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/* Copyright (c) 1992 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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|
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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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#include "paths.h" |
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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 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 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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int rand_samp = 0; /* pure Monte Carlo sampling? */ |
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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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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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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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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 maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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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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int ambvwt = 0; /* initial weight for 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 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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|
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#ifdef MSDOS |
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int ralrm = 60; /* seconds between reports */ |
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#else |
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int ralrm = 0; /* seconds between reports */ |
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#endif |
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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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#define RFTEMPLATE "rfXXXXXX" |
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#define HFTEMPLATE TEMPLATE |
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//double pixvalue(); |
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|
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static char *hfname = NULL; /* header file name */ |
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static FILE *hfp = NULL; /* header file pointer */ |
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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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static int hres, vres; /* resolution for this frame */ |
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|
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extern char *mktemp(); |
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double pixvalue(); |
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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; |
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{ |
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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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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) /* report status */ |
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report(); |
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if (hfname != NULL) { /* delete header file */ |
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if (hfp != NULL) |
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fclose(hfp); |
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unlink(hfname); |
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} |
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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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< |
openheader() /* save standard output to header file */ |
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{ |
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hfname = mktemp(HFTEMPLATE); |
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< |
if (freopen(hfname, "w", stdout) == NULL) { |
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sprintf(errmsg, "cannot open header file \"%s\"", hfname); |
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error(SYSTEM, errmsg); |
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} |
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} |
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|
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|
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dupheader() /* repeat header on standard output */ |
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{ |
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register int c; |
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|
156 |
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if (hfp == NULL) { |
157 |
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if ((hfp = fopen(hfname, "r")) == NULL) |
158 |
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error(SYSTEM, "error reopening header file"); |
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#ifdef MSDOS |
160 |
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setmode(fileno(hfp), O_BINARY); |
161 |
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#endif |
162 |
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} else if (fseek(hfp, 0L, 0) < 0) |
163 |
< |
error(SYSTEM, "seek error on header file"); |
164 |
< |
while ((c = getc(hfp)) != EOF) |
165 |
< |
putchar(c); |
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< |
} |
167 |
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|
168 |
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|
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rpict(seq, pout, zout, prvr) /* generate image(s) */ |
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int seq; |
171 |
< |
char *pout, *zout, *prvr; |
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> |
extern void |
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> |
rpict( /* generate image(s) */ |
221 |
> |
int seq, |
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> |
char *pout, |
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char *zout, |
224 |
> |
char *prvr |
225 |
> |
) |
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/* |
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* If seq is greater than zero, then we will render a sequence of |
228 |
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* images based on view parameter strings read from the standard input. |
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* sequenced file naming. |
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*/ |
237 |
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{ |
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extern char *rindex(), *strncpy(), *strcat(); |
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char fbuf[128], fbuf2[128]; |
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int npicts; |
240 |
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register char *cp; |
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RESOLU rs; |
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double pa; |
261 |
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for ( ; seq < rn; seq++) |
262 |
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if (nextview(stdin) == EOF) |
263 |
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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 */ |
266 |
