1 /**
  2  * @author alteredq / http://alteredqualia.com/
  3  *
  4  *	- shows point light color, intensity, position and distance
  5  */
  6 
  7 /**@constructor*/
  8 THREE.PointLightHelper = function ( light, sphereSize ) {
  9 
 10 	THREE.Object3D.call( this );
 11 
 12 	this.light = light;
 13 
 14 	// position
 15 
 16 	this.position = light.position;
 17 
 18 	// color
 19 
 20 	this.color = light.color.clone();
 21 
 22 	var intensity = THREE.Math.clamp( light.intensity, 0, 1 );
 23 
 24 	this.color.r *= intensity;
 25 	this.color.g *= intensity;
 26 	this.color.b *= intensity;
 27 
 28 	var hexColor = this.color.getHex();
 29 
 30 	// light helper
 31 
 32 	var bulbGeometry = new THREE.SphereGeometry( sphereSize, 16, 8 );
 33 	var raysGeometry = new THREE.AsteriskGeometry( sphereSize * 1.25, sphereSize * 2.25 );
 34 	var distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );
 35 
 36 	var bulbMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false } );
 37 	var raysMaterial = new THREE.LineBasicMaterial( { color: hexColor, fog: false } );
 38 	var distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );
 39 
 40 	this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
 41 	this.lightRays = new THREE.Line( raysGeometry, raysMaterial, THREE.LinePieces );
 42 	this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );
 43 
 44 	var d = light.distance;
 45 
 46 	if ( d === 0.0 ) {
 47 
 48 		this.lightDistance.visible = false;
 49 
 50 	} else {
 51 
 52 		this.lightDistance.scale.set( d, d, d );
 53 
 54 	}
 55 
 56 	this.add( this.lightSphere );
 57 	this.add( this.lightRays );
 58 	this.add( this.lightDistance );
 59 
 60 	//
 61 
 62 	this.lightSphere.properties.isGizmo = true;
 63 	this.lightSphere.properties.gizmoSubject = light;
 64 	this.lightSphere.properties.gizmoRoot = this;
 65 
 66 	//
 67 
 68 	this.properties.isGizmo = true;
 69 
 70 }
 71 
 72 THREE.PointLightHelper.prototype = Object.create( THREE.Object3D.prototype );
 73 
 74 THREE.PointLightHelper.prototype.update = function () {
 75 
 76 	// update sphere and rays colors to light color * light intensity
 77 
 78 	this.color.copy( this.light.color );
 79 
 80 	var intensity = THREE.Math.clamp( this.light.intensity, 0, 1 );
 81 	this.color.r *= intensity;
 82 	this.color.g *= intensity;
 83 	this.color.b *= intensity;
 84 
 85 	this.lightSphere.material.color.copy( this.color );
 86 	this.lightRays.material.color.copy( this.color );
 87 	this.lightDistance.material.color.copy( this.color );
 88 
 89 	//
 90 
 91 	var d = this.light.distance;
 92 
 93 	if ( d === 0.0 ) {
 94 
 95 		this.lightDistance.visible = false;
 96 
 97 	} else {
 98 
 99 		this.lightDistance.visible = true;
100 		this.lightDistance.scale.set( d, d, d );
101 
102 	}
103 
104 }
105 
106 

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