source: other-projects/playing-in-the-street/summer-2013/trunk/Playing-in-the-Street-WPF/Content/Web/mrdoob-three.js-4862f5f/src/lights/SpotLight.js@ 28897

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.SpotLight = function ( hex, intensity, distance, angle, exponent ) {

    THREE.Light.call( this, hex );

    this.position.set( 0, 1, 0 );
    this.target = new THREE.Object3D();

    this.intensity = ( intensity !== undefined ) ? intensity : 1;
    this.distance = ( distance !== undefined ) ? distance : 0;
    this.angle = ( angle !== undefined ) ? angle : Math.PI / 3;
    this.exponent = ( exponent !== undefined ) ? exponent : 10;

    this.castShadow = false;
    this.onlyShadow = false;

    //

    this.shadowCameraNear = 50;
    this.shadowCameraFar = 5000;
    this.shadowCameraFov = 50;

    this.shadowCameraVisible = false;

    this.shadowBias = 0;
    this.shadowDarkness = 0.5;

    this.shadowMapWidth = 512;
    this.shadowMapHeight = 512;

    //

    this.shadowMap = null;
    this.shadowMapSize = null;
    this.shadowCamera = null;
    this.shadowMatrix = null;

};

THREE.SpotLight.prototype = Object.create( THREE.Light.prototype );

THREE.SpotLight.prototype.clone = function () {

    var light = new THREE.SpotLight();

    THREE.Light.prototype.clone.call( this, light );

    light.target = this.target.clone();

    light.intensity = this.intensity;
    light.distance = this.distance;
    light.angle = this.angle;
    light.exponent = this.exponent;

    light.castShadow = this.castShadow;
    light.onlyShadow = this.onlyShadow;

    return light;

};