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/* Copyright (c) 1986 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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|
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#include "ray.h" |
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#include "copyright.h" |
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|
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#ifdef BSD |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#include <sys/types.h> |
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|
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#include "platform.h" |
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#ifdef NON_POSIX |
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#ifdef MINGW |
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#include <sys/time.h> |
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#endif |
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#else |
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#include <signal.h> |
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#ifdef BSD |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#else |
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#include <sys/times.h> |
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#include <unistd.h> |
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#endif |
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#endif |
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#include <fcntl.h> |
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|
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#include "view.h" |
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#include <time.h> |
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#include <signal.h> |
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|
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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 "hilbert.h" |
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#include "pmapbias.h" |
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#include "pmapdiag.h" |
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|
40 |
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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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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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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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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 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 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 = 1e-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 */ |
102 |
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int ambssamp = 0; /* ambient super-samples */ |
99 |
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int ambvwt = 0; /* initial weight for ambient value */ |
100 |
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double ambacc = 0.2; /* ambient accuracy */ |
101 |
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int ambres = 64; /* ambient resolution */ |
102 |
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int ambdiv = 512; /* ambient divisions */ |
103 |
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int ambssamp = 128; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
105 |
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char *amblist[128]; /* ambient include/exclude list */ |
105 |
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char *amblist[AMBLLEN]; /* ambient include/exclude list */ |
106 |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
107 |
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|
108 |
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int ralrm = 0; /* seconds between reports */ |
109 |
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|
110 |
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double pctdone = 0.0; /* percentage done */ |
110 |
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double pctdone = 0.0; /* percentage done */ |
111 |
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time_t tlastrept = 0L; /* time at last report */ |
112 |
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time_t tstart; /* starting time */ |
113 |
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|
114 |
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extern long nrays; /* number of rays traced */ |
114 |
> |
#define MAXDIV 16 /* maximum sample size */ |
115 |
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|
116 |
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#define MAXDIV 32 /* maximum sample size */ |
116 |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
117 |
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|
118 |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
118 |
> |
int hres, vres; /* resolution for this frame */ |
119 |
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|
120 |
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double pixvalue(); |
120 |
> |
static VIEW lastview; /* the previous view input */ |
121 |
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|
122 |
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static void report(int); |
123 |
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static int nextview(FILE *fp); |
124 |
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static void render(char *zfile, char *oldfile); |
125 |
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static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
126 |
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int y, int xstep); |
127 |
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static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
128 |
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int y, int ysize); |
129 |
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static int fillsample(COLOR *colline, float *zline, int x, int y, |
130 |
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int xlen, int ylen, int b); |
131 |
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static double pixvalue(COLOR col, int x, int y); |
132 |
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static int salvage(char *oldfile); |
133 |
+ |
static int pixnumber(int x, int y, int xres, int yres); |
134 |
|
|
65 |
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quit(code) /* quit program */ |
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int code; |
67 |
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{ |
68 |
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if (code || ralrm > 0) /* report status */ |
69 |
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report(); |
135 |
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|
136 |
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|
137 |
+ |
void |
138 |
+ |
quit(int code) /* quit program */ |
139 |
+ |
{ |
140 |
+ |
if (code) /* report status */ |
141 |
+ |
report(0); |
142 |
+ |
#ifndef NON_POSIX |
143 |
+ |
headclean(); /* delete header file */ |
144 |
+ |
pfclean(); /* clean up persist files */ |
145 |
+ |
#endif |
146 |
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exit(code); |
147 |
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} |
148 |
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|
149 |
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|
150 |
< |
report() /* report progress */ |
150 |
> |
#ifndef NON_POSIX |
151 |
> |
static void |
152 |
> |
report(int dummy) /* report progress */ |
153 |
|
{ |
154 |
+ |
char bcStat [128]; |
155 |
+ |
double u, s; |
156 |
|
#ifdef BSD |
157 |
< |
struct rusage rubuf; |
158 |
< |
double t; |
157 |
> |
struct rusage rubuf; |
158 |
> |
#else |
159 |
> |
double period = 1.0 / 60.0; |
160 |
> |
struct tms tbuf; |
161 |
> |
#endif |
162 |
|
|
163 |
+ |
tlastrept = time((time_t *)NULL); |
164 |
+ |
#ifdef BSD |
165 |
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getrusage(RUSAGE_SELF, &rubuf); |
166 |
< |
