1 | /**
|
---|
2 | * @author alteredq / http://alteredqualia.com/
|
---|
3 | * @author mrdoob / http://mrdoob.com/
|
---|
4 | */
|
---|
5 |
|
---|
6 | THREE.HemisphereLightHelper = function ( light, sphereSize, arrowLength, domeSize ) {
|
---|
7 |
|
---|
8 | THREE.Object3D.call( this );
|
---|
9 |
|
---|
10 | this.light = light;
|
---|
11 | this.light.updateMatrixWorld();
|
---|
12 |
|
---|
13 | this.matrixWorld = light.matrixWorld;
|
---|
14 | this.matrixAutoUpdate = false;
|
---|
15 |
|
---|
16 | this.colors = [ new THREE.Color(), new THREE.Color() ];
|
---|
17 |
|
---|
18 | var geometry = new THREE.SphereGeometry( sphereSize, 4, 2 );
|
---|
19 | geometry.applyMatrix( new THREE.Matrix4().makeRotationX( - Math.PI / 2 ) );
|
---|
20 |
|
---|
21 | for ( var i = 0, il = 8; i < il; i ++ ) {
|
---|
22 |
|
---|
23 | geometry.faces[ i ].color = this.colors[ i < 4 ? 0 : 1 ];
|
---|
24 |
|
---|
25 | }
|
---|
26 |
|
---|
27 | var material = new THREE.MeshBasicMaterial( { vertexColors: THREE.FaceColors, wireframe: true } );
|
---|
28 |
|
---|
29 | this.lightSphere = new THREE.Mesh( geometry, material );
|
---|
30 | this.add( this.lightSphere );
|
---|
31 |
|
---|
32 | this.update();
|
---|
33 |
|
---|
34 | };
|
---|
35 |
|
---|
36 | THREE.HemisphereLightHelper.prototype = Object.create( THREE.Object3D.prototype );
|
---|
37 |
|
---|
38 | THREE.HemisphereLightHelper.prototype.dispose = function () {
|
---|
39 | this.lightSphere.geometry.dispose();
|
---|
40 | this.lightSphere.material.dispose();
|
---|
41 | };
|
---|
42 |
|
---|
43 | THREE.HemisphereLightHelper.prototype.update = function () {
|
---|
44 |
|
---|
45 | var vector = new THREE.Vector3();
|
---|
46 |
|
---|
47 | return function () {
|
---|
48 |
|
---|
49 | this.colors[ 0 ].copy( this.light.color ).multiplyScalar( this.light.intensity );
|
---|
50 | this.colors[ 1 ].copy( this.light.groundColor ).multiplyScalar( this.light.intensity );
|
---|
51 |
|
---|
52 | this.lightSphere.lookAt( vector.setFromMatrixPosition( this.light.matrixWorld ).negate() );
|
---|
53 | this.lightSphere.geometry.colorsNeedUpdate = true;
|
---|
54 |
|
---|
55 | }
|
---|
56 |
|
---|
57 | }();
|
---|
58 |
|
---|