Method Image.Image()->rgb_to_hsv()

Method rgb_to_hsv
Method hsv_to_rgb

object rgb_to_hsv()
object hsv_to_rgb()

Description

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();
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();
 

Returns

the new image object