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11 |
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#include "standard.h" |
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< |
#include <sys/fcntl.h> |
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> |
#include <fcntl.h> |
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#include "view.h" |
16 |
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|
17 |
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#include "color.h" |
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|
19 |
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#ifndef BSD |
20 |
+ |
#define vfork fork |
21 |
+ |
#endif |
22 |
+ |
|
23 |
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#define pscan(y) (ourpict+(y)*hresolu) |
24 |
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#define zscan(y) (ourzbuf+(y)*hresolu) |
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|
28 |
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|
29 |
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#define PACKSIZ 42 /* calculation packet size */ |
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|
31 |
< |
#define RTCOM "rtrace -h -ovl -fff -x %d %s" |
31 |
> |
#define RTCOM "rtrace -h -ovl -fff %s" |
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|
33 |
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#define ABS(x) ((x)>0?(x):-(x)) |
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|
46 |
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|
47 |
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char *progname; |
48 |
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|
49 |
< |
int fill = F_FORE|F_BACK; /* selected fill algorithm */ |
49 |
> |
int fillo = F_FORE|F_BACK; /* selected fill options */ |
50 |
> |
int fillsamp = 0; /* sample separation (0 == inf) */ |
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extern int backfill(), rcalfill(); /* fill functions */ |
52 |
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int (*deffill)() = backfill; /* selected fill function */ |
52 |
> |
int (*fillfunc)() = backfill; /* selected fill function */ |
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COLR backcolr = BLKCOLR; /* background color */ |
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double backz = 0.0; /* background z value */ |
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int normdist = 1; /* normalized distance? */ |
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switch (argv[i][2]) { |
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case '0': /* none */ |
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check(3,0); |
102 |
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fill = 0; |
102 |
> |
fillo = 0; |
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break; |
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case 'f': /* foreground */ |
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check(3,0); |
106 |
< |
fill = F_FORE; |
106 |
> |
fillo = F_FORE; |
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break; |
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case 'b': /* background */ |
109 |
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check(3,0); |
110 |
< |
fill = F_BACK; |
110 |
> |
fillo = F_BACK; |
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break; |
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case 'a': /* all */ |
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check(3,0); |
114 |
< |
fill = F_FORE|F_BACK; |
114 |
> |
fillo = F_FORE|F_BACK; |
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break; |
116 |
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case 's': /* sample */ |
117 |
+ |
check(3,1); |
118 |
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fillsamp = atoi(argv[++i]); |
119 |
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break; |
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case 'c': /* color */ |
121 |
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check(3,3); |
122 |
< |
deffill = backfill; |
122 |
> |
fillfunc = backfill; |
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setcolr(backcolr, atof(argv[i+1]), |
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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 */ |
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check(3,1); |
129 |
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deffill = backfill; |
129 |
> |
fillfunc = backfill; |
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backz = atof(argv[++i]); |
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break; |
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case 'r': /* rtrace */ |
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check(3,1); |
134 |
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deffill = rcalfill; |
134 |
> |
fillfunc = rcalfill; |
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calstart(RTCOM, argv[++i]); |
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break; |
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default: |
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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 */ |
196 |
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if (fill&F_BACK) |
197 |
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backpicture(); |
196 |
> |
if (fillo&F_BACK) |
197 |
> |
backpicture(fillfunc, fillsamp); |
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else |
199 |
< |
fillpicture(); |
199 |
> |
fillpicture(fillfunc); |
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/* close calculation */ |
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caldone(); |
202 |
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/* add to header */ |
203 |
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printargs(argc, argv, stdout); |
204 |
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if (gotvfile) { |
205 |
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printf(VIEWSTR); |
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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"); |
213 |
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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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static char *altname[] = {VIEWSTR,"rpict","rview","pinterp",NULL}; |
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register char **an; |
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printf("\t%s", s); |
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putc('\t', stdout); |
237 |
