/**
 * GameLib.D3.API.Shadow
 * @param id
 * @param name
 * @param shadowType
 * @param camera
 * @param bias
 * @param mapSize
 * @param radius
 * @param parentEntity
 * @constructor
 */
GameLib.D3.API.Shadow = function(
    id,
    name,
    shadowType,
    camera,
    bias,
    mapSize,
    radius,
    parentEntity
) {
    if (GameLib.Utils.UndefinedOrNull(id)) {
        id = GameLib.Utils.RandomId();
    }
    this.id = id;

    if (GameLib.Utils.UndefinedOrNull(name)) {
        name = 'Shadow (' + id + ')';
    }
    this.name = name;
    
    if (GameLib.Utils.UndefinedOrNull(shadowType)) {
        shadowType = GameLib.D3.API.Shadow.SHADOW_TYPE_NORMAL;
    }
    this.shadowType = shadowType;

    if (GameLib.Utils.UndefinedOrNull(camera)) {
        camera = new GameLib.D3.API.Camera.Perspective(
            {
                aspect : 1
            },
            0.5,
            500,
            90
        );
    }
    this.camera = camera;

    if (GameLib.Utils.UndefinedOrNull(bias)) {
        bias = 0;//new GameLib.API.Number(0, 0.0001, -0.1, 0.1);
    }
    this.bias = bias;

    if (GameLib.Utils.UndefinedOrNull(mapSize)) {
        mapSize = new GameLib.API.Vector2(512, 512);
    }
    this.mapSize = mapSize;

    if (GameLib.Utils.UndefinedOrNull(radius)) {
        radius = 1;//new GameLib.API.Number(1, 0.01, 0, 5);
    }
    this.radius = radius;

    var componentType = null;
    
    switch (this.shadowType) {
        case GameLib.D3.API.Shadow.SHADOW_TYPE_NORMAL :
            componentType = GameLib.Component.SHADOW;
            break;
        case GameLib.D3.API.Shadow.SHADOW_TYPE_DIRECTIONAL :
            componentType = GameLib.Component.SHADOW_DIRECTIONAL;
            break;
		case GameLib.D3.API.Shadow.SHADOW_TYPE_SPOT :
		    componentType = GameLib.Component.SHADOW_SPOT;
		    break;
        default :
            console.error('could not determine shadow component type');
    }

    GameLib.API.Component.call(
        this,
        componentType,
        parentEntity
    );
};

GameLib.D3.API.Shadow.prototype = Object.create(GameLib.API.Component.prototype);
GameLib.D3.API.Shadow.prototype.constructor = GameLib.D3.API.Shadow;

/**
 * Shadow Types
 * @type {number}
 */
GameLib.D3.API.Shadow.SHADOW_TYPE_NORMAL        = 0x1;
GameLib.D3.API.Shadow.SHADOW_TYPE_DIRECTIONAL   = 0x2;
GameLib.D3.API.Shadow.SHADOW_TYPE_SPOT          = 0x3;