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/* Copyright (c) 1992 Regents of the University of California */ |
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|
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#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
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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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< |
#ifndef NIX |
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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> |
| 16 |
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#else |
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#include <sys/types.h> |
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#include <sys/times.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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+ |
#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 |
| 38 |
+ |
#ifdef SIGIO /* XXX can we live without this? */ |
| 39 |
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#define SIGCONT SIGIO |
| 40 |
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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 */ |
| 61 |
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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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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 */ |
| 80 |
+ |
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 */ |
| 99 |
> |
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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|
| 104 |
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double pctdone = 0.0; /* percentage done */ |
| 105 |
+ |
time_t tlastrept = 0L; /* time at last report */ |
| 106 |
+ |
time_t tstart; /* starting time */ |
| 107 |
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|
| 108 |
< |
long tlastrept = 0L; /* time at last report */ |
| 108 |
> |
#define MAXDIV 16 /* maximum sample size */ |
| 109 |
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|
| 110 |
< |
extern long time(); |
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< |
extern long tstart; /* starting time */ |
| 110 |
> |
#define pixjitter() (.5+dstrpix*(.5-frandom())) |
| 111 |
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|
| 112 |
< |
extern unsigned long nrays; /* number of rays traced */ |
| 112 |
> |
int hres, vres; /* resolution for this frame */ |
| 113 |
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|
| 114 |
< |
#define MAXDIV 16 /* maximum sample size */ |
| 114 |
> |
static VIEW lastview; /* the previous view input */ |
| 115 |
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|
| 116 |
< |
#define pixjitter() (.5+dstrpix*(.5-frandom())) |
| 116 |
> |
//extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
| 117 |
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|
| 118 |
< |
static int hres, vres; /* resolution for this frame */ |
| 118 |
> |
//double pixvalue(); |
| 119 |
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|
| 120 |
< |
extern char *mktemp(); |
| 120 |
> |
