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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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|
4 |
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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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#include <sys/types.h> |
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|
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#ifndef NIX |
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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 <sys/utsname.h> |
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#include <limits.h> |
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#include <unistd.h> |
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#endif |
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#endif |
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|
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extern time_t time(); |
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|
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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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|
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#include "resolu.h" |
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|
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#include "random.h" |
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|
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#include "paths.h" |
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#include "rtmisc.h" /* myhostname() */ |
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|
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|
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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 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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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 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 */ |
94 |
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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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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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|
102 |
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double pctdone = 0.0; /* percentage done */ |
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|
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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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extern time_t tstart; /* starting time */ |
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|
94 |
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extern unsigned long nrays; /* number of rays traced */ |
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|
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#define MAXDIV 16 /* maximum sample size */ |
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|
108 |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
109 |
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|
110 |
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static int hres, vres; /* resolution for this frame */ |
110 |
> |
int hres, vres; /* resolution for this frame */ |
111 |
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|
112 |
< |
extern char *mktemp(); |
112 |
> |
static VIEW lastview; /* the previous view input */ |
113 |
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|
114 |
< |
double pixvalue(); |
114 |
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//extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
115 |
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|
116 |
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#ifdef NIX |
117 |
< |
#define file_exists(f) (access(f,F_OK)==0) |
118 |
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#else |
116 |
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//double pixvalue(); |
117 |
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|
118 |
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static void report(int); |
119 |
> |
static int nextview(FILE *fp); |
120 |
> |
static void render(char *zfile, char *oldfile); |
121 |
> |
static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
