/* *
 * Vector plot series module
 *
 * (c) 2010-2019 Torstein Honsi
 *
 * License: www.highcharts.com/license
 */

'use strict';

import H from '../parts/Globals.js';

var seriesType = H.seriesType,
    pick = H.pick;

/**
 * The vector series class.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.vector
 *
 * @augments Highcharts.seriesTypes.scatter
 */
seriesType('vector', 'scatter'

    /**
     * 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.
     *
     * @sample {highcharts|highstock} highcharts/demo/vector-plot/
     *         Vector pot
     *
     * @since        6.0.0
     * @extends      plotOptions.scatter
     * @excluding    boostThreshold, marker, connectEnds, connectNulls,
     *               cropThreshold, dashStyle, gapSize, gapUnit, dataGrouping,
     *               linecap, shadow, stacking, step, jitter
     * @product      highcharts highstock
     * @optionparent plotOptions.vector
     */
    , {

        /**
         * 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: {

            /**
             * @default [{point.x}, {point.y}] Length: {point.length} Direction: {point.direction}°
             */
            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.
         *
         * @private
         * @function Highcharts.seriesTypes.vector#pointAttribs
         *
         * @param {Highcharts.Point} point
         *
         * @param {string} state
         *
         * @return {*}
         */
        pointAttribs: function (point, state) {
            var options = this.options,
                stroke = point.color || 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
            };
        },

        /**
         * @ignore
         * @deprecated
         * @function Highcharts.seriesTypes.vector#markerