Converts RGB data to HSV data, or the other way around.
When converting to HSV, the resulting data is stored like this:
pixel.r = h; pixel.g = s; pixel.b = v;
When converting to RGB, the input data is asumed to be placed in
the pixels as above.
 |
 |
 |
| original |
->hsv_to_rgb(); |
->rgb_to_hsv(); |
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| tuned box (below) |
the rainbow (below) |
same, but rgb_to_hsv() |
HSV to RGB calculation:
in = input pixel
out = destination pixel
h=-pos*c_angle*3.1415/(float)NUM_SQUARES;
out.r=(in.b+in.g*cos(in.r));
out.g=(in.b+in.g*cos(in.r + pi*2/3));
out.b=(in.b+in.g*cos(in.r + pi*4/3));
RGB to HSV calculation: Hmm.
Example: Nice rainbow.
object i = Image.Image(200,200);
i = i->tuned_box(0,0, 200,200,
({ ({ 255,255,128 }), ({ 0,255,128 }),
({ 255,255,255 }), ({ 0,255,255 })}))
->hsv_to_rgb();
Image.Image()->read_lsb_rgb()