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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1995 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include "ray.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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#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 <signal.h> |
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#include <sys/times.h> |
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#include <unistd.h> |
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#endif |
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< |
#include <fcntl.h> |
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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 <signal.h> |
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|
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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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|
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#define RFTEMPLATE "rfXXXXXX" |
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|
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#ifndef SIGCONT |
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#define SIGCONT SIGIO |
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#endif |
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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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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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int directrelay = 0; /* number of source relays */ |
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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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double salbedo = 0.; /* 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 = 6; /* maximum recursion depth */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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|
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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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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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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|
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double pctdone = 0.0; /* percentage done */ |
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double pctdone = 0.0; /* percentage done */ |
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|
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long tlastrept = 0L; /* time at last report */ |
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time_t tlastrept = 0L; /* time at last report */ |
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|
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extern long time(); |
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extern long tstart; /* starting time */ |
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extern time_t tstart; /* starting time */ |
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|
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extern long nrays; /* number of rays traced */ |
100 |
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extern unsigned long nrays; /* number of rays traced */ |
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|
102 |
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#define MAXDIV 15 /* maximum sample size */ |
102 |
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#define MAXDIV 16 /* maximum sample size */ |
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|
104 |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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|
106 |
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double pixvalue(); |
106 |
> |
static int hres, vres; /* resolution for this frame */ |
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|
108 |
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extern char *mktemp(); |
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|
110 |
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double pixvalue(); |
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|
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#ifdef NIX |
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#define file_exists(f) (access(f,F_OK)==0) |
114 |
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#else |
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#include <sys/types.h> |
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#include <sys/stat.h> |
117 |
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int |
118 |
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file_exists(fname) /* ordinary file exists? */ |
119 |
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char *fname; |
120 |
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{ |
121 |
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struct stat sbuf; |
122 |
+ |
if (stat(fname, &sbuf) < 0) return(0); |
123 |
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return((sbuf.st_mode & S_IFREG) != 0); |
124 |
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} |
125 |
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#endif |
126 |
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|
127 |
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|
128 |
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quit(code) /* quit program */ |
129 |
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int code; |
130 |
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{ |
131 |
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if (code || ralrm > 0) /* report status */ |
131 |
> |
if (code) /* report status */ |
132 |
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report(); |
133 |
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|
133 |
> |
headclean(); /* delete header file */ |
134 |
> |
pfclean(); /* clean up persist files */ |
135 |
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exit(code); |
136 |
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} |
137 |
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|
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|
139 |
< |
#ifdef BSD |
139 |
> |
#ifndef NIX |
140 |
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report() /* report progress */ |
141 |
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{ |
142 |
+ |
extern char *myhostname(); |
143 |
+ |
double u, s; |
144 |
+ |
#ifdef BSD |
145 |
|
struct rusage rubuf; |
146 |
< |
double t; |
146 |
> |
#else |
147 |
> |
struct tms tbuf; |
148 |
> |
double period; |
149 |
> |
#endif |
150 |
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|
151 |
+ |
tlastrept = time((time_t *)NULL); |
152 |
+ |
#ifdef BSD |
153 |
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getrusage(RUSAGE_SELF, &rubuf); |
154 |
< |
t = (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
155 |
< |
t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
154 |
> |
u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
155 |
> |
s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
156 |
|
getrusage(RUSAGE_CHILDREN, &rubuf); |
157 |
< |
t += (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
158 |
< |
t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
157 |
> |
u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
158 |
> |
s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
159 |
> |
#else |
160 |
> |
times(&tbuf); |
161 |
> |
#ifdef _SC_CLK_TCK |
162 |
> |
period = 1.0 / sysconf(_SC_CLK_TCK); |
