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< |
/* Copyright (c) 1986 Regents of the University of California */ |
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> |
/* Copyright (c) 1993 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 <sys/utsname.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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|
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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 */ |
57 |
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double dstrpix = 0.67; /* square pixel distribution */ |
56 |
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double maxdiff = .05; /* max. difference for interpolation */ |
57 |
> |
double dstrpix = 0.67; /* square pixel distribution */ |
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|
59 |
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .05; /* shadow threshold */ |
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double shadcert = .5; /* shadow certainty */ |
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double dstrsrc = 0.0; /* square source distribution */ |
60 |
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double shadthresh = .05; /* shadow threshold */ |
61 |
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double shadcert = .5; /* shadow certainty */ |
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int directrelay = 1; /* number of source relays */ |
63 |
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int vspretest = 512; /* virtual source pretest density */ |
64 |
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int directvis = 1; /* sources visible? */ |
65 |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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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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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 */ |
74 |
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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 */ |
86 |
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#endif |
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|
88 |
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double pctdone = 0.0; /* percentage done */ |
88 |
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double pctdone = 0.0; /* percentage done */ |
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|
90 |
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extern long nrays; /* number of rays traced */ |
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time_t tlastrept = 0L; /* time at last report */ |
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|
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#define MAXDIV 32 /* maximum sample size */ |
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extern time_t tstart; /* starting time */ |
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|
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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extern unsigned long nrays; /* number of rays traced */ |
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|
96 |
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double pixvalue(); |
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#define MAXDIV 16 /* maximum sample size */ |
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|
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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|
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static int hres, vres; /* resolution for this frame */ |
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|