static void report(int); |
| 121 |
> |
static int nextview(FILE *fp); |
| 122 |
> |
static void render(char *zfile, char *oldfile); |
| 123 |
> |
static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
| 124 |
> |
int y, int xstep); |
| 125 |
> |
static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
| 126 |
> |
int y, int ysize); |
| 127 |
> |
static int fillsample(COLOR *colline, float *zline, int x, int y, |
| 128 |
> |
int xlen, int ylen, int b); |
| 129 |
> |
static double pixvalue(COLOR col, int x, int y); |
| 130 |
> |
static int salvage(char *oldfile); |
| 131 |
> |
static int pixnumber(int x, int y, int xres, int yres); |
| 132 |
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|
| 101 |
– |
double pixvalue(); |
| 133 |
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|
| 134 |
< |
#ifdef NIX |
| 135 |
< |
#define file_exists(f) (access(f,F_OK)==0) |
| 105 |
< |
#else |
| 134 |
> |
|
| 135 |
> |
#ifdef RHAS_STAT |
| 136 |
|
#include <sys/types.h> |
| 137 |
|
#include <sys/stat.h> |
| 138 |
|
int |
| 143 |
|
if (stat(fname, &sbuf) < 0) return(0); |
| 144 |
|
return((sbuf.st_mode & S_IFREG) != 0); |
| 145 |
|
} |
| 146 |
+ |
#else |
| 147 |
+ |
#define file_exists(f) (access(f,F_OK)==0) |
| 148 |
|
#endif |
| 149 |
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|
| 150 |
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|
| 151 |
+ |
void |
| 152 |
|
quit(code) /* quit program */ |
| 153 |
|
int code; |
| 154 |
|
{ |
| 155 |
|
if (code) /* report status */ |
| 156 |
< |
report(); |
| 156 |
> |
report(0); |
| 157 |
> |
#ifndef NON_POSIX |
| 158 |
|
headclean(); /* delete header file */ |
| 159 |
|
pfclean(); /* clean up persist files */ |
| 160 |
+ |
#endif |
| 161 |
|
exit(code); |
| 162 |
|
} |
| 163 |
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|
| 164 |
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|
| 165 |
< |
#ifndef NIX |
| 166 |
< |
report() /* report progress */ |
| 165 |
> |
#ifndef NON_POSIX |
| 166 |
> |
static void |
| 167 |
> |
report(int dummy) /* report progress */ |
| 168 |
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{ |
| 133 |
– |
char hostname[128]; |
| 169 |
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double u, s; |
| 170 |
|
#ifdef BSD |
| 171 |
|
struct rusage rubuf; |
| 172 |
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#else |
| 173 |
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struct tms tbuf; |
| 174 |
+ |
double period; |
| 175 |
|
#endif |
| 176 |
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|
| 177 |
< |
tlastrept = time((long *)0); |
| 177 |
> |
tlastrept = time((time_t *)NULL); |
| 178 |
|
#ifdef BSD |
| 179 |
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getrusage(RUSAGE_SELF, &rubuf); |
| 180 |
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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; |
| 185 |
|
#else |
| 186 |
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times(&tbuf); |
| 187 |
< |
u = ( tbuf.tms_utime + tbuf.tms_cutime ) / CLK_TCK; |
| 188 |
< |
s = ( tbuf.tms_stime + tbuf.tms_cstime ) / CLK_TCK; |
| 187 |
> |
#ifdef _SC_CLK_TCK |
| 188 |
> |
period = 1.0 / sysconf(_SC_CLK_TCK); |
| 189 |
> |
#else |
| 190 |
> |
period = 1.0 / 60.0; |
| 191 |
|
#endif |
| 192 |
< |
gethostname(hostname, sizeof(hostname)); |
| 192 |
> |
u = ( tbuf.tms_utime + tbuf.tms_cutime ) * period; |
| 193 |
> |
s = ( tbuf.tms_stime + tbuf.tms_cstime ) * period; |
| 194 |
> |
#endif |
| 195 |
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|
| 196 |
|
sprintf(errmsg, |
| 197 |
|
"%lu rays, %4.2f%% after %.3fu %.3fs %.3fr hours on %s\n", |
| 198 |
|
nrays, pctdone, u/3600., s/3600., |
| 199 |
< |
(tlastrept-tstart)/3600., hostname); |
| 199 |
> |
(tlastrept-tstart)/3600., myhostname()); |
| 200 |
|
eputs(errmsg); |
| 201 |
+ |
#ifdef SIGCONT |
| 202 |
+ |
signal(SIGCONT, report); |
| 203 |
+ |
#endif |
| 204 |
|
} |
| 205 |
|
#else |
| 206 |
< |
report() /* report progress */ |
| 206 |
> |
static void |
| 207 |
> |
report(int dummy) /* report progress */ |
| 208 |
|
{ |
| 209 |
< |
tlastrept = time((long *)0); |
| 209 |
> |
tlastrept = time((time_t *)NULL); |
| 210 |
|
sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
| 211 |
|
nrays, pctdone, (tlastrept-tstart)/3600.0); |
| 212 |
|
eputs(errmsg); |
| 169 |
– |
signal(SIGCONT, report); |
| 213 |
|
} |
| 214 |
|
#endif |
| 215 |
|
|
| 216 |
|
|
| 217 |
< |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
| 218 |
< |
int seq; |
| 219 |
< |
char *pout, *zout, *prvr; |
| 217 |
> |
extern void |
| 218 |
> |
rpict( /* generate image(s) */ |
| 219 |
> |
int seq, |
| 220 |
> |
char *pout, |
| 221 |
> |
char *zout, |
| 222 |
> |
char *prvr |
| 223 |
> |
) |
| 224 |
|
/* |
| 225 |
|
* If seq is greater than zero, then we will render a sequence of |
| 226 |
|
* images based on view parameter strings read from the standard input. |
| 233 |
|
* sequenced file naming. |
| 234 |
|
*/ |
| 235 |
|
{ |
| 189 |
– |
extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
| 236 |
|
char fbuf[128], fbuf2[128]; |
| 237 |
|
int npicts; |
| 238 |
|
register char *cp; |
| 259 |
|
for ( ; seq < rn; seq++) |
| 260 |
|
if (nextview(stdin) == EOF) |
| 261 |
|
error(USER, "unexpected EOF on view input"); |
| 262 |
+ |
setview(&ourview); |
| 263 |
|
prvr = fbuf; /* mark for renaming */ |
| 264 |
|
} |
| 265 |
< |
if (pout != NULL & prvr != NULL) { |
| 265 |
> |
if ((pout != NULL) & (prvr != NULL)) { |
| 266 |
|
sprintf(fbuf, pout, seq); |
| 267 |
|
if (!strcmp(prvr, fbuf)) { /* rename */ |
| 268 |
|
strcpy(fbuf2, fbuf); |
| 272 |
|
cp--; |
| 273 |
|
strcpy(cp, RFTEMPLATE); |
| 274 |
|
prvr = mktemp(fbuf2); |
| 275 |
< |
if (rename(fbuf, prvr) < 0) |
| 275 |
> |
if (rename(fbuf, prvr) < 0) { |
| 276 |
|
if (errno == ENOENT) { /* ghost file */ |
| 277 |
|
sprintf(errmsg, |
| 278 |
|
"new output file \"%s\"", |
| 285 |
|
fbuf, prvr); |
| 286 |
|
error(SYSTEM, errmsg); |
| 287 |
|
} |
| 288 |
+ |
} |
| 289 |
|
} |
| 290 |
|
} |
| 291 |
|
npicts = 0; /* render sequence */ |
| 302 |
|
fbuf); |
| 303 |
|
error(USER, errmsg); |
| 304 |
|
} |
| 305 |
+ |
setview(&ourview); |
| 306 |
|
continue; /* don't clobber */ |
| 307 |
|
} |
| 308 |
|
if (freopen(fbuf, "w", stdout) == NULL) { |
| 310 |
|
"cannot open output file \"%s\"", fbuf); |
| 311 |
|