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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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fprintf(stderr, "%s: read error\n", pfile); |
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exit(1); |
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} |
311 |
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if (zfd != -1 && read(zfd,zin,thresolu*sizeof(float)) |
311 |
> |
if (zfd != -1 && read(zfd,(char *)zin,thresolu*sizeof(float)) |
312 |
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< thresolu*sizeof(float)) { |
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fprintf(stderr, "%s: read error\n", zspec); |
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exit(1); |
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register int x, y; /* final position */ |
426 |
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|
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/* compute vector p0p1 */ |
428 |
< |
if (fill&F_FORE && ABS(p1->z-p0->z) <= zt) { |
428 |
> |
if (fillo&F_FORE && ABS(p1->z-p0->z) <= zt) { |
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s1x = p1->x - p0->x; |
430 |
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s1y = p1->y - p0->y; |
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l1 = ABS(s1x); |
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p1isy = -1; |
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} |
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/* compute vector p0p2 */ |
439 |
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if (fill&F_FORE && ABS(p2->z-p0->z) <= zt) { |
439 |
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if (fillo&F_FORE && ABS(p2->z-p0->z) <= zt) { |
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s2x = p2->x - p0->x; |
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s2y = p2->y - p0->y; |
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if (p1isy == 1) |
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y1 = p0->y + c1*s1y/l1; |
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for (c2 = l2; c2-- > 0; ) { |
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x = x1 + c2*s2x/l2; |
457 |
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if (x < 0 || x >= hresolu) |
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continue; |
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y = y1 + c2*s2y/l2; |
460 |
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if (y < 0 || y >= vresolu) |
461 |
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continue; |
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if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
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> zeps*zscan(y)[x]) { |
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zscan(y)[x] = z; |
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} |
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backpicture() /* background fill algorithm */ |
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backpicture(fill, samp) /* background fill algorithm */ |
473 |
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int (*fill)(); |
474 |
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int samp; |
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{ |
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int *yback, xback; |
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int y; |
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xback = x-1; |
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} |
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/* |
525 |
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* Check to see if we have no background for |
526 |
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* this pixel. If not, use background color. |
525 |
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* If we have no background for this pixel, |
526 |
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* use the given fill function. |
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*/ |
528 |
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if (xback < 0 && yback[x] < 0) { |
529 |
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(*deffill)(x,y); |
514 |
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continue; |
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} |
528 |
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if (xback < 0 && yback[x] < 0) |
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goto fillit; |
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/* |
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* Compare, and use the background that is |
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* farther, unless one of them is next to us. |
533 |
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* If the background is too distant, call |
534 |
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* the fill function. |
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*/ |
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if ( yback[x] < 0 |
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|| (xback >= 0 && ABS(x-xback) <= 1) |
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|| ( ABS(y-yback[x]) > 1 |
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&& zscan(yback[x])[x] |
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< zscan(y)[xback] ) ) { |
541 |
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if (samp > 0 && ABS(x-xback) >= samp) |
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goto fillit; |
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copycolr(pscan(y)[x],pscan(y)[xback]); |
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zscan(y)[x] = zscan(y)[xback]; |
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} else { |
546 |
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if (samp > 0 && ABS(y-yback[x]) > samp) |
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goto fillit; |
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copycolr(pscan(y)[x],pscan(yback[x])[x]); |
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zscan(y)[x] = zscan(yback[x])[x]; |
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} |
551 |
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continue; |
552 |
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fillit: |
553 |
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(*fill)(x,y); |
554 |
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if (fill == rcalfill) { /* use it */ |
555 |
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clearqueue(); |
556 |
+ |
xback = x; |
557 |
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yback[x] = y; |
