scanbar[i]); |
514 |
|
if (sampdens != NULL) |
515 |
|
free(sampdens); |
516 |
|
pctdone = 100.0; |
517 |
+ |
if (ralrm > 0) |
518 |
+ |
report(0); |
519 |
+ |
#ifdef SIGCONT |
520 |
+ |
signal(SIGCONT, SIG_DFL); |
521 |
+ |
#endif |
522 |
|
return; |
523 |
|
writerr: |
524 |
|
error(SYSTEM, "write error in render"); |
527 |
|
} |
528 |
|
|
529 |
|
|
530 |
< |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
531 |
< |
register COLOR *scanline; |
532 |
< |
register float *zline; |
533 |
< |
register char *sd; |
534 |
< |
int xres, y, xstep; |
530 |
> |
static void |
531 |
> |
fillscanline( /* fill scan at y */ |
532 |
> |
register COLOR *scanline, |
533 |
> |
register float *zline, |
534 |
> |
register char *sd, |
535 |
> |
int xres, |
536 |
> |
int y, |
537 |
> |
int xstep |
538 |
> |
) |
539 |
|
{ |
540 |
|
static int nc = 0; /* number of calls */ |
541 |
|
int bl = xstep, b = xstep; |
542 |
< |
double z; |
542 |
> |
double z; |
543 |
|
register int i; |
544 |
< |
|
544 |
> |
|
545 |
|
z = pixvalue(scanline[0], 0, y); |
546 |
|
if (zline) zline[0] = z; |
547 |
|
/* zig-zag start for quincunx pattern */ |
557 |
|
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
558 |
|
else |
559 |
|
b = fillsample(scanline+i-xstep, |
560 |
< |
zline ? zline+i-xstep : NULL, |
560 |
> |
zline ? zline+i-xstep : (float *)NULL, |
561 |
|
i-xstep, y, xstep, 0, b/2); |
562 |
|
if (sd) *sd++ = nc & 1 ? bl : b; |
563 |
|
bl = b; |
566 |
|
} |
567 |
|
|
568 |
|
|
569 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
570 |
< |
register COLOR *scanbar[]; |
571 |
< |
register float *zbar[]; |
572 |
< |
int xres, y, ysize; |
569 |
> |
static void |
570 |
> |
fillscanbar( /* fill interior */ |
571 |
> |
register COLOR *scanbar[], |
572 |
> |
register float *zbar[], |
573 |
> |
int xres, |
574 |
> |
int y, |
575 |
> |
int ysize |
576 |
> |
) |
577 |
|
{ |
578 |
|
COLOR vline[MAXDIV+1]; |
579 |
|
float zline[MAXDIV+1]; |
580 |
|
int b = ysize; |
581 |
|
register int i, j; |
582 |
< |
|
582 |
> |
|
583 |
|
for (i = 0; i < xres; i++) { |
307 |
– |
|
584 |
|
copycolor(vline[0], scanbar[0][i]); |
585 |
|
copycolor(vline[ysize], scanbar[ysize][i]); |
586 |
|
if (zbar[0]) { |
587 |
|
zline[0] = zbar[0][i]; |
588 |
|
zline[ysize] = zbar[ysize][i]; |
589 |
|
} |
590 |
< |
|
315 |
< |
b = fillsample(vline, zbar[0] ? zline : NULL, |
590 |
> |
b = fillsample(vline, zbar[0] ? zline : (float *)NULL, |
591 |
|
i, y, 0, ysize, b/2); |
592 |
< |
|
592 |
> |
|
593 |
|
for (j = 1; j < ysize; j++) |
594 |
|
copycolor(scanbar[j][i], vline[j]); |
595 |
|
if (zbar[0]) |
599 |
|
} |
600 |
|
|
601 |
|
|
602 |
< |
int |
603 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
604 |
< |
register COLOR *colline; |
605 |
< |
register float *zline; |
606 |
< |
int x, y; |
607 |
< |
int xlen, ylen; |
608 |
< |
int b; |
602 |
> |
static int |
603 |
> |
fillsample( /* fill interior points */ |
604 |
> |
register COLOR *colline, |
605 |
> |
register float *zline, |
606 |
> |
int x, |
607 |
> |
int y, |
608 |
> |
int xlen, |
609 |
> |
int ylen, |
610 |
> |
int b |
611 |
> |
) |
612 |
|
{ |
613 |
< |
extern double fabs(); |
614 |
< |
double ratio; |
337 |
< |
double z; |
613 |
> |
double ratio; |
614 |
> |
double z; |
615 |
|
COLOR ctmp; |
616 |
|
int ncut; |
617 |
|
register int len; |
618 |
< |
|
618 |
> |
|
619 |
|
if (xlen > 0) /* x or y length is zero */ |
620 |
|
len = xlen; |
621 |
|
else |
622 |
