I made a function to convert a color to cmyk in the rage of 0 to 100 (it returns a int array).
I also want to be able to convert it back to a color.

The problem is, how do i deal with hsb and the current range of that?

I looked a lot at http://code.google.com/p/processing/source/browse/trunk/processing/core/methods/demo/PGraphics.java

and there are a lot of color functions there but there out of my league.

Here is what i have so far ( i want to make it for a library, that's why i have the p.g. etc):

1. public int cmykToColor(float c, float m, float y, float k) {
2. // Converts CMYK to CMY C = ( C * ( 1 - K ) + K ) M = ( M * ( 1 - K ) +
3. // K ) Y = ( Y * ( 1 - K ) + K ) and converts CMY to RGB R = ( 1 - C ) G
4. // = ( 1 - M ) B = ( 1 - Y )
5. 
   
6. // c = c/100;
7. // m = m/100;
8. // y = y/100;
9. k = k / 100;
10. 
    
11. c = ((c / 100) * (1 - k) + k);
12. m = ((m / 100) * (1 - k) + k);
13. y = ((y / 100) * (1 - k) + k);
14. 
    
15. switch (p.g.colorMode) {
16. case PApplet.RGB:
17. 
    
18. float r = (1 - c) * p.g.colorModeX;
19. float g = (1 - m) * p.g.colorModeY;
20. float b = (1 - y) * p.g.colorModeZ;
21. 
    
22. return p.color(r, g, b);
23. }
24. // hsb?
25. return -1;
26. 
    
27. }