102 |
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extern char *mktemp(); |
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|
104 |
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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) |
108 |
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#else |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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int |
112 |
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file_exists(fname) /* ordinary file exists? */ |
113 |
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char *fname; |
114 |
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{ |
115 |
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struct stat sbuf; |
116 |
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if (stat(fname, &sbuf) < 0) return(0); |
117 |
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return((sbuf.st_mode & S_IFREG) != 0); |
118 |
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} |
119 |
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#endif |
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|
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|
122 |
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quit(code) /* quit program */ |
123 |
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int code; |
124 |
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{ |
125 |
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if (code || ralrm > 0) /* report status */ |
125 |
> |
if (code) /* report status */ |
126 |
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report(); |
127 |
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|
127 |
> |
headclean(); /* delete header file */ |
128 |
> |
pfclean(); /* clean up persist files */ |
129 |
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exit(code); |
130 |
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} |
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|
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|
133 |
+ |
#ifndef NIX |
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report() /* report progress */ |
135 |
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{ |
136 |
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double u, s; |
137 |
|
#ifdef BSD |
138 |
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char hostname[257]; |
139 |
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struct rusage rubuf; |
140 |
< |
double t; |
140 |
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#else |
141 |
> |
struct tms tbuf; |
142 |
> |
struct utsname nambuf; |
143 |
> |
double period; |
144 |
> |
#define hostname nambuf.nodename |
145 |
> |
#endif |
146 |
|
|
147 |
+ |
tlastrept = time((time_t *)NULL); |
148 |
+ |
#ifdef BSD |
149 |
|
getrusage(RUSAGE_SELF, &rubuf); |
150 |
< |
t = (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
151 |
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t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
150 |
> |
u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
151 |
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s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
152 |
|
getrusage(RUSAGE_CHILDREN, &rubuf); |
153 |
< |
t += (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
154 |
< |
t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
155 |
< |
|
88 |
< |
sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f CPU hours\n", |
89 |
< |
nrays, pctdone, t/3600.0); |
153 |
> |
u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
154 |
> |
s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
155 |
> |
