/**
 * @license  Highcharts JS v6.0.4 (2017-12-15)
 * Vector plot series module
 *
 * (c) 2010-2017 Torstein Honsi
 *
 * License: www.highcharts.com/license
 */
'use strict';
(function(factory) {
    if (typeof module === 'object' && module.exports) {
        module.exports = factory;
    } else {
        factory(Highcharts);
    }
}(function(Highcharts) {
    (function(H) {
        /**
         * Vector plot series module
         *
         * (c) 2010-2017 Torstein Honsi
         *
         * License: www.highcharts.com/license
         */


        var each = H.each,
            seriesType = H.seriesType;

        /**
         * A vector plot is a type of cartesian chart where each point has an X and Y
         * position, a length and a direction. Vectors are drawn as arrows.
         * 
         * @extends {plotOptions.scatter}
         * @excluding boostThreshold,marker,connectEnds,connectNulls,cropThreshold,
         *            dashStyle,gapSize,gapUnit,dataGrouping,linecap,shadow,stacking,
         *            step
         * @product highcharts highstock
         * @sample {highcharts|highstock} highcharts/demo/vector-plot/
         *         Vector pot
         * @since 6.0.0
         * @optionparent plotOptions.vector
         */
        seriesType('vector', 'scatter', {

            /**
             * The line width for each vector arrow.
             */
            lineWidth: 2,

            /** @ignore */
            marker: null,
            /**
             * What part of the vector it should be rotated around. Can be one of
             * `start`, `center` and `end`. When `start`, the vectors will start from
             * the given [x, y] position, and when `end` the vectors will end in the
             * [x, y] position.
             *
             * @sample  highcharts/plotoptions/vector-rotationorigin-start/
             *          Rotate from start
             * @validvalue ["start", "center", "end"]
             */
            rotationOrigin: 'center',
            states: {
                hover: {
                    /**
                     * Additonal line width for the vector errors when they are hovered.
                     */
                    lineWidthPlus: 1
                }
            },
            tooltip: {
                pointFormat: '<b>[{point.x}, {point.y}]</b><br/>Length: <b>{point.length}</b><br/>Direction: <b>{point.direction}\u00B0</b><br/>'
            },
            /**
             * Maximum length of the arrows in the vector plot. The individual arrow
             * length is computed between 0 and this value.
             */
            vectorLength: 20

        }, {
            pointArrayMap: ['y', 'length', 'direction'],
            parallelArrays: ['x', 'y', 'length', 'direction'],

            /**
             * Get presentational attributes.
             */
            pointAttribs: function(point, state) {
                var options = this.options,
                    stroke = this.color,
                    strokeWidth = this.options.lineWidth;

                if (state) {
                    stroke = options.states[state].color || stroke;
                    strokeWidth =
                        (options.states[state].lineWidth || strokeWidth) +
                        (options.states[state].lineWidthPlus || 0);
                }

                return {
                    'stroke': stroke,
                    'stroke-width': strokeWidth
                };
            },
            markerAttribs: H.noop,
            getSymbol: H.noop,

            /**
             * Create a single arrow. It is later rotated around the zero
             * centerpoint.
             */
            arrow: function(point) {
                var path,
                    fraction = point.length / this.lengthMax,
                    o = {
                        start: 10,
                        center: 0,
                        end: -10
                    }[this.options.rotationOrigin] || 0,
                    u = fraction * this.options.vectorLength / 20;

                // The stem and the arrow head. Draw the arrow first with rotation 0,
                // which is the arrow pointing down (vector from north to south).
                path = [
                    'M', 0, 7 * u + o, // base of arrow
                    'L', -1.5 * u, 7 * u + o,
                    0, 10 * u + o,
                    1.5 * u, 7 * u + o,
                    0, 7 * u + o,
                    0, -10 * u + o // top
                ];

                return path;
            },

            translate: function() {
                H.Series.prototype.translate.call(this);

                this.lengthMax = H.arrayMax(this.lengthData);
            },


            drawPoints: function() {

                var chart = this.chart;

                each(this.points, function(point) {
                    var plotX = point.plotX,
                        plotY = point.plotY;

                    if (chart.isInsidePlot(plotX, plotY, chart.inverted)) {

                        if (!point.graphic) {
                            point.graphic = this.chart.renderer
                                .path()
                                .add(this.markerGroup);
                        }
                        point.graphic
                            .attr({
                                d: this.arrow(point),
                                translateX: plotX,
                                translateY: plotY,
                                rotation: point.direction
                            })
                            .attr(this.pointAttribs(point));