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} |
267 |
< |
if (pout != NULL & prvr != NULL) { |
267 |
> |
if ((pout != NULL) & (prvr != NULL)) { |
268 |
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sprintf(fbuf, pout, seq); |
269 |
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if (!strcmp(prvr, fbuf)) { /* rename */ |
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strcpy(fbuf2, fbuf); |
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cp--; |
275 |
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strcpy(cp, RFTEMPLATE); |
276 |
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prvr = mktemp(fbuf2); |
277 |
< |
if (rename(fbuf, prvr) < 0 && errno != ENOENT) { |
278 |
< |
sprintf(errmsg, |
277 |
> |
if (rename(fbuf, prvr) < 0) { |
278 |
> |
if (errno == ENOENT) { /* ghost file */ |
279 |
> |
sprintf(errmsg, |
280 |
> |
"new output file \"%s\"", |
281 |
> |
fbuf); |
282 |
> |
error(WARNING, errmsg); |
283 |
> |
prvr = NULL; |
284 |
> |
} else { /* serious error */ |
285 |
> |
sprintf(errmsg, |
286 |
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"cannot rename \"%s\" to \"%s\"", |
287 |
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fbuf, prvr); |
288 |
< |
error(SYSTEM, errmsg); |
288 |
> |
error(SYSTEM, errmsg); |
289 |
> |
} |
290 |
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} |
291 |
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} |
292 |
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} |
293 |
< |
/* render sequence */ |
293 |
> |
npicts = 0; /* render sequence */ |
294 |
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do { |
295 |
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if (seq && nextview(stdin) == EOF) |
296 |
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break; |
297 |
+ |
pctdone = 0.0; |
298 |
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if (pout != NULL) { |
299 |
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sprintf(fbuf, pout, seq); |
300 |
+ |
if (file_exists(fbuf)) { |
301 |
+ |
if (prvr != NULL || !strcmp(fbuf, pout)) { |
302 |
+ |
sprintf(errmsg, |
303 |
+ |
"output file \"%s\" exists", |
304 |
+ |
fbuf); |
305 |
+ |
error(USER, errmsg); |
306 |
+ |
} |
307 |
+ |
setview(&ourview); |
308 |
+ |
continue; /* don't clobber */ |
309 |
+ |
} |
310 |
|
if (freopen(fbuf, "w", stdout) == NULL) { |
311 |
|
sprintf(errmsg, |
312 |
|
"cannot open output file \"%s\"", fbuf); |
313 |
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error(SYSTEM, errmsg); |
314 |
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} |
315 |
< |
#ifdef MSDOS |
242 |
< |
setmode(fileno(stdout), O_BINARY); |
243 |
< |
#endif |
315 |
> |
SET_FILE_BINARY(stdout); |
316 |
|
dupheader(); |
317 |
|
} |
318 |
|
hres = hresolu; vres = vresolu; pa = pixaspect; |
319 |
< |
if (prvr != NULL) |
320 |
< |
if (viewfile(prvr, &ourview, &rs) <= 0 |
249 |
< |
|| rs.or != PIXSTANDARD) { |
319 |
> |
if (prvr != NULL) { |
320 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
321 |
|
sprintf(errmsg, |
322 |
|
"cannot recover view parameters from \"%s\"", prvr); |
323 |
|
error(WARNING, errmsg); |
326 |
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hres = scanlen(&rs); |
327 |
|
vres = numscans(&rs); |
328 |
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} |
329 |
+ |
} |
330 |
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if ((cp = setview(&ourview)) != NULL) |
331 |
|
error(USER, cp); |
332 |
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normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
344 |
|
putchar('\n'); |
345 |
|
if (pa < .99 || pa > 1.01) |
346 |
|
fputaspect(pa, stdout); |
347 |
+ |
fputnow(stdout); |
348 |
|
fputformat(COLRFMT, stdout); |
349 |
|
putchar('\n'); |
350 |
|
if (zout != NULL) |
353 |
|
cp = NULL; |
354 |
|
render(cp, prvr); |
355 |
|
prvr = NULL; |
356 |
+ |
npicts++; |
357 |
|
} while (seq++); |
358 |
+ |
/* check that we did something */ |
359 |
+ |
if (npicts == 0) |
360 |
+ |
error(WARNING, "no output produced"); |
361 |
|
} |
362 |
|
|
363 |
|
|
364 |
< |
nextview(fp) /* get next view from fp */ |
365 |
< |
FILE *fp; |
364 |
> |
static int |
365 |
> |
nextview( /* get next view from fp */ |
366 |
> |
FILE *fp |
367 |
> |
) |
368 |
|
{ |
369 |
|
char linebuf[256]; |
370 |
|
|
371 |
+ |
lastview = ourview; |
372 |
|
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
373 |
|
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
374 |
|
return(0); |
376 |
|
} |
377 |
|
|
378 |
|
|
379 |
< |
render(zfile, oldfile) /* render the scene */ |
380 |
< |
char *zfile, *oldfile; |
379 |
> |
static void |
380 |
> |
render( /* render the scene */ |
381 |
> |
char *zfile, |
382 |
> |
char *oldfile |
383 |
> |
) |
384 |
|
{ |
302 |
– |
extern long lseek(); |
385 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
386 |
|
float *zbar[MAXDIV+1]; /* z values */ |
387 |
|
char *sampdens; /* previous sample density */ |
392 |
|
COLOR *colptr; |
393 |
|
float *zptr; |
394 |
|
register int i; |
395 |
+ |
/* check for empty image */ |
396 |
+ |
if (hres <= 0 || vres <= 0) { |
397 |
+ |
error(WARNING, "empty output picture"); |
398 |
+ |
fprtresolu(0, 0, stdout); |
399 |
+ |
return; |
400 |
+ |
} |
401 |
|
/* allocate scanlines */ |
402 |
|
for (i = 0; i <= psample; i++) { |
403 |
|
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
408 |
|
ystep = (psample*99+70)/140; |
409 |
|
if (hstep > 2) { |
410 |
|
i = hres/hstep + 2; |
411 |
< |
if ((sampdens = malloc(i)) == NULL) |
411 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
412 |
|
goto memerr; |
413 |
|
while (i--) |
414 |
|
sampdens[i] = hstep; |
415 |
|
} else |
416 |
|
sampdens = NULL; |
417 |
< |
/* open z file */ |
417 |
> |
/* open z-file */ |
418 |
|
if (zfile != NULL) { |
419 |
|
if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
420 |
< |
sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
420 |
> |
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
421 |
|
error(SYSTEM, errmsg); |
422 |
|
} |
423 |
< |
#ifdef MSDOS |
336 |
< |
setmode(zfd, O_BINARY); |
337 |
< |
#endif |
423 |
> |
SET_FD_BINARY(zfd); |
424 |
|
for (i = 0; i <= psample; i++) { |
425 |
|
zbar[i] = (float *)malloc(hres*sizeof(float)); |
426 |
|
if (zbar[i] == NULL) |
435 |
|
fprtresolu(hres, vres, stdout); |
436 |
|
/* recover file and compute first */ |
437 |
|
i = salvage(oldfile); |
438 |
+ |
if (i >= vres) |
439 |
+ |
goto alldone; |
440 |
|
if (zfd != -1 && i > 0 && |
441 |
< |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
442 |
< |
error(SYSTEM, "z file seek error in render"); |
441 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
442 |
> |
error(SYSTEM, "z-file seek error in render"); |
443 |
|
pctdone = 100.0*i/vres; |
444 |
|
if (ralrm > 0) /* report init stats */ |
445 |
< |
report(); |
446 |
< |
#ifndef BSD |
445 |
> |
report(0); |
446 |
> |
#ifdef SIGCONT |
447 |
|
else |
448 |
+ |
signal(SIGCONT, report); |
449 |
|
#endif |
450 |
< |
signal(SIGALRM, report); |
451 |
< |
ypos = vres-1 - i; |
450 |
> |
ypos = vres-1 - i; /* initialize sampling */ |
451 |
> |
if (directvis) |
452 |
> |
init_drawsources(psample); |
453 |
|
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
454 |
|
/* compute scanlines */ |
455 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
469 |
|
hres, ypos, hstep); |
470 |
|
/* fill bar */ |
471 |
|
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
472 |
+ |
if (directvis) /* add bitty sources */ |
473 |
+ |
drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
474 |
|
/* write it out */ |
475 |
< |
#ifndef BSD |
476 |
< |
signal(SIGALRM, SIG_IGN); /* don't interrupt writes */ |
475 |
> |
#ifdef SIGCONT |
476 |
> |
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
477 |
|
#endif |
478 |
