radialgradient.js-e

## Copyright (c) 2015, Empirical Modelling Group
## All rights reserved.
##
## See LICENSE.txt

##Example:

/*
 * Creates a radial gradient that can be used to colour shapes
 * 
 * @param x
 * @param y
 * @param [r radius
 * @param [colourStops]] List of colourStops
 * 
 * ```
 * g is RadialGradient(300, 240, 230, [[0, "red"], [0.5, "orange"], [1, "cyan"]]);
 * c is Circle(300,240,230,g);
 * picture is [c];
 * ```
 */
	
func RadialGradient {
	${{
		var x1, y1, r1, x2, y2, r2, colourStops;
		x1 = arguments[0];
		y1 = arguments[1];
		
		switch (arguments.length) {
			case 4:
				r1 = 0;
				x2 = x1;
				y2 = y1;
				r2 = arguments[2];
				colourStops = arguments[3];
				break;
		}
		return new RadialGradient(x1, y1, r1, x2, y2, r2, colourStops);
	}}$;
}

${{
	RadialGradient = function(x1, y1, r1, x2, y2, r2, colourStops) {
		this.x1 = x1;
		this.y1 = y1;
		this.r1 = r1;
		this.x2 = x2;
		this.y2 = y2;
		this.r2 = r2;
		this.colourStops = colourStops;
	}
	
	RadialGradient.prototype = new EdenUI.plugins.Canvas2D.FillStyle();

	RadialGradient.prototype.getColour = function (context) {
		var gradient = context.createRadialGradient(this.x1, this.y1, this.r1, this.x2, this.y2, this.r2);
		var colourStop;
		for (var i = 0; i < this.colourStops.length; i++) {
			colourStop = this.colourStops[i];
			gradient.addColorStop(colourStop[0], colourStop[1]);
		}
		return gradient;
	};

	RadialGradient.prototype.toString = function() {
		return "RadialGradient(" + Eden.edenCodeForValues(this.x1, this.y1, this.r1, this.x2, this.y2, this.r2, this.colourStops) + ")";
		
	};

	RadialGradient.prototype.getEdenCode = RadialGradient.prototype.toString;

}}$;