/**
 * GameLib.D3.Texture.Canvas
 * @param graphics
 * @param apiTextureCanvas
 * @constructor
 */
GameLib.D3.Texture.Canvas = function(
    graphics,
    apiTextureCanvas
) {
    this.graphics = graphics;
    this.graphics.isNotThreeThrow();

    if (GameLib.Utils.UndefinedOrNull(apiTextureCanvas)) {
        apiTextureCanvas = {
            textureType : GameLib.D3.API.Texture.TEXTURE_TYPE_CANVAS
        };
    }

    GameLib.D3.API.Texture.Canvas.call(
        this,
        apiTextureCanvas,
        apiTextureCanvas.canvas
    );

    if (this.canvas instanceof GameLib.API.Canvas) {
        this.canvas = new GameLib.Canvas(
            this.canvas
        );
    }

    GameLib.D3.Texture.call(
        this,
        this.graphics,
        this
    );

};

GameLib.D3.Texture.Canvas.prototype = Object.create(GameLib.D3.Texture.prototype);
GameLib.D3.Texture.Canvas.prototype.constructor = GameLib.D3.Texture.Canvas;

/**
 * Creates an instance of our texture object
 * @returns {*}
 */
GameLib.D3.Texture.Canvas.prototype.createInstance = function() {

    if (
        GameLib.Utils.UndefinedOrNull(this.canvas) ||
        GameLib.Utils.UndefinedOrNull(this.canvas.instance)
    ) {
        console.warn('canvas not ready at time of texture create instance');
        return;
    }

    this.canvas.parentTexture = this;

    this.instance = new THREE.Texture(
        this.canvas.instance
    );

    GameLib.D3.Texture.prototype.createInstance.call(this);
};

/**
 * Updates the instance with the current state
 */
GameLib.D3.Texture.Canvas.prototype.updateInstance = function(property) {

    if (property === 'canvas') {

        this.createInstance();

        return;
    }

    GameLib.D3.Texture.prototype.updateInstance.call(this, property);
};

/**
 * Converts a GameLib.D3.Texture.Canvas to a GameLib.D3.API.Texture.Canvas
 * @returns {GameLib.D3.API.Texture.Canvas}
 */
GameLib.D3.Texture.Canvas.prototype.toApiObject = function() {

    var apiTexture = GameLib.D3.Texture.prototype.toApiObject.call(this);

    var apiTextureCanvas = new GameLib.D3.API.Texture.Canvas(
        apiTexture,
        GameLib.Utils.IdOrNull(this.canvas)
    );

    return apiTextureCanvas;
};