1 /**
2 * @author mikael emtinger / http://gomo.se/
3 * @author alteredq / http://alteredqualia.com/
4 */
5
6 /**@constructor*/
7 THREE.Bone = function( belongsToSkin ) {
8
9 THREE.Object3D.call( this );
10
11 this.skin = belongsToSkin;
12 this.skinMatrix = new THREE.Matrix4();
13
14 };
15
16 THREE.Bone.prototype = Object.create( THREE.Object3D.prototype );
17
18 THREE.Bone.prototype.update = function( parentSkinMatrix, forceUpdate ) {
19
20 // update local
21
22 if ( this.matrixAutoUpdate ) {
23
24 forceUpdate |= this.updateMatrix();
25
26 }
27
28 // update skin matrix
29
30 if ( forceUpdate || this.matrixWorldNeedsUpdate ) {
31
32 if( parentSkinMatrix ) {
33
34 this.skinMatrix.multiply( parentSkinMatrix, this.matrix );
35
36 } else {
37
38 this.skinMatrix.copy( this.matrix );
39
40 }
41
42 this.matrixWorldNeedsUpdate = false;
43 forceUpdate = true;
44
45 }
46
47 // update children
48
49 var child, i, l = this.children.length;
50
51 for ( i = 0; i < l; i ++ ) {
52
53 this.children[ i ].update( this.skinMatrix, forceUpdate );
54
55 }
56
57 };
58
59
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