gethostname(hostname, sizeof(hostname)); |
156 |
|
#else |
157 |
< |
signal(SIGALRM, report); |
158 |
< |
sprintf(errmsg, "%ld rays, %4.2f%% done\n", nrays, pctdone); |
157 |
> |
times(&tbuf); |
158 |
> |
#ifdef _SC_CLK_TCK |
159 |
> |
period = 1.0 / sysconf(_SC_CLK_TCK); |
160 |
> |
#else |
161 |
> |
period = 1.0 / 60.0; |
162 |
|
#endif |
163 |
+ |
u = ( tbuf.tms_utime + tbuf.tms_cutime ) * period; |
164 |
+ |
s = ( tbuf.tms_stime + tbuf.tms_cstime ) * period; |
165 |
+ |
uname(&nambuf); |
166 |
+ |
#endif |
167 |
+ |
|
168 |
+ |
sprintf(errmsg, |
169 |
+ |
"%lu rays, %4.2f%% after %.3fu %.3fs %.3fr hours on %s\n", |
170 |
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nrays, pctdone, u/3600., s/3600., |
171 |
+ |
(tlastrept-tstart)/3600., hostname); |
172 |
|
eputs(errmsg); |
173 |
+ |
#ifndef BSD |
174 |
+ |
signal(SIGCONT, report); |
175 |
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#undef hostname |
176 |
+ |
#endif |
177 |
+ |
} |
178 |
+ |
#else |
179 |
+ |
report() /* report progress */ |
180 |
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{ |
181 |
+ |
tlastrept = time((time_t *)NULL); |
182 |
+ |
sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
183 |
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nrays, pctdone, (tlastrept-tstart)/3600.0); |
184 |
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eputs(errmsg); |
185 |
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} |
186 |
+ |
#endif |
187 |
|
|
188 |
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if (ralrm > 0) |
189 |
< |
alarm(ralrm); |
188 |
> |
|
189 |
> |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
190 |
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int seq; |
191 |
> |
char *pout, *zout, *prvr; |
192 |
> |
/* |
193 |
> |
* If seq is greater than zero, then we will render a sequence of |
194 |
> |
* images based on view parameter strings read from the standard input. |
195 |
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* If pout is NULL, then all images will be sent to the standard ouput. |
196 |
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* If seq is greater than zero and prvr is an integer, then it is the |
197 |
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* frame number at which rendering should begin. Preceeding view parameter |
198 |
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* strings will be skipped in the input. |
199 |
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* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
200 |
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* Note that pout and zout should contain %d format specifications for |
201 |
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* sequenced file naming. |
202 |
> |
*/ |
203 |
> |
{ |
204 |
> |
extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
205 |
> |
char fbuf[128], fbuf2[128]; |
206 |
> |
int npicts; |
207 |
> |
register char *cp; |
208 |
> |
RESOLU rs; |
209 |
> |
double pa; |
210 |
> |
/* check sampling */ |
211 |
> |
if (psample < 1) |
212 |
> |
psample = 1; |
213 |
> |
else if (psample > MAXDIV) { |
214 |
> |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
215 |
> |
psample, MAXDIV); |
216 |
> |
error(WARNING, errmsg); |
217 |
> |
psample = MAXDIV; |
218 |
> |
} |
219 |
> |
/* get starting frame */ |
220 |
> |
if (seq <= 0) |
221 |
> |
seq = 0; |
222 |
> |
else if (prvr != NULL && isint(prvr)) { |
223 |
> |
register int rn; /* skip to specified view */ |
224 |
> |
if ((rn = atoi(prvr)) < seq) |
225 |
> |
error(USER, "recover frame less than start frame"); |
226 |
> |
if (pout == NULL) |
227 |
> |
error(USER, "missing output file specification"); |
