Reference for Processing (BETA) version 0135+. 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
example pic
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
Usage Web & Application
Related green()
red()
blue()
hue()
saturation()
brightness()
Updated on February 09, 2008 04:38:52pm PST

Creative Commons License