163 |
> |
#else |
164 |
> |
period = 1.0 / 60.0; |
165 |
> |
#endif |
166 |
> |
u = ( tbuf.tms_utime + tbuf.tms_cutime ) * period; |
167 |
> |
s = ( tbuf.tms_stime + tbuf.tms_cstime ) * period; |
168 |
> |
#endif |
169 |
|
|
170 |
< |
sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f CPU hours\n", |
171 |
< |
nrays, pctdone, t/3600.0); |
170 |
> |
sprintf(errmsg, |
171 |
> |
"%lu rays, %4.2f%% after %.3fu %.3fs %.3fr hours on %s\n", |
172 |
> |
nrays, pctdone, u/3600., s/3600., |
173 |
> |
(tlastrept-tstart)/3600., myhostname()); |
174 |
|
eputs(errmsg); |
175 |
< |
tlastrept = time((long *)0); |
175 |
> |
#ifndef BSD |
176 |
> |
signal(SIGCONT, report); |
177 |
> |
#endif |
178 |
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} |
179 |
|
#else |
180 |
|
report() /* report progress */ |
181 |
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{ |
182 |
< |
signal(SIGALRM, report); |
183 |
< |
tlastrept = time((long *)0); |
108 |
< |
sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f hours\n", |
182 |
> |
tlastrept = time((time_t *)NULL); |
183 |
> |
sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
184 |
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nrays, pctdone, (tlastrept-tstart)/3600.0); |
185 |
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eputs(errmsg); |
186 |
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} |
187 |
|
#endif |
188 |
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|
189 |
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|
190 |
+ |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
191 |
+ |
int seq; |
192 |
+ |
char *pout, *zout, *prvr; |
193 |
+ |
/* |
194 |
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* If seq is greater than zero, then we will render a sequence of |
195 |
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* images based on view parameter strings read from the standard input. |
196 |
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* If pout is NULL, then all images will be sent to the standard ouput. |
197 |
+ |
* If seq is greater than zero and prvr is an integer, then it is the |
198 |
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* frame number at which rendering should begin. Preceeding view parameter |
199 |
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* strings will be skipped in the input. |
200 |
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* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
201 |
+ |
* Note that pout and zout should contain %d format specifications for |
202 |
+ |
* sequenced file naming. |
203 |
+ |
*/ |
204 |
+ |
{ |
205 |
+ |
extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
206 |
+ |
char fbuf[128], fbuf2[128]; |
207 |
+ |
int npicts; |
208 |
+ |
register char *cp; |
209 |
+ |
RESOLU rs; |
210 |
+ |
double pa; |
211 |
+ |
/* check sampling */ |
212 |
+ |
if (psample < 1) |
213 |
+ |
psample = 1; |
214 |
+ |
else if (psample > MAXDIV) { |
215 |
+ |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
216 |
+ |
psample, MAXDIV); |
217 |
+ |
error(WARNING, errmsg); |
218 |
+ |
psample = MAXDIV; |
219 |
+ |
} |
220 |
+ |
/* get starting frame */ |
221 |
+ |
if (seq <= 0) |
222 |
+ |
seq = 0; |
223 |
+ |
else if (prvr != NULL && isint(prvr)) { |
224 |
+ |
register int rn; /* skip to specified view */ |
225 |
+ |
if ((rn = atoi(prvr)) < seq) |
226 |
+ |
error(USER, "recover frame less than start frame"); |
227 |
+ |
if (pout == NULL) |
228 |
+ |
error(USER, "missing output file specification"); |
229 |
+ |
for ( ; seq < rn; seq++) |
230 |
+ |
if (nextview(stdin) == EOF) |
231 |
+ |
error(USER, "unexpected EOF on view input"); |
232 |
+ |
prvr = fbuf; /* mark for renaming */ |
233 |
+ |
} |
234 |
+ |
if (pout != NULL & prvr != NULL) { |
235 |
+ |
sprintf(fbuf, pout, seq); |
236 |
+ |
if (!strcmp(prvr, fbuf)) { /* rename */ |
237 |
+ |
strcpy(fbuf2, fbuf); |
238 |
+ |
for (cp = fbuf2; *cp; cp++) |
239 |
+ |
; |
240 |
+ |
while (cp > fbuf2 && !ISDIRSEP(cp[-1])) |
241 |
+ |
cp--; |
242 |
+ |
strcpy(cp, RFTEMPLATE); |
243 |
+ |
prvr = mktemp(fbuf2); |
244 |
+ |
if (rename(fbuf, prvr) < 0) |
245 |
+ |
if (errno == ENOENT) { /* ghost file */ |
246 |
+ |
sprintf(errmsg, |
247 |
+ |
"new output file \"%s\"", |
248 |
+ |
fbuf); |
249 |
+ |
error(WARNING, errmsg); |
250 |
+ |
prvr = NULL; |
251 |
+ |
} else { /* serious error */ |
252 |
+ |
sprintf(errmsg, |
253 |
+ |
"cannot rename \"%s\" to \"%s\"", |
254 |
+ |
fbuf, prvr); |
255 |
+ |
error(SYSTEM, errmsg); |
256 |
+ |
} |
257 |
+ |
} |
258 |
+ |
} |
259 |
+ |
npicts = 0; /* render sequence */ |
260 |
+ |
do { |
261 |
+ |
if (seq && nextview(stdin) == EOF) |
262 |
+ |
break; |
263 |
+ |
pctdone = 0.0; |
264 |
+ |
if (pout != NULL) { |
265 |
+ |
sprintf(fbuf, pout, seq); |
266 |
+ |
if (file_exists(fbuf)) { |
267 |
+ |
if (prvr != NULL || !strcmp(fbuf, pout)) { |
268 |
+ |
sprintf(errmsg, |
269 |
+ |
"output file \"%s\" exists", |
270 |
+ |
fbuf); |
271 |
+ |
error(USER, errmsg); |
272 |
+ |
} |
273 |
+ |
continue; /* don't clobber */ |
274 |
+ |
} |
275 |
+ |
if (freopen(fbuf, "w", stdout) == NULL) { |
276 |
+ |
sprintf(errmsg, |
277 |
+ |
"cannot open output file \"%s\"", fbuf); |
278 |
+ |
error(SYSTEM, errmsg); |
279 |
+ |
} |
280 |
+ |
#ifdef MSDOS |
281 |
+ |
setmode(fileno(stdout), O_BINARY); |
282 |
+ |
#endif |
283 |
+ |
dupheader(); |
284 |
+ |
} |
285 |
+ |
hres = hresolu; vres = vresolu; pa = pixaspect; |
286 |
+ |
if (prvr != NULL) |
287 |
+ |
if (viewfile(prvr, &ourview, &rs) <= 0 |
288 |
+ |
|| rs.or != PIXSTANDARD) { |
289 |
+ |
sprintf(errmsg, |
290 |
+ |
"cannot recover view parameters from \"%s\"", prvr); |
291 |
+ |
error(WARNING, errmsg); |
292 |
+ |
} else { |
293 |
+ |
pa = 0.0; |
294 |
+ |
hres = scanlen(&rs); |
295 |
+ |
vres = numscans(&rs); |
296 |
+ |
} |
297 |
+ |
if ((cp = setview(&ourview)) != NULL) |
298 |
+ |
error(USER, cp); |
299 |
+ |
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
300 |
+ |
if (seq) { |
301 |
+ |
if (ralrm > 0) { |
302 |
+ |
fprintf(stderr, "FRAME %d:", seq); |
303 |
+ |
fprintview(&ourview, stderr); |
304 |
+ |
putc('\n', stderr); |
305 |
+ |
fflush(stderr); |
306 |
+ |
} |
307 |
+ |
printf("FRAME=%d\n", seq); |
308 |
+ |
} |
309 |
+ |
fputs(VIEWSTR, stdout); |
310 |
+ |
fprintview(&ourview, stdout); |
311 |
+ |
putchar('\n'); |
312 |
+ |
if (pa < .99 || pa > 1.01) |
313 |
+ |
fputaspect(pa, stdout); |
314 |
+ |
fputformat(COLRFMT, stdout); |
315 |
+ |
putchar('\n'); |
316 |
+ |
if (zout != NULL) |
317 |
+ |
sprintf(cp=fbuf, zout, seq); |
318 |
+ |
else |
319 |
+ |
cp = NULL; |
320 |
+ |
render(cp, prvr); |
321 |
+ |
prvr = NULL; |
322 |
+ |
npicts++; |
323 |
+ |
} while (seq++); |
324 |
+ |
/* check that we did something */ |
325 |
+ |
if (npicts == 0) |
326 |
+ |
error(WARNING, "no output produced"); |
327 |
+ |
} |
328 |
+ |
|
329 |
+ |
|
330 |
+ |
nextview(fp) /* get next view from fp */ |
331 |
+ |
FILE *fp; |
332 |
+ |
{ |
333 |
+ |
char linebuf[256]; |
334 |
+ |
|
335 |
+ |
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
336 |
+ |
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
337 |
+ |
return(0); |
338 |
+ |
return(EOF); |
339 |
+ |
} |
340 |
+ |
|
341 |
+ |
|
342 |
|
render(zfile, oldfile) /* render the scene */ |
343 |
|
char *zfile, *oldfile; |
344 |
|
{ |
345 |
|
extern long lseek(); |
346 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
347 |
|
float *zbar[MAXDIV+1]; /* z values */ |
348 |
+ |
char *sampdens; /* previous sample density */ |
349 |
|
int ypos; /* current scanline */ |
350 |
|
int ystep; /* current y step size */ |
351 |
+ |
int hstep; /* h step size */ |
352 |
|
int zfd; |
353 |
|
COLOR *colptr; |
354 |
|