t = (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
167 |
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t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
166 |
> |
u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec*1e-6; |
167 |
> |
s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec*1e-6; |
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getrusage(RUSAGE_CHILDREN, &rubuf); |
169 |
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t += (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
170 |
< |
t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
87 |
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|
88 |
< |
sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f CPU hours\n", |
89 |
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nrays, pctdone, t/3600.0); |
169 |
> |
u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec*1e-6; |
170 |
> |
s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec*1e-6; |
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#else |
172 |
< |
signal(SIGALRM, report); |
173 |
< |
sprintf(errmsg, "%ld rays, %4.2f%% done\n", nrays, pctdone); |
172 |
> |
times(&tbuf); |
173 |
> |
#ifdef _SC_CLK_TCK |
174 |
> |
period = 1.0 / sysconf(_SC_CLK_TCK); |
175 |
|
#endif |
176 |
+ |
u = ( tbuf.tms_utime + tbuf.tms_cutime ) * period; |
177 |
+ |
s = ( tbuf.tms_stime + tbuf.tms_cstime ) * period; |
178 |
+ |
#endif |
179 |
+ |
|
180 |
+ |
/* PMAP: Get photon map bias compensation statistics */ |
181 |
+ |
pmapBiasCompReport(bcStat); |
182 |
+ |
|
183 |
+ |
sprintf(errmsg, |
184 |
+ |
"%lu rays, %s%4.2f%% after %.3fu %.3fs %.3fr hours on %s (PID %d)\n", |
185 |
+ |
nrays, bcStat, pctdone, u*(1./3600.), s*(1./3600.), |
186 |
+ |
(tlastrept-tstart)*(1./3600.), myhostname(), getpid()); |
187 |
|
eputs(errmsg); |
188 |
+ |
#ifdef SIGCONT |
189 |
+ |
signal(SIGCONT, report); |
190 |
+ |
#endif |
191 |
+ |
} |
192 |
+ |
#else |
193 |
+ |
static void |
194 |
+ |
report(int dummy) /* report progress */ |
195 |
+ |
{ |
196 |
+ |
char bcStat [128]; |
197 |
+ |
|
198 |
+ |
tlastrept = time((time_t *)NULL); |
199 |
|
|
200 |
< |
if (ralrm > 0) |
201 |
< |
alarm(ralrm); |
200 |
> |
/* PMAP: Get photon map bias compensation statistics */ |
201 |
> |
pmapBiasCompReport(bcStat); |
202 |
> |
|
203 |
> |
sprintf(errmsg, "%lu rays, %s%4.2f%% after %5.4f hours\n", |
204 |
> |
nrays, bcStat, pctdone, (tlastrept-tstart)/3600.0); |
205 |
> |
eputs(errmsg); |
206 |
|
} |
207 |
+ |
#endif |
208 |
|
|
209 |
|
|
210 |
< |
render(zfile, oldfile) /* render the scene */ |
211 |
< |
char *zfile, *oldfile; |
210 |
> |
void |
211 |
> |
rpict( /* generate image(s) */ |
212 |
> |
int seq, |
213 |
> |
char *pout, |
214 |
> |
char *zout, |
215 |
> |
char *prvr |
216 |
> |
) |
217 |
> |
/* |
218 |
> |
* If seq is greater than zero, then we will render a sequence of |
219 |
> |
* images based on view parameter strings read from the standard input. |
220 |
> |
* If pout is NULL, then all images will be sent to the standard ouput. |
221 |
> |
* If seq is greater than zero and prvr is an integer, then it is the |
222 |
> |
* frame number at which rendering should begin. Preceeding view parameter |
223 |
> |
* strings will be skipped in the input. |
224 |
> |
* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
225 |
> |
* Note that pout and zout should contain %d format specifications for |
226 |
> |
* sequenced file naming. |
227 |
> |
*/ |
228 |
|
{ |
229 |
< |
extern long lseek(); |
229 |
> |
char fbuf[128], fbuf2[128]; |
230 |
> |
int npicts; |
231 |
> |
char *cp; |
232 |
> |
RESOLU rs; |
233 |
> |
double pa; |
234 |
> |
/* check sampling */ |
235 |
> |
if (psample < 1) |
236 |
> |
psample = 1; |
237 |
> |
else if (psample > MAXDIV) { |
238 |
> |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
239 |
> |
psample, MAXDIV); |
240 |
> |
error(WARNING, errmsg); |
241 |
> |
psample = MAXDIV; |
242 |
> |
} |
243 |
> |
/* get starting frame */ |
244 |
> |
if (seq <= 0) |
245 |
> |
seq = 0; |
246 |
> |
else if (prvr != NULL && isint(prvr)) { |
247 |
> |
int rn; /* skip to specified view */ |
248 |
> |
if ((rn = atoi(prvr)) < seq) |
249 |
> |
error(USER, "recover frame less than start frame"); |
250 |
> |
if (pout == NULL) |
251 |
> |
error(USER, "missing output file specification"); |
252 |
> |
for ( ; seq < rn; seq++) |
253 |
> |
if (nextview(stdin) == EOF) |
254 |
> |
error(USER, "unexpected EOF on view input"); |
255 |
> |
setview(&ourview); |
256 |
> |
prvr = fbuf; /* mark for renaming */ |
257 |
> |
} |
258 |
> |
if ((pout != NULL) & (prvr != NULL)) { |
259 |
> |
sprintf(fbuf, pout, seq); |
260 |
> |
if (!strcmp(prvr, fbuf)) { /* rename */ |
261 |
> |
strcpy(fbuf2, fbuf); |
262 |
> |
for (cp = fbuf2; *cp; cp++) |
263 |
> |
; |
264 |
> |
while (cp > fbuf2 && !ISDIRSEP(cp[-1])) |
265 |
> |
cp--; |
266 |
> |
strcpy(cp, RFTEMPLATE); |
267 |
> |
prvr = mktemp(fbuf2); |
268 |
> |
if (rename(fbuf, prvr) < 0) { |
269 |
> |
if (errno == ENOENT) { /* ghost file */ |
270 |
> |
sprintf(errmsg, |
271 |
> |
"new output file \"%s\"", |
272 |
> |
fbuf); |
273 |
> |
error(WARNING, errmsg); |
274 |
> |
prvr = NULL; |
275 |
> |
} else { /* serious error */ |
276 |
> |
sprintf(errmsg, |
277 |
> |
"cannot rename \"%s\" to \"%s\"", |
278 |
> |
fbuf, prvr); |
279 |
> |
error(SYSTEM, errmsg); |
280 |
> |
} |
281 |
> |
} |
282 |
> |
} |
283 |
> |
} |
284 |
> |
npicts = 0; /* render sequence */ |
285 |
> |
do { |
286 |
> |
if (seq && nextview(stdin) == EOF) |
287 |
> |
break; |
288 |
> |
pctdone = 0.0; |
289 |
> |
if (pout != NULL) { |
290 |
> |
int myfd; |
291 |
> |
close(1); /* reassign stdout */ |
292 |
> |
sprintf(fbuf, pout, seq); |
293 |
> |
tryagain: |
294 |
> |
errno = 0; /* exclusive open */ |
295 |
> |
if ((myfd = open(fbuf, O_WRONLY|O_CREAT|O_EXCL, 0666)) < 0) { |
296 |
> |
if ((errno != EEXIST) | (prvr != NULL) || |
297 |
> |
!strcmp(fbuf, pout)) { |
298 |
> |
sprintf(errmsg, |
299 |
> |
"cannot open output file \"%s\"", |
300 |
> |
fbuf); |
301 |
> |
error(SYSTEM, errmsg); |
302 |
> |
} |
303 |
> |
setview(&ourview); |
304 |
> |
continue; /* don't clobber */ |
305 |
> |
} |
306 |
> |
if (myfd != 1) { |
307 |
> |
unlink(fbuf); |
308 |
> |
goto tryagain; /* leave it open */ |
309 |
> |
} |
310 |
> |
SET_FD_BINARY(1); |
311 |
> |
dupheader(); |
312 |
> |
} |
313 |
> |
hres = hresolu; vres = vresolu; pa = pixaspect; |
314 |
> |
if (prvr != NULL) { |
315 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
316 |
> |
sprintf(errmsg, |
317 |
> |
"cannot recover view parameters from \"%s\"", prvr); |
318 |
> |
error(WARNING, errmsg); |
319 |
> |
} else { |
320 |
> |
pa = 0.0; |
321 |
> |
hres = scanlen(&rs); |
322 |
> |
vres = numscans(&rs); |
323 |
> |
} |
324 |
> |
} |
325 |
> |
if ((cp = setview(&ourview)) != NULL) |
326 |
> |
error(USER, cp); |
327 |
> |
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
328 |
> |
if (seq) { |
329 |
> |
if (ralrm > 0) { |
330 |
> |
fprintf(stderr, "FRAME %d:", seq); |
331 |
> |
fprintview(&ourview, stderr); |
332 |
> |
putc('\n', stderr); |
333 |
> |
fflush(stderr); |
334 |
> |
} |
335 |
> |
printf("FRAME=%d\n", seq); |
336 |
> |
} |
337 |
> |
fputs(VIEWSTR, stdout); |
338 |
> |
fprintview(&ourview, stdout); |
339 |
> |
putchar('\n'); |
340 |
> |
if ((pa < .99) | (pa > 1.01)) |
341 |
> |
fputaspect(pa, stdout); |
342 |
> |
fputnow(stdout); |
343 |
> |
fputformat(COLRFMT, stdout); |
344 |
> |
putchar('\n'); |
345 |
> |
if (zout != NULL) |
346 |
> |
sprintf(cp=fbuf, zout, seq); |
347 |
> |
else |
348 |
> |
cp = NULL; |
349 |
> |
render(cp, prvr); |
350 |
> |
prvr = NULL; |
351 |
> |
npicts++; |
352 |
> |
} while (seq++); |
353 |
> |
/* check that we did something */ |
354 |
> |
if (npicts == 0) |
355 |
> |
error(WARNING, "no output produced"); |
356 |
> |
} |
357 |
> |
|
358 |
> |
|
359 |
> |
static int |
360 |
> |
nextview( /* get next view from fp */ |
361 |
> |
FILE *fp |
362 |
> |
) |
363 |
> |
{ |
364 |
> |
char linebuf[256]; |
365 |
> |
|
366 |
> |
lastview = ourview; |
367 |
> |
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
368 |
> |
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
369 |
> |
return(0); |
370 |
> |
return(EOF); |
371 |
> |
} |
372 |
> |
|
373 |
> |