228 |
> |
for ( ; seq < rn; seq++) |
229 |
> |
if (nextview(stdin) == EOF) |
230 |
> |
error(USER, "unexpected EOF on view input"); |
231 |
> |
prvr = fbuf; /* mark for renaming */ |
232 |
> |
} |
233 |
> |
if (pout != NULL & prvr != NULL) { |
234 |
> |
sprintf(fbuf, pout, seq); |
235 |
> |
if (!strcmp(prvr, fbuf)) { /* rename */ |
236 |
> |
strcpy(fbuf2, fbuf); |
237 |
> |
for (cp = fbuf2; *cp; cp++) |
238 |
> |
; |
239 |
> |
while (cp > fbuf2 && !ISDIRSEP(cp[-1])) |
240 |
> |
cp--; |
241 |
> |
strcpy(cp, RFTEMPLATE); |
242 |
> |
prvr = mktemp(fbuf2); |
243 |
> |
if (rename(fbuf, prvr) < 0) |
244 |
> |
if (errno == ENOENT) { /* ghost file */ |
245 |
> |
sprintf(errmsg, |
246 |
> |
"new output file \"%s\"", |
247 |
> |
fbuf); |
248 |
> |
error(WARNING, errmsg); |
249 |
> |
prvr = NULL; |
250 |
> |
} else { /* serious error */ |
251 |
> |
sprintf(errmsg, |
252 |
> |
"cannot rename \"%s\" to \"%s\"", |
253 |
> |
fbuf, prvr); |
254 |
> |
error(SYSTEM, errmsg); |
255 |
> |
} |
256 |
> |
} |
257 |
> |
} |
258 |
> |
npicts = 0; /* render sequence */ |
259 |
> |
do { |
260 |
> |
if (seq && nextview(stdin) == EOF) |
261 |
> |
break; |
262 |
> |
pctdone = 0.0; |
263 |
> |
if (pout != NULL) { |
264 |
> |
sprintf(fbuf, pout, seq); |
265 |
> |
if (file_exists(fbuf)) { |
266 |
> |
if (prvr != NULL || !strcmp(fbuf, pout)) { |
267 |
> |
sprintf(errmsg, |
268 |
> |
"output file \"%s\" exists", |
269 |
> |
fbuf); |
270 |
> |
error(USER, errmsg); |
271 |
> |
} |
272 |
> |
continue; /* don't clobber */ |
273 |
> |
} |
274 |
> |
if (freopen(fbuf, "w", stdout) == NULL) { |
275 |
> |
sprintf(errmsg, |
276 |
> |
"cannot open output file \"%s\"", fbuf); |
277 |
> |
error(SYSTEM, errmsg); |
278 |
> |
} |
279 |
> |
#ifdef MSDOS |
280 |
> |
setmode(fileno(stdout), O_BINARY); |
281 |
> |
#endif |
282 |
> |
dupheader(); |
283 |
> |
} |
284 |
> |
hres = hresolu; vres = vresolu; pa = pixaspect; |
285 |
> |
if (prvr != NULL) |
286 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0 |
287 |
> |
|| rs.or != PIXSTANDARD) { |
288 |
> |
sprintf(errmsg, |
289 |
> |
"cannot recover view parameters from \"%s\"", prvr); |
290 |
> |
error(WARNING, errmsg); |
291 |
> |
} else { |
292 |
> |
pa = 0.0; |
293 |
> |
hres = scanlen(&rs); |
294 |
> |
vres = numscans(&rs); |
295 |
> |
} |
296 |
> |
if ((cp = setview(&ourview)) != NULL) |
297 |
> |
error(USER, cp); |
298 |
> |
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
299 |
> |
if (seq) { |
300 |
> |
if (ralrm > 0) { |
301 |
> |
fprintf(stderr, "FRAME %d:", seq); |
302 |
> |
fprintview(&ourview, stderr); |
303 |
> |
putc('\n', stderr); |
304 |
> |
fflush(stderr); |
305 |
> |
} |
306 |
> |
printf("FRAME=%d\n", seq); |
307 |
> |
} |
308 |
> |
fputs(VIEWSTR, stdout); |
309 |
> |
fprintview(&ourview, stdout); |
310 |
> |
putchar('\n'); |
311 |
> |
if (pa < .99 || pa > 1.01) |
312 |
> |
fputaspect(pa, stdout); |
313 |
> |
fputformat(COLRFMT, stdout); |
314 |
> |
putchar('\n'); |
315 |
> |
if (zout != NULL) |
316 |
> |
sprintf(cp=fbuf, zout, seq); |
317 |
> |
else |
318 |
> |
cp = NULL; |
319 |
> |
render(cp, prvr); |
320 |
> |
prvr = NULL; |
321 |
> |
npicts++; |
322 |
> |
} while (seq++); |
323 |
> |
/* check that we did something */ |
324 |
> |
if (npicts == 0) |
325 |
> |
error(WARNING, "no output produced"); |
326 |
|
} |
327 |
|
|
328 |
|
|
329 |
+ |
nextview(fp) /* get next view from fp */ |
330 |
+ |
FILE *fp; |
331 |
+ |
{ |
332 |
+ |
char linebuf[256]; |
333 |
+ |
|
334 |
+ |
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
335 |
+ |
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
336 |
+ |
return(0); |
337 |
+ |
return(EOF); |
338 |
+ |
} |
339 |
+ |
|
340 |
+ |
|
341 |
|
