Editing saturation - FilterMeisterWiki

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= saturation =

== Syntax ==
{{int saturation(int r, int g, int b, int z, int sat)}}

== Arguments ==
:'''r'''
::The Red pixel color value
:'''g'''
::The Green pixel color value
:'''b'''
::The Blue pixel color value
:'''z'''
::The pixel channel that will be returned by the function: 0 for red, 1 for green, 2 for blue.
:'''sat'''
::The amount of saturation to apply on a range of -500 to 500, with 0 meaning no saturation adjustment. Negative values desaturate the image.

== Return ==
The new pixel color channel value after the saturation effect is applied.

== Description ==
Applies a simple saturation effect to a given RGB pixel value.

== Example ==
<code>
ctl[0]: "Saturation", Range=(-500,500), Val=0

ForEveryTile: {
  int r, g, b;
  for (y = y_start; y < y_end; y++) {
    for (x = x_start; x < x_end; x++) {
       r = src(x,y,0);
       g = src(x,y,1);
       b = src(x,y,2);
       for (z=0; z < 3; z++) {
          pset(x,y,z, saturation(r, g, b, z, ctl(0)));
       }
    }
  }
  return true;
}
</code>

== See Also ==
((blend)), ((contrast)), ((gamma)), ((gray))

Summary of change:
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