WebContent/highcharts4/js/highcharts-3d.src.js

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// ==ClosureCompiler==
// @compilation_level SIMPLE_OPTIMIZATIONS

/**
 * @license Highcharts JS v4.1.5 (2015-04-13)
 *
 * (c) 2009-2013 Torstein Hønsi
 *
 * License: www.highcharts.com/license
 */

// JSLint options:
/*global Highcharts, HighchartsAdapter, document, window, navigator, setInterval, clearInterval, clearTimeout, setTimeout, location, jQuery, $, console */

(function (Highcharts) {
	/**
	Shorthands for often used function
*/ 
/**
 *	Mathematical Functionility
 */
var PI = Math.PI,
	deg2rad = (PI / 180), // degrees to radians 
	sin = Math.sin,
	cos = Math.cos, 
	pick = Highcharts.pick,
	round = Math.round;

function perspective(points, chart, insidePlotArea) {
	var options3d = chart.options.chart.options3d,
		inverted = false,
		origin;

	if (insidePlotArea) {
		inverted = chart.inverted;
		origin = {
			x: chart.plotWidth / 2,
			y: chart.plotHeight / 2,
			z: options3d.depth / 2,
			vd: pick(options3d.depth, 1) * pick(options3d.viewDistance, 0)
		};
	} else {
		origin = {
			x: chart.plotLeft + (chart.plotWidth / 2),
			y: chart.plotTop + (chart.plotHeight / 2),
			z: options3d.depth / 2,
			vd: pick(options3d.depth, 1) * pick(options3d.viewDistance, 0)
		};
	}

	var result = [],
		xe = origin.x,
		ye = origin.y,
		ze = origin.z,
		vd = origin.vd,
		angle1 = deg2rad * (inverted ?  options3d.beta  : -options3d.beta),
		angle2 = deg2rad * (inverted ? -options3d.alpha :  options3d.alpha),
		s1 = sin(angle1),
		c1 = cos(angle1),
		s2 = sin(angle2),
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