|
374 |
> |
static void |
375 |
> |
render( /* render the scene */ |
376 |
> |
char *zfile, |
377 |
> |
char *oldfile |
378 |
> |
) |
379 |
> |
{ |
380 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
381 |
|
float *zbar[MAXDIV+1]; /* z values */ |
382 |
+ |
char *sampdens; /* previous sample density */ |
383 |
|
int ypos; /* current scanline */ |
384 |
|
int ystep; /* current y step size */ |
385 |
+ |
int hstep; /* h step size */ |
386 |
|
int zfd; |
387 |
|
COLOR *colptr; |
388 |
|
float *zptr; |
389 |
< |
register int i; |
390 |
< |
/* check sampling */ |
391 |
< |
if (psample < 1) |
392 |
< |
psample = 1; |
393 |
< |
else if (psample > MAXDIV) |
394 |
< |
psample = MAXDIV; |
389 |
> |
int i; |
390 |
> |
/* check for empty image */ |
391 |
> |
if ((hres <= 0) | (vres <= 0)) { |
392 |
> |
error(WARNING, "empty output picture"); |
393 |
> |
fprtresolu(0, 0, stdout); |
394 |
> |
return; |
395 |
> |
} |
396 |
|
/* allocate scanlines */ |
397 |
|
for (i = 0; i <= psample; i++) { |
398 |
< |
scanbar[i] = (COLOR *)malloc(hresolu*sizeof(COLOR)); |
398 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
399 |
|
if (scanbar[i] == NULL) |
400 |
|
goto memerr; |
401 |
|
} |
402 |
< |
/* open z file */ |
402 |
> |
hstep = (psample*140+49)/99; /* quincunx sampling */ |
403 |
> |
ystep = (psample*99+70)/140; |
404 |
> |
if (hstep > 2) { |
405 |
> |
i = hres/hstep + 2; |
406 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
407 |
> |
goto memerr; |
408 |
> |
while (i--) |
409 |
> |
sampdens[i] = hstep; |
410 |
> |
} else |
411 |
> |
sampdens = NULL; |
412 |
> |
/* open z-file */ |
413 |
|
if (zfile != NULL) { |
414 |
|
if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
415 |
< |
sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
415 |
> |
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
416 |
|
error(SYSTEM, errmsg); |
417 |
|
} |
418 |
+ |
SET_FD_BINARY(zfd); |
419 |
|
for (i = 0; i <= psample; i++) { |
420 |
< |
zbar[i] = (float *)malloc(hresolu*sizeof(float)); |
420 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
421 |
|
if (zbar[i] == NULL) |
422 |
|
goto memerr; |
423 |
|
} |
427 |
|
zbar[i] = NULL; |
428 |
|
} |
429 |
|
/* write out boundaries */ |
430 |
< |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
430 |
> |
fprtresolu(hres, vres, stdout); |
431 |
|
/* recover file and compute first */ |
432 |
|
i = salvage(oldfile); |
433 |
< |
if (zfd != -1 && lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
434 |
< |
error(SYSTEM, "z file seek error in render"); |
435 |
< |
ypos = vresolu-1 - i; |
436 |
< |
fillscanline(scanbar[0], zbar[0], hresolu, ypos, psample); |
437 |
< |
ystep = psample; |
433 |
> |
if (i >= vres) |
434 |
> |
goto alldone; |
435 |
> |
if ((zfd != -1) & (i > 0) && |
436 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
437 |
> |
error(SYSTEM, "z-file seek error in render"); |
438 |
> |
pctdone = 100.0*i/vres; |
439 |
> |
if (ralrm > 0) /* report init stats */ |
440 |
> |
report(0); |
441 |
> |
#ifdef SIGCONT |
442 |
> |
else |
443 |
> |
signal(SIGCONT, report); |
444 |
> |
#endif |
445 |
> |
ypos = vres-1 - i; /* initialize sampling */ |
446 |
> |
if (directvis) |
447 |
> |
init_drawsources(psample); |
448 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
449 |
|
/* compute scanlines */ |
450 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
151 |
– |
/* record progress */ |
152 |
– |
pctdone = 100.0*(vresolu-1-ypos-ystep)/vresolu; |
451 |
|
/* bottom adjust? */ |
452 |
|
if (ypos < 0) { |
453 |
|
ystep += ypos; |
460 |
|
zbar[ystep] = zbar[0]; |
461 |
|
zbar[0] = zptr; |
462 |
|
/* fill base line */ |
463 |
< |
fillscanline(scanbar[0], zbar[0], hresolu, ypos, psample); |
463 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, |
464 |
> |
hres, ypos, hstep); |
465 |
|
/* fill bar */ |
466 |
< |
fillscanbar(scanbar, zbar, hresolu, ypos, ystep); |
466 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
467 |
> |
if (directvis) /* add bitty sources */ |
468 |
> |
drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
469 |
|
/* write it out */ |
470 |
+ |