error(SYSTEM, errmsg); |
| 312 |
|
} |
| 313 |
< |
#ifdef MSDOS |
| 265 |
< |
setmode(fileno(stdout), O_BINARY); |
| 266 |
< |
#endif |
| 313 |
> |
SET_FILE_BINARY(stdout); |
| 314 |
|
dupheader(); |
| 315 |
|
} |
| 316 |
|
hres = hresolu; vres = vresolu; pa = pixaspect; |
| 317 |
< |
if (prvr != NULL) |
| 318 |
< |
if (viewfile(prvr, &ourview, &rs) <= 0 |
| 272 |
< |
|| rs.or != PIXSTANDARD) { |
| 317 |
> |
if (prvr != NULL) { |
| 318 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
| 319 |
|
sprintf(errmsg, |
| 320 |
|
"cannot recover view parameters from \"%s\"", prvr); |
| 321 |
|
error(WARNING, errmsg); |
| 324 |
|
hres = scanlen(&rs); |
| 325 |
|
vres = numscans(&rs); |
| 326 |
|
} |
| 327 |
+ |
} |
| 328 |
|
if ((cp = setview(&ourview)) != NULL) |
| 329 |
|
error(USER, cp); |
| 330 |
|
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
| 342 |
|
putchar('\n'); |
| 343 |
|
if (pa < .99 || pa > 1.01) |
| 344 |
|
fputaspect(pa, stdout); |
| 345 |
+ |
fputnow(stdout); |
| 346 |
|
fputformat(COLRFMT, stdout); |
| 347 |
|
putchar('\n'); |
| 348 |
|
if (zout != NULL) |
| 359 |
|
} |
| 360 |
|
|
| 361 |
|
|
| 362 |
< |
nextview(fp) /* get next view from fp */ |
| 363 |
< |
FILE *fp; |
| 362 |
> |
static int |
| 363 |
> |
nextview( /* get next view from fp */ |
| 364 |
> |
FILE *fp |
| 365 |
> |
) |
| 366 |
|
{ |
| 367 |
|
char linebuf[256]; |
| 368 |
|
|
| 369 |
+ |
lastview = ourview; |
| 370 |
|
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
| 371 |
|
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
| 372 |
|
return(0); |
| 374 |
|
} |
| 375 |
|
|
| 376 |
|
|
| 377 |
< |
render(zfile, oldfile) /* render the scene */ |
| 378 |
< |
char *zfile, *oldfile; |
| 377 |
> |
static void |
| 378 |
> |
render( /* render the scene */ |
| 379 |
> |
char *zfile, |
| 380 |
> |
char *oldfile |
| 381 |
> |
) |
| 382 |
|
{ |
| 329 |
– |
extern long lseek(); |
| 383 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
| 384 |
|
float *zbar[MAXDIV+1]; /* z values */ |
| 385 |
|
char *sampdens; /* previous sample density */ |
| 390 |
|
COLOR *colptr; |
| 391 |
|
float *zptr; |
| 392 |
|
register int i; |
| 393 |
+ |
/* check for empty image */ |
| 394 |
+ |
if (hres <= 0 || vres <= 0) { |
| 395 |
+ |
error(WARNING, "empty output picture"); |
| 396 |
+ |
fprtresolu(0, 0, stdout); |
| 397 |
+ |
return; |
| 398 |
+ |
} |
| 399 |
|
/* allocate scanlines */ |
| 400 |
|
for (i = 0; i <= psample; i++) { |
| 401 |
|
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
| 406 |
|
ystep = (psample*99+70)/140; |
| 407 |
|
if (hstep > 2) { |
| 408 |
|
i = hres/hstep + 2; |
| 409 |
< |
if ((sampdens = malloc(i)) == NULL) |
| 409 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
| 410 |
|
goto memerr; |
| 411 |
|
while (i--) |
| 412 |
|
sampdens[i] = hstep; |
| 418 |
|
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
| 419 |
|
error(SYSTEM, errmsg); |
| 420 |
|
} |
| 421 |
< |
#ifdef MSDOS |
| 363 |
< |
setmode(zfd, O_BINARY); |
| 364 |
< |
#endif |
| 421 |
> |
SET_FD_BINARY(zfd); |
| 422 |
|
for (i = 0; i <= psample; i++) { |
| 423 |
|
zbar[i] = (float *)malloc(hres*sizeof(float)); |
| 424 |
|