558 |
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} |
559 |
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} else { /* full pixel */ |
560 |
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yback[x] = -2; |
561 |
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xback = -2; |
565 |
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} |
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567 |
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568 |
< |
fillpicture() /* paint in empty pixels with default */ |
568 |
> |
fillpicture(fill) /* paint in empty pixels using fill */ |
569 |
> |
int (*fill)(); |
570 |
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{ |
571 |
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register int x, y; |
572 |
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|
573 |
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for (y = 0; y < vresolu; y++) |
574 |
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for (x = 0; x < hresolu; x++) |
575 |
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if (zscan(y)[x] <= 0) |
576 |
< |
(*deffill)(x,y); |
576 |
> |
(*fill)(x,y); |
577 |
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} |
578 |
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579 |
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617 |
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} |
618 |
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} else |
619 |
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zout = zscan(y); |
620 |
< |
if (write(fd, zout, hresolu*sizeof(float)) |
620 |
> |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
621 |
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< hresolu*sizeof(float)) { |
622 |
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perror(fname); |
623 |
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exit(1); |
660 |
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fprintf(stderr, "%s: too many calculations\n", progname); |
661 |
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exit(1); |
662 |
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} |
663 |
< |
sprintf(combuf, prog, PACKSIZ, args); |
663 |
> |
sprintf(combuf, prog, args); |
664 |
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if (pipe(p0) < 0 || pipe(p1) < 0) |
665 |
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syserror(); |
666 |
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if ((childpid = vfork()) == 0) { /* fork calculation */ |
696 |
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|
697 |
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if (childpid == -1) |
698 |
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return; |
670 |
– |
if (fclose(psend) == EOF) |
671 |
– |
syserror(); |
699 |
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clearqueue(); |
700 |
+ |
fclose(psend); |
701 |
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fclose(precv); |
702 |
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while ((pid = wait(0)) != -1 && pid != childpid) |
703 |
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; |
708 |
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rcalfill(x, y) /* fill with ray-calculated pixel */ |
709 |
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int x, y; |
710 |
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{ |
711 |
< |
FVECT orig, dir; |
684 |
< |
float outbuf[6]; |
685 |
< |
|
686 |
< |
if (queuesiz >= PACKSIZ) { /* flush queue */ |
687 |
< |
if (fflush(psend) == EOF) |
688 |
< |
syserror(); |
711 |
> |
if (queuesiz >= PACKSIZ) /* flush queue if needed */ |
712 |
|
clearqueue(); |
713 |
< |
} |
691 |
< |
/* send new ray */ |
692 |
< |
viewray(orig, dir, &ourview, (x+.5)/hresolu, (y+.5)/vresolu); |
693 |
< |
outbuf[0] = orig[0]; outbuf[1] = orig[1]; outbuf[2] = orig[2]; |
694 |
< |
outbuf[3] = dir[0]; outbuf[4] = dir[1]; outbuf[5] = dir[2]; |
695 |
< |
if (fwrite(outbuf, sizeof(float), 6, psend) < 6) |
696 |
< |
syserror(); |
697 |
< |
/* remember it */ |
713 |
> |
/* add position to queue */ |
714 |
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queue[queuesiz][0] = x; |
715 |
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queue[queuesiz][1] = y; |
716 |
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queuesiz++; |
717 |
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} |
718 |
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|
719 |
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|
720 |
< |
clearqueue() /* get results from queue */ |
720 |
> |
clearqueue() /* process queue */ |
721 |
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{ |
722 |
< |
float inbuf[4]; |
722 |
> |
FVECT orig, dir; |
723 |
> |
float fbuf[6]; |
724 |
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register int i; |
725 |
|
|
726 |
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for (i = 0; i < queuesiz; i++) { |
727 |
< |
if (fread(inbuf, sizeof(float), 4, precv) < 4) { |
727 |
> |
viewray(orig, dir, &ourview, |
728 |
> |
(queue[i][0]+.5)/hresolu, |
729 |
> |
(queue[i][1]+.5)/vresolu); |
730 |
> |
fbuf[0] = orig[0]; fbuf[1] = orig[1]; fbuf[2] = orig[2]; |
731 |
> |
fbuf[3] = dir[0]; fbuf[4] = dir[1]; fbuf[5] = dir[2]; |
732 |
> |
fwrite((char *)fbuf, sizeof(float), 6, psend); |
733 |
> |
} |
734 |
> |
/* flush output and get results */ |
735 |
> |
fbuf[3] = fbuf[4] = fbuf[5] = 0.0; /* mark */ |
736 |
> |
fwrite((char *)fbuf, sizeof(float), 6, psend); |
737 |
> |
if (fflush(psend) == EOF) |
738 |
> |
syserror(); |
739 |
> |
for (i = 0; i < queuesiz; i++) { |
740 |
> |
if (fread((char *)fbuf, sizeof(float), 4, precv) < 4) { |
741 |
|
fprintf(stderr, "%s: read error in clearqueue\n", |
742 |
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progname); |
743 |
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exit(1); |
744 |
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} |
745 |
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if (ourexp > 0 && ourexp != 1.0) { |
746 |
< |
inbuf[0] *= ourexp; |
747 |
< |
inbuf[1] *= ourexp; |
748 |
< |
inbuf[2] *= ourexp; |
746 |
> |
fbuf[0] *= ourexp; |
747 |
> |
fbuf[1] *= ourexp; |
748 |
> |
fbuf[2] *= ourexp; |
749 |
|
} |
750 |
|
setcolr(pscan(queue[i][1])[queue[i][0]], |
751 |
< |
inbuf[0], inbuf[1], inbuf[2]); |
752 |
< |
zscan(queue[i][1])[queue[i][0]] = inbuf[3]; |
751 |
> |
fbuf[0], fbuf[1], fbuf[2]); |
752 |
> |
zscan(queue[i][1])[queue[i][0]] = fbuf[3]; |
753 |
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} |
754 |
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queuesiz = 0; |
755 |
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} |