|
len = ylen; |
623 |
< |
|
623 |
> |
|
624 |
|
if (len <= 1) /* limit recursion */ |
625 |
|
return(0); |
626 |
< |
|
627 |
< |
if (b > 0 |
628 |
< |
|| (zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
626 |
> |
|
627 |
> |
if (b > 0 || |
628 |
> |
(zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
629 |
|
|| bigdiff(colline[0], colline[len], maxdiff)) { |
630 |
< |
|
630 |
> |
|
631 |
|
z = pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
632 |
|
if (zline) zline[len>>1] = z; |
633 |
|
ncut = 1; |
357 |
– |
|
634 |
|
} else { /* interpolate */ |
359 |
– |
|
635 |
|
copycolor(colline[len>>1], colline[len]); |
636 |
|
ratio = (double)(len>>1) / len; |
637 |
|
scalecolor(colline[len>>1], ratio); |
645 |
|
} |
646 |
|
/* recurse */ |
647 |
|
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
648 |
< |
|
649 |
< |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
648 |
> |
|
649 |
> |
ncut += fillsample(colline+(len>>1), |
650 |
> |
zline ? zline+(len>>1) : (float *)NULL, |
651 |
|
x+(xlen>>1), y+(ylen>>1), |
652 |
|
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
653 |
|
|
655 |
|
} |
656 |
|
|
657 |
|
|
658 |
< |
double |
659 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
660 |
< |
COLOR col; /* returned color */ |
661 |
< |
int x, y; /* pixel position */ |
658 |
> |
static double |
659 |
> |
pixvalue( /* compute pixel value */ |
660 |
> |
COLOR col, /* returned color */ |
661 |
> |
int x, /* pixel position */ |
662 |
> |
int y |
663 |
> |
) |
664 |
|
{ |
665 |
< |
static RAY thisray; |
666 |
< |
|
667 |
< |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
668 |
< |
(x+pixjitter())/hresolu, (y+pixjitter())/vresolu) < 0) { |
665 |
> |
RAY thisray; |
666 |
> |
FVECT lorg, ldir; |
667 |
> |
double hpos, vpos, vdist, lmax; |
668 |
> |
register int i; |
669 |
> |
/* compute view ray */ |
670 |
> |
hpos = (x+pixjitter())/hres; |
671 |
> |
vpos = (y+pixjitter())/vres; |
672 |
> |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
673 |
> |
&ourview, hpos, vpos)) < -FTINY) { |
674 |
|
setcolor(col, 0.0, 0.0, 0.0); |
675 |
|
return(0.0); |
676 |
|
} |
677 |
+ |
vdist = ourview.vdist; |
678 |
|
|
679 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
679 |
> |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
680 |
|
|
681 |
< |
samplendx = pixnumber(x,y,hresolu,vresolu); /* set pixel index */ |
681 |
> |
/* optional motion blur */ |
682 |
> |
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
683 |
> |
&lastview, hpos, vpos)) >= -FTINY) { |
684 |
> |
register double d = mblur*(.5-urand(281+samplendx)); |
685 |
|
|
686 |
+ |
thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
687 |
+ |
for (i = 3; i--; ) { |
688 |
+ |
thisray.rorg[i] = (1.-d)*thisray.rorg[i] + d*lorg[i]; |
689 |
+ |
thisray.rdir[i] = (1.-d)*thisray.rdir[i] + d*ldir[i]; |
690 |
+ |
} |
691 |
+ |
if (normalize(thisray.rdir) == 0.0) |
692 |
+ |
return(0.0); |
693 |
+ |
vdist = (1.-d)*vdist + d*lastview.vdist; |
694 |
+ |
} |
695 |
+ |
/* optional depth-of-field */ |
696 |
+ |
if (dblur > FTINY && vdist > FTINY) { |
697 |
+ |
double vc, df[2]; |
698 |
+ |
df[0] = PI/4.*dblur*(.5 - frandom())/sqrt(ourview.hn2); |
699 |
+ |
df[1] = PI/4.*dblur*(.5 - frandom())/sqrt(ourview.vn2); |
700 |
+ |
for (i = 3; i--; ) { |
701 |
+ |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
702 |
+ |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
703 |
