3D Game Programming for Kids, 2nd Edition

Bonus #1: Random Colors

Purple is a great color. But if you prefer more variety, it would be nice to randomly choose color. The problem is that the colors we’ve seen so far have been named colors, like blue.

​var​ shape = ​new​ THREE.SphereGeometry(50);
​var​ cover = ​new​ THREE.MeshBasicMaterial({color: ​'blue'​});
​var​ planet = ​new​ THREE.Mesh(shape, cover);
planet.position.​set​(-500,0,0);
scene.add(planet);

Named colors like blue, yellow, and purple are hard to randomize. Happily, you can make colors other ways in programming. One of the most common ways uses a number between 0 and 1 to specify how much red, green, and blue go into a color.

Here are some common colors in red, green, blue ...