|
for (i = ystep; i > 0; i--) { |
479 |
|
if (zfd != -1 && write(zfd, (char *)zbar[i], |
487 |
|
goto writerr; |
488 |
|
/* record progress */ |
489 |
|
pctdone = 100.0*(vres-1-ypos)/vres; |
490 |
< |
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
491 |
< |
report(); |
492 |
< |
#ifndef BSD |
490 |
> |
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
491 |
> |
report(0); |
492 |
> |
#ifdef SIGCONT |
493 |
|
else |
494 |
< |
signal(SIGALRM, report); |
494 |
> |
signal(SIGCONT, report); |
495 |
|
#endif |
496 |
|
} |
497 |
|
/* clean up */ |
498 |
< |
signal(SIGALRM, SIG_IGN); |
499 |
< |
if (zfd != -1) { |
500 |
< |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
498 |
> |
#ifdef SIGCONT |
499 |
> |
signal(SIGCONT, SIG_IGN); |
500 |
> |
#endif |
501 |
> |
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
502 |
|
< hres*sizeof(float)) |
503 |
< |
goto writerr; |
503 |
> |
goto writerr; |
504 |
> |
fwritescan(scanbar[0], hres, stdout); |
505 |
> |
if (fflush(stdout) == EOF) |
506 |
> |
goto writerr; |
507 |
> |
alldone: |
508 |
> |
if (zfd != -1) { |
509 |
|
if (close(zfd) == -1) |
510 |
|
goto writerr; |
511 |
|
for (i = 0; i <= psample; i++) |
512 |
< |
free((char *)zbar[i]); |
512 |
> |
free((void *)zbar[i]); |
513 |
|
} |
416 |
– |
fwritescan(scanbar[0], hres, stdout); |
417 |
– |
if (fflush(stdout) == EOF) |
418 |
– |
goto writerr; |
514 |
|
for (i = 0; i <= psample; i++) |
515 |
< |
free((char *)scanbar[i]); |
515 |
> |
free((void *)scanbar[i]); |
516 |
|
if (sampdens != NULL) |
517 |
|
free(sampdens); |
518 |
|
pctdone = 100.0; |
519 |
|
if (ralrm > 0) |
520 |
< |
report(); |
520 |
> |
report(0); |
521 |
> |
#ifdef SIGCONT |
522 |
> |
signal(SIGCONT, SIG_DFL); |
523 |
> |
#endif |
524 |
|
return; |
525 |
|
writerr: |
526 |
|
error(SYSTEM, "write error in render"); |
529 |
|
} |
530 |
|
|
531 |
|
|
532 |
< |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
533 |
< |
register COLOR *scanline; |
534 |
< |
register float *zline; |
535 |
< |
register char *sd; |
536 |
< |
int xres, y, xstep; |
532 |
> |
static void |
533 |
> |
fillscanline( /* fill scan at y */ |
534 |
> |
register COLOR *scanline, |
535 |
> |
register float *zline, |
536 |
> |
register char *sd, |
537 |
> |
int xres, |
538 |
> |
int y, |
539 |
> |
int xstep |
540 |
> |
) |
541 |
|
{ |
542 |
|
static int nc = 0; /* number of calls */ |
543 |
|
int bl = xstep, b = xstep; |
544 |
|
double z; |
545 |
|
register int i; |
546 |
< |
|
546 |
> |
|
547 |
|
z = pixvalue(scanline[0], 0, y); |
548 |
|
if (zline) zline[0] = z; |
549 |
|
/* zig-zag start for quincunx pattern */ |
559 |
|
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
560 |
|
else |
561 |
|
b = fillsample(scanline+i-xstep, |
562 |
< |
zline ? zline+i-xstep : NULL, |
562 |
> |
zline ? zline+i-xstep : (float *)NULL, |
563 |
|
i-xstep, y, xstep, 0, b/2); |
564 |
|
if (sd) *sd++ = nc & 1 ? bl : b; |
565 |
|
bl = b; |
568 |
|
} |
569 |
|
|
570 |
|
|
571 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
572 |
< |
register COLOR *scanbar[]; |
573 |
< |
register float *zbar[]; |
574 |
< |
int xres, y, ysize; |
571 |
> |
static void |
572 |
> |
fillscanbar( /* fill interior */ |
573 |
> |
register COLOR *scanbar[], |
574 |
> |
register float *zbar[], |
575 |
> |
int xres, |
576 |
> |
int y, |
577 |
> |
int ysize |
578 |
> |
) |
579 |
|
{ |
580 |
|
COLOR vline[MAXDIV+1]; |
581 |
|
float zline[MAXDIV+1]; |
582 |
|
int b = ysize; |
583 |
|
register int i, j; |
584 |
< |
|
584 |
> |
|
585 |
|
for (i = 0; i < xres; i++) { |
480 |
– |
|
586 |
|
copycolor(vline[0], scanbar[0][i]); |
587 |
|
copycolor(vline[ysize], scanbar[ysize][i]); |
588 |
|
if (zbar[0]) { |
589 |
|
zline[0] = zbar[0][i]; |
590 |
|
zline[ysize] = zbar[ysize][i]; |
591 |
|
} |
592 |
< |
|
488 |
< |
b = fillsample(vline, zbar[0] ? zline : NULL, |
592 |
> |
b = fillsample(vline, zbar[0] ? zline : (float *)NULL, |