float *zptr; |
355 |
|
register int i; |
127 |
– |
/* check sampling */ |
128 |
– |
if (psample < 1) |
129 |
– |
psample = 1; |
130 |
– |
else if (psample > MAXDIV) { |
131 |
– |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
132 |
– |
psample, MAXDIV); |
133 |
– |
error(WARNING, errmsg); |
134 |
– |
psample = MAXDIV; |
135 |
– |
} |
356 |
|
/* allocate scanlines */ |
357 |
|
for (i = 0; i <= psample; i++) { |
358 |
< |
scanbar[i] = (COLOR *)malloc(hresolu*sizeof(COLOR)); |
358 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
359 |
|
if (scanbar[i] == NULL) |
360 |
|
goto memerr; |
361 |
|
} |
362 |
< |
/* open z file */ |
362 |
> |
hstep = (psample*140+49)/99; /* quincunx sampling */ |
363 |
> |
ystep = (psample*99+70)/140; |
364 |
> |
if (hstep > 2) { |
365 |
> |
i = hres/hstep + 2; |
366 |
> |
if ((sampdens = malloc(i)) == NULL) |
367 |
> |
goto memerr; |
368 |
> |
while (i--) |
369 |
> |
sampdens[i] = hstep; |
370 |
> |
} else |
371 |
> |
sampdens = NULL; |
372 |
> |
/* open z-file */ |
373 |
|
if (zfile != NULL) { |
374 |
|
if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
375 |
< |
sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
375 |
> |
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
376 |
|
error(SYSTEM, errmsg); |
377 |
|
} |
378 |
+ |
#ifdef MSDOS |
379 |
+ |
setmode(zfd, O_BINARY); |
380 |
+ |
#endif |
381 |
|
for (i = 0; i <= psample; i++) { |
382 |
< |
zbar[i] = (float *)malloc(hresolu*sizeof(float)); |
382 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
383 |
|
if (zbar[i] == NULL) |
384 |
|
goto memerr; |
385 |
|
} |
389 |
|
zbar[i] = NULL; |
390 |
|
} |
391 |
|
/* write out boundaries */ |
392 |
< |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
392 |
> |
fprtresolu(hres, vres, stdout); |
393 |
|
/* recover file and compute first */ |
394 |
|
i = salvage(oldfile); |
395 |
+ |
if (i >= vres) |
396 |
+ |
goto alldone; |
397 |
|
if (zfd != -1 && i > 0 && |
398 |
< |
lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
399 |
< |
error(SYSTEM, "z file seek error in render"); |
400 |
< |
pctdone = 100.0*i/vresolu; |
398 |
> |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
399 |
> |
error(SYSTEM, "z-file seek error in render"); |
400 |
> |
pctdone = 100.0*i/vres; |
401 |
|
if (ralrm > 0) /* report init stats */ |
402 |
|
report(); |
403 |
< |
ypos = vresolu-1 - i; |
404 |
< |
fillscanline(scanbar[0], zbar[0], hresolu, ypos, psample); |
405 |
< |
ystep = psample; |
403 |
> |
#ifndef BSD |
404 |
> |
else |
405 |
> |
#endif |
406 |
> |
signal(SIGCONT, report); |
407 |
> |
ypos = vres-1 - i; |
408 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
409 |
|
/* compute scanlines */ |
410 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
411 |
|
/* bottom adjust? */ |
420 |
|
zbar[ystep] = zbar[0]; |
421 |
|
zbar[0] = zptr; |
422 |
|
/* fill base line */ |
423 |
< |
fillscanline(scanbar[0], zbar[0], hresolu, ypos, psample); |
423 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, |
424 |
> |
hres, ypos, hstep); |
425 |
|
/* fill bar */ |
426 |
< |
fillscanbar(scanbar, zbar, hresolu, ypos, ystep); |
426 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
427 |
|
/* write it out */ |
428 |
+ |
#ifndef BSD |
429 |
+ |
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
430 |
+ |
#endif |
431 |
|
for (i = ystep; i > 0; i--) { |
432 |
|
if (zfd != -1 && write(zfd, (char *)zbar[i], |
433 |
< |
hresolu*sizeof(float)) |
434 |
< |
< hresolu*sizeof(float)) |
433 |
> |
hres*sizeof(float)) |
434 |
> |
< hres*sizeof(float)) |
435 |
|
goto writerr; |
436 |
< |
if (fwritescan(scanbar[i], hresolu, stdout) < 0) |
436 |
> |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
437 |
|
goto writerr; |
438 |
|
} |
439 |
|
if (fflush(stdout) == EOF) |
440 |
|
goto writerr; |
441 |
|
/* record progress */ |
442 |
< |
