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/* Copyright (c) 1986 Regents of the University of California */ |
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/* Copyright (c) 1992 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 <sys/resource.h> |
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#endif |
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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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VIEW ourview = STDVIEW(512); /* view parameters */ |
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#include "paths.h" |
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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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|
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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 = .01; /* shadow threshold */ |
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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 directinvis = 0; /* sources invisible? */ |
49 |
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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 */ |
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int ambres = 128; /* ambient resolution */ |
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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 ambounce = 0; /* ambient bounces */ |
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char *amblist[128]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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|
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#ifdef MSDOS |
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int ralrm = 60; /* seconds between reports */ |
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#else |
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int ralrm = 0; /* seconds between reports */ |
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#endif |
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|
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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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|
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extern long time(); |
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extern long tstart; /* starting time */ |
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|
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extern long nrays; /* number of rays traced */ |
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|
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#define MAXDIV 32 /* maximum sample size */ |
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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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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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|
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#define RFTEMPLATE "rfXXXXXX" |
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#define HFTEMPLATE TEMPLATE |
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|
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static char *hfname = NULL; /* header file name */ |
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static FILE *hfp = NULL; /* header file pointer */ |
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|
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static int hres, vres; /* resolution for this frame */ |
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|
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extern char *mktemp(); |
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|
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double pixvalue(); |
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|
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|
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quit(code) /* quit program */ |
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int code; |
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{ |
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if (code || ralrm > 0) /* report status */ |
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if (code) /* report status */ |
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report(); |
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|