122 |
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int y, int xstep); |
123 |
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static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
124 |
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int y, int ysize); |
125 |
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static int fillsample(COLOR *colline, float *zline, int x, int y, |
126 |
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int xlen, int ylen, int b); |
127 |
> |
static double pixvalue(COLOR col, int x, int y); |
128 |
> |
static int salvage(char *oldfile); |
129 |
> |
static int pixnumber(int x, int y, int xres, int yres); |
130 |
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|
131 |
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|
132 |
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|
133 |
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#ifdef RHAS_STAT |
134 |
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#include <sys/types.h> |
135 |
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#include <sys/stat.h> |
136 |
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int |
141 |
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if (stat(fname, &sbuf) < 0) return(0); |
142 |
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return((sbuf.st_mode & S_IFREG) != 0); |
143 |
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} |
144 |
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#else |
145 |
+ |
#define file_exists(f) (access(f,F_OK)==0) |
146 |
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#endif |
147 |
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|
148 |
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|
149 |
+ |
void |
150 |
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quit(code) /* quit program */ |
151 |
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int code; |
152 |
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{ |
153 |
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if (code) /* report status */ |
154 |
< |
report(); |
154 |
> |
report(0); |
155 |
> |
#ifndef NON_POSIX |
156 |
|
headclean(); /* delete header file */ |
157 |
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pfclean(); /* clean up persist files */ |
158 |
+ |
#endif |
159 |
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exit(code); |
160 |
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} |
161 |
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|
162 |
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|
163 |
< |
#ifndef NIX |
164 |
< |
report() /* report progress */ |
163 |
> |
#ifndef NON_POSIX |
164 |
> |
static void |
165 |
> |
report(int dummy) /* report progress */ |
166 |
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{ |
167 |
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double u, s; |
168 |
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#ifdef BSD |
138 |
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char hostname[257]; |
169 |
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struct rusage rubuf; |
170 |
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#else |
171 |
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struct tms tbuf; |
172 |
< |
struct utsname nambuf; |
143 |
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#define hostname nambuf.sysname |
172 |
> |
double period; |
173 |
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#endif |
174 |
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|
175 |
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tlastrept = time((time_t *)NULL); |
180 |
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getrusage(RUSAGE_CHILDREN, &rubuf); |
181 |
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u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
182 |
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s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
154 |
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gethostname(hostname, sizeof(hostname)); |
183 |
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#else |
184 |
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times(&tbuf); |
185 |
< |
u = ( tbuf.tms_utime + tbuf.tms_cutime ) / CLK_TCK; |
186 |
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s = ( tbuf.tms_stime + tbuf.tms_cstime ) / CLK_TCK; |