pctdone = 100.0*(vresolu-1-ypos)/vresolu; |
443 |
< |
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
442 |
> |
pctdone = 100.0*(vres-1-ypos)/vres; |
443 |
> |
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
444 |
|
report(); |
445 |
+ |
#ifndef BSD |
446 |
+ |
else |
447 |
+ |
signal(SIGCONT, report); |
448 |
+ |
#endif |
449 |
|
} |
450 |
|
/* clean up */ |
451 |
+ |
signal(SIGCONT, SIG_IGN); |
452 |
+ |
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
453 |
+ |
< hres*sizeof(float)) |
454 |
+ |
goto writerr; |
455 |
+ |
fwritescan(scanbar[0], hres, stdout); |
456 |
+ |
if (fflush(stdout) == EOF) |
457 |
+ |
goto writerr; |
458 |
+ |
alldone: |
459 |
|
if (zfd != -1) { |
206 |
– |
if (write(zfd, (char *)zbar[0], hresolu*sizeof(float)) |
207 |
– |
< hresolu*sizeof(float)) |
208 |
– |
goto writerr; |
460 |
|
if (close(zfd) == -1) |
461 |
|
goto writerr; |
462 |
|
for (i = 0; i <= psample; i++) |
463 |
|
free((char *)zbar[i]); |
464 |
|
} |
214 |
– |
fwritescan(scanbar[0], hresolu, stdout); |
215 |
– |
if (fflush(stdout) == EOF) |
216 |
– |
goto writerr; |
465 |
|
for (i = 0; i <= psample; i++) |
466 |
|
free((char *)scanbar[i]); |
467 |
+ |
if (sampdens != NULL) |
468 |
+ |
free(sampdens); |
469 |
|
pctdone = 100.0; |
470 |
+ |
if (ralrm > 0) |
471 |
+ |
report(); |
472 |
+ |
signal(SIGCONT, SIG_DFL); |
473 |
|
return; |
474 |
|
writerr: |
475 |
|
error(SYSTEM, "write error in render"); |
478 |
|
} |
479 |
|
|
480 |
|
|
481 |
< |
fillscanline(scanline, zline, xres, y, xstep) /* fill scan line at y */ |
482 |
< |
register COLOR *scanline; |
483 |
< |
register float *zline; |
481 |
> |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
482 |
> |
register COLOR *scanline; |
483 |
> |
register float *zline; |
484 |
> |
register char *sd; |
485 |
|
int xres, y, xstep; |
486 |
|
{ |
487 |
< |
int b = xstep; |
488 |
< |
double z; |
487 |
> |
static int nc = 0; /* number of calls */ |
488 |
> |
int bl = xstep, b = xstep; |
489 |
> |
double z; |
490 |
|
register int i; |
491 |
|
|
492 |
|
z = pixvalue(scanline[0], 0, y); |
493 |
|
if (zline) zline[0] = z; |
494 |
< |
|
495 |
< |
for (i = xstep; i < xres-1+xstep; i += xstep) { |
494 |
> |
/* zig-zag start for quincunx pattern */ |
495 |
> |
for (i = ++nc & 1 ? xstep : xstep/2; i < xres-1+xstep; i += xstep) { |
496 |
|
if (i >= xres) { |
497 |
|
xstep += xres-1-i; |
498 |
|
i = xres-1; |
499 |
|
} |
500 |
|
z = pixvalue(scanline[i], i, y); |
501 |
|
if (zline) zline[i] = z; |
502 |
< |
|
503 |
< |
b = fillsample(scanline+i-xstep, zline ? zline+i-xstep : NULL, |
504 |
< |
i-xstep, y, xstep, 0, b/2); |
502 |
> |
if (sd) b = sd[0] > sd[1] ? sd[0] : sd[1]; |
503 |
> |
if (i <= xstep) |
504 |
> |
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
505 |
> |
else |
506 |
> |
b = fillsample(scanline+i-xstep, |
507 |
> |
zline ? zline+i-xstep : (float *)NULL, |
508 |
> |
i-xstep, y, xstep, 0, b/2); |
509 |
> |
if (sd) *sd++ = nc & 1 ? bl : b; |
510 |
> |
bl = b; |
511 |
|
} |
512 |
+ |
if (sd && nc & 1) *sd = bl; |
513 |
|
} |
514 |
|
|
515 |
|
|
516 |
|
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
517 |
< |
register COLOR *scanbar[]; |
518 |
< |
register float *zbar[]; |
517 |
> |
register COLOR *scanbar[]; |
518 |
> |
register float *zbar[]; |
519 |
|
int xres, y, ysize; |
520 |
|
{ |
521 |
|
COLOR vline[MAXDIV+1]; |
532 |
|
zline[ysize] = zbar[ysize][i]; |
533 |
|
} |
534 |
|
|
535 |
< |
b = fillsample(vline, zbar[0] ? zline : NULL, |
535 |
> |
b = fillsample(vline, zbar[0] ? zline : (float *)NULL, |
536 |
|
i, y, 0, ysize, b/2); |
537 |
|
|
538 |
|
for (j = 1; j < ysize; j++) |
545 |
|
|
546 |
|
|
547 |
|
int |
548 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
549 |
< |
register COLOR *colline; |
550 |
< |
register float *zline; |
548 |
> |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
549 |
> |
register COLOR *colline; |