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if (hfname != NULL) { /* delete header file */ |
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if (hfp != NULL) |
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fclose(hfp); |
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unlink(hfname); |
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} |
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exit(code); |
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} |
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|
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|
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#ifdef BSD |
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report() /* report progress */ |
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{ |
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#ifdef BSD |
115 |
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struct rusage rubuf; |
116 |
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double t; |
116 |
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double t; |
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|
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getrusage(RUSAGE_SELF, &rubuf); |
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t = (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
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|
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sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f CPU hours\n", |
126 |
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nrays, pctdone, t/3600.0); |
127 |
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eputs(errmsg); |
128 |
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tlastrept = time((long *)0); |
129 |
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} |
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#else |
131 |
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sprintf(errmsg, "%ld rays, %4.2f%% done\n", nrays, pctdone); |
132 |
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#endif |
131 |
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report() /* report progress */ |
132 |
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{ |
133 |
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tlastrept = time((long *)0); |
134 |
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sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f hours\n", |
135 |
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nrays, pctdone, (tlastrept-tstart)/3600.0); |
136 |
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eputs(errmsg); |
137 |
+ |
signal(SIGALRM, report); |
138 |
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} |
139 |
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#endif |
140 |
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|
141 |
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if (ralrm > 0) |
142 |
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alarm(ralrm); |
141 |
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|
142 |
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openheader() /* save standard output to header file */ |
143 |
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{ |
144 |
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hfname = mktemp(HFTEMPLATE); |
145 |
> |
if (freopen(hfname, "w", stdout) == NULL) { |
146 |
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sprintf(errmsg, "cannot open header file \"%s\"", hfname); |
147 |
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error(SYSTEM, errmsg); |
148 |
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} |
149 |
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} |
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|
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|
152 |
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render(oldfile) /* render the scene */ |
92 |
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char *oldfile; |
152 |
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closeheader() /* done with header output */ |
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{ |
154 |
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COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
155 |
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int ypos; /* current scanline */ |
156 |