                    } else if (point.graphic) {
                        point.graphic = point.graphic.destroy();
                    }

                }, this);
            },

            drawGraph: H.noop,

            /*
            drawLegendSymbol: function (legend, item) {
            	var options = legend.options,
            		symbolHeight = legend.symbolHeight,
            		square = options.squareSymbol,
            		symbolWidth = square ? symbolHeight : legend.symbolWidth,
            		path = this.arrow.call({
            			lengthMax: 1,
            			options: {
            				vectorLength: symbolWidth
            			}
            		}, {
            			length: 1
            		});

            	item.legendLine = this.chart.renderer.path(path)
            	.addClass('highcharts-point')
            	.attr({
            		zIndex: 3,
            		translateY: symbolWidth / 2,
            		rotation: 270,
            		'stroke-width': 1,
            		'stroke': 'black'
            	}).add(item.legendGroup);

            },
            */

            /**
             * Fade in the arrows on initiating series.
             */
            animate: function(init) {
                if (init) {
                    this.markerGroup.attr({
                        opacity: 0.01
                    });
                } else {
                    this.markerGroup.animate({
                        opacity: 1
                    }, H.animObject(this.options.animation));

                    this.animate = null;
                }
            }
        });


        /**
         * A `vector` series. If the [type](#series.vector.type) option is not
         * specified, it is inherited from [chart.type](#chart.type).
         * 
         * For options that apply to multiple series, it is recommended to add
         * them to the [plotOptions.series](#plotOptions.series) options structure.
         * To apply to all series of this specific type, apply it to [plotOptions.
         * vector](#plotOptions.vector).
         * 
         * @type {Object}
         * @extends series,plotOptions.vector
         * @excluding dataParser,dataURL
         * @product highcharts highstock
         * @apioption series.vector
         */

        /**
         * An array of data points for the series. For the `vector` series type,
         * points can be given in the following ways:
         * 
         * 1.  An array of arrays with 4 values. In this case, the values correspond
         * to `x,y,length,direction`. If the first value is a string, it is applied as
         * the name of the point, and the `x` value is inferred.
         * 
         *  ```js
         *     data: [
         *         [0, 0, 10, 90],
         *         [0, 1, 5, 180],
         *         [1, 1, 2, 270]
         *     ]
         *  ```
         * 
         * 2.  An array of objects with named values. The objects are point
         * configuration objects as seen below. If the total number of data
         * points exceeds the series' [turboThreshold](#series.area.turboThreshold),
         * this option is not available.
         * 
         *  ```js
         *     data: [{
         *         x: 0,
         *         y: 0,
         *         name: "Point2",
         *         length: 10,
         *         direction: 90
         *     }, {
         *         x: 1,
         *         y: 1,
         *         name: "Point1",
         *         direction: 270
         *     }]
         *  ```
         * 
         * @type {Array<Object|Array|Number>}
         * @extends series.line.data
         * @sample {highcharts} highcharts/chart/reflow-true/ Numerical values
         * @sample {highcharts} highcharts/series/data-array-of-arrays/ Arrays of numeric x and y
         * @sample {highcharts} highcharts/series/data-array-of-arrays-datetime/ Arrays of datetime x and y
         * @sample {highcharts} highcharts/series/data-array-of-name-value/ Arrays of point.name and y
         * @sample {highcharts} highcharts/series/data-array-of-objects/ Config objects
         * @product highcharts highstock
         * @apioption series.vector.data
         */

        /**
         * The length of the vector. The rendered length will relate to the
         * `vectorLength` setting.
         * 
         * @type {Number}
         * @product highcharts highstock
         * @apioption series.vector.data.length
         */

        /**
         * The vector direction in degrees, where 0 is north (pointing towards south).
         * 
         * @type {Number}
         * @product highcharts highstock
         * @apioption series.vector.data.direction
         */

    }(Highcharts));
}));