187 |
< |
uname(&nambuf); |
185 |
> |
#ifdef _SC_CLK_TCK |
186 |
> |
period = 1.0 / sysconf(_SC_CLK_TCK); |
187 |
> |
#else |
188 |
> |
period = 1.0 / 60.0; |
189 |
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#endif |
190 |
+ |
u = ( tbuf.tms_utime + tbuf.tms_cutime ) * period; |
191 |
+ |
s = ( tbuf.tms_stime + tbuf.tms_cstime ) * period; |
192 |
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#endif |
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|
194 |
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sprintf(errmsg, |
195 |
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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., |
197 |
< |
(tlastrept-tstart)/3600., hostname); |
197 |
> |
(tlastrept-tstart)/3600., myhostname()); |
198 |
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eputs(errmsg); |
199 |
< |
#undef hostname |
199 |
> |
#ifdef SIGCONT |
200 |
> |
signal(SIGCONT, report); |
201 |
> |
#endif |
202 |
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} |
203 |
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#else |
204 |
< |
report() /* report progress */ |
204 |
> |
static void |
205 |
> |
report(int dummy) /* report progress */ |
206 |
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{ |
207 |
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tlastrept = time((time_t *)NULL); |
208 |
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sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
209 |
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nrays, pctdone, (tlastrept-tstart)/3600.0); |
210 |
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eputs(errmsg); |
176 |
– |
signal(SIGCONT, report); |
211 |
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} |
212 |
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#endif |
213 |
|
|
214 |
|
|
215 |
< |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
216 |
< |
int seq; |
217 |
< |
char *pout, *zout, *prvr; |
215 |
> |
extern void |
216 |
> |
rpict( /* generate image(s) */ |
217 |
> |
int seq, |
218 |
> |
char *pout, |
219 |
> |
char *zout, |
220 |
> |
char *prvr |
221 |
> |
) |
222 |
|
/* |
223 |
|
* If seq is greater than zero, then we will render a sequence of |
224 |
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* images based on view parameter strings read from the standard input. |
231 |
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* sequenced file naming. |
232 |
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*/ |
233 |
|
{ |
196 |
– |
extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
234 |
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char fbuf[128], fbuf2[128]; |
235 |
|
int npicts; |
236 |
|
register char *cp; |
257 |
|
for ( ; seq < rn; seq++) |
258 |
|
if (nextview(stdin) == EOF) |
259 |
|
error(USER, "unexpected EOF on view input"); |
260 |
+ |
setview(&ourview); |
261 |
|
prvr = fbuf; /* mark for renaming */ |
262 |
|
} |
263 |
< |
if (pout != NULL & prvr != NULL) { |
263 |
> |
if ((pout != NULL) & (prvr != NULL)) { |
264 |
|
sprintf(fbuf, pout, seq); |
265 |
|
if (!strcmp(prvr, fbuf)) { /* rename */ |
266 |
|
strcpy(fbuf2, fbuf); |
270 |
|
cp--; |
271 |
|
strcpy(cp, RFTEMPLATE); |
272 |
|
prvr = mktemp(fbuf2); |
273 |
< |
if (rename(fbuf, prvr) < 0) |
273 |
> |
if (rename(fbuf, prvr) < 0) { |
274 |
|
if (errno == ENOENT) { /* ghost file */ |
275 |
|
sprintf(errmsg, |
276 |
|
"new output file \"%s\"", |
283 |
|
fbuf, prvr); |
284 |
|
error(SYSTEM, errmsg); |
285 |
|
} |
286 |
+ |
} |
287 |
|
} |
288 |
|
} |
289 |
|
npicts = 0; /* render sequence */ |
300 |
|
fbuf); |
301 |
|
error(USER, errmsg); |
302 |
|
} |
303 |
+ |
setview(&ourview); |
304 |
|
continue; /* don't clobber */ |
305 |
|
} |
306 |
|
if (freopen(fbuf, "w", stdout) == NULL) { |
308 |
|
"cannot open output file \"%s\"", fbuf); |
309 |
|
error(SYSTEM, errmsg); |
310 |
|
} |
311 |
< |
#ifdef MSDOS |
272 |
< |
setmode(fileno(stdout), O_BINARY); |
273 |
< |
#endif |
311 |
> |
SET_FILE_BINARY(stdout); |
312 |
|
dupheader(); |
313 |
|
} |
314 |
|
hres = hresolu; vres = vresolu; pa = pixaspect; |
315 |
< |
if (prvr != NULL) |
316 |
< |
if (viewfile(prvr, &ourview, &rs) <= 0 |
279 |
< |
|| rs.or != PIXSTANDARD) { |
315 |
> |
if (prvr != NULL) { |
316 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
317 |
|
sprintf(errmsg, |
318 |
|
"cannot recover view parameters from \"%s\"", prvr); |
