Editing cmyk2rgb - FilterMeisterWiki

When saving, enter the following:

  _    _  ######  _________           _   _ 
 | |  | |  ##  ## \__   __/          | \ | |
 | |  | |  ##  ##    ) (     ####    |  \| |
 | |  | |  #####     | |      ##     | |\  |
 | |__| |  ## ##     | |      ##     |_| \_|
  \____/   ##  ##    | |      ##            
          #### ## ___) (___   ##            
                  \_______/  ####

Visit Preferences to set your user name

= cmyk2rgb =

== Syntax ==
{{int cmyk2rgb(int c, int m, int y, int k, int z)}}

== Arguments ==
:'''c'''
::Cyan value
:'''m'''
::Magenta value
:'''y'''
::Yellow value
:'''k'''
::Black value
:'''z'''
::Determines which value is returned. z=0 for R (Red), z=1 for G (Green), z=2 for B (Blue)

== Return ==
Returns the R, G or B value from 0 to 255 depending on the value of z

== Description ==
Lets you convert CMYK color values to RGB color values.

== Example ==
<code>
%ffp

ctl(0): "Adjust C", Range=(-255,255), val=0
ctl(1): "Adjust M", Range=(-255,255), val=0
ctl(2): "Adjust Y", Range=(-255,255), val=0
ctl(3): "Adjust K", Range=(-255,255), val=0

ForEveryTile:{

int r,g,b,cyan,mag,yel,k;

for (y= y_start; y < y_end; y++) {

if (updateProgress(y, y_end)) abort();

for (x = x_start; x < x_end; x++) {
				
      r = src(x,y,0);
      g = src(x,y,1);
      b = src(x,y,2);

cyan = rgb2cmyk(r,g,b,0);
      mag = rgb2cmyk(r,g,b,1); 
      yel = rgb2cmyk(r,g,b,2); 
      k = rgb2cmyk(r,g,b,3); 
			
      // Do the CMYK adjustment
      cyan = cyan + ctl(0);
      mag = mag + ctl(1);
      yel = yel + ctl(2);
      k = k + ctl(3);

pset( x, y, 0, cmyk2rgb(cyan,mag,yel,k,0) );
      pset( x, y, 1, cmyk2rgb(cyan,mag,yel,k,1) );
      pset( x, y, 2, cmyk2rgb(cyan,mag,yel,k,2) );
    }
  }

return true;
}
</code>

== See Also ==
((rgb2cmyk))

Summary of change:
Add document to category: