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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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#include "standard.h" |
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|
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#include <fcntl.h> |
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|
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#include <ctype.h> |
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|
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#include "view.h" |
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|
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#include "color.h" |
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|
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#include "resolu.h" |
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|
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#ifndef BSD |
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#define vfork fork |
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#endif |
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|
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#define pscan(y) (ourpict+(y)*hresolu) |
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#define zscan(y) (ourzbuf+(y)*hresolu) |
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|
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#define F_FORE 1 /* fill foreground */ |
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#define F_BACK 2 /* fill background */ |
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|
35 |
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#define PACKSIZ 42 /* calculation packet size */ |
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#define PACKSIZ 256 /* max. calculation packet size */ |
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|
37 |
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#define RTCOM "rtrace -h -ovl -fff -x %d %s" |
37 |
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#define RTCOM "rtrace -h- -ovl -fff " |
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|
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#define ABS(x) ((x)>0?(x):-(x)) |
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|
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|
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char *progname; |
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|
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int fill = F_FORE|F_BACK; /* selected fill algorithm */ |
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int fillo = F_FORE|F_BACK; /* selected fill options */ |
56 |
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int fillsamp = 0; /* sample separation (0 == inf) */ |
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extern int backfill(), rcalfill(); /* fill functions */ |
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int (*deffill)() = backfill; /* selected fill function */ |
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int (*fillfunc)() = backfill; /* selected fill function */ |
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COLR backcolr = BLKCOLR; /* background color */ |
60 |
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double backz = 0.0; /* background z value */ |
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int normdist = 1; /* normalized distance? */ |
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|
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VIEW theirview = STDVIEW; /* input view */ |
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int gotview; /* got input view? */ |
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int thresolu, tvresolu; /* input resolution */ |
66 |
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int wrongformat = 0; /* input in another format? */ |
67 |
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RESOLU tresolu; /* input resolution */ |
68 |
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double theirexp; /* input picture exposure */ |
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double theirs2ours[4][4]; /* transformation matrix */ |
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int hasmatrix = 0; /* has transformation matrix */ |
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|
72 |
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int childpid = -1; /* id of fill process */ |
73 |
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FILE *psend, *precv; /* pipes to/from fill calculation */ |