319 |
|
error(WARNING, errmsg); |
322 |
|
hres = scanlen(&rs); |
323 |
|
vres = numscans(&rs); |
324 |
|
} |
325 |
+ |
} |
326 |
|
if ((cp = setview(&ourview)) != NULL) |
327 |
|
error(USER, cp); |
328 |
|
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
340 |
|
putchar('\n'); |
341 |
|
if (pa < .99 || pa > 1.01) |
342 |
|
fputaspect(pa, stdout); |
343 |
+ |
fputnow(stdout); |
344 |
|
fputformat(COLRFMT, stdout); |
345 |
|
putchar('\n'); |
346 |
|
if (zout != NULL) |
357 |
|
} |
358 |
|
|
359 |
|
|
360 |
< |
nextview(fp) /* get next view from fp */ |
361 |
< |
FILE *fp; |
360 |
> |
static int |
361 |
> |
nextview( /* get next view from fp */ |
362 |
> |
FILE *fp |
363 |
> |
) |
364 |
|
{ |
365 |
|
char linebuf[256]; |
366 |
|
|
367 |
+ |
lastview = ourview; |
368 |
|
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
369 |
|
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
370 |
|
return(0); |
372 |
|
} |
373 |
|
|
374 |
|
|
375 |
< |
render(zfile, oldfile) /* render the scene */ |
376 |
< |
char *zfile, *oldfile; |
375 |
> |
static void |
376 |
> |
render( /* render the scene */ |
377 |
> |
char *zfile, |
378 |
> |
char *oldfile |
379 |
> |
) |
380 |
|
{ |
336 |
– |
extern long lseek(); |
381 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
382 |
|
float *zbar[MAXDIV+1]; /* z values */ |
383 |
|
char *sampdens; /* previous sample density */ |
388 |
|
COLOR *colptr; |
389 |
|
float *zptr; |
390 |
|
register int i; |
391 |
+ |
/* check for empty image */ |
392 |
+ |
if (hres <= 0 || vres <= 0) { |
393 |
+ |
error(WARNING, "empty output picture"); |
394 |
+ |
fprtresolu(0, 0, stdout); |
395 |
+ |
return; |
396 |
+ |
} |
397 |
|
/* allocate scanlines */ |
398 |
|
for (i = 0; i <= psample; i++) { |
399 |
|
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
404 |
|
ystep = (psample*99+70)/140; |
405 |
|
if (hstep > 2) { |
406 |
|
i = hres/hstep + 2; |
407 |
< |
if ((sampdens = malloc(i)) == NULL) |
407 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
408 |
|
goto memerr; |
409 |
|
while (i--) |
410 |
|
sampdens[i] = hstep; |
416 |
|
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
417 |
|
error(SYSTEM, errmsg); |
418 |
|
} |
419 |
< |
#ifdef MSDOS |
370 |
< |
setmode(zfd, O_BINARY); |
371 |
< |
#endif |
419 |
> |
SET_FD_BINARY(zfd); |
420 |
|
for (i = 0; i <= psample; i++) { |
421 |
|
zbar[i] = (float *)malloc(hres*sizeof(float)); |
422 |
|
if (zbar[i] == NULL) |
431 |
|
fprtresolu(hres, vres, stdout); |
432 |
|
/* recover file and compute first */ |
433 |
|
i = salvage(oldfile); |
434 |
+ |
if (i >= vres) |
435 |
+ |
goto alldone; |
436 |
|
if (zfd != -1 && i > 0 && |
437 |
< |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
437 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
438 |
|
error(SYSTEM, "z-file seek error in render"); |
439 |
|
pctdone = 100.0*i/vres; |
440 |
|
if (ralrm > 0) /* report init stats */ |
441 |
< |
report(); |
442 |
< |
#ifndef BSD |
441 |
> |
report(0); |
442 |
> |
#ifdef SIGCONT |
443 |
|
else |
394 |
– |
#endif |
444 |
|
signal(SIGCONT, report); |
445 |
< |
ypos = vres-1 - i; |
445 |
> |
#endif |
446 |
> |
ypos = vres-1 - i; /* initialize sampling */ |
447 |
> |
if (directvis) |
448 |
> |
init_drawsources(psample); |
449 |
|
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
450 |
|
/* compute scanlines */ |
451 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
465 |
|
hres, ypos, hstep); |
466 |
|
/* fill bar */ |
467 |
|
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
468 |
+ |
if (directvis) /* add bitty sources */ |
469 |
+ |
drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
470 |
|
/* write it out */ |
471 |
< |
#ifndef BSD |
471 |
> |
#ifdef SIGCONT |
472 |
|
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
473 |
|
#endif |
474 |
|
for (i = ystep; i > 0; i--) { |
484 |
|
/* record progress */ |
485 |
|
pctdone = 100.0*(vres-1-ypos)/vres; |
486 |
|
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
487 |
< |
report(); |
488 |
< |
#ifndef BSD |
487 |
> |
report(0); |
488 |
> |
#ifdef SIGCONT |
489 |
|
else |
490 |
|
signal(SIGCONT, report); |
491 |
|
#endif |
492 |
|
} |
493 |
|
/* clean up */ |
494 |
+ |
#ifdef SIGCONT |
495 |
|
signal(SIGCONT, SIG_IGN); |
496 |
< |
if (zfd != -1) { |
497 |
< |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
496 |
> |
#endif |
497 |
> |