+ |
df[1]*ourview.vvec[i] ; |
704 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
705 |
+ |
} |
706 |
+ |
if (normalize(thisray.rdir) == 0.0) |
707 |
+ |
return(0.0); |
708 |
+ |
} |
709 |
+ |
|
710 |
+ |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
711 |
+ |
|
712 |
|
rayvalue(&thisray); /* trace ray */ |
713 |
|
|
714 |
|
copycolor(col, thisray.rcol); /* return color */ |
715 |
< |
|
715 |
> |
|
716 |
|
return(thisray.rt); /* return distance */ |
717 |
|
} |
718 |
|
|
719 |
|
|
720 |
< |
int |
721 |
< |
salvage(oldfile) /* salvage scanlines from killed program */ |
722 |
< |
char *oldfile; |
720 |
> |
static int |
721 |
> |
salvage( /* salvage scanlines from killed program */ |
722 |
> |
char *oldfile |
723 |
> |
) |
724 |
|
{ |
725 |
|
COLR *scanline; |
726 |
|
FILE *fp; |
727 |
|
int x, y; |
728 |
|
|
729 |
|
if (oldfile == NULL) |
730 |
< |
return(0); |
731 |
< |
|
730 |
> |
goto gotzip; |
731 |
> |
|
732 |
|
if ((fp = fopen(oldfile, "r")) == NULL) { |
733 |
|
sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
734 |
|
error(WARNING, errmsg); |
735 |
< |
return(0); |
735 |
> |
goto gotzip; |
736 |
|
} |
737 |
+ |
SET_FILE_BINARY(fp); |
738 |
|
/* discard header */ |
739 |
< |
getheader(fp, NULL); |
739 |
> |
getheader(fp, NULL, NULL); |
740 |
|
/* get picture size */ |
741 |
|
if (!fscnresolu(&x, &y, fp)) { |
742 |
< |
sprintf(errmsg, "bad recover file \"%s\"", oldfile); |
742 |
> |
sprintf(errmsg, "bad recover file \"%s\" - not removed", |
743 |
> |
oldfile); |
744 |
|
error(WARNING, errmsg); |
745 |
|
fclose(fp); |
746 |
< |
return(0); |
746 |
> |
goto gotzip; |
747 |
|
} |
748 |
|
|
749 |
< |
if (x != hresolu || y != vresolu) { |
749 |
> |
if (x != hres || y != vres) { |
750 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
751 |
|
oldfile); |
752 |
|
error(USER, errmsg); |
753 |
|
} |
754 |
|
|
755 |
< |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
755 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
756 |
|
if (scanline == NULL) |
757 |
|
error(SYSTEM, "out of memory in salvage"); |
758 |
< |
for (y = 0; y < vresolu; y++) { |
759 |
< |
if (freadcolrs(scanline, hresolu, fp) < 0) |
758 |
> |
for (y = 0; y < vres; y++) { |
759 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
760 |
|
break; |
761 |
< |
if (fwritecolrs(scanline, hresolu, stdout) < 0) |
761 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
762 |
|
goto writerr; |
763 |
|
} |
764 |
|
if (fflush(stdout) == EOF) |
765 |
|
goto writerr; |
766 |
< |
free((char *)scanline); |
766 |
> |
free((void *)scanline); |
767 |
|
fclose(fp); |
768 |
|
unlink(oldfile); |
769 |
|
return(y); |
770 |
+ |
gotzip: |
771 |
+ |
if (fflush(stdout) == EOF) |
772 |
+ |
error(SYSTEM, "error writing picture header"); |
773 |
+ |
return(0); |
774 |
|
writerr: |
775 |
< |
error(SYSTEM, "write error in salvage"); |
775 |
> |
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
776 |
> |
error(SYSTEM, errmsg); |
777 |
> |
return -1; /* pro forma return */ |
778 |
|
} |
779 |
|
|
780 |
< |
|
781 |
< |
int |
782 |
< |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
783 |
< |
register int x, y; |
784 |
< |
int xres, yres; |
780 |
> |
static int |
781 |
> |
pixnumber( /* compute pixel index (brushed) */ |
782 |
> |
register int x, |
783 |
> |
register int y, |
784 |
> |
int xres, |
785 |
> |
int yres |
786 |
> |
) |
787 |
|
{ |
788 |
|
x -= y; |
789 |
|
while (x < 0) |