render(zfile, oldfile) /* render the scene */ |
342 |
|
char *zfile, *oldfile; |
343 |
|
{ |
344 |
|
extern long lseek(); |
345 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
346 |
|
float *zbar[MAXDIV+1]; /* z values */ |
347 |
+ |
char *sampdens; /* previous sample density */ |
348 |
|
int ypos; /* current scanline */ |
349 |
|
int ystep; /* current y step size */ |
350 |
+ |
int hstep; /* h step size */ |
351 |
|
int zfd; |
352 |
|
COLOR *colptr; |
353 |
|
float *zptr; |
354 |
|
register int i; |
113 |
– |
/* check sampling */ |
114 |
– |
if (psample < 1) |
115 |
– |
psample = 1; |
116 |
– |
else if (psample > MAXDIV) |
117 |
– |
psample = MAXDIV; |
355 |
|
/* allocate scanlines */ |
356 |
|
for (i = 0; i <= psample; i++) { |
357 |
< |
scanbar[i] = (COLOR *)malloc(hresolu*sizeof(COLOR)); |
357 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
358 |
|
if (scanbar[i] == NULL) |
359 |
|
goto memerr; |
360 |
|
} |
361 |
< |
/* open z file */ |
361 |
> |
hstep = (psample*140+49)/99; /* quincunx sampling */ |
362 |
> |
ystep = (psample*99+70)/140; |
363 |
> |
if (hstep > 2) { |
364 |
> |
i = hres/hstep + 2; |
365 |
> |
if ((sampdens = malloc(i)) == NULL) |
366 |
> |
goto memerr; |
367 |
> |
while (i--) |
368 |
> |
sampdens[i] = hstep; |
369 |
> |
} else |
370 |
> |
sampdens = NULL; |
371 |
> |
/* open z-file */ |
372 |
|
if (zfile != NULL) { |
373 |
|
if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
374 |
< |
sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
374 |
> |
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
375 |
|
error(SYSTEM, errmsg); |
376 |
|
} |
377 |
+ |
#ifdef MSDOS |
378 |
+ |
setmode(zfd, O_BINARY); |
379 |
+ |
#endif |
380 |
|
for (i = 0; i <= psample; i++) { |
381 |
< |
zbar[i] = (float *)malloc(hresolu*sizeof(float)); |
381 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
382 |
|
if (zbar[i] == NULL) |
383 |
|
goto memerr; |
384 |
|
} |
388 |
|
zbar[i] = NULL; |
389 |
|
} |
390 |
|
/* write out boundaries */ |
391 |
< |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
391 |
> |
fprtresolu(hres, vres, stdout); |
392 |
|
/* recover file and compute first */ |
393 |
|
i = salvage(oldfile); |
394 |
< |
if (zfd != -1 && lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
395 |
< |
error(SYSTEM, "z file seek error in render"); |
396 |
< |
ypos = vresolu-1 - i; |
397 |
< |
fillscanline(scanbar[0], zbar[0], hresolu, ypos, psample); |
398 |
< |
ystep = psample; |
394 |
> |
if (zfd != -1 && i > 0 && |
395 |
> |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
396 |
> |
error(SYSTEM, "z-file seek error in render"); |
397 |
> |
pctdone = 100.0*i/vres; |
398 |
> |
if (ralrm > 0) /* report init stats */ |
399 |
> |
report(); |
400 |
> |
#ifndef BSD |
401 |
> |
else |
402 |
> |
#endif |
403 |
> |
signal(SIGCONT, report); |
404 |
> |
ypos = vres-1 - i; |
405 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
406 |
|
/* compute scanlines */ |
407 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
151 |
– |
/* record progress */ |
152 |
– |
pctdone = 100.0*(vresolu-ypos-ystep)/vresolu; |
408 |
|
/* bottom adjust? */ |
409 |
|
if (ypos < 0) { |
410 |
|
ystep += ypos; |
417 |
|
zbar[ystep] = zbar[0]; |
418 |
|
zbar[0] = zptr; |
419 |
|
/* fill base line */ |
420 |
< |
fillscanline(scanbar[0], zbar[0], hresolu, ypos, psample); |
420 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, |
421 |
> |
hres, ypos, hstep); |
422 |
|
/* fill bar */ |
423 |
< |
fillscanbar(scanbar, zbar, hresolu, ypos, ystep); |
423 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
424 |
|
/* write it out */ |
425 |
+ |
#ifndef BSD |
426 |
+ |
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
427 |
+ |