#ifdef SIGCONT |
471 |
+ |
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
472 |
+ |
#endif |
473 |
|
for (i = ystep; i > 0; i--) { |
474 |
|
if (zfd != -1 && write(zfd, (char *)zbar[i], |
475 |
< |
hresolu*sizeof(float)) |
476 |
< |
< hresolu*sizeof(float)) |
475 |
> |
hres*sizeof(float)) |
476 |
> |
< hres*sizeof(float)) |
477 |
|
goto writerr; |
478 |
< |
if (fwritescan(scanbar[i], hresolu, stdout) < 0) |
478 |
> |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
479 |
|
goto writerr; |
480 |
|
} |
481 |
|
if (fflush(stdout) == EOF) |
482 |
|
goto writerr; |
483 |
+ |
/* record progress */ |
484 |
+ |
pctdone = 100.0*(vres-1-ypos)/vres; |
485 |
+ |
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
486 |
+ |
report(0); |
487 |
+ |
#ifdef SIGCONT |
488 |
+ |
else |
489 |
+ |
signal(SIGCONT, report); |
490 |
+ |
#endif |
491 |
|
} |
492 |
|
/* clean up */ |
493 |
+ |
#ifdef SIGCONT |
494 |
+ |
signal(SIGCONT, SIG_IGN); |
495 |
+ |
#endif |
496 |
+ |
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
497 |
+ |
< hres*sizeof(float)) |
498 |
+ |
goto writerr; |
499 |
+ |
fwritescan(scanbar[0], hres, stdout); |
500 |
+ |
if (fflush(stdout) == EOF) |
501 |
+ |
goto writerr; |
502 |
+ |
alldone: |
503 |
|
if (zfd != -1) { |
182 |
– |
if (write(zfd, (char *)zbar[0], hresolu*sizeof(float)) |
183 |
– |
< hresolu*sizeof(float)) |
184 |
– |
goto writerr; |
504 |
|
if (close(zfd) == -1) |
505 |
|
goto writerr; |
506 |
|
for (i = 0; i <= psample; i++) |
507 |
< |
free((char *)zbar[i]); |
507 |
> |
free((void *)zbar[i]); |
508 |
|
} |
190 |
– |
fwritescan(scanbar[0], hresolu, stdout); |
191 |
– |
if (fflush(stdout) == EOF) |
192 |
– |
goto writerr; |
509 |
|
for (i = 0; i <= psample; i++) |
510 |
< |
free((char *)scanbar[i]); |
510 |
> |
free((void *)scanbar[i]); |
511 |
> |
if (sampdens != NULL) |
512 |
> |
free(sampdens); |
513 |
|
pctdone = 100.0; |
514 |
+ |
if (ralrm > 0) |
515 |
+ |
report(0); |
516 |
+ |
#ifdef SIGCONT |
517 |
+ |
signal(SIGCONT, SIG_DFL); |
518 |
+ |
#endif |
519 |
|
return; |
520 |
|
writerr: |
521 |
|
error(SYSTEM, "write error in render"); |
524 |
|
} |
525 |
|
|
526 |
|
|
527 |
< |
fillscanline(scanline, zline, xres, y, xstep) /* fill scan line at y */ |
528 |
< |
register COLOR *scanline; |
529 |
< |
register float *zline; |
530 |
< |
int xres, y, xstep; |
527 |
> |
static void |
528 |
> |
fillscanline( /* fill scan at y */ |
529 |
> |
COLOR *scanline, |
530 |
> |
float *zline, |
531 |
> |
char *sd, |
532 |
> |
int xres, |
533 |
> |
int y, |
534 |
> |
int xstep |
535 |
> |
) |
536 |
|
{ |
537 |
< |
int b = xstep; |
538 |
< |
double z; |
539 |
< |
register int i; |
540 |
< |
|
537 |
> |
static int nc = 0; /* number of calls */ |
538 |
> |
int bl = xstep, b = xstep; |
539 |
> |
double z; |
540 |
> |
int i; |
541 |
> |
|
542 |
|
z = pixvalue(scanline[0], 0, y); |
543 |
|
if (zline) zline[0] = z; |
544 |
< |
|
545 |
< |
for (i = xstep; i < xres-1+xstep; i += xstep) { |
544 |
> |
/* zig-zag start for quincunx pattern */ |
545 |
> |
for (i = ++nc & 1 ? xstep : xstep/2; i < xres-1+xstep; i += xstep) { |
546 |
|
if (i >= xres) { |
547 |
|
xstep += xres-1-i; |
548 |
|
i = xres-1; |
549 |
|
} |
550 |
|
z = pixvalue(scanline[i], i, y); |
551 |
|
if (zline) zline[i] = z; |
552 |
< |
|
553 |
< |
b = fillsample(scanline+i-xstep, zline ? zline+i-xstep : NULL, |
554 |
< |
i-xstep, y, xstep, 0, b/2); |
552 |
> |
if (sd) b = sd[0] > sd[1] ? sd[0] : sd[1]; |
553 |
> |
if (i <= xstep) |
554 |
> |
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
555 |
> |
else |
556 |
> |
b = fillsample(scanline+i-xstep, |
557 |
> |
zline ? zline+i-xstep : (float *)NULL, |
558 |
> |
i-xstep, y, xstep, 0, b/2); |
559 |
> |
if (sd) *sd++ = nc & 1 ? bl : b; |
560 |
> |
bl = b; |
561 |
|
} |
562 |
+ |
if (sd && nc & 1) *sd = bl; |
563 |
|
} |
564 |
|
|
565 |
|
|
566 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
567 |
< |
register COLOR *scanbar[]; |
568 |
< |
register float *zbar[]; |
569 |
< |
int xres, y, ysize; |
566 |
> |
static void |
567 |
> |
fillscanbar( /* fill interior */ |
568 |
> |
COLOR *scanbar[], |