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COLOR *colptr; |
157 |
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register int i; |
154 |
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if (hfname == NULL) |
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return; |
156 |
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if (fflush(stdout) == EOF || (hfp = fopen(hfname, "r")) == NULL) |
157 |
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error(SYSTEM, "error reopening header file"); |
158 |
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#ifdef MSDOS |
159 |
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setmode(fileno(hfp), O_BINARY); |
160 |
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#endif |
161 |
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} |
162 |
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|
163 |
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|
164 |
+ |
dupheader() /* repeat header on standard output */ |
165 |
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{ |
166 |
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register int c; |
167 |
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|
168 |
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if (fseek(hfp, 0L, 0) < 0) |
169 |
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error(SYSTEM, "seek error on header file"); |
170 |
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while ((c = getc(hfp)) != EOF) |
171 |
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putchar(c); |
172 |
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} |
173 |
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|
174 |
+ |
|
175 |
+ |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
176 |
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int seq; |
177 |
+ |
char *pout, *zout, *prvr; |
178 |
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/* |
179 |
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* If seq is greater than zero, then we will render a sequence of |
180 |
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* images based on view parameter strings read from the standard input. |
181 |
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* If pout is NULL, then all images will be sent to the standard ouput. |
182 |
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* If seq is greater than zero and prvr is an integer, then it is the |
183 |
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* frame number at which rendering should begin. Preceeding view parameter |
184 |
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* strings will be skipped in the input. |
185 |
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* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
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* Note that pout and zout should contain %d format specifications for |
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* sequenced file naming. |
188 |
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*/ |
189 |
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{ |
190 |
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extern char *rindex(), *strncpy(), *strcat(); |
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char fbuf[128], fbuf2[128]; |
192 |
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register char *cp; |
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RESOLU rs; |
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double pa; |
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/* finished writing header */ |
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closeheader(); |
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/* check sampling */ |
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if (psample < 1) |
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psample = 1; |
200 |
< |
else if (psample > MAXDIV) |
200 |
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else if (psample > MAXDIV) { |
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sprintf(errmsg, "pixel sampling reduced from %d to %d", |
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psample, MAXDIV); |
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> |
error(WARNING, errmsg); |
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psample = MAXDIV; |
205 |
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} |
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/* get starting frame */ |
207 |
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if (seq <= 0) |
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seq = 0; |
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else if (prvr != NULL && isint(prvr)) { |
210 |
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register int rn; /* skip to specified view */ |
211 |
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if ((rn = atoi(prvr)) < seq) |
212 |
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error(USER, "recover frame less than start frame"); |
213 |
+ |
if (pout == NULL) |
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error(USER, "missing output file specification"); |
215 |
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for ( ; seq < rn; seq++) |
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if (nextview(stdin) == EOF) |
217 |
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error(USER, "unexpected EOF on view input"); |
218 |
+ |
prvr = fbuf; /* mark for renaming */ |
219 |
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} |
220 |
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if (pout != NULL) { |
221 |
+ |
sprintf(fbuf, pout, seq); |
222 |
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if (prvr != NULL && !strcmp(prvr, fbuf)) { /* rename */ |
223 |
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fbuf2[0] = '\0'; |
224 |
+ |
if ((cp = rindex(fbuf, '/')) != NULL) |
225 |
+ |
strncpy(fbuf2, fbuf, cp-fbuf+1); |
226 |
+ |
strcat(fbuf2, RFTEMPLATE); |
227 |
+ |
prvr = mktemp(fbuf2); |
228 |
+ |
if (rename(fbuf, prvr) < 0 && errno != ENOENT) { |
229 |
+ |
sprintf(errmsg, |
230 |
+ |
"cannot rename \"%s\" to \"%s\"", |
231 |
+ |
fbuf, prvr); |
232 |
+ |
error(SYSTEM, errmsg); |
233 |
+ |
} |
234 |
+ |
} |
235 |
+ |
} |
236 |
+ |
/* render sequence */ |
237 |
+ |
do { |
238 |
+ |
if (seq && nextview(stdin) == EOF) |
239 |
+ |
break; |
240 |
+ |
if (pout != NULL) { |
241 |
+ |
sprintf(fbuf, pout, seq); |
242 |
+ |
if (freopen(fbuf, "w", stdout) == NULL) { |
243 |
+ |
sprintf(errmsg, |
244 |
+ |
"cannot open output file \"%s\"", fbuf); |
245 |
+ |
error(SYSTEM, errmsg); |
246 |
+ |
} |
247 |
+ |
#ifdef MSDOS |
248 |
+ |
setmode(fileno(stdout), O_BINARY); |
249 |
+ |
#endif |
250 |
+ |
dupheader(); |
251 |
+ |
} |
252 |
+ |
hres = hresolu; vres = vresolu; pa = pixaspect; |
253 |
+ |
if (prvr != NULL) |
254 |
+ |
if (viewfile(prvr, &ourview, &rs) <= 0 |
255 |
+ |
|| rs.or != PIXSTANDARD) { |
256 |
+ |
sprintf(errmsg, |
257 |
+ |
"cannot recover view parameters from \"%s\"", prvr); |
258 |
+ |
error(WARNING, errmsg); |
259 |
+ |
} else { |
260 |
+ |
pa = 0.0; |
261 |
+ |
hres = scanlen(&rs); |
262 |
+ |
vres = numscans(&rs); |
263 |
+ |
} |
264 |
+ |
if ((cp = setview(&ourview)) != NULL) |
265 |
+ |
error(USER, cp); |
266 |
+ |
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
267 |
+ |
if (seq) { |
268 |
+ |
if (ralrm > 0) { |
269 |
+ |
fprintf(stderr, "FRAME %d:", seq); |
270 |
+ |
fprintview(&ourview, stderr); |
271 |
+ |
putc('\n', stderr); |
272 |
+ |
fflush(stderr); |
273 |
+ |
} |
274 |
+ |
printf("FRAME=%d\n", seq); |
275 |
+ |
} |
276 |
+ |
fputs(VIEWSTR, stdout); |
277 |
+ |
fprintview(&ourview, stdout); |
278 |
+ |
putchar('\n'); |
279 |
+ |
if (pa < .99 || pa > 1.01) |
280 |
+ |
fputaspect(pa, stdout); |
281 |
+ |
fputformat(COLRFMT, stdout); |
282 |
+ |
putchar('\n'); |
283 |
+ |
if (zout != NULL) |
284 |
+ |
sprintf(cp=fbuf, zout, seq); |
285 |
+ |
else |
286 |
+ |
cp = NULL; |
287 |
+ |
render(cp, prvr); |
288 |
+ |
prvr = NULL; |
289 |
+ |
} while (seq++); |
290 |
+ |
} |
291 |
|
|
292 |
< |
ourview.hresolu -= ourview.hresolu % psample; |
293 |
< |
ourview.vresolu -= ourview.vresolu % psample; |
294 |
< |
|
292 |
> |
|
293 |
> |
nextview(fp) /* get next view from fp */ |
294 |
> |
FILE *fp; |
295 |
> |
{ |
296 |
> |
char linebuf[256]; |
297 |
> |
|
298 |
> |
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
299 |
> |
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
300 |
> |
return(0); |
301 |
> |
return(EOF); |
302 |
> |
} |
303 |
> |
|
304 |
> |
|
305 |
> |
render(zfile, oldfile) /* render the scene */ |
306 |
> |
char *zfile, *oldfile; |
307 |
> |
{ |
308 |
> |
extern long lseek(); |
309 |
> |
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
310 |
> |
float *zbar[MAXDIV+1]; /* z values */ |
311 |
> |
char *sampdens; /* previous sample density */ |