#endif |
428 |
|
for (i = ystep; i > 0; i--) { |
429 |
|
if (zfd != -1 && write(zfd, (char *)zbar[i], |
430 |
< |
hresolu*sizeof(float)) |
431 |
< |
< hresolu*sizeof(float)) |
430 |
> |
hres*sizeof(float)) |
431 |
> |
< hres*sizeof(float)) |
432 |
|
goto writerr; |
433 |
< |
if (fwritescan(scanbar[i], hresolu, stdout) < 0) |
433 |
> |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
434 |
|
goto writerr; |
435 |
|
} |
436 |
|
if (fflush(stdout) == EOF) |
437 |
|
goto writerr; |
438 |
+ |
/* record progress */ |
439 |
+ |
pctdone = 100.0*(vres-1-ypos)/vres; |
440 |
+ |
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
441 |
+ |
report(); |
442 |
+ |
#ifndef BSD |
443 |
+ |
else |
444 |
+ |
signal(SIGCONT, report); |
445 |
+ |
#endif |
446 |
|
} |
447 |
|
/* clean up */ |
448 |
+ |
signal(SIGCONT, SIG_IGN); |
449 |
|
if (zfd != -1) { |
450 |
< |
if (write(zfd, (char *)zbar[0], hresolu*sizeof(float)) |
451 |
< |
< hresolu*sizeof(float)) |
450 |
> |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
451 |
> |
< hres*sizeof(float)) |
452 |
|
goto writerr; |
453 |
< |
close(zfd); |
453 |
> |
if (close(zfd) == -1) |
454 |
> |
goto writerr; |
455 |
|
for (i = 0; i <= psample; i++) |
456 |
|
free((char *)zbar[i]); |
457 |
|
} |
458 |
< |
fwritescan(scanbar[0], hresolu, stdout); |
458 |
> |
fwritescan(scanbar[0], hres, stdout); |
459 |
|
if (fflush(stdout) == EOF) |
460 |
|
goto writerr; |
461 |
|
for (i = 0; i <= psample; i++) |
462 |
|
free((char *)scanbar[i]); |
463 |
+ |
if (sampdens != NULL) |
464 |
+ |
free(sampdens); |
465 |
|
pctdone = 100.0; |
466 |
+ |
if (ralrm > 0) |
467 |
+ |
report(); |
468 |
+ |
signal(SIGCONT, SIG_DFL); |
469 |
|
return; |
470 |
|
writerr: |
471 |
|
error(SYSTEM, "write error in render"); |
474 |
|
} |
475 |
|
|
476 |
|
|
477 |
< |
fillscanline(scanline, zline, xres, y, xstep) /* fill scan line at y */ |
478 |
< |
register COLOR *scanline; |
479 |
< |
register float *zline; |
477 |
> |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
478 |
> |
register COLOR *scanline; |
479 |
> |
register float *zline; |
480 |
> |
register char *sd; |
481 |
|
int xres, y, xstep; |
482 |
|
{ |
483 |
< |
int b = xstep; |
484 |
< |
double z; |
483 |
> |
static int nc = 0; /* number of calls */ |
484 |
> |
int bl = xstep, b = xstep; |
485 |
> |
double z; |
486 |
|
register int i; |
487 |
|
|
488 |
|
z = pixvalue(scanline[0], 0, y); |
489 |
|
if (zline) zline[0] = z; |
490 |
< |
|
491 |
< |
for (i = xstep; i < xres-1+xstep; i += xstep) { |
490 |
> |
/* zig-zag start for quincunx pattern */ |
491 |
> |
for (i = ++nc & 1 ? xstep : xstep/2; i < xres-1+xstep; i += xstep) { |
492 |
|
if (i >= xres) { |
493 |
|
xstep += xres-1-i; |
494 |
|
i = xres-1; |
495 |
|
} |
496 |
|
z = pixvalue(scanline[i], i, y); |
497 |
|
if (zline) zline[i] = z; |
498 |
< |
|
499 |
< |
b = fillsample(scanline+i-xstep, zline ? zline+i-xstep : NULL, |
500 |
< |
i-xstep, y, xstep, 0, b/2); |
498 |
> |
if (sd) b = sd[0] > sd[1] ? sd[0] : sd[1]; |
499 |
> |
if (i <= xstep) |
500 |
> |
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
501 |
> |
else |
502 |
> |
b = fillsample(scanline+i-xstep, |
503 |
> |
zline ? zline+i-xstep : NULL, |
504 |
> |
i-xstep, y, xstep, 0, b/2); |
505 |
> |
if (sd) *sd++ = nc & 1 ? bl : b; |
506 |
> |
bl = b; |
507 |
|
} |
508 |
+ |
if (sd && nc & 1) *sd = bl; |
509 |
|
} |
510 |
|
|
511 |
|
|
512 |
|
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
513 |
< |
register COLOR *scanbar[]; |
514 |
< |
register float *zbar[]; |
513 |
> |
register COLOR *scanbar[]; |
514 |
> |
register float *zbar[]; |
515 |
|
int xres, y, ysize; |
516 |
|
{ |
517 |
|
COLOR vline[MAXDIV+1]; |
518 |
|
float zline[MAXDIV+1]; |
519 |
|
int b = ysize; |
237 |
– |
double z; |
520 |
|
register int i, j; |
521 |
|
|
522 |
|
for (i = 0; i < xres; i++) { |
541 |
|
|
542 |
|
|
543 |
|
int |
544 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
545 |
< |
register COLOR *colline; |
546 |
< |
register float *zline; |
544 |
> |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
545 |
> |
register COLOR *colline; |
546 |
> |
register float *zline; |
547 |
|
int x, y; |
548 |
|
int xlen, ylen; |
549 |
|
int b; |
550 |
|
{ |
551 |
< |
extern double fabs(); |
552 |
< |
double ratio; |
271 |
< |
double z; |
551 |
> |
double ratio; |
552 |
> |
double z; |
553 |
|
COLOR ctmp; |
554 |
|
int ncut; |
555 |
|
register int len; |
599 |
|
COLOR col; /* returned color */ |
600 |
|
int x, y; /* pixel position */ |
601 |
|
{ |
602 |
< |
static RAY thisray; /* our ray for this pixel */ |
602 |
> |
static RAY thisray; |
603 |
|
|
604 |
< |
viewray(thisray.rorg, thisray.rdir, &ourview, |
605 |
< |
(x+pixjitter())/hresolu, (y+pixjitter())/vresolu); |
604 |
> |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
605 |
> |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
606 |
> |
setcolor(col, 0.0, 0.0, 0.0); |
607 |
> |
return(0.0); |
608 |
> |
} |
609 |
|
|
610 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
611 |
< |
|
611 |
> |
|
612 |
> |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
613 |
> |
|
614 |
|
rayvalue(&thisray); /* trace ray */ |
615 |
|
|
616 |
|
copycolor(col, thisray.rcol); /* return color */ |
617 |
|
|
618 |
< |
return(thisray.rot); /* return distance */ |
618 |
> |
return(thisray.rt); /* return distance */ |
619 |
|
} |
620 |
|
|
621 |
|
|
635 |
|
error(WARNING, errmsg); |
636 |
|
return(0); |
637 |
|
} |
638 |
+ |
#ifdef MSDOS |
639 |
+ |
setmode(fileno(fp), O_BINARY); |
640 |
+ |
#endif |
641 |
|
/* discard header */ |
642 |
< |
getheader(fp, NULL); |
642 |
> |
getheader(fp, NULL, NULL); |
643 |
|
/* get picture size */ |
644 |
< |
if (fgetresolu(&x, &y, fp) != (YMAJOR|YDECR)) { |
645 |
< |
sprintf(errmsg, "bad recover file \"%s\"", oldfile); |
644 |
> |
if (!fscnresolu(&x, &y, fp)) { |
645 |
> |
sprintf(errmsg, "bad recover file \"%s\" - not removed", |
646 |
> |
oldfile); |
647 |
|
error(WARNING, errmsg); |
648 |
|
fclose(fp); |
649 |
|
return(0); |
650 |
|
} |
651 |
|
|
652 |
< |
if (x != hresolu || y != vresolu) { |
652 |
> |
if (x != hres || y != vres) { |
653 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
654 |
|
oldfile); |
655 |
|
error(USER, errmsg); |
656 |
|
} |
657 |
|
|
658 |
< |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
658 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
659 |
|
if (scanline == NULL) |
660 |
|
error(SYSTEM, "out of memory in salvage"); |
661 |
< |
for (y = 0; y < vresolu; y++) { |
662 |
< |
if (freadcolrs(scanline, hresolu, fp) < 0) |
661 |
> |
for (y = 0; y < vres; y++) { |
662 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
663 |
|
break; |
664 |
< |
if (fwritecolrs(scanline, hresolu, stdout) < 0) |
664 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
665 |
|
goto writerr; |
666 |
|
} |
667 |
|
if (fflush(stdout) == EOF) |
671 |
|
unlink(oldfile); |
672 |
|
return(y); |
673 |
|
writerr: |
674 |
< |
error(SYSTEM, "write error in salvage"); |
674 |
> |
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
675 |
> |
error(SYSTEM, errmsg); |
676 |
> |
} |
677 |
> |
|
678 |
> |
|
679 |
> |
int |
680 |
> |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
681 |
> |
register int x, y; |
682 |
> |
int xres, yres; |
683 |
> |
{ |
684 |
> |
x -= y; |
685 |
> |
while (x < 0) |
686 |
> |
x += xres; |
687 |
> |
return((((x>>2)*yres + y) << 2) + (x & 3)); |
688 |
|
} |