569 |
> |
float *zbar[], |
570 |
> |
int xres, |
571 |
> |
int y, |
572 |
> |
int ysize |
573 |
> |
) |
574 |
|
{ |
575 |
|
COLOR vline[MAXDIV+1]; |
576 |
|
float zline[MAXDIV+1]; |
577 |
|
int b = ysize; |
578 |
< |
register int i, j; |
579 |
< |
|
578 |
> |
int i, j; |
579 |
> |
|
580 |
|
for (i = 0; i < xres; i++) { |
241 |
– |
|
581 |
|
copycolor(vline[0], scanbar[0][i]); |
582 |
|
copycolor(vline[ysize], scanbar[ysize][i]); |
583 |
|
if (zbar[0]) { |
584 |
|
zline[0] = zbar[0][i]; |
585 |
|
zline[ysize] = zbar[ysize][i]; |
586 |
|
} |
587 |
< |
|
249 |
< |
b = fillsample(vline, zbar[0] ? zline : NULL, |
587 |
> |
b = fillsample(vline, zbar[0] ? zline : (float *)NULL, |
588 |
|
i, y, 0, ysize, b/2); |
589 |
< |
|
589 |
> |
|
590 |
|
for (j = 1; j < ysize; j++) |
591 |
|
copycolor(scanbar[j][i], vline[j]); |
592 |
|
if (zbar[0]) |
596 |
|
} |
597 |
|
|
598 |
|
|
599 |
< |
int |
600 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
601 |
< |
register COLOR *colline; |
602 |
< |
register float *zline; |
603 |
< |
int x, y; |
604 |
< |
int xlen, ylen; |
605 |
< |
int b; |
599 |
> |
static int |
600 |
> |
fillsample( /* fill interior points */ |
601 |
> |
COLOR *colline, |
602 |
> |
float *zline, |
603 |
> |
int x, |
604 |
> |
int y, |
605 |
> |
int xlen, |
606 |
> |
int ylen, |
607 |
> |
int b |
608 |
> |
) |
609 |
|
{ |
610 |
< |
extern double fabs(); |
611 |
< |
double ratio; |
271 |
< |
double z; |
610 |
> |
double ratio; |
611 |
> |
double z; |
612 |
|
COLOR ctmp; |
613 |
|
int ncut; |
614 |
< |
register int len; |
615 |
< |
|
614 |
> |
int len; |
615 |
> |
|
616 |
|
if (xlen > 0) /* x or y length is zero */ |
617 |
|
len = xlen; |
618 |
|
else |
619 |
|
len = ylen; |
620 |
< |
|
620 |
> |
|
621 |
|
if (len <= 1) /* limit recursion */ |
622 |
|
return(0); |
623 |
< |
|
624 |
< |
if (b > 0 |
625 |
< |
|| (zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
623 |
> |
|
624 |
> |
if (b > 0 || |
625 |
> |
(zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
626 |
|
|| bigdiff(colline[0], colline[len], maxdiff)) { |
627 |
< |
|
627 |
> |
|
628 |
|
z = pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
629 |
|
if (zline) zline[len>>1] = z; |
630 |
|
ncut = 1; |
291 |
– |
|
631 |
|
} else { /* interpolate */ |
293 |
– |
|
632 |
|
copycolor(colline[len>>1], colline[len]); |
633 |
|
ratio = (double)(len>>1) / len; |
634 |
|
scalecolor(colline[len>>1], ratio); |
642 |
|
} |
643 |
|
/* recurse */ |
644 |
|
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
645 |
< |
|
646 |
< |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
645 |
> |
|
646 |
> |
ncut += fillsample(colline+(len>>1), |
647 |
> |
zline ? zline+(len>>1) : (float *)NULL, |
648 |
|
x+(xlen>>1), y+(ylen>>1), |
649 |
|
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
650 |
|
|
652 |
|
} |
653 |
|
|
654 |
|
|
655 |
< |
double |
656 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
657 |
< |
COLOR col; /* returned color */ |
658 |
< |
int x, y; /* pixel position */ |
655 |
> |
static double |
656 |
> |
pixvalue( /* compute pixel value */ |
657 |
> |
COLOR col, /* returned color */ |
658 |
> |
int x, /* pixel position */ |
659 |
> |
int y |
660 |
> |
) |
661 |
|
{ |
662 |
< |
static RAY thisray; /* our ray for this pixel */ |
663 |
< |
|
664 |
< |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
665 |
< |
(x+pixjitter())/hresolu, (y+pixjitter())/vresolu) < 0) { |
666 |
< |
setcolor(col, 0.0, 0.0, 0.0); |
662 |
> |
extern void SDsquare2disk(double ds[2], double seedx, double seedy); |
663 |
> |
RAY thisray; |
664 |
> |
FVECT lorg, ldir; |
665 |
> |
double hpos, vpos, vdist, lmax; |
666 |
> |
int i; |
667 |
> |
/* compute view ray */ |
668 |
> |
setcolor(col, 0.0, 0.0, 0.0); |
669 |
> |
hpos = (x+pixjitter())/hres; |
670 |
> |
vpos = (y+pixjitter())/vres; |
671 |
> |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
672 |
> |
&ourview, hpos, vpos)) < -FTINY) |
673 |
|
return(0.0); |
674 |
+ |
|
675 |
+ |
vdist = ourview.vdist; |
676 |
+ |
/* set pixel index */ |
677 |
+ |
samplendx = pixnumber(x,y,hres,vres); |
678 |
+ |