if (zbar[i] == NULL) |
| 433 |
|
fprtresolu(hres, vres, stdout); |
| 434 |
|
/* recover file and compute first */ |
| 435 |
|
i = salvage(oldfile); |
| 436 |
+ |
if (i >= vres) |
| 437 |
+ |
goto alldone; |
| 438 |
|
if (zfd != -1 && i > 0 && |
| 439 |
< |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
| 439 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
| 440 |
|
error(SYSTEM, "z-file seek error in render"); |
| 441 |
|
pctdone = 100.0*i/vres; |
| 442 |
|
if (ralrm > 0) /* report init stats */ |
| 443 |
< |
report(); |
| 444 |
< |
#ifndef BSD |
| 443 |
> |
report(0); |
| 444 |
> |
#ifdef SIGCONT |
| 445 |
|
else |
| 387 |
– |
#endif |
| 446 |
|
signal(SIGCONT, report); |
| 447 |
< |
ypos = vres-1 - i; |
| 447 |
> |
#endif |
| 448 |
> |
ypos = vres-1 - i; /* initialize sampling */ |
| 449 |
> |
if (directvis) |
| 450 |
> |
init_drawsources(psample); |
| 451 |
|
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
| 452 |
|
/* compute scanlines */ |
| 453 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
| 467 |
|
hres, ypos, hstep); |
| 468 |
|
/* fill bar */ |
| 469 |
|
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
| 470 |
+ |
if (directvis) /* add bitty sources */ |
| 471 |
+ |
drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
| 472 |
|
/* write it out */ |
| 473 |
< |
#ifndef BSD |
| 473 |
> |
#ifdef SIGCONT |
| 474 |
|
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
| 475 |
|
#endif |
| 476 |
|
for (i = ystep; i > 0; i--) { |
| 485 |
|
goto writerr; |
| 486 |
|
/* record progress */ |
| 487 |
|
pctdone = 100.0*(vres-1-ypos)/vres; |
| 488 |
< |
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
| 489 |
< |
report(); |
| 490 |
< |
#ifndef BSD |
| 488 |
> |
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
| 489 |
> |
report(0); |
| 490 |
> |
#ifdef SIGCONT |
| 491 |
|
else |
| 492 |
|
signal(SIGCONT, report); |
| 493 |
|
#endif |
| 494 |
|
} |
| 495 |
|
/* clean up */ |
| 496 |
+ |
#ifdef SIGCONT |
| 497 |
|
signal(SIGCONT, SIG_IGN); |
| 498 |
< |
if (zfd != -1) { |
| 499 |
< |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
| 498 |
> |
#endif |
| 499 |
> |
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
| 500 |
|
< hres*sizeof(float)) |
| 501 |
< |
goto writerr; |
| 501 |
> |
goto writerr; |
| 502 |
> |
fwritescan(scanbar[0], hres, stdout); |
| 503 |
> |
if (fflush(stdout) == EOF) |
| 504 |
> |
goto writerr; |
| 505 |
> |
alldone: |
| 506 |
> |
if (zfd != -1) { |
| 507 |
|
if (close(zfd) == -1) |
| 508 |
|
goto writerr; |
| 509 |
|
for (i = 0; i <= psample; i++) |
| 510 |
< |
free((char *)zbar[i]); |
| 510 |
> |
free((void *)zbar[i]); |
| 511 |
|
} |
| 443 |
– |
fwritescan(scanbar[0], hres, stdout); |
| 444 |
– |
if (fflush(stdout) == EOF) |
| 445 |
– |
goto writerr; |
| 512 |
|
for (i = 0; i <= psample; i++) |
| 513 |
< |
free((char *)scanbar[i]); |
| 513 |
> |
free((void *)scanbar[i]); |
| 514 |
|
if (sampdens != NULL) |
| 515 |
|
free(sampdens); |
| 516 |
|
pctdone = 100.0; |
| 517 |
|
if (ralrm > 0) |
| 518 |
< |
report(); |
| 518 |
> |
report(0); |
| 519 |
> |
#ifdef SIGCONT |
| 520 |
|
signal(SIGCONT, SIG_DFL); |
| 521 |
+ |
#endif |
| 522 |
|