74 |
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int queue[PACKSIZ][2]; /* pending pixels */ |
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int PDesc[3] = {-1,-1,-1}; /* rtrace process descriptor */ |
73 |
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#define childpid (PDesc[2]) |
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unsigned short queue[PACKSIZ][2]; /* pending pixels */ |
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int packsiz; /* actual packet size */ |
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int queuesiz; /* number of pixels pending */ |
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|
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|
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int argc; |
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char *argv[]; |
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{ |
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#define check(olen,narg) if (argv[i][olen] || narg >= argc-i) goto badopt |
84 |
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extern double atof(); |
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#define check(ol,al) if (argv[i][ol] || \ |
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badarg(argc-i-1,argv+i+1,al)) \ |
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goto badopt |
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int gotvfile = 0; |
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char *zfile = NULL; |
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char *err; |
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} |
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switch (argv[i][1]) { |
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case 't': /* threshold */ |
101 |
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check(2,1); |
101 |
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check(2,"f"); |
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zeps = atof(argv[++i]); |
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break; |
104 |
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case 'n': /* dist. normalized? */ |
105 |
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check(2,0); |
105 |
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check(2,NULL); |
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normdist = !normdist; |
107 |
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break; |
108 |
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case 'f': /* fill type */ |
109 |
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switch (argv[i][2]) { |
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case '0': /* none */ |
111 |
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check(3,0); |
112 |
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fill = 0; |
111 |
> |
check(3,NULL); |
112 |
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fillo = 0; |
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break; |
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case 'f': /* foreground */ |
115 |
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check(3,0); |
116 |
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fill = F_FORE; |
115 |
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check(3,NULL); |
116 |
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fillo = F_FORE; |
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break; |
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case 'b': /* background */ |
119 |
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check(3,0); |
120 |
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fill = F_BACK; |
119 |
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check(3,NULL); |
120 |
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fillo = F_BACK; |
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break; |
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case 'a': /* all */ |
123 |
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check(3,0); |
124 |
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fill = F_FORE|F_BACK; |
123 |
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check(3,NULL); |
124 |
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fillo = F_FORE|F_BACK; |
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break; |
126 |
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case 's': /* sample */ |
127 |
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check(3,"i"); |
