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Improved SpotLightHelper #3470

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May 13, 2013
Merged

Improved SpotLightHelper #3470

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62 changes: 30 additions & 32 deletions src/extras/helpers/SpotLightHelper.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,54 +4,52 @@
* @author WestLangley / http://github.com/WestLangley
*/

THREE.SpotLightHelper = function ( light, sphereSize ) {
THREE.SpotLightHelper = function ( light ) {

THREE.Object3D.call( this );

this.matrixAutoUpdate = false;
// spotlight helper must be a child of the scene

this.light = light;

var geometry = new THREE.SphereGeometry( sphereSize, 4, 2 );
var material = new THREE.MeshBasicMaterial( { fog: false, wireframe: true } );
material.color.copy( this.light.color ).multiplyScalar( this.light.intensity );

this.lightSphere = new THREE.Mesh( geometry, material );
this.lightSphere.matrixWorld = this.light.matrixWorld;
this.lightSphere.matrixAutoUpdate = false;
this.add( this.lightSphere );
var geometry = new THREE.CylinderGeometry( 0, 1, 1, 8, 1, true );

geometry = new THREE.CylinderGeometry( 0.0001, 1, 1, 8, 1, true );
geometry.applyMatrix( new THREE.Matrix4().makeTranslation( 0, -0.5, 0 ) );

geometry.applyMatrix( new THREE.Matrix4().makeRotationX( - Math.PI / 2 ) );

material = new THREE.MeshBasicMaterial( { fog: false, wireframe: true, opacity: 0.3, transparent: true } );
material.color.copy( this.light.color ).multiplyScalar( this.light.intensity );
var material = new THREE.MeshBasicMaterial( { wireframe: true, opacity: 0.3, transparent: true } );

this.lightCone = new THREE.Mesh( geometry, material );
this.lightCone.position = this.light.position;
THREE.Mesh.call( this, geometry, material );

var coneLength = light.distance ? light.distance : 10000;
var coneWidth = coneLength * Math.tan( light.angle );
this.update();

this.lightCone.scale.set( coneWidth, coneWidth, coneLength );
this.lightCone.lookAt( this.light.target.position );
};

this.add( this.lightCone );
THREE.SpotLightHelper.prototype = Object.create( THREE.Mesh.prototype );

};
THREE.SpotLightHelper.prototype.update = ( function () {

THREE.SpotLightHelper.prototype = Object.create( THREE.Object3D.prototype );
var targetPosition = new THREE.Vector3();

THREE.SpotLightHelper.prototype.update = function () {
return function() {

var coneLength = this.light.distance ? this.light.distance : 10000;
var coneWidth = coneLength * Math.tan( this.light.angle );
var coneLength = this.light.distance ? this.light.distance : 10000;

this.lightCone.scale.set( coneWidth, coneWidth, coneLength );
this.lightCone.lookAt( this.light.target.position );
var coneWidth = coneLength * Math.tan( this.light.angle );

this.lightSphere.material.color.copy( this.light.color ).multiplyScalar( this.light.intensity );
this.lightCone.material.color.copy( this.light.color ).multiplyScalar( this.light.intensity );
this.scale.set( coneWidth, coneWidth, coneLength );

};
this.light.updateMatrixWorld( true );

this.position.getPositionFromMatrix( this.light.matrixWorld );

this.light.target.updateMatrixWorld( true );

targetPosition.getPositionFromMatrix( this.light.target.matrixWorld );

this.lookAt( targetPosition );

this.material.color.copy( this.light.color ).multiplyScalar( this.light.intensity );

}

}());