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Index › Programming Questions & Help › Programs › pixel[] color values
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pixel[] color values (Read 590 times)
AndySE
pixel[] color values
Feb 7th, 2007, 7:37pm  
I am trying to use "pixel[]" to retrieve the color information for an image, and i cannot figure out values that it gives me.  it is too many digits sometimes to just be RGB or anything.  

here is my program code:


colorMode(HSB, 360, 100, 100);
PImage b;
b = loadImage("color.jpg");



 
image(b, 0, 0);
loadPixels();

for (int i = 0; i<width*height; i++) {
println(pixels[i]);
}

and here are some of the values that i get:

-85101
-214115
-14166
-143181
-733776
-1390420
-1652309
-1914967
-1981274
-1719895
-1655385
-3893372
-4157570
-3698814
-2384494
-3175292
-2584179
-2650740
-2848119


what does this mean?  

THANKS!
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movax
Re: pixel[] color values
Reply #1 - Feb 7th, 2007, 9:49pm  
The results you see are because the pixels[] array contains elements of type color, which println apparently doesnt know how to handle.  So this would work:

Code:

color f;

for(i=0;i<width*height;i++){
  f=pixels[i];
  println(red(f)+","+green(f)+","+blue(f));
}
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WWW FactoryKris  
fry
Re: pixel[] color values
Reply #2 - Feb 7th, 2007, 10:30pm  
even quicker than double posting is searching the forums! Wink
http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Syntax;action=display;num=1130980939

hex() is also useful for printing colors:
http://processing.org/reference/hex_.html
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