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  Reference for Processing (BETA) version 91+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.  
Name  

alpha()

   
Examples   
noStroke(); 
color c = color(0, 126, 255, 102); 
fill(c); 
rect(15, 15, 35, 70); 
float value = alpha(c);  //Sets "value" to "102" 
fill(value); 
rect(50, 15, 35, 70);
Description   Extracts the alpha value from a color.
   
Syntax   
alpha(color)
   
Parameters  
color   any value of the color datatype
   
Returns   float
   
Usage   Web & Application
   
Related   green()
red()
blue()
hue()
saturation()
brightness()
 
 






    
 
Updated: Fri Jul 15 16:35:29 PDT 2005
 
 
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  Processing is an open project initiated by Ben Fry and Casey Reas  
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