/* optional motion blur */ |
679 |
+ |
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
680 |
+ |
&lastview, hpos, vpos)) >= -FTINY) { |
681 |
+ |
double d = mblur*(.5-urand(281+samplendx)); |
682 |
+ |
|
683 |
+ |
thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
684 |
+ |
for (i = 3; i--; ) { |
685 |
+ |
thisray.rorg[i] = (1.-d)*thisray.rorg[i] + d*lorg[i]; |
686 |
+ |
thisray.rdir[i] = (1.-d)*thisray.rdir[i] + d*ldir[i]; |
687 |
+ |
} |
688 |
+ |
if (normalize(thisray.rdir) == 0.0) |
689 |
+ |
return(0.0); |
690 |
+ |
vdist = (1.-d)*vdist + d*lastview.vdist; |
691 |
|
} |
692 |
+ |
/* optional depth-of-field */ |
693 |
+ |
if (dblur > FTINY) { |
694 |
+ |
double vc, df[2]; |
695 |
+ |
/* random point on disk */ |
696 |
+ |
SDsquare2disk(df, frandom(), frandom()); |
697 |
+ |
df[0] *= .5*dblur; |
698 |
+ |
df[1] *= .5*dblur; |
699 |
+ |
if ((ourview.type == VT_PER) | (ourview.type == VT_PAR)) { |
700 |
+ |
double adj = 1.0; |
701 |
+ |
if (ourview.type == VT_PER) |
702 |
+ |
adj /= DOT(thisray.rdir, ourview.vdir); |
703 |
+ |
df[0] /= sqrt(ourview.hn2); |
704 |
+ |
df[1] /= sqrt(ourview.vn2); |
705 |
+ |
for (i = 3; i--; ) { |
706 |
+ |
vc = ourview.vp[i] + adj*vdist*thisray.rdir[i]; |
707 |
+ |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
708 |
+ |
df[1]*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) & (ourview.type != VT_PLS)) { |
714 |
+ |
if (ourview.type != VT_CYL) |
715 |
+ |
df[0] /= sqrt(ourview.hn2); |
716 |
+ |
df[1] /= sqrt(ourview.vn2); |
717 |
+ |
} |
718 |
+ |
for (i = 3; i--; ) { |
719 |
+ |
vc = ourview.vp[i] + vdist*thisray.rdir[i]; |
720 |
+ |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
721 |
+ |
df[1]*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 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
731 |
< |
|
730 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
731 |
> |
|
732 |
|
rayvalue(&thisray); /* trace ray */ |
733 |
|
|
734 |
|
copycolor(col, thisray.rcol); /* return color */ |
735 |
< |
|
736 |
< |
return(thisray.rt); /* return distance */ |
735 |
> |
|
736 |
> |
return(raydistance(&thisray)); /* 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 |
+ |
SET_FILE_BINARY(fp); |
758 |
|
/* discard header */ |
759 |
< |
getheader(fp, NULL); |
759 |
> |
getheader(fp, NULL, NULL); |
760 |
|
/* get picture size */ |
761 |
< |
if (fgetresolu(&x, &y, fp) != (YMAJOR|YDECR)) { |
762 |
< |
sprintf(errmsg, "bad recover file \"%s\"", oldfile); |
761 |
> |
if (!fscnresolu(&x, &y, fp)) { |
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 != hresolu || y != vresolu) { |
769 |
> |
if ((x != hres) | (y != vres)) { |
770 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
771 |
|
oldfile); |
772 |
|
error(USER, errmsg); |
773 |
|
} |
774 |
|
|
775 |
< |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
775 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
776 |
|
if (scanline == NULL) |
777 |
|
error(SYSTEM, "out of memory in salvage"); |
778 |
< |
for (y = 0; y < vresolu; y++) { |
779 |
< |
if (freadcolrs(scanline, hresolu, fp) < 0) |
778 |
> |
for (y = 0; y < vres; y++) { |
779 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
780 |
|
break; |
781 |
< |
if (fwritecolrs(scanline, hresolu, stdout) < 0) |
781 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
782 |
|
goto writerr; |
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 |
< |
error(SYSTEM, "write error in salvage"); |
795 |
> |
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
796 |
> |
error(SYSTEM, errmsg); |
797 |
> |
return -1; /* pro forma return */ |
798 |
> |
} |
799 |
> |
|
800 |
> |
static int |
801 |
> |
pixnumber( /* compute pixel index (screen door) */ |
802 |
> |
int x, |
803 |
> |
int y, |
804 |
> |
int xres, |
805 |
> |
int yres |
806 |
> |
) |
807 |
> |
{ |
808 |
> |
unsigned nbits = 0; |
809 |
> |
bitmask_t coord[2]; |
810 |
> |
|
811 |
> |
if (xres < yres) xres = yres; |
812 |
> |
while (xres > 0) { |
813 |
> |
xres >>= 1; |
814 |
> |
++nbits; |
815 |
> |
} |
816 |
> |
coord[0] = x; coord[1] = y; |
817 |
> |
return ((int)hilbert_c2i(2, nbits, coord)); |
818 |
|
} |