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
498 |
|
< hres*sizeof(float)) |
499 |
< |
goto writerr; |
499 |
> |
goto writerr; |
500 |
> |
fwritescan(scanbar[0], hres, stdout); |
501 |
> |
if (fflush(stdout) == EOF) |
502 |
> |
goto writerr; |
503 |
> |
alldone: |
504 |
> |
if (zfd != -1) { |
505 |
|
if (close(zfd) == -1) |
506 |
|
goto writerr; |
507 |
|
for (i = 0; i <= psample; i++) |
508 |
< |
free((char *)zbar[i]); |
508 |
> |
free((void *)zbar[i]); |
509 |
|
} |
450 |
– |
fwritescan(scanbar[0], hres, stdout); |
451 |
– |
if (fflush(stdout) == EOF) |
452 |
– |
goto writerr; |
510 |
|
for (i = 0; i <= psample; i++) |
511 |
< |
free((char *)scanbar[i]); |
511 |
> |
free((void *)scanbar[i]); |
512 |
|
if (sampdens != NULL) |
513 |
|
free(sampdens); |
514 |
|
pctdone = 100.0; |
515 |
|
if (ralrm > 0) |
516 |
< |
report(); |
516 |
> |
report(0); |
517 |
> |
#ifdef SIGCONT |
518 |
|
signal(SIGCONT, SIG_DFL); |
519 |
+ |
#endif |
520 |
|
return; |
521 |
|
writerr: |
522 |
|
error(SYSTEM, "write error in render"); |
525 |
|
} |
526 |
|
|
527 |
|
|
528 |
< |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
529 |
< |
register COLOR *scanline; |
530 |
< |
register float *zline; |
531 |
< |
register char *sd; |
532 |
< |
int xres, y, xstep; |
528 |
> |
static void |
529 |
> |
fillscanline( /* fill scan at y */ |
530 |
> |
register COLOR *scanline, |
531 |
> |
register float *zline, |
532 |
> |
register char *sd, |
533 |
> |
int xres, |
534 |
> |
int y, |
535 |
> |
int xstep |
536 |
> |
) |
537 |
|
{ |
538 |
|
static int nc = 0; /* number of calls */ |
539 |
|
int bl = xstep, b = xstep; |
540 |
|
double z; |
541 |
|
register int i; |
542 |
< |
|
542 |
> |
|
543 |
|
z = pixvalue(scanline[0], 0, y); |
544 |
|
if (zline) zline[0] = z; |
545 |
|
/* zig-zag start for quincunx pattern */ |
555 |
|
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
556 |
|
else |
557 |
|
b = fillsample(scanline+i-xstep, |
558 |
< |
zline ? zline+i-xstep : NULL, |
558 |
> |
zline ? zline+i-xstep : (float *)NULL, |
559 |
|
i-xstep, y, xstep, 0, b/2); |
560 |
|
if (sd) *sd++ = nc & 1 ? bl : b; |
561 |
|
bl = b; |
564 |
|
} |
565 |
|
|
566 |
|
|
567 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
568 |
< |
register COLOR *scanbar[]; |
569 |
< |
register float *zbar[]; |
570 |
< |
int xres, y, ysize; |
567 |
> |
static void |
568 |
> |
fillscanbar( /* fill interior */ |
569 |
> |
register COLOR *scanbar[], |
570 |
> |
register float *zbar[], |
571 |
> |
int xres, |
572 |
> |
int y, |
573 |
> |
int ysize |
574 |
> |
) |
575 |
|
{ |
576 |
|
COLOR vline[MAXDIV+1]; |
577 |
|
float zline[MAXDIV+1]; |
578 |
|
int b = ysize; |
579 |
|
register int i, j; |
580 |
< |
|
580 |
> |
|
581 |
|
for (i = 0; i < xres; i++) { |
515 |
– |
|
582 |
|
copycolor(vline[0], scanbar[0][i]); |
583 |
|
copycolor(vline[ysize], scanbar[ysize][i]); |
584 |
|
if (zbar[0]) { |
585 |
|
zline[0] = zbar[0][i]; |
586 |
|
zline[ysize] = zbar[ysize][i]; |
587 |
|
} |
588 |
< |
|
523 |
< |
b = fillsample(vline, zbar[0] ? zline : NULL, |
588 |
> |
b = fillsample(vline, zbar[0] ? zline : (float *)NULL, |
589 |
|
i, y, 0, ysize, b/2); |
590 |
< |
|
590 |
> |
|
591 |
|
for (j = 1; j < ysize; j++) |
592 |
|
copycolor(scanbar[j][i], vline[j]); |
593 |
|
if (zbar[0]) |
597 |
|
} |
598 |
|
|
599 |
|
|
600 |
< |
int |
601 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
602 |
< |
register COLOR *colline; |
603 |
< |
register float *zline; |
604 |
< |
int x, y; |
605 |
< |
int xlen, ylen; |
606 |
< |
int b; |
600 |
> |
static int |
601 |
> |
fillsample( /* fill interior points */ |
602 |
> |
register COLOR *colline, |
603 |
> |
register float *zline, |
604 |
> |
int x, |
605 |
> |
int y, |
606 |
> |
int xlen, |
607 |
> |
int ylen, |
608 |
> |
int b |
609 |
> |
) |
610 |
|
{ |
611 |
|
double ratio; |
612 |
|
double z; |
613 |
|
COLOR ctmp; |
614 |
|
int ncut; |
615 |
|
register int len; |
616 |
< |
|
616 |
> |
|
617 |
|
if (xlen > 0) /* x or y length is zero */ |
618 |
|
len = xlen; |
619 |
|
else |
620 |
|
len = ylen; |
621 |
< |
|
621 |
> |
|
622 |
|
if (len <= 1) /* limit recursion */ |
623 |
|
return(0); |
624 |
< |
|
625 |
< |
if (b > 0 |
626 |
< |
|| (zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
624 |
> |
|
625 |
> |
if (b > 0 || |
626 |
> |
(zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
627 |
|
|| bigdiff(colline[0], colline[len], maxdiff)) { |
628 |
< |
|
628 |
> |
|
