Ticket/InsdepUI/plugin/Highcharts-5.0.0/js/highcharts-3d.src.js

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/**
 * @license Highcharts JS v5.0.0 (2016-09-29)
 *
 * 3D features for Highcharts JS
 *
 * @license: www.highcharts.com/license
 */
(function(factory) {
    if (typeof module === 'object' && module.exports) {
        module.exports = factory;
    } else {
        factory(Highcharts);
    }
}(function(Highcharts) {
    (function(H) {
        /**
         * (c) 2010-2016 Torstein Honsi
         *
         * License: www.highcharts.com/license
         */
        'use strict';
        /**
         *	Mathematical Functionility
         */
        var deg2rad = H.deg2rad,
            pick = H.pick;
        /**
         * Apply 3-D rotation
         * Euler Angles (XYZ): cosA = cos(Alfa|Roll), cosB = cos(Beta|Pitch), cosG = cos(Gamma|Yaw) 
         * 
         * Composite rotation:
         * |          cosB * cosG             |           cosB * sinG            |    -sinB    |
         * | sinA * sinB * cosG - cosA * sinG | sinA * sinB * sinG + cosA * cosG | sinA * cosB |
         * | cosA * sinB * cosG + sinA * sinG | cosA * sinB * sinG - sinA * cosG | cosA * cosB |
         * 
         * Now, Gamma/Yaw is not used (angle=0), so we assume cosG = 1 and sinG = 0, so we get:
         * |     cosB    |   0    |   - sinB    |
         * | sinA * sinB |  cosA  | sinA * cosB |
         * | cosA * sinB | - sinA | cosA * cosB |
         * 
         * But in browsers, y is reversed, so we get sinA => -sinA. The general result is:
         * |      cosB     |   0    |    - sinB     |     | x |     | px |
         * | - sinA * sinB |  cosA  | - sinA * cosB |  x  | y |  =  | py | 
         * |  cosA * sinB  |  sinA  |  cosA * cosB  |     | z |     | pz |
         */
        function rotate3D(x, y, z, angles) {
            return {
                x: angles.cosB * x - angles.sinB * z,
                y: -angles.sinA * angles.sinB * x + angles.cosA * y - angles.cosB * angles.sinA * z,
                z: angles.cosA * angles.sinB * x + angles.sinA * y + angles.cosA * angles.cosB * z
            };
        }

        function perspective3D(coordinate, origin, distance) {
            var projection = ((distance > 0) && (distance < Number.POSITIVE_INFINITY)) ? distance / (coordinate.z + origin.z + distance) : 1;
            return {
                x: coordinate.x * projection,
                y: coordinate.y * projection
            };
        }