return; |
| 523 |
|
writerr: |
| 524 |
|
error(SYSTEM, "write error in render"); |
| 527 |
|
} |
| 528 |
|
|
| 529 |
|
|
| 530 |
< |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
| 531 |
< |
register COLOR *scanline; |
| 532 |
< |
register float *zline; |
| 533 |
< |
register char *sd; |
| 534 |
< |
int xres, y, xstep; |
| 530 |
> |
static void |
| 531 |
> |
fillscanline( /* fill scan at y */ |
| 532 |
> |
register COLOR *scanline, |
| 533 |
> |
register float *zline, |
| 534 |
> |
register char *sd, |
| 535 |
> |
int xres, |
| 536 |
> |
int y, |
| 537 |
> |
int xstep |
| 538 |
> |
) |
| 539 |
|
{ |
| 540 |
|
static int nc = 0; /* number of calls */ |
| 541 |
|
int bl = xstep, b = xstep; |
| 542 |
|
double z; |
| 543 |
|
register int i; |
| 544 |
< |
|
| 544 |
> |
|
| 545 |
|
z = pixvalue(scanline[0], 0, y); |
| 546 |
|
if (zline) zline[0] = z; |
| 547 |
|
/* zig-zag start for quincunx pattern */ |
| 557 |
|
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
| 558 |
|
else |
| 559 |
|
b = fillsample(scanline+i-xstep, |
| 560 |
< |
zline ? zline+i-xstep : NULL, |
| 560 |
> |
zline ? zline+i-xstep : (float *)NULL, |
| 561 |
|
i-xstep, y, xstep, 0, b/2); |
| 562 |
|
if (sd) *sd++ = nc & 1 ? bl : b; |
| 563 |
|
bl = b; |
| 566 |
|
} |
| 567 |
|
|
| 568 |
|
|
| 569 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
| 570 |
< |
register COLOR *scanbar[]; |
| 571 |
< |
register float *zbar[]; |
| 572 |
< |
int xres, y, ysize; |
| 569 |
> |
static void |
| 570 |
> |
fillscanbar( /* fill interior */ |
| 571 |
> |
register COLOR *scanbar[], |
| 572 |
> |
register float *zbar[], |
| 573 |
> |
int xres, |
| 574 |
> |
int y, |
| 575 |
> |
int ysize |
| 576 |
> |
) |
| 577 |
|
{ |
| 578 |
|
COLOR vline[MAXDIV+1]; |
| 579 |
|
float zline[MAXDIV+1]; |
| 580 |
|
int b = ysize; |
| 581 |
|
register int i, j; |
| 582 |
< |
|
| 582 |
> |
|
| 583 |
|
for (i = 0; i < xres; i++) { |
| 508 |
– |
|
| 584 |
|
copycolor(vline[0], scanbar[0][i]); |
| 585 |
|
copycolor(vline[ysize], scanbar[ysize][i]); |
| 586 |
|
if (zbar[0]) { |
| 587 |
|
zline[0] = zbar[0][i]; |
| 588 |
|
zline[ysize] = zbar[ysize][i]; |
| 589 |
|
} |
| 590 |
< |
|
| 516 |
< |
b = fillsample(vline, zbar[0] ? zline : NULL, |
| 590 |
> |
b = fillsample(vline, zbar[0] ? zline : (float *)NULL, |
| 591 |
|
i, y, 0, ysize, b/2); |
| 592 |
< |
|
| 592 |
> |
|
| 593 |
|
for (j = 1; j < ysize; j++) |
| 594 |
|
copycolor(scanbar[j][i], vline[j]); |
| 595 |
|
if (zbar[0]) |
| 599 |
|
} |
| 600 |
|
|
| 601 |
|
|
| 602 |
< |
int |
| 603 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
| 604 |
< |
register COLOR *colline; |
| 605 |
< |
register float *zline; |
| 606 |
< |
int x, y; |
| 607 |
< |
int xlen, ylen; |
| 608 |
< |
int b; |
| 602 |
> |
static int |
| 603 |
> |
fillsample( /* fill interior points */ |
| 604 |
> |
register COLOR *colline, |
| 605 |
> |
register float *zline, |
| 606 |
> |
int x, |
| 607 |
> |
int y, |
| 608 |
> |
int xlen, |
| 609 |
> |
int ylen, |
| 610 |
> |
int b |
| 611 |
> |
) |
| 612 |
|
{ |
| 613 |
|
double ratio; |
| 614 |
|
double z; |
| 615 |
|
COLOR ctmp; |
| 616 |
|
int ncut; |
| 617 |
|
register int len; |
| 618 |
< |