128 |
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fillsamp = atoi(argv[++i]); |
129 |
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break; |
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case 'c': /* color */ |
131 |
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check(3,3); |
132 |
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deffill = backfill; |
131 |
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check(3,"fff"); |
132 |
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fillfunc = backfill; |
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setcolr(backcolr, atof(argv[i+1]), |
134 |
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atof(argv[i+2]), atof(argv[i+3])); |
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i += 3; |
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break; |
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case 'z': /* z value */ |
138 |
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check(3,1); |
139 |
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deffill = backfill; |
138 |
> |
check(3,"f"); |
139 |
> |
fillfunc = backfill; |
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backz = atof(argv[++i]); |
141 |
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break; |
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case 'r': /* rtrace */ |
143 |
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check(3,1); |
144 |
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deffill = rcalfill; |
143 |
> |
check(3,"s"); |
144 |
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fillfunc = rcalfill; |
145 |
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calstart(RTCOM, argv[++i]); |
146 |
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break; |
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default: |
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} |
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break; |
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case 'z': /* z file */ |
152 |
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check(2,1); |
152 |
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check(2,"s"); |
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zfile = argv[++i]; |
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break; |
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case 'x': /* x resolution */ |
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check(2,1); |
156 |
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check(2,"i"); |
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hresolu = atoi(argv[++i]); |
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break; |
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case 'y': /* y resolution */ |
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check(2,1); |
160 |
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check(2,"i"); |
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vresolu = atoi(argv[++i]); |
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break; |
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case 'p': /* pixel aspect */ |
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check(2,1); |
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check(2,"f"); |
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pixaspect = atof(argv[++i]); |
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break; |
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case 'v': /* view file */ |
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if (argv[i][2] != 'f') |
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goto badopt; |
170 |
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check(3,1); |
171 |
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gotvfile = viewfile(argv[++i], &ourview); |
170 |
> |
check(3,"s"); |
171 |
> |
gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
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if (gotvfile < 0) { |
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perror(argv[i]); |
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exit(1); |
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/* check arguments */ |
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if ((argc-i)%2) |
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goto userr; |
191 |
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if (fillsamp == 1) |
192 |
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fillo &= ~F_BACK; |
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/* set view */ |
