76 |
|
int parent = 0; /* number of children, -1 if child */ |
77 |
|
int sequential = 0; /* display images in sequence */ |
78 |
|
|
79 |
+ |
char *tout = "od"; /* output of 't' command */ |
80 |
+ |
|
81 |
|
VIEW ourview = STDVIEW; /* image view parameters */ |
82 |
|
int gotview = 0; /* got parameters from file */ |
83 |
|
|
143 |
|
for (i = 1; i < argc; i++) |
144 |
|
if (argv[i][0] == '-') |
145 |
|
switch (argv[i][1]) { |
146 |
< |
case 'c': |
146 |
> |
case 'c': /* number of colors */ |
147 |
|
maxcolors = atoi(argv[++i]); |
148 |
|
break; |
149 |
< |
case 'b': |
149 |
> |
case 'b': /* greyscale only */ |
150 |
|
greyscale = !greyscale; |
151 |
|
break; |
152 |
< |
case 'm': |
152 |
> |
case 'm': /* monochrome */ |
153 |
|
greyscale = 1; |
154 |
|
maxcolors = 2; |
155 |
|
break; |
156 |
< |
case 'd': |
156 |
> |
case 'd': /* display or dither */ |
157 |
|
if (argv[i][2] == 'i') |
158 |
|
dispname = argv[++i]; |
159 |
|
else |
160 |
|
dither = !dither; |
161 |
|
break; |
162 |
< |
case 'f': |
162 |
> |
case 'f': /* save pixmap */ |
163 |
|
fast = !fast; |
164 |
|
break; |
165 |
< |
case 's': |
165 |
> |
case 's': /* one at a time */ |
166 |
|
sequential = !sequential; |
167 |
|
break; |
168 |
< |
case 'e': |
168 |
> |
case 'o': /* 't' output */ |
169 |
> |
tout = argv[i]+2; |
170 |
> |
break; |
171 |
> |
case 'e': /* exposure comp. */ |
172 |
|
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
173 |
|
goto userr; |
174 |
|
scale = atoi(argv[++i]); |
175 |
|
break; |
176 |
< |
case 'g': |
176 |
> |
case 'g': /* gamma comp. */ |
177 |
|
if (argv[i][2] == 'e') |
178 |
|
geometry = argv[++i]; |
179 |
|
else |
600 |
|
} |
601 |
|
|
602 |
|
|
603 |
< |
traceray(xpos, ypos) /* print ray corresponding to pixel */ |
603 |
> |
traceray(xpos, ypos) /* print requested pixel data */ |
604 |
|
int xpos, ypos; |
605 |
|
{ |
606 |
+ |
extern char *index(); |
607 |
|
FLOAT hv[2]; |
608 |
|
FVECT rorg, rdir; |
609 |
+ |
COLOR cval; |
610 |
+ |
register char *cp; |
611 |
|
|
612 |
< |
if (!gotview) { /* no view, no can do */ |
613 |
< |
XBell(thedisplay, 0); |
614 |
< |
return(-1); |
615 |
< |
} |
612 |
> |
box.xmin = xpos; box.xsiz = 1; |
613 |
> |
box.ymin = ypos; box.ysiz = 1; |
614 |
> |
avgbox(cval); |
615 |
> |
scalecolor(cval, 1./exposure); |
616 |
|
pix2loc(hv, &inpres, xpos-xoff, ypos-yoff); |
617 |
< |
if (viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
618 |
< |
return(-1); |
619 |
< |
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
620 |
< |
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
617 |
> |
if (!gotview || viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
618 |
> |
rorg[0] = rorg[1] = rorg[2] = |
619 |
> |
rdir[0] = rdir[1] = rdir[2] = 0.; |
620 |
> |
|
621 |
> |
for (cp = tout; *cp; cp++) /* print what they asked for */ |
622 |
> |
switch (*cp) { |
623 |
> |
case 'o': /* origin */ |
624 |
> |
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
625 |
> |
break; |
626 |
> |
case 'd': /* direction */ |
627 |
> |
printf("%e %e %e ", rdir[0], rdir[1], rdir[2]); |
628 |
> |
break; |
629 |
> |
case 'v': /* radiance value */ |
630 |
> |
printf("%e %e %e ", colval(cval,RED), |
631 |
> |
colval(cval,GRN), colval(cval,BLU)); |
632 |
> |
break; |
633 |
> |
case 'l': /* luminance */ |
634 |
> |
printf("%e ", luminance(cval)); |
635 |
> |
break; |
636 |
> |
case 'p': /* pixel position */ |
637 |
> |
printf("%d %d ", (int)(hv[0]*inpres.xr), |
638 |
> |
(int)(hv[1]*inpres.yr)); |
639 |
> |
break; |
640 |
> |
} |
641 |
> |
putchar('\n'); |
642 |
|
fflush(stdout); |
643 |
|
return(0); |
644 |
|
} |