593 |
|
i, y, 0, ysize, b/2); |
594 |
< |
|
594 |
> |
|
595 |
|
for (j = 1; j < ysize; j++) |
596 |
|
copycolor(scanbar[j][i], vline[j]); |
597 |
|
if (zbar[0]) |
601 |
|
} |
602 |
|
|
603 |
|
|
604 |
< |
int |
605 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
606 |
< |
register COLOR *colline; |
607 |
< |
register float *zline; |
608 |
< |
int x, y; |
609 |
< |
int xlen, ylen; |
610 |
< |
int b; |
604 |
> |
static int |
605 |
> |
fillsample( /* fill interior points */ |
606 |
> |
register COLOR *colline, |
607 |
> |
register float *zline, |
608 |
> |
int x, |
609 |
> |
int y, |
610 |
> |
int xlen, |
611 |
> |
int ylen, |
612 |
> |
int b |
613 |
> |
) |
614 |
|
{ |
615 |
|
double ratio; |
616 |
|
double z; |
617 |
|
COLOR ctmp; |
618 |
|
int ncut; |
619 |
|
register int len; |
620 |
< |
|
620 |
> |
|
621 |
|
if (xlen > 0) /* x or y length is zero */ |
622 |
|
len = xlen; |
623 |
|
else |
624 |
|
len = ylen; |
625 |
< |
|
625 |
> |
|
626 |
|
if (len <= 1) /* limit recursion */ |
627 |
|
return(0); |
628 |
< |
|
629 |
< |
if (b > 0 |
630 |
< |
|| (zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
628 |
> |
|
629 |
> |
if (b > 0 || |
630 |
> |
(zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
631 |
|
|| bigdiff(colline[0], colline[len], maxdiff)) { |
632 |
< |
|
632 |
> |
|
633 |
|
z = pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
634 |
|
if (zline) zline[len>>1] = z; |
635 |
|
ncut = 1; |
529 |
– |
|
636 |
|
} else { /* interpolate */ |
531 |
– |
|
637 |
|
copycolor(colline[len>>1], colline[len]); |
638 |
|
ratio = (double)(len>>1) / len; |
639 |
|
scalecolor(colline[len>>1], ratio); |
647 |
|
} |
648 |
|
/* recurse */ |
649 |
|
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
650 |
< |
|
651 |
< |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
650 |
> |
|
651 |
> |
ncut += fillsample(colline+(len>>1), |
652 |
> |
zline ? zline+(len>>1) : (float *)NULL, |
653 |
|
x+(xlen>>1), y+(ylen>>1), |
654 |
|
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
655 |
|
|
657 |
|
} |
658 |
|
|
659 |
|
|
660 |
< |
double |
661 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
662 |
< |
COLOR col; /* returned color */ |
663 |
< |
int x, y; /* pixel position */ |
660 |
> |
static double |
661 |
> |
pixvalue( /* compute pixel value */ |
662 |
> |
COLOR col, /* returned color */ |
663 |
> |
int x, /* pixel position */ |
664 |
> |
int y |
665 |
> |
) |
666 |
|
{ |
667 |
< |
static RAY thisray; |
668 |
< |
|
669 |
< |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
670 |
< |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
667 |
> |
RAY thisray; |
668 |
> |
FVECT lorg, ldir; |
669 |
> |
double hpos, vpos, vdist, lmax; |
670 |
> |
register int i; |
671 |
> |
/* compute view ray */ |
672 |
> |
hpos = (x+pixjitter())/hres; |
673 |
> |
vpos = (y+pixjitter())/vres; |
674 |
> |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
675 |
> |
&ourview, hpos, vpos)) < -FTINY) { |
676 |
|
setcolor(col, 0.0, 0.0, 0.0); |
677 |
|
return(0.0); |
678 |
|
} |
679 |
+ |
vdist = ourview.vdist; |
680 |
+ |
/* set pixel index */ |
681 |
+ |
samplendx = pixnumber(x,y,hres,vres); |
682 |
+ |
/* optional motion blur */ |
683 |
+ |
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
684 |
+ |
&lastview, hpos, vpos)) >= -FTINY) { |
685 |
+ |
register double d = mblur*(.5-urand(281+samplendx)); |
686 |
|
|
687 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
687 |
> |
thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
688 |
> |
for (i = 3; i--; ) { |
689 |
> |
thisray.rorg[i] = (1.-d)*thisray.rorg[i] + d*lorg[i]; |
690 |
> |
thisray.rdir[i] = (1.-d)*thisray.rdir[i] + d*ldir[i]; |
691 |
> |
} |
692 |
> |
if (normalize(thisray.rdir) == 0.0) |
693 |
> |
return(0.0); |
694 |
> |
vdist = (1.-d)*vdist + d*lastview.vdist; |
695 |
> |
} |
696 |
> |
/* optional depth-of-field */ |
