three.js/src/objects/Object3D.js

/**
 * @author mr.doob / http://mrdoob.com/
 */

THREE.Object3D = function (material) {

	this.position = new THREE.Vector3(0, 0, 0);
	this.rotation = new THREE.Vector3(0, 0, 0);
	this.scale = new THREE.Vector3(1, 1, 1);

	this.matrix = new THREE.Matrix4();
	this.screen = new THREE.Vector3(0, 0, 0);

	this.material = material instanceof Array ? material : [material];

	this.autoUpdateMatrix = true;

	this.updateMatrix = function () {

		this.matrix.identity();

		this.matrix.multiplySelf(THREE.Matrix4.translationMatrix(this.position.x, this.position.y, this.position.z));
		this.matrix.multiplySelf(THREE.Matrix4.rotationXMatrix(this.rotation.x));
		this.matrix.multiplySelf(THREE.Matrix4.rotationYMatrix(this.rotation.y));
		this.matrix.multiplySelf(THREE.Matrix4.rotationZMatrix(this.rotation.z));
		this.matrix.multiplySelf(THREE.Matrix4.scaleMatrix(this.scale.x, this.scale.y, this.scale.z));

	}
}