(function() {
    'use strict';
    /**
     * Wedge constructor
     * @constructor
     * @augments Konva.Shape
     * @param {Object} config
     * @param {Number} config.angle in degrees
     * @param {Number} config.radius
     * @param {Boolean} [config.clockwise]
     * @@shapeParams
     * @@nodeParams
     * @example
     * // draw a wedge that's pointing downwards
     * var wedge = new Konva.Wedge({
     *   radius: 40,
     *   fill: 'red',
     *   stroke: 'black'
     *   strokeWidth: 5,
     *   angleDeg: 60,
     *   rotationDeg: -120
     * });
     */
    Konva.Wedge = function(config) {
        this.___init(config);
    };

    Konva.Wedge.prototype = {
        _centroid: true,
        ___init: function(config) {
            // call super constructor
            Konva.Shape.call(this, config);
            this.className = 'Wedge';
            this.sceneFunc(this._sceneFunc);
        },
        _sceneFunc: function(context) {
            context.beginPath();
            context.arc(0, 0, this.getRadius(), 0, Konva.getAngle(this.getAngle()), this.getClockwise());
            context.lineTo(0, 0);
            context.closePath();
            context.fillStrokeShape(this);
        },
        // implements Shape.prototype.getWidth()
        getWidth: function() {
            return this.getRadius() * 2;
        },
        // implements Shape.prototype.getHeight()
        getHeight: function() {
            return this.getRadius() * 2;
        },
        // implements Shape.prototype.setWidth()
        setWidth: function(width) {
            Konva.Node.prototype.setWidth.call(this, width);
            if (this.radius() !== width / 2) {
                this.setRadius(width / 2);
            }
        },
        // implements Shape.prototype.setHeight()
        setHeight: function(height) {
            Konva.Node.prototype.setHeight.call(this, height);
            if (this.radius() !== height / 2) {
                this.setRadius(height / 2);
            }
        }
    };
    Konva.Util.extend(Konva.Wedge, Konva.Shape);

    // add getters setters
    Konva.Factory.addGetterSetter(Konva.Wedge, 'radius', 0);

    /**
     * get/set radius
     * @name radius
     * @method
     * @memberof Konva.Wedge.prototype
     * @param {Number} radius
     * @returns {Number}
     * @example
     * // get radius
     * var radius = wedge.radius();
     *
     * // set radius
     * wedge.radius(10);
     */

    Konva.Factory.addGetterSetter(Konva.Wedge, 'angle', 0);

    /**
     * get/set angle in degrees
     * @name angle
     * @method
     * @memberof Konva.Wedge.prototype
     * @param {Number} angle
     * @returns {Number}
     * @example
     * // get angle
     * var angle = wedge.angle();
     *
     * // set angle
     * wedge.angle(20);
     */

    Konva.Factory.addGetterSetter(Konva.Wedge, 'clockwise', false);

    /**
     * get/set clockwise flag
     * @name clockwise
     * @method
     * @memberof Konva.Wedge.prototype
     * @param {Number} clockwise
     * @returns {Number}
     * @example
     * // get clockwise flag
     * var clockwise = wedge.clockwise();
     *
     * // draw wedge counter-clockwise
     * wedge.clockwise(false);
     *
     * // draw wedge clockwise
     * wedge.clockwise(true);
     */

    Konva.Factory.backCompat(Konva.Wedge, {
        angleDeg: 'angle',
        getAngleDeg: 'getAngle',
        setAngleDeg: 'setAngle'
    });

    Konva.Collection.mapMethods(Konva.Wedge);
})();