697 |
> |
if (dblur > FTINY && vdist > FTINY) { |
698 |
> |
double vc, dfh, dfv; |
699 |
> |
/* PI/4. square/circle conv. */ |
700 |
> |
dfh = PI/4.*dblur*(.5 - frandom()); |
701 |
> |
dfv = PI/4.*dblur*(.5 - frandom()); |
702 |
> |
if (ourview.type == VT_PER || ourview.type == VT_PAR) { |
703 |
> |
dfh /= sqrt(ourview.hn2); |
704 |
> |
dfv /= sqrt(ourview.vn2); |
705 |
> |
for (i = 3; i--; ) { |
706 |
> |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
707 |
> |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
708 |
> |
dfv*ourview.vvec[i] ; |
709 |
> |
thisray.rdir[i] = vc - thisray.rorg[i]; |
710 |
> |
} |
711 |
> |
} else { /* non-standard view case */ |
712 |
> |
double dfd = PI/4.*dblur*(.5 - frandom()); |
713 |
> |
if (ourview.type != VT_ANG) { |
714 |
> |
if (ourview.type != VT_CYL) |
715 |
> |
dfh /= sqrt(ourview.hn2); |
716 |
> |
dfv /= sqrt(ourview.vn2); |
717 |
> |
} |
718 |
> |
for (i = 3; i--; ) { |
719 |
> |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
720 |
> |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
721 |
> |
dfv*ourview.vvec[i] + |
722 |
> |
dfd*ourview.vdir[i] ; |
723 |
> |
thisray.rdir[i] = vc - thisray.rorg[i]; |
724 |
> |
} |
725 |
> |
} |
726 |
> |
if (normalize(thisray.rdir) == 0.0) |
727 |
> |
return(0.0); |
728 |
> |
} |
729 |
|
|
730 |
< |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
730 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
731 |
|
|
732 |
|
rayvalue(&thisray); /* trace ray */ |
733 |
|
|
734 |
|
copycolor(col, thisray.rcol); /* return color */ |
735 |
< |
|
735 |
> |
|
736 |
|
return(thisray.rt); /* return distance */ |
737 |
|
} |
738 |
|
|
739 |
|
|
740 |
< |
int |
741 |
< |
salvage(oldfile) /* salvage scanlines from killed program */ |
742 |
< |
char *oldfile; |
740 |
> |
static int |
741 |
> |
salvage( /* salvage scanlines from killed program */ |
742 |
> |
char *oldfile |
743 |
> |
) |
744 |
|
{ |
745 |
|
COLR *scanline; |
746 |
|
FILE *fp; |
747 |
|
int x, y; |
748 |
|
|
749 |
|
if (oldfile == NULL) |
750 |
< |
return(0); |
751 |
< |
|
750 |
> |
goto gotzip; |
751 |
> |
|
752 |
|
if ((fp = fopen(oldfile, "r")) == NULL) { |
753 |
|
sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
754 |
|
error(WARNING, errmsg); |
755 |
< |
return(0); |
755 |
> |
goto gotzip; |
756 |
|
} |
757 |
< |
#ifdef MSDOS |
596 |
< |
setmode(fileno(fp), O_BINARY); |
597 |
< |
#endif |
757 |
> |
SET_FILE_BINARY(fp); |
758 |
|
/* discard header */ |
759 |
< |
getheader(fp, NULL); |
759 |
> |
getheader(fp, NULL, NULL); |
760 |
|
/* get picture size */ |
761 |
|
if (!fscnresolu(&x, &y, fp)) { |
762 |
< |
sprintf(errmsg, "bad recover file \"%s\"", oldfile); |
762 |
> |
sprintf(errmsg, "bad recover file \"%s\" - not removed", |
763 |
> |
oldfile); |
764 |
|
error(WARNING, errmsg); |
765 |
|
fclose(fp); |
766 |
< |
return(0); |
766 |
> |
goto gotzip; |
767 |
|
} |
768 |
|
|
769 |
|
if (x != hres || y != vres) { |
783 |
|
} |
784 |
|
if (fflush(stdout) == EOF) |
785 |
|
goto writerr; |
786 |
< |
free((char *)scanline); |
786 |
> |
free((void *)scanline); |
787 |
|
fclose(fp); |
788 |
|
unlink(oldfile); |
789 |
|
return(y); |
790 |
+ |
gotzip: |
791 |
+ |
if (fflush(stdout) == EOF) |
792 |
+ |
error(SYSTEM, "error writing picture header"); |
793 |
+ |
return(0); |
794 |
|
writerr: |
795 |
|
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
796 |
|
error(SYSTEM, errmsg); |
797 |
+ |
return -1; /* pro forma return */ |
798 |
|
} |
799 |
|
|
800 |
< |
|
801 |
< |
int |
802 |
< |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
803 |
< |
register int x, y; |
804 |
< |
int xres, yres; |
800 |
> |
static int |
801 |
> |
pixnumber( /* compute pixel index (brushed) */ |
802 |
> |
register int x, |
803 |
> |
register int y, |
804 |
> |
int xres, |
805 |
> |
int yres |
806 |
> |
) |
807 |
|
{ |
808 |
|
x -= y; |
809 |
|
while (x < 0) |