336 |
|
} |
337 |
|
return; |
338 |
|
fail: |
339 |
< |
quit("could not create raster image"); |
339 |
> |
quiterr("could not create raster image"); |
340 |
|
} |
341 |
|
|
342 |
|
|
445 |
|
XBell(thedisplay, 0); |
446 |
|
return(-1); |
447 |
|
} |
448 |
< |
viewray(rorg, rdir, &ourview, |
448 |
> |
if (viewray(rorg, rdir, &ourview, |
449 |
|
(ekey->x-xoff+.5)/xmax, |
450 |
< |
(ymax-1-ekey->y+yoff+.5)/ymax); |
450 |
> |
(ymax-1-ekey->y+yoff+.5)/ymax) < 0) |
451 |
> |
return(-1); |
452 |
|
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
453 |
|
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
454 |
|
fflush(stdout); |
604 |
|
register unsigned char *dp; |
605 |
|
register int x, err; |
606 |
|
int y; |
606 |
– |
rgbpixel *inl; |
607 |
|
short *cerr; |
608 |
|
|
609 |
< |
if ((inl = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL |
610 |
< |
|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
611 |
< |
quit("out of memory in getmono"); |
609 |
> |
if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
610 |
> |
quiterr("out of memory in getmono"); |
611 |
|
dp = ourdata - 1; |
612 |
|
for (y = 0; y < ymax; y++) { |
613 |
< |
picreadline3(y, inl); |
613 |
> |
if (getscan(y) < 0) |
614 |
> |
quiterr("seek error in getmono"); |
615 |
> |
normcolrs(scanline, xmax, scale); |
616 |
|
err = 0; |
617 |
|
for (x = 0; x < xmax; x++) { |
618 |
|
if (!(x&7)) |
619 |
|
*++dp = 0; |
620 |
< |
err += rgb_bright(&inl[x]) + cerr[x]; |
620 |
> |
err += normbright(scanline[x]) + cerr[x]; |
621 |
|
if (err > 127) |
622 |
|
err -= 255; |
623 |
|
else |
625 |
|
cerr[x] = err >>= 1; |
626 |
|
} |
627 |
|
} |
627 |
– |
free((char *)inl); |
628 |
|
free((char *)cerr); |
629 |
|
} |
630 |
|
|
632 |
|
getfull() /* get full (24-bit) data */ |
633 |
|
{ |
634 |
|
int y; |
635 |
< |
|
636 |
< |
for (y = 0; y < ymax; y++) |
637 |
< |
picreadline3(y, (rgbpixel *)(ourdata+y*xmax*3)); |
635 |
> |
register unsigned char *dp; |
636 |
> |
register int x; |
637 |
> |
/* set gamma correction */ |
638 |
> |
setcolrgam(gamcor); |
639 |
> |
/* read and convert file */ |
640 |
> |
dp = ourdata; |
641 |
> |
for (y = 0; y < ymax; y++) { |
642 |
> |
if (getscan(y) < 0) |
643 |
> |
quiterr("seek error in getfull"); |
644 |
> |
if (scale) |
645 |
> |
shiftcolrs(scanline, xmax, scale); |
646 |
> |
colrs_gambs(scanline, xmax); |
647 |
> |
for (x = 0; x < xmax; x++) { |
648 |
> |
*dp++ = scanline[x][RED]; |
649 |
> |
*dp++ = scanline[x][GRN]; |
650 |
> |
*dp++ = scanline[x][BLU]; |
651 |
> |
} |
652 |
> |
} |
653 |
|
} |
654 |
|
|
655 |
|
|
688 |
|
if (scanpos == NULL || scanpos[y] == -1) |
689 |
|
return(-1); |
690 |
|
if (fseek(fin, scanpos[y], 0) == -1) |
691 |
< |
quit("fseek error"); |
691 |
> |
quiterr("fseek error"); |
692 |
|
cury = y; |
693 |
|
} else if (scanpos != NULL) |
694 |
|
scanpos[y] = ftell(fin); |
734 |
|
register int i, val; |
735 |
|
|
736 |
|
for (i = 0; i < 256; i++) { |
737 |
< |
val = pow(i/256.0, 1.0/gamcor) * 256.0; |
737 |
> |
val = pow((i+0.5)/256.0, 1.0/gamcor) * 256.0; |
738 |
|
map[0][i] = map[1][i] = map[2][i] = val; |
739 |
|
} |
740 |
|
} |