|
| 618 |
> |
|
| 619 |
|
if (xlen > 0) /* x or y length is zero */ |
| 620 |
|
len = xlen; |
| 621 |
|
else |
| 622 |
|
len = ylen; |
| 623 |
< |
|
| 623 |
> |
|
| 624 |
|
if (len <= 1) /* limit recursion */ |
| 625 |
|
return(0); |
| 626 |
< |
|
| 627 |
< |
if (b > 0 |
| 628 |
< |
|| (zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
| 626 |
> |
|
| 627 |
> |
if (b > 0 || |
| 628 |
> |
(zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
| 629 |
|
|| bigdiff(colline[0], colline[len], maxdiff)) { |
| 630 |
< |
|
| 630 |
> |
|
| 631 |
|
z = pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
| 632 |
|
if (zline) zline[len>>1] = z; |
| 633 |
|
ncut = 1; |
| 557 |
– |
|
| 634 |
|
} else { /* interpolate */ |
| 559 |
– |
|
| 635 |
|
copycolor(colline[len>>1], colline[len]); |
| 636 |
|
ratio = (double)(len>>1) / len; |
| 637 |
|
scalecolor(colline[len>>1], ratio); |
| 645 |
|
} |
| 646 |
|
/* recurse */ |
| 647 |
|
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
| 648 |
< |
|
| 649 |
< |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
| 648 |
> |
|
| 649 |
> |
ncut += fillsample(colline+(len>>1), |
| 650 |
> |
zline ? zline+(len>>1) : (float *)NULL, |
| 651 |
|
x+(xlen>>1), y+(ylen>>1), |
| 652 |
|
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
| 653 |
|
|
| 655 |
|
} |
| 656 |
|
|
| 657 |
|
|
| 658 |
< |
double |
| 659 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
| 660 |
< |
COLOR col; /* returned color */ |
| 661 |
< |
int x, y; /* pixel position */ |
| 658 |
> |
static double |
| 659 |
> |
pixvalue( /* compute pixel value */ |
| 660 |
> |
COLOR col, /* returned color */ |
| 661 |
> |
int x, /* pixel position */ |
| 662 |
> |
int y |
| 663 |
> |
) |
| 664 |
|
{ |
| 665 |
< |
static RAY thisray; |
| 666 |
< |
|
| 667 |
< |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
| 668 |
< |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
| 665 |
> |
RAY thisray; |
| 666 |
> |
FVECT lorg, ldir; |
| 667 |
> |
double hpos, vpos, vdist, lmax; |
| 668 |
> |
register int i; |
| 669 |
> |
/* compute view ray */ |
| 670 |
> |
hpos = (x+pixjitter())/hres; |
| 671 |
> |
vpos = (y+pixjitter())/vres; |
| 672 |
> |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
| 673 |
> |
&ourview, hpos, vpos)) < -FTINY) { |
| 674 |
|
setcolor(col, 0.0, 0.0, 0.0); |
| 675 |
|
return(0.0); |
| 676 |
|
} |
| 677 |
+ |
vdist = ourview.vdist; |
| 678 |
|
|
| 595 |
– |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
| 596 |
– |
|
| 679 |
|
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
| 680 |
|
|
| 681 |
+ |
/* optional motion blur */ |
| 682 |
+ |
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
| 683 |
+ |
&lastview, hpos, vpos)) >= -FTINY) { |
| 684 |
+ |
register double d = mblur*(.5-urand(281+samplendx)); |
| 685 |
+ |
|
| 686 |
+ |
thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
| 687 |
+ |
for (i = 3; i--; ) { |
| 688 |
+ |
thisray.rorg[i] = (1.-d)*thisray.rorg[i] + d*lorg[i]; |
| 689 |
+ |
thisray.rdir[i] = (1.-d)*thisray.rdir[i] + d*ldir[i]; |
| 690 |
+ |
} |
| 691 |
+ |
if (normalize(thisray.rdir) == 0.0) |
| 692 |
+ |
return(0.0); |
| 693 |
+ |
