Random Color Palettes with colorLib

Posted by Jan Vantomme on 13 April 2011.
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I’ve just released colorLib v1.0 today. The new version has some bug fixes, better documentation and a new RandomPalette class. In this short tutorial, I’m going to show you how to use this class.

The first thing you need to do is to declare a RandomPalette object, right before the setup() function.

RandomPalette p

Inside the setup() function, you need to call the RandomPalette() constructor to actually create the object. There are two constructors available. The standard one creates a Palette with 5 random swatches, the second one lets you choose how many swatches you want.

// generate a Palette with 5 random colors
= new RandomPalette(this);
// generate a Palette with 7 random colors
= new RandomPalette(this7); 

Regenerate the Palette

If you are not happy with the random colors, there is a method to regenerate the Palette. You can call the randomSwatches() method and a new Palette will be generated.

p.randomSwatches(); 

Adding Colors

There are two methods to add extra random colors to the Palette: addRandomColor() adds one color to the end of the Palette, addRandomColors(int numSwatches) lets you decide how many colors you want to add.

// add one color to the end of the Palette
p.addRandomColor();
// add two colors to the end of the Palette
p.addRandomColors(2); 

Downloads

You can download the example for the RandomPalette right here from the blog. colorLib v1.0 is available from Google Code.

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