312 |
> |
int ypos; /* current scanline */ |
313 |
> |
int ystep; /* current y step size */ |
314 |
> |
int hstep; /* h step size */ |
315 |
> |
int zfd; |
316 |
> |
COLOR *colptr; |
317 |
> |
float *zptr; |
318 |
> |
register int i; |
319 |
> |
/* allocate scanlines */ |
320 |
|
for (i = 0; i <= psample; i++) { |
321 |
< |
scanbar[i] = (COLOR *)malloc((ourview.hresolu+1)*sizeof(COLOR)); |
321 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
322 |
|
if (scanbar[i] == NULL) |
323 |
< |
error(SYSTEM, "out of memory in render"); |
323 |
> |
goto memerr; |
324 |
|
} |
325 |
< |
|
325 |
> |
hstep = (psample*140+49)/99; /* quincunx sampling */ |
326 |
> |
ystep = (psample*99+70)/140; |
327 |
> |
if (hstep > 2) { |
328 |
> |
i = hres/hstep + 2; |
329 |
> |
if ((sampdens = malloc(i)) == NULL) |
330 |
> |
goto memerr; |
331 |
> |
while (i--) |
332 |
> |
sampdens[i] = hstep; |
333 |
> |
} else |
334 |
> |
sampdens = NULL; |
335 |
> |
/* open z file */ |
336 |
> |
if (zfile != NULL) { |
337 |
> |
if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
338 |
> |
sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
339 |
> |
error(SYSTEM, errmsg); |
340 |
> |
} |
341 |
> |
#ifdef MSDOS |
342 |
> |
setmode(zfd, O_BINARY); |
343 |
> |
#endif |
344 |
> |
for (i = 0; i <= psample; i++) { |
345 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
346 |
> |
if (zbar[i] == NULL) |
347 |
> |
goto memerr; |
348 |
> |
} |
349 |
> |
} else { |
350 |
> |
zfd = -1; |
351 |
> |
for (i = 0; i <= psample; i++) |
352 |
> |
zbar[i] = NULL; |
353 |
> |
} |
354 |
|
/* write out boundaries */ |
355 |
< |
printf("-Y %d +X %d\n", ourview.vresolu, ourview.hresolu); |
356 |
< |
|
357 |
< |
ypos = ourview.vresolu - salvage(oldfile); /* find top line */ |
358 |
< |
fillscanline(scanbar[0], ypos, psample); /* top scan */ |
359 |
< |
|
360 |
< |
for (ypos -= psample; ypos > -psample; ypos -= psample) { |
361 |
< |
|
362 |
< |
colptr = scanbar[psample]; /* get last scanline */ |
363 |
< |
scanbar[psample] = scanbar[0]; |
355 |
> |
fprtresolu(hres, vres, stdout); |
356 |
> |
/* recover file and compute first */ |
357 |
> |
i = salvage(oldfile); |
358 |
> |
if (zfd != -1 && i > 0 && |
359 |
> |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
360 |
> |
error(SYSTEM, "z file seek error in render"); |
361 |
> |
pctdone = 100.0*i/vres; |
362 |
> |
if (ralrm > 0) /* report init stats */ |
363 |
> |
report(); |
364 |
> |
#ifndef BSD |
365 |
> |
else |
366 |
> |
#endif |
367 |
> |
signal(SIGALRM, report); |
368 |
> |
ypos = vres-1 - i; |
369 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
370 |
> |
/* compute scanlines */ |
371 |
> |
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
372 |
> |
/* bottom adjust? */ |
373 |
> |
if (ypos < 0) { |
374 |
> |
ystep += ypos; |
375 |
> |
ypos = 0; |
376 |
> |
} |
377 |
> |
colptr = scanbar[ystep]; /* move base to top */ |
378 |
> |
scanbar[ystep] = scanbar[0]; |
379 |
|
scanbar[0] = colptr; |
380 |
< |
|
381 |
< |
fillscanline(scanbar[0], ypos, psample); /* base scan */ |
382 |
< |
|
383 |
< |
fillscanbar(scanbar, ypos, psample); |
384 |
< |
|
385 |
< |
for (i = psample-1; i >= 0; i--) |
386 |
< |
if (fwritescan(scanbar[i], ourview.hresolu, stdout) < 0) |
380 |
> |
zptr = zbar[ystep]; |
381 |
> |
zbar[ystep] = zbar[0]; |
382 |
> |
zbar[0] = zptr; |
383 |
> |
/* fill base line */ |
384 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, |
385 |
> |
hres, ypos, hstep); |
386 |
> |
/* fill bar */ |
387 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
388 |
> |
/* write it out */ |
389 |
> |
#ifndef BSD |
390 |
> |
signal(SIGALRM, SIG_IGN); /* don't interrupt writes */ |
391 |
> |
#endif |
392 |
> |
for (i = ystep; i > 0; i--) { |
393 |
> |
if (zfd != -1 && write(zfd, (char *)zbar[i], |
394 |
> |
hres*sizeof(float)) |
395 |
> |
< hres*sizeof(float)) |
396 |
|
goto writerr; |
397 |
+ |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
398 |
+ |
goto writerr; |
399 |
+ |
} |
400 |
|
if (fflush(stdout) == EOF) |
401 |
|
goto writerr; |
402 |
< |
pctdone = 100.0*(ourview.vresolu-ypos)/ourview.vresolu; |
402 |
> |
/* record progress */ |
403 |
> |
pctdone = 100.0*(vres-1-ypos)/vres; |
404 |
> |
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
405 |
> |
report(); |
406 |
> |
#ifndef BSD |
407 |
> |
else |
408 |
> |
signal(SIGALRM, report); |
409 |
> |
#endif |
410 |
|
} |
411 |
< |
|
411 |
> |
/* clean up */ |
412 |
> |
signal(SIGALRM, SIG_IGN); |
413 |
> |
if (zfd != -1) { |
414 |
> |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
415 |
> |
< hres*sizeof(float)) |
416 |
> |
goto writerr; |
417 |
> |
if (close(zfd) == -1) |
418 |
> |
goto writerr; |
419 |
> |
for (i = 0; i <= psample; i++) |
420 |
> |
free((char *)zbar[i]); |
421 |
> |
} |
422 |
> |
fwritescan(scanbar[0], hres, stdout); |
423 |
> |
if (fflush(stdout) == EOF) |
424 |
> |
goto writerr; |
425 |
|
for (i = 0; i <= psample; i++) |
426 |
|
free((char *)scanbar[i]); |
427 |
+ |
if (sampdens != NULL) |
428 |
+ |
free(sampdens); |
429 |
+ |
pctdone = 100.0; |
430 |
+ |
if (ralrm > 0) |
431 |
+ |
report(); |
432 |
|
return; |
433 |
|
writerr: |
434 |
|
error(SYSTEM, "write error in render"); |
435 |
+ |
memerr: |
436 |
+ |
error(SYSTEM, "out of memory in render"); |
437 |
|
} |
438 |
|
|
439 |
|
|
440 |
< |
fillscanline(scanline, y, xstep) /* fill scan line at y */ |
441 |
< |
register COLOR *scanline; |
442 |
< |
int y, xstep; |
440 |
> |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
441 |
> |
register COLOR *scanline; |
442 |
> |
register float *zline; |
443 |
> |
register char *sd; |
444 |
> |
int xres, y, xstep; |
445 |
|
{ |
446 |
< |
int b = xstep; |
446 |
> |
static int nc = 0; /* number of calls */ |
447 |
> |
int bl = xstep, b = xstep; |
448 |
> |
double z; |
449 |
|
register int i; |
450 |
|
|
451 |
< |
pixvalue(scanline[0], 0, y); |
452 |
< |
|
453 |
< |
for (i = xstep; i <= ourview.hresolu; i += xstep) { |
454 |
< |
|
455 |
< |
pixvalue(scanline[i], i, y); |
456 |
< |
|
457 |
< |
b = fillsample(scanline+i-xstep, i-xstep, y, xstep, 0, b/2); |
451 |
> |
z = pixvalue(scanline[0], 0, y); |
452 |
> |
if (zline) zline[0] = z; |
453 |
> |
/* zig-zag start for quincunx pattern */ |
454 |
> |
for (i = ++nc & 1 ? xstep : xstep/2; i < xres-1+xstep; i += xstep) { |
455 |
> |
if (i >= xres) { |
456 |
> |
xstep += xres-1-i; |
457 |
> |
i = xres-1; |
458 |
> |
} |
459 |
> |
z = pixvalue(scanline[i], i, y); |
460 |
> |
if (zline) zline[i] = z; |
461 |
> |
if (sd) b = sd[0] > sd[1] ? sd[0] : sd[1]; |
462 |
> |
if (i <= xstep) |
463 |
> |
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
464 |
> |
else |
465 |
> |
b = fillsample(scanline+i-xstep, |
466 |
> |
zline ? zline+i-xstep : NULL, |
467 |
> |
i-xstep, y, xstep, 0, b/2); |
468 |
> |
if (sd) *sd++ = nc & 1 ? bl : b; |
469 |
> |
bl = b; |
470 |
|
} |
471 |
+ |
if (sd && nc & 1) *sd = bl; |
472 |
|
} |
473 |
|
|
474 |
|
|
475 |
< |
fillscanbar(scanbar, y, ysize) /* fill interior */ |
476 |
< |
register COLOR *scanbar[]; |
477 |
< |
int y, ysize; |
475 |
> |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
476 |
> |
register COLOR *scanbar[]; |
477 |
> |
register float *zbar[]; |
478 |
> |
int xres, y, ysize; |
479 |
|
{ |
480 |
|
COLOR vline[MAXDIV+1]; |
481 |
+ |
float zline[MAXDIV+1]; |
482 |
|
int b = ysize; |
483 |
|
register int i, j; |
484 |
|
|
485 |
< |
for (i = 0; i < ourview.hresolu; i++) { |
485 |
> |
for (i = 0; i < xres; i++) { |
486 |
|
|
487 |
|
copycolor(vline[0], scanbar[0][i]); |
488 |
|
copycolor(vline[ysize], scanbar[ysize][i]); |
489 |
+ |
if (zbar[0]) { |
490 |
+ |
zline[0] = zbar[0][i]; |
491 |
+ |
zline[ysize] = zbar[ysize][i]; |
492 |
+ |
} |
493 |
|
|
494 |
< |
b = fillsample(vline, i, y, 0, ysize, b/2); |
494 |
> |
b = fillsample(vline, zbar[0] ? zline : NULL, |
495 |
> |
i, y, 0, ysize, b/2); |
496 |
|
|
497 |
|
for (j = 1; j < ysize; j++) |
498 |
|
copycolor(scanbar[j][i], vline[j]); |
499 |
+ |
if (zbar[0]) |
500 |
+ |
for (j = 1; j < ysize; j++) |
501 |
+ |
zbar[j][i] = zline[j]; |
502 |
|
} |
503 |
|
} |
504 |
|
|
505 |
|
|
506 |
|
int |
507 |
< |
fillsample(colline, x, y, xlen, ylen, b) /* fill interior points */ |
508 |
< |
register COLOR *colline; |
507 |
> |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
508 |
> |
register COLOR *colline; |
509 |
> |
register float *zline; |
510 |
|
int x, y; |
511 |
|
int xlen, ylen; |
512 |
|
int b; |
513 |
|
{ |
514 |
< |
double ratio; |
514 |
> |
double ratio; |
515 |
> |
double z; |
516 |
|
COLOR ctmp; |
517 |
|
int ncut; |
518 |
|
register int len; |
525 |
|
if (len <= 1) /* limit recursion */ |
526 |
|
return(0); |
527 |
|
|
528 |
< |
if (b > 0 || bigdiff(colline[0], colline[len], maxdiff)) { |
528 |
> |
if (b > 0 |
529 |
> |
|| (zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
530 |
> |
|| bigdiff(colline[0], colline[len], maxdiff)) { |
531 |
|
|
532 |
< |
pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
532 |
> |
z = pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
533 |
> |
if (zline) zline[len>>1] = z; |
534 |
|
ncut = 1; |
535 |
|
|
536 |
|
} else { /* interpolate */ |
538 |
|
copycolor(colline[len>>1], colline[len]); |
539 |
|
ratio = (double)(len>>1) / len; |
540 |
|
scalecolor(colline[len>>1], ratio); |
541 |
< |
copycolor(ctmp, colline[0]); |
541 |
> |
if (zline) zline[len>>1] = zline[len] * ratio; |
542 |
|
ratio = 1.0 - ratio; |
543 |
+ |
copycolor(ctmp, colline[0]); |
544 |
|
scalecolor(ctmp, ratio); |
545 |
|
addcolor(colline[len>>1], ctmp); |
546 |
+ |
if (zline) zline[len>>1] += zline[0] * ratio; |
547 |
|
ncut = 0; |
548 |
|
} |
549 |
|
/* recurse */ |
550 |
< |
ncut += fillsample(colline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
550 |
> |
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
551 |
|
|
552 |
< |
ncut += fillsample(colline + (len>>1), x + (xlen>>1), y + (ylen>>1), |
553 |
< |
xlen - (xlen>>1), ylen - (ylen>>1), b/2); |
552 |
> |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
553 |
> |
x+(xlen>>1), y+(ylen>>1), |
554 |
> |
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
555 |
|
|
556 |
|
return(ncut); |
557 |
|
} |
558 |
|
|
559 |
|
|
560 |
+ |
double |
561 |
|
pixvalue(col, x, y) /* compute pixel value */ |
562 |
|
COLOR col; /* returned color */ |
563 |
|
int x, y; /* pixel position */ |
564 |
|
{ |
565 |
< |
static RAY thisray; /* our ray for this pixel */ |
565 |
> |
static RAY thisray; |
566 |
|
|
567 |
< |
rayview(thisray.rorg, thisray.rdir, &ourview, |
568 |
< |
x + pixjitter(), y + pixjitter()); |
567 |
> |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
568 |
> |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
569 |
> |
setcolor(col, 0.0, 0.0, 0.0); |
570 |
> |
return(0.0); |
571 |
> |
} |
572 |
|
|
573 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
574 |
< |
|
574 |
> |
|
575 |
> |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
576 |
> |
|
577 |
|
rayvalue(&thisray); /* trace ray */ |
578 |
|
|
579 |
|
copycolor(col, thisray.rcol); /* return color */ |
580 |
+ |
|
581 |
+ |
return(thisray.rt); /* return distance */ |
582 |
|
} |
583 |
|
|
584 |
|
|
592 |
|
|
593 |
|
if (oldfile == NULL) |
594 |
|
return(0); |
595 |
< |
else if ((fp = fopen(oldfile, "r")) == NULL) { |
595 |
> |
|
596 |
> |
if ((fp = fopen(oldfile, "r")) == NULL) { |
597 |
|
sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
598 |
|
error(WARNING, errmsg); |
599 |
|
return(0); |
600 |
|
} |
601 |
+ |
#ifdef MSDOS |
602 |
+ |
setmode(fileno(fp), O_BINARY); |
603 |
+ |
#endif |
604 |
|
/* discard header */ |
605 |
|
getheader(fp, NULL); |
606 |
|
/* get picture size */ |
607 |
< |
if (fscanf(fp, "-Y %d +X %d\n", &y, &x) != 2) { |
607 |
> |
if (!fscnresolu(&x, &y, fp)) { |
608 |
|
sprintf(errmsg, "bad recover file \"%s\"", oldfile); |
609 |
|
error(WARNING, errmsg); |
610 |
|
fclose(fp); |
611 |
|
return(0); |
612 |
|
} |
613 |
|
|
614 |
< |
if (x != ourview.hresolu || y != ourview.vresolu) { |
614 |
> |
if (x != hres || y != vres) { |
615 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
616 |
|
oldfile); |
617 |
|
error(USER, errmsg); |
276 |
– |
return(0); |
618 |
|
} |
619 |
|
|
620 |
< |
scanline = (COLR *)malloc(ourview.hresolu*sizeof(COLR)); |
620 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
621 |
|
if (scanline == NULL) |
622 |
|
error(SYSTEM, "out of memory in salvage"); |
623 |
< |
for (y = 0; y < ourview.vresolu; y++) { |
624 |
< |
if (freadcolrs(scanline, ourview.hresolu, fp) < 0) |
623 |
> |
for (y = 0; y < vres; y++) { |
624 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
625 |
|
break; |
626 |
< |
if (fwritecolrs(scanline, ourview.hresolu, stdout) < 0) |
626 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
627 |
|
goto writerr; |
628 |
|
} |
629 |
|
if (fflush(stdout) == EOF) |
633 |
|
unlink(oldfile); |
634 |
|
return(y); |
635 |
|
writerr: |
636 |
< |
error(SYSTEM, "write error in salvage"); |
636 |
> |
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
637 |
> |
error(SYSTEM, errmsg); |
638 |
> |
} |
639 |
> |
|
640 |
> |
|
641 |
> |
int |
642 |
> |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
643 |
> |
register int x, y; |
644 |
> |
int xres, yres; |
645 |
> |
{ |
646 |
> |
x -= y; |
647 |
> |
while (x < 0) |
648 |
> |
x += xres; |
649 |
> |
return((((x>>2)*yres + y) << 2) + (x & 3)); |
650 |
|
} |