550 |
> |
register float *zline; |
551 |
|
int x, y; |
552 |
|
int xlen, ylen; |
553 |
|
int b; |
554 |
|
{ |
555 |
< |
extern double fabs(); |
556 |
< |
double ratio; |
295 |
< |
double z; |
555 |
> |
double ratio; |
556 |
> |
double z; |
557 |
|
COLOR ctmp; |
558 |
|
int ncut; |
559 |
|
register int len; |
590 |
|
/* recurse */ |
591 |
|
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
592 |
|
|
593 |
< |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
593 |
> |
ncut += fillsample(colline+(len>>1), |
594 |
> |
zline ? zline+(len>>1) : (float *)NULL, |
595 |
|
x+(xlen>>1), y+(ylen>>1), |
596 |
|
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
597 |
|
|
606 |
|
{ |
607 |
|
static RAY thisray; |
608 |
|
|
609 |
< |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
610 |
< |
(x+pixjitter())/hresolu, (y+pixjitter())/vresolu) < 0) { |
609 |
> |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, &ourview, |
610 |
> |
(x+pixjitter())/hres, (y+pixjitter())/vres)) < -FTINY) { |
611 |
|
setcolor(col, 0.0, 0.0, 0.0); |
612 |
|
return(0.0); |
613 |
|
} |
614 |
|
|
615 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
616 |
|
|
617 |
< |
samplendx = 3*y + x; /* set pixel index */ |
617 |
> |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
618 |
|
|
619 |
|
rayvalue(&thisray); /* trace ray */ |
620 |
|
|
633 |
|
int x, y; |
634 |
|
|
635 |
|
if (oldfile == NULL) |
636 |
< |
return(0); |
637 |
< |
|
636 |
> |
goto gotzip; |
637 |
> |
|
638 |
|
if ((fp = fopen(oldfile, "r")) == NULL) { |
639 |
|
sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
640 |
|
error(WARNING, errmsg); |
641 |
< |
return(0); |
641 |
> |
goto gotzip; |
642 |
|
} |
643 |
+ |
#ifdef MSDOS |
644 |
+ |
setmode(fileno(fp), O_BINARY); |
645 |
+ |
#endif |
646 |
|
/* discard header */ |
647 |
< |
getheader(fp, NULL); |
647 |
> |
getheader(fp, NULL, NULL); |
648 |
|
/* get picture size */ |
649 |
< |
if (fgetresolu(&x, &y, fp) != (YMAJOR|YDECR)) { |
650 |
< |
sprintf(errmsg, "bad recover file \"%s\"", oldfile); |
649 |
> |
if (!fscnresolu(&x, &y, fp)) { |
650 |
> |
sprintf(errmsg, "bad recover file \"%s\" - not removed", |
651 |
> |
oldfile); |
652 |
|
error(WARNING, errmsg); |
653 |
|
fclose(fp); |
654 |
< |
return(0); |
654 |
> |
goto gotzip; |
655 |
|
} |
656 |
|
|
657 |
< |
if (x != hresolu || y != vresolu) { |
657 |
> |
if (x != hres || y != vres) { |
658 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
659 |
|
oldfile); |
660 |
|
error(USER, errmsg); |
661 |
|
} |
662 |
|
|
663 |
< |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
663 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
664 |
|
if (scanline == NULL) |
665 |
|
error(SYSTEM, "out of memory in salvage"); |
666 |
< |
for (y = 0; y < vresolu; y++) { |
667 |
< |
if (freadcolrs(scanline, hresolu, fp) < 0) |
666 |
> |
for (y = 0; y < vres; y++) { |
667 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
668 |
|
break; |
669 |
< |
if (fwritecolrs(scanline, hresolu, stdout) < 0) |
669 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
670 |
|
goto writerr; |
671 |
|
} |
672 |
|
if (fflush(stdout) == EOF) |
675 |
|
fclose(fp); |
676 |
|
unlink(oldfile); |
677 |
|
return(y); |
678 |
+ |
gotzip: |
679 |
+ |
if (fflush(stdout) == EOF) |
680 |
+ |
error(SYSTEM, "error writing picture header"); |
681 |
+ |
return(0); |
682 |
|
writerr: |
683 |
< |
error(SYSTEM, "write error in salvage"); |
683 |
> |
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
684 |
> |
error(SYSTEM, errmsg); |
685 |
> |
} |
686 |
> |
|
687 |
> |
|
688 |
> |
int |
689 |
> |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
690 |
> |
register int x, y; |
691 |
> |
int xres, yres; |
692 |
> |
{ |
693 |
> |
x -= y; |
694 |
> |
while (x < 0) |
695 |
> |
x += xres; |
696 |
> |
return((((x>>2)*yres + y) << 2) + (x & 3)); |
697 |
|
} |