reference / alpha()
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 red()
green()
blue()
hue()
saturation()
brightness()
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