194 |
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if (err = setview(&ourview)) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
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for ( ; i < argc; i += 2) |
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addpicture(argv[i], argv[i+1]); |
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/* fill in spaces */ |
208 |
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if (fill&F_BACK) |
209 |
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backpicture(); |
208 |
> |
if (fillo&F_BACK) |
209 |
> |
backpicture(fillfunc, fillsamp); |
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else |
211 |
< |
fillpicture(); |
211 |
> |
fillpicture(fillfunc); |
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/* close calculation */ |
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caldone(); |
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/* add to header */ |
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printargs(argc, argv, stdout); |
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if (gotvfile) { |
217 |
< |
printf(VIEWSTR); |
217 |
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fputs(VIEWSTR, stdout); |
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fprintview(&ourview, stdout); |
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printf("\n"); |
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putc('\n', stdout); |
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} |
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if (pixaspect < .99 || pixaspect > 1.01) |
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fputaspect(pixaspect, stdout); |
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if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
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fputexpos(ourexp, stdout); |
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printf("\n"); |
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fputformat(COLRFMT, stdout); |
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putc('\n', stdout); |
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/* write picture */ |
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writepicture(); |
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/* write z file */ |
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headline(s) /* process header string */ |
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char *s; |
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{ |
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static char *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL}; |
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register char **an; |
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char fmt[32]; |
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|
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printf("\t%s", s); |
248 |
> |
if (isformat(s)) { |
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formatval(fmt, s); |
250 |
> |
wrongformat = strcmp(fmt, COLRFMT); |
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> |
return; |
252 |
> |
} |
253 |
> |
putc('\t', stdout); |
254 |
> |
fputs(s, stdout); |
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|
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if (isexpos(s)) { |
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theirexp *= exposval(s); |
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return; |
259 |
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} |
260 |
< |
for (an = altname; *an != NULL; an++) |
261 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
233 |
< |
if (sscanview(&theirview, s+strlen(*an)) > 0) |
234 |
< |
gotview++; |
235 |
< |
break; |
236 |
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} |
260 |
> |
if (isview(s) && sscanview(&theirview, s) > 0) |
261 |
> |
gotview++; |
262 |
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} |
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|
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addpicture(pfile, zspec) /* add picture to output */ |
266 |
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char *pfile, *zspec; |
267 |
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{ |
268 |
< |
extern double atof(); |
269 |
< |
FILE *pfp, *zfp; |
268 |
> |
FILE *pfp; |
269 |
> |
int zfd; |
270 |
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char *err; |
271 |
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COLR *scanin; |
