juliendehos

// In three.js, many functions have optional parameters.
// For example, the color constructor can take 0, 1, 2 or 3 parameters:

const c1 = new THREE.Color(0xff00ff);
const c2 = new THREE.Color();
const c3 = new THREE.Color(1,0,0);
const c4 = new THREE.Color('blue');
const c5 = new THREE.Color(new THREE.Color('green'));

// Here, the function is a bit complicated because the first parameter can have different types.

juliendehos

// in three.js, there are various ways to define a color:

// using an int
const light1 = new THREE.AmbientLight(0xff0000);

// using a predefined color (string)
const light2 = new THREE.AmbientLight("green");

// using a rgb triplet
const light3 = new THREE.AmbientLight(new THREE.Color(0,0,1));