This example is for Processing 3+. If you have a previous version, use the examples included with your software. If you see any errors or have suggestions, please let us know.

Color Variables (Homage to Albers).

This example creates variables for colors that may be referred to in the program by a name, rather than a number.


size(640, 360);
noStroke();
background(51, 0, 0);

color inside = color(204, 102, 0);
color middle = color(204, 153, 0);
color outside = color(153, 51, 0);

// These statements are equivalent to the statements above.
// Programmers may use the format they prefer.
//color inside = #CC6600;
//color middle = #CC9900;
//color outside = #993300;

pushMatrix();
translate(80, 80);
fill(outside);
rect(0, 0, 200, 200);
fill(middle);
rect(40, 60, 120, 120);
fill(inside);
rect(60, 90, 80, 80);
popMatrix();

pushMatrix();
translate(360, 80);
fill(inside);
rect(0, 0, 200, 200);
fill(outside);
rect(40, 60, 120, 120);
fill(middle);
rect(60, 90, 80, 80);
popMatrix();