272 |
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float *zin; |
281 |
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theirexp = 1.0; |
282 |
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gotview = 0; |
283 |
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printf("%s:\n", pfile); |
284 |
< |
getheader(pfp, headline); |
285 |
< |
if (!gotview || fgetresolu(&thresolu, &tvresolu, pfp) |
286 |
< |
!= (YMAJOR|YDECR)) { |
262 |
< |
fprintf(stderr, "%s: picture view error\n", pfile); |
284 |
> |
getheader(pfp, headline, NULL); |
285 |
> |
if (wrongformat || !gotview || !fgetsresolu(&tresolu, pfp)) { |
286 |
> |
fprintf(stderr, "%s: picture format error\n", pfile); |
287 |
|
exit(1); |
288 |
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} |
289 |
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if (ourexp <= 0) |
295 |
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exit(1); |
296 |
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} |
297 |
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/* compute transformation */ |
298 |
< |
pixform(theirs2ours, &theirview, &ourview); |
298 |
> |
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
299 |
|
/* allocate scanlines */ |
300 |
< |
scanin = (COLR *)malloc(thresolu*sizeof(COLR)); |
301 |
< |
zin = (float *)malloc(thresolu*sizeof(float)); |
302 |
< |
plast = (struct position *)calloc(thresolu, sizeof(struct position)); |
300 |
> |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
301 |
> |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
302 |
> |
plast = (struct position *)calloc(scanlen(&tresolu), |
303 |
> |
sizeof(struct position)); |
304 |
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if (scanin == NULL || zin == NULL || plast == NULL) |
305 |
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syserror(); |
306 |
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/* get z specification or file */ |
307 |
< |
if ((zfp = fopen(zspec, "r")) == NULL) { |
307 |
> |
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
308 |
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double zvalue; |
309 |
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register int x; |
310 |
|
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) { |
311 |
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perror(zspec); |
312 |
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exit(1); |
313 |
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} |
314 |
< |
for (x = 0; x < thresolu; x++) |
314 |
> |
for (x = scanlen(&tresolu); x-- > 0; ) |
315 |
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zin[x] = zvalue; |
316 |
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} |
317 |
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/* load image */ |
318 |
< |
for (y = tvresolu-1; y >= 0; y--) { |
319 |
< |
if (freadcolrs(scanin, thresolu, pfp) < 0) { |
318 |
> |
for (y = 0; y < numscans(&tresolu); y++) { |
319 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
320 |
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fprintf(stderr, "%s: read error\n", pfile); |
321 |
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exit(1); |
322 |
|
} |
323 |
< |
if (zfp != NULL |
324 |
< |
&& fread(zin,sizeof(float),thresolu,zfp) < thresolu) { |
323 |
> |
if (zfd != -1 && read(zfd,(char *)zin, |
324 |
> |
scanlen(&tresolu)*sizeof(float)) |
325 |
> |
< scanlen(&tresolu)*sizeof(float)) { |
326 |
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fprintf(stderr, "%s: read error\n", zspec); |
327 |
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exit(1); |
328 |
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} |
333 |
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free((char *)zin); |
334 |
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free((char *)plast); |
335 |
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fclose(pfp); |
336 |
< |
if (zfp != NULL) |
337 |
< |
fclose(zfp); |
336 |
> |
if (zfd != -1) |
337 |
> |
close(zfd); |
338 |
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} |
339 |
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|
340 |
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|
344 |
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{ |
345 |
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double m4t[4][4]; |
346 |
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|
347 |
+ |
if (vw1->type != VT_PER && vw1->type != VT_PAR) |
348 |
+ |
return(0); |
349 |
+ |
if (vw2->type != VT_PER && vw2->type != VT_PAR) |
350 |
+ |
return(0); |
