(function() {
'use strict';
/**
* RegularPolygon constructor. Examples include triangles, squares, pentagons, hexagons, etc.
* @constructor
* @memberof Konva
* @augments Konva.Shape
* @param {Object} config
* @param {Number} config.sides
* @param {Number} config.radius
* @@shapeParams
* @@nodeParams
* @example
* var hexagon = new Konva.RegularPolygon({
* x: 100,
* y: 200,
* sides: 6,
* radius: 70,
* fill: 'red',
* stroke: 'black',
* strokeWidth: 4
* });
*/
Konva.RegularPolygon = function(config) {
this.___init(config);
};
Konva.RegularPolygon.prototype = {
_centroid: true,
___init: function(config) {
// call super constructor
Konva.Shape.call(this, config);
this.className = 'RegularPolygon';
this.sceneFunc(this._sceneFunc);
},
_sceneFunc: function(context) {
var sides = this.attrs.sides,
radius = this.attrs.radius,
n, x, y;
context.beginPath();
context.moveTo(0, 0 - radius);
for(n = 1; n < sides; n++) {
x = radius * Math.sin(n * 2 * Math.PI / sides);
y = -1 * radius * Math.cos(n * 2 * Math.PI / sides);
context.lineTo(x, y);
}
context.closePath();
context.fillStrokeShape(this);
},
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.RegularPolygon, Konva.Shape);
// add getters setters
Konva.Factory.addGetterSetter(Konva.RegularPolygon, 'radius', 0);
/**
* set radius
* @name setRadius
* @method
* @memberof Konva.RegularPolygon.prototype
* @param {Number} radius
*/
/**
* get radius
* @name getRadius
* @method
* @memberof Konva.RegularPolygon.prototype
*/
Konva.Factory.addGetterSetter(Konva.RegularPolygon, 'sides', 0);
/**
* set number of sides
* @name setSides
* @method
* @memberof Konva.RegularPolygon.prototype
* @param {int} sides
*/
/**
* get number of sides
* @name getSides
* @method
* @memberof Konva.RegularPolygon.prototype
*/
Konva.Collection.mapMethods(Konva.RegularPolygon);
})();