vdist = (1.-d)*vdist + d*lastview.vdist; |
| 694 |
+ |
} |
| 695 |
+ |
/* optional depth-of-field */ |
| 696 |
+ |
if (dblur > FTINY && vdist > FTINY) { |
| 697 |
+ |
double vc, df[2]; |
| 698 |
+ |
df[0] = PI/4.*dblur*(.5 - frandom())/sqrt(ourview.hn2); |
| 699 |
+ |
df[1] = PI/4.*dblur*(.5 - frandom())/sqrt(ourview.vn2); |
| 700 |
+ |
for (i = 3; i--; ) { |
| 701 |
+ |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
| 702 |
+ |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
| 703 |
+ |
df[1]*ourview.vvec[i] ; |
| 704 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
| 705 |
+ |
} |
| 706 |
+ |
if (normalize(thisray.rdir) == 0.0) |
| 707 |
+ |
return(0.0); |
| 708 |
+ |
} |
| 709 |
+ |
|
| 710 |
+ |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
| 711 |
+ |
|
| 712 |
|
rayvalue(&thisray); /* trace ray */ |
| 713 |
|
|
| 714 |
|
copycolor(col, thisray.rcol); /* return color */ |
| 715 |
< |
|
| 715 |
> |
|
| 716 |
|
return(thisray.rt); /* return distance */ |
| 717 |
|
} |
| 718 |
|
|
| 719 |
|
|
| 720 |
< |
int |
| 721 |
< |
salvage(oldfile) /* salvage scanlines from killed program */ |
| 722 |
< |
char *oldfile; |
| 720 |
> |
static int |
| 721 |
> |
salvage( /* salvage scanlines from killed program */ |
| 722 |
> |
char *oldfile |
| 723 |
> |
) |
| 724 |
|
{ |
| 725 |
|
COLR *scanline; |
| 726 |
|
FILE *fp; |
| 727 |
|
int x, y; |
| 728 |
|
|
| 729 |
|
if (oldfile == NULL) |
| 730 |
< |
return(0); |
| 731 |
< |
|
| 730 |
> |
goto gotzip; |
| 731 |
> |
|
| 732 |
|
if ((fp = fopen(oldfile, "r")) == NULL) { |
| 733 |
|
sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
| 734 |
|
error(WARNING, errmsg); |
| 735 |
< |
return(0); |
| 735 |
> |
goto gotzip; |
| 736 |
|
} |
| 737 |
< |
#ifdef MSDOS |
| 624 |
< |
setmode(fileno(fp), O_BINARY); |
| 625 |
< |
#endif |
| 737 |
> |
SET_FILE_BINARY(fp); |
| 738 |
|
/* discard header */ |
| 739 |
|
getheader(fp, NULL, NULL); |
| 740 |
|
/* get picture size */ |
| 743 |
|
oldfile); |
| 744 |
|
error(WARNING, errmsg); |
| 745 |
|
fclose(fp); |
| 746 |
< |
return(0); |
| 746 |
> |
goto gotzip; |
| 747 |
|
} |
| 748 |
|
|
| 749 |
|
if (x != hres || y != vres) { |
| 763 |
|
} |
| 764 |
|
if (fflush(stdout) == EOF) |
| 765 |
|
goto writerr; |
| 766 |
< |
free((char *)scanline); |
| 766 |
> |
free((void *)scanline); |
| 767 |
|
fclose(fp); |
| 768 |
|
unlink(oldfile); |
| 769 |
|
return(y); |
| 770 |
+ |
gotzip: |
| 771 |
+ |
if (fflush(stdout) == EOF) |
| 772 |
+ |
error(SYSTEM, "error writing picture header"); |
| 773 |
+ |
return(0); |
| 774 |
|
writerr: |
| 775 |
|
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
| 776 |
|
error(SYSTEM, errmsg); |
| 777 |
+ |
return -1; /* pro forma return */ |
| 778 |
|
} |
| 779 |
|
|
| 780 |
< |
|
| 781 |
< |
int |
| 782 |
< |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
| 783 |
< |
register int x, y; |
| 784 |
< |
int xres, yres; |
| 780 |
> |
static int |
| 781 |
> |
pixnumber( /* compute pixel index (brushed) */ |
| 782 |
> |
register int x, |
| 783 |
> |
register int y, |
| 784 |
> |
int xres, |
| 785 |
> |
int yres |
| 786 |
> |
) |
| 787 |
|
{ |
| 788 |
|
x -= y; |
| 789 |
|
while (x < 0) |