351 |
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setident4(xfmat); |
352 |
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xfmat[0][0] = vw1->hvec[0]; |
353 |
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xfmat[0][1] = vw1->hvec[1]; |
375 |
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m4t[2][2] = vw2->vdir[2]; |
376 |
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m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
377 |
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multmat4(xfmat, xfmat, m4t); |
378 |
+ |
return(1); |
379 |
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} |
380 |
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|
381 |
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|
386 |
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struct position *lasty; /* input/output */ |
387 |
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{ |
388 |
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extern double sqrt(); |
389 |
< |
double pos[3]; |
389 |
> |
FVECT pos; |
390 |
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struct position lastx, newpos; |
391 |
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register int x; |
392 |
|
|
393 |
< |
for (x = thresolu-1; x >= 0; x--) { |
394 |
< |
pos[0] = (x+.5)/thresolu + theirview.hoff - .5; |
395 |
< |
pos[1] = (y+.5)/tvresolu + theirview.voff - .5; |
393 |
> |
lastx.z = 0; |
394 |
> |
for (x = scanlen(&tresolu); x-- > 0; ) { |
395 |
> |
pix2loc(pos, &tresolu, x, y); |
396 |
|
pos[2] = zline[x]; |
397 |
< |
if (theirview.type == VT_PER) { |
367 |
< |
if (normdist) /* adjust for eye-ray distance */ |
368 |
< |
pos[2] /= sqrt( 1. |
369 |
< |
+ pos[0]*pos[0]*theirview.hn2 |
370 |
< |
+ pos[1]*pos[1]*theirview.vn2 ); |
371 |
< |
pos[0] *= pos[2]; |
372 |
< |
pos[1] *= pos[2]; |
373 |
< |
} |
374 |
< |
multp3(pos, pos, theirs2ours); |
375 |
< |
if (pos[2] <= 0) { |
397 |
> |
if (movepixel(pos) < 0) { |
398 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
399 |
|
continue; |
400 |
|
} |
379 |
– |
if (ourview.type == VT_PER) { |
380 |
– |
pos[0] /= pos[2]; |
381 |
– |
pos[1] /= pos[2]; |
382 |
– |
} |
383 |
– |
pos[0] += .5 - ourview.hoff; |
384 |
– |
pos[1] += .5 - ourview.voff; |
401 |
|
newpos.x = pos[0] * hresolu; |
402 |
|
newpos.y = pos[1] * vresolu; |
403 |
|
newpos.z = zline[x]; |
427 |
|
register int x, y; /* final position */ |
428 |
|
|
429 |
|
/* compute vector p0p1 */ |
430 |
< |
if (fill&F_FORE && ABS(p1->z-p0->z) <= zt) { |
430 |
> |
if (fillo&F_FORE && ABS(p1->z-p0->z) <= zt) { |
431 |
|
s1x = p1->x - p0->x; |
432 |
|
s1y = p1->y - p0->y; |
433 |
|
l1 = ABS(s1x); |
438 |
|
p1isy = -1; |
439 |
|
} |
440 |
|
/* compute vector p0p2 */ |
441 |
< |
if (fill&F_FORE && ABS(p2->z-p0->z) <= zt) { |
441 |
> |
if (fillo&F_FORE && ABS(p2->z-p0->z) <= zt) { |
442 |
|
s2x = p2->x - p0->x; |
443 |
|
s2y = p2->y - p0->y; |
444 |
|
if (p1isy == 1) |
456 |
|
y1 = p0->y + c1*s1y/l1; |
457 |
|
for (c2 = l2; c2-- > 0; ) { |
458 |
|
x = x1 + c2*s2x/l2; |
459 |
+ |
if (x < 0 || x >= hresolu) |
460 |
+ |
continue; |
461 |
|
y = y1 + c2*s2y/l2; |
462 |
+ |
if (y < 0 || y >= vresolu) |
463 |
+ |
continue; |
464 |
|
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
465 |
|
> zeps*zscan(y)[x]) { |
466 |
|
zscan(y)[x] = z; |
471 |
|
} |
472 |
|
|
473 |
|
|
474 |
< |
backpicture() /* background fill algorithm */ |
474 |
> |
movepixel(pos) /* reposition image point */ |
475 |
> |
FVECT pos; |
476 |
|
{ |
477 |
+ |
FVECT pt, direc; |
478 |
+ |
|
479 |
+ |
if (pos[2] <= 0) /* empty pixel */ |
480 |
+ |
return(-1); |
481 |
+ |
if (hasmatrix) { |
482 |
+ |
pos[0] += theirview.hoff - .5; |
483 |
+ |
pos[1] += theirview.voff - .5; |
484 |
+ |
if (theirview.type == VT_PER) { |
485 |
+ |
if (normdist) /* adjust for eye-ray distance */ |
486 |
+ |
pos[2] /= sqrt( 1. |
487 |
+ |
+ pos[0]*pos[0]*theirview.hn2 |
488 |
+ |
+ pos[1]*pos[1]*theirview.vn2 ); |
489 |
+ |
pos[0] *= pos[2]; |
490 |
+ |
pos[1] *= pos[2]; |
491 |
+ |
} |
492 |
+ |
multp3(pos, pos, theirs2ours); |
493 |
+ |
if (pos[2] <= 0) |
494 |
+ |
return(-1); |
495 |
+ |
if (ourview.type == VT_PER) { |
496 |
+ |
pos[0] /= pos[2]; |
497 |
+ |
pos[1] /= pos[2]; |
498 |
+ |
} |
499 |
+ |
pos[0] += .5 - ourview.hoff; |
500 |
+ |
pos[1] += .5 - ourview.voff; |
501 |
+ |
return(0); |
502 |
+ |
} |
503 |
+ |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
504 |
+ |
return(-1); |
505 |
+ |
pt[0] += direc[0]*pos[2]; |
506 |
+ |
pt[1] += direc[1]*pos[2]; |
507 |
+ |
pt[2] += direc[2]*pos[2]; |
508 |
+ |
viewloc(pos, &ourview, pt); |