629 |
|
z = pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
630 |
|
if (zline) zline[len>>1] = z; |
631 |
|
ncut = 1; |
564 |
– |
|
632 |
|
} else { /* interpolate */ |
566 |
– |
|
633 |
|
copycolor(colline[len>>1], colline[len]); |
634 |
|
ratio = (double)(len>>1) / len; |
635 |
|
scalecolor(colline[len>>1], ratio); |
643 |
|
} |
644 |
|
/* recurse */ |
645 |
|
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
646 |
< |
|
647 |
< |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
646 |
> |
|
647 |
> |
ncut += fillsample(colline+(len>>1), |
648 |
> |
zline ? zline+(len>>1) : (float *)NULL, |
649 |
|
x+(xlen>>1), y+(ylen>>1), |
650 |
|
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
651 |
|
|
653 |
|
} |
654 |
|
|
655 |
|
|
656 |
< |
double |
657 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
658 |
< |
COLOR col; /* returned color */ |
659 |
< |
int x, y; /* pixel position */ |
656 |
> |
static double |
657 |
> |
pixvalue( /* compute pixel value */ |
658 |
> |
COLOR col, /* returned color */ |
659 |
> |
int x, /* pixel position */ |
660 |
> |
int y |
661 |
> |
) |
662 |
|
{ |
663 |
< |
static RAY thisray; |
664 |
< |
|
665 |
< |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
666 |
< |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
663 |
> |
RAY thisray; |
664 |
> |
FVECT lorg, ldir; |
665 |
> |
double hpos, vpos, lmax; |
666 |
> |
/* compute view ray */ |
667 |
> |
hpos = (x+pixjitter())/hres; |
668 |
> |
vpos = (y+pixjitter())/vres; |
669 |
> |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
670 |
> |
&ourview, hpos, vpos)) < -FTINY) { |
671 |
|
setcolor(col, 0.0, 0.0, 0.0); |
672 |
|
return(0.0); |
673 |
|
} |
674 |
|
|
602 |
– |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
603 |
– |
|
675 |
|
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
676 |
|
|
677 |
+ |
/* optional motion blur */ |
678 |
+ |
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
679 |
+ |
&lastview, hpos, vpos)) >= -FTINY) { |
680 |
+ |
register int i; |
681 |
+ |
register 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 |
+ |
} |
691 |
+ |
|
692 |
+ |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
693 |
+ |
|
694 |
|
rayvalue(&thisray); /* trace ray */ |
695 |
|
|
696 |
|
copycolor(col, thisray.rcol); /* return color */ |
697 |
< |
|
697 |
> |
|
698 |
|
return(thisray.rt); /* return distance */ |
699 |
|
} |
700 |
|
|
701 |
|
|
702 |
< |
int |
703 |
< |
salvage(oldfile) /* salvage scanlines from killed program */ |
704 |
< |
char *oldfile; |
702 |
> |
static int |
703 |
> |
salvage( /* salvage scanlines from killed program */ |
704 |
> |
char *oldfile |
705 |
> |
) |
706 |
|
{ |
707 |
|
COLR *scanline; |
708 |
|
FILE *fp; |
709 |
|
int x, y; |
710 |
|
|
711 |
|
if (oldfile == NULL) |
712 |
< |
return(0); |
713 |
< |
|
712 |
> |
goto gotzip; |
713 |
> |
|
714 |
|
if ((fp = fopen(oldfile, "r")) == NULL) { |
715 |
|
sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
716 |
|
error(WARNING, errmsg); |
717 |
< |
return(0); |
717 |
> |
goto gotzip; |
718 |
|
} |
719 |
< |
#ifdef MSDOS |
631 |
< |
setmode(fileno(fp), O_BINARY); |
632 |
< |
#endif |
719 |
> |
SET_FILE_BINARY(fp); |
720 |
|
/* discard header */ |
721 |
|
getheader(fp, NULL, NULL); |
722 |
|
/* get picture size */ |
725 |
|
oldfile); |
726 |
|
error(WARNING, errmsg); |
727 |
|
fclose(fp); |
728 |
< |
return(0); |
728 |
> |
goto gotzip; |
729 |
|
} |
730 |
|
|
731 |
|
if (x != hres || y != vres) { |
745 |
|
} |
746 |
|
if (fflush(stdout) == EOF) |
747 |
|
goto writerr; |
748 |
< |
free((char *)scanline); |
748 |
> |
free((void *)scanline); |
749 |
|
fclose(fp); |
750 |
|
unlink(oldfile); |
751 |
|
return(y); |
752 |
+ |
gotzip: |
753 |
+ |
if (fflush(stdout) == EOF) |
754 |
+ |
error(SYSTEM, "error writing picture header"); |
755 |
+ |
return(0); |
756 |
|
writerr: |
757 |
|
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
758 |
|
error(SYSTEM, errmsg); |
759 |
+ |
return -1; /* pro forma return */ |
760 |
|
} |
761 |
|
|
762 |
|
|
763 |
< |
int |
764 |
< |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
765 |
< |
register int x, y; |
766 |
< |
int xres, yres; |
763 |
> |
static int |
764 |
> |
pixnumber( /* compute pixel index (brushed) */ |
765 |
> |
register int x, |
766 |
> |
register int y, |
767 |
> |
int xres, |
768 |
> |
int yres |
769 |
> |
) |
770 |
|
{ |
771 |
|
x -= y; |
772 |
|
while (x < 0) |