509 |
+ |
if (pos[2] <= 0) |
510 |
+ |
return(-1); |
511 |
+ |
return(0); |
512 |
+ |
} |
513 |
+ |
|
514 |
+ |
|
515 |
+ |
backpicture(fill, samp) /* background fill algorithm */ |
516 |
+ |
int (*fill)(); |
517 |
+ |
int samp; |
518 |
+ |
{ |
519 |
|
int *yback, xback; |
520 |
|
int y; |
458 |
– |
COLR pfill; |
521 |
|
register int x, i; |
522 |
|
/* get back buffer */ |
523 |
|
yback = (int *)malloc(hresolu*sizeof(int)); |
564 |
|
xback = x-1; |
565 |
|
} |
566 |
|
/* |
567 |
< |
* Check to see if we have no background for |
568 |
< |
* this pixel. If not, use background color. |
567 |
> |
* If we have no background for this pixel, |
568 |
> |
* use the given fill function. |
569 |
|
*/ |
570 |
< |
if (xback < 0 && yback[x] < 0) { |
571 |
< |
(*deffill)(x,y); |
510 |
< |
continue; |
511 |
< |
} |
570 |
> |
if (xback < 0 && yback[x] < 0) |
571 |
> |
goto fillit; |
572 |
|
/* |
573 |
|
* Compare, and use the background that is |
574 |
|
* farther, unless one of them is next to us. |
575 |
+ |
* If the background is too distant, call |
576 |
+ |
* the fill function. |
577 |
|
*/ |
578 |
|
if ( yback[x] < 0 |
579 |
|
|| (xback >= 0 && ABS(x-xback) <= 1) |
580 |
|
|| ( ABS(y-yback[x]) > 1 |
581 |
|
&& zscan(yback[x])[x] |
582 |
|
< zscan(y)[xback] ) ) { |
583 |
+ |
if (samp > 0 && ABS(x-xback) >= samp) |
584 |
+ |
goto fillit; |
585 |
|
copycolr(pscan(y)[x],pscan(y)[xback]); |
586 |
|
zscan(y)[x] = zscan(y)[xback]; |
587 |
|
} else { |
588 |
+ |
if (samp > 0 && ABS(y-yback[x]) > samp) |
589 |
+ |
goto fillit; |
590 |
|
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
591 |
|
zscan(y)[x] = zscan(yback[x])[x]; |
592 |
|
} |
593 |
+ |
continue; |
594 |
+ |
fillit: |
595 |
+ |
(*fill)(x,y); |
596 |
+ |
if (fill == rcalfill) { /* use it */ |
597 |
+ |
clearqueue(); |
598 |
+ |
xback = x; |
599 |
+ |
yback[x] = y; |
600 |
+ |
} |
601 |
|
} else { /* full pixel */ |
602 |
|
yback[x] = -2; |
603 |
|
xback = -2; |
607 |
|
} |
608 |
|
|
609 |
|
|
610 |
< |
fillpicture() /* paint in empty pixels with default */ |
610 |
> |
fillpicture(fill) /* paint in empty pixels using fill */ |
611 |
> |
int (*fill)(); |
612 |
|
{ |
613 |
|
register int x, y; |
614 |
|
|
615 |
|
for (y = 0; y < vresolu; y++) |
616 |
|
for (x = 0; x < hresolu; x++) |
617 |
|
if (zscan(y)[x] <= 0) |
618 |
< |
(*deffill)(x,y); |
618 |
> |
(*fill)(x,y); |
619 |
|
} |
620 |
|
|
621 |
|
|
623 |
|
{ |
624 |
|
int y; |
625 |
|
|
626 |
< |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
626 |
> |
fprtresolu(hresolu, vresolu, stdout); |
627 |
|
for (y = vresolu-1; y >= 0; y--) |
628 |
|
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
629 |
|
syserror(); |
635 |
|
{ |
636 |
|
extern double sqrt(); |
637 |
|
int donorm = normdist && ourview.type == VT_PER; |
638 |
< |
FILE *fp; |
638 |
> |
int fd; |
639 |
|
int y; |
640 |
|
float *zout; |
641 |
|
|
642 |
< |
if ((fp = fopen(fname, "w")) == NULL) { |
642 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) { |
643 |
|
perror(fname); |
644 |
|
exit(1); |
645 |
|
} |
650 |
|
if (donorm) { |
651 |
|
double vx, yzn2; |
652 |
|
register int x; |
653 |
< |
yzn2 = y - .5*(vresolu-1); |
653 |
> |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
654 |
|
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
655 |
|
for (x = 0; x < hresolu; x++) { |
656 |
< |
vx = x - .5*(hresolu-1); |
656 |
> |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
657 |
|
zout[x] = zscan(y)[x] |
658 |
|
* sqrt(vx*vx*ourview.hn2 + yzn2); |
659 |
|
} |
660 |
|
} else |
661 |
|
zout = zscan(y); |
662 |
< |
if (fwrite(zout, sizeof(float), hresolu, fp) < hresolu) { |
662 |
> |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
663 |
> |
< hresolu*sizeof(float)) { |
664 |
|
perror(fname); |
665 |
|
exit(1); |
666 |
|
} |
667 |
|
} |
668 |
|
if (donorm) |
669 |
|
free((char *)zout); |
670 |
< |
fclose(fp); |
670 |
> |
close(fd); |
671 |
|
} |
672 |
|
|
673 |
|
|
692 |
|
} |
693 |
|
|
694 |
|
|
695 |
< |
calstart(prog, args) /* start fill calculation */ |
695 |
> |
calstart(prog, args) /* start fill calculation */ |
696 |
|
char *prog, *args; |
697 |
|
{ |
698 |
|
char combuf[512]; |
699 |
< |
int p0[2], p1[2]; |
699 |
> |
char *argv[64]; |
700 |
> |
int rval; |
701 |
> |
register char **wp, *cp; |
702 |
|
|
703 |
|
if (childpid != -1) { |
704 |
|
fprintf(stderr, "%s: too many calculations\n", progname); |
705 |
|
exit(1); |
706 |
|
} |
707 |
< |
sprintf(combuf, prog, PACKSIZ, args); |
708 |
< |
if (pipe(p0) < 0 || pipe(p1) < 0) |
709 |
< |
syserror(); |
710 |
< |
if ((childpid = vfork()) == 0) { /* fork calculation */ |
711 |
< |
close(p0[1]); |
712 |
< |
close(p1[0]); |
713 |
< |
if (p0[0] != 0) { |
714 |
< |
dup2(p0[0], 0); |
715 |
< |
close(p0[0]); |
716 |
< |
} |
717 |
< |
if (p1[1] != 1) { |
640 |
< |
dup2(p1[1], 1); |
641 |
< |
close(p1[1]); |
642 |
< |
} |
643 |
< |
execl("/bin/sh", "sh", "-c", combuf, 0); |
644 |
< |
perror("/bin/sh"); |
645 |
< |
_exit(127); |
707 |
> |
strcpy(combuf, prog); |
708 |
> |
strcat(combuf, args); |
709 |
> |
cp = combuf; |
710 |
> |
wp = argv; |
711 |
> |
for ( ; ; ) { |
712 |
> |
while (isspace(*cp)) cp++; |
713 |
> |
if (!*cp) break; |
714 |
> |
*wp++ = cp; |
715 |
> |
while (!isspace(*cp)) |
716 |
> |
if (!*cp++) goto done; |
717 |
> |
*cp++ = '\0'; |
718 |
|
} |
719 |
< |
if (childpid == -1) |
719 |
> |
done: |
720 |
> |
*wp = NULL; |
721 |
> |
/* start process */ |
722 |
> |
if ((rval = open_process(PDesc, argv)) < 0) |
723 |
|
syserror(); |
724 |
< |
close(p0[0]); |
725 |
< |
close(p1[1]); |
726 |
< |
if ((psend = fdopen(p0[1], "w")) == NULL) |
727 |
< |
syserror(); |
728 |
< |
if ((precv = fdopen(p1[0], "r")) == NULL) |
729 |
< |
syserror(); |
724 |
> |
if (rval == 0) { |
725 |
> |
fprintf(stderr, "%s: command not found\n", argv[0]); |
726 |
> |
exit(1); |
727 |
> |
} |
728 |
> |
packsiz = rval/(6*sizeof(float)) - 1; |
729 |
> |
if (packsiz > PACKSIZ) |
730 |
> |
packsiz = PACKSIZ; |
731 |
|
queuesiz = 0; |
732 |
|
} |
733 |
|
|
734 |
|
|
735 |
< |
caldone() /* done with calculation */ |
735 |
> |
caldone() /* done with calculation */ |
736 |
|
{ |
661 |
– |
int pid; |
662 |
– |
|
737 |
|
if (childpid == -1) |
738 |
|
return; |
665 |
– |
if (fclose(psend) == EOF) |
666 |
– |
syserror(); |
739 |
|
clearqueue(); |
740 |
< |
fclose(precv); |
669 |
< |
while ((pid = wait(0)) != -1 && pid != childpid) |
670 |
< |
; |
740 |
> |
close_process(PDesc); |
741 |
|
childpid = -1; |
742 |
|
} |
743 |
|
|
745 |
|
rcalfill(x, y) /* fill with ray-calculated pixel */ |
746 |
|
int x, y; |
747 |
|
{ |
748 |
< |
FVECT orig, dir; |
679 |
< |
float outbuf[6]; |
680 |
< |
|
681 |
< |
if (queuesiz >= PACKSIZ) { /* flush queue */ |
682 |
< |
if (fflush(psend) == EOF) |
683 |
< |
syserror(); |
748 |
> |
if (queuesiz >= packsiz) /* flush queue if needed */ |
749 |
|
clearqueue(); |
750 |
< |
} |
686 |
< |
/* send new ray */ |
687 |
< |
viewray(orig, dir, &ourview, (x+.5)/hresolu, (y+.5)/vresolu); |
688 |
< |
outbuf[0] = orig[0]; outbuf[1] = orig[1]; outbuf[2] = orig[2]; |
689 |
< |
outbuf[3] = dir[0]; outbuf[4] = dir[1]; outbuf[5] = dir[2]; |
690 |
< |
if (fwrite(outbuf, sizeof(float), 6, psend) < 6) |
691 |
< |
syserror(); |
692 |
< |
/* remember it */ |
750 |
> |
/* add position to queue */ |
751 |
|
queue[queuesiz][0] = x; |
752 |
|
queue[queuesiz][1] = y; |
753 |
|
queuesiz++; |
754 |
|
} |
755 |
|
|
756 |
|
|
757 |
< |
clearqueue() /* get results from queue */ |
757 |
> |
clearqueue() /* process queue */ |
758 |
|
{ |
759 |
< |
float inbuf[4]; |
759 |
> |
FVECT orig, dir; |
760 |
> |
float fbuf[6*(PACKSIZ+1)]; |
761 |
> |
register float *fbp; |
762 |
|
register int i; |
763 |
|
|
764 |
+ |
fbp = fbuf; |
765 |
|
for (i = 0; i < queuesiz; i++) { |
766 |
< |
if (fread(inbuf, sizeof(float), 4, precv) < 4) { |
767 |
< |
fprintf(stderr, "%s: read error in clearqueue\n", |
768 |
< |
progname); |
769 |
< |
exit(1); |
770 |
< |
} |
766 |
> |
viewray(orig, dir, &ourview, |
767 |
> |
(queue[i][0]+.5)/hresolu, |
768 |
> |
(queue[i][1]+.5)/vresolu); |
769 |
> |
*fbp++ = orig[0]; *fbp++ = orig[1]; *fbp++ = orig[2]; |
770 |
> |
*fbp++ = dir[0]; *fbp++ = dir[1]; *fbp++ = dir[2]; |
771 |
> |
} |
772 |
> |
/* mark end and get results */ |
773 |
> |
bzero((char *)fbp, 6*sizeof(float)); |
774 |
> |
if (process(PDesc, fbuf, fbuf, 4*sizeof(float)*queuesiz, |
775 |
> |
6*sizeof(float)*(queuesiz+1)) != |
776 |
> |
4*sizeof(float)*queuesiz) { |
777 |
> |
fprintf(stderr, "%s: error reading from rtrace process\n", |
778 |
> |
progname); |
779 |
> |
exit(1); |
780 |
> |
} |
781 |
> |
fbp = fbuf; |
782 |
> |
for (i = 0; i < queuesiz; i++) { |
783 |
|
if (ourexp > 0 && ourexp != 1.0) { |
784 |
< |
inbuf[0] *= ourexp; |
785 |
< |
inbuf[1] *= ourexp; |
786 |
< |
inbuf[2] *= ourexp; |
784 |
> |
fbp[0] *= ourexp; |
785 |
> |
fbp[1] *= ourexp; |
786 |
> |
fbp[2] *= ourexp; |
787 |
|
} |
788 |
|
setcolr(pscan(queue[i][1])[queue[i][0]], |
789 |
< |
inbuf[0], inbuf[1], inbuf[2]); |
790 |
< |
zscan(queue[i][1])[queue[i][0]] = inbuf[3]; |
789 |
> |
fbp[0], fbp[1], fbp[2]); |
790 |
> |
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
791 |
> |
fbp += 4; |
792 |
|
} |
793 |
|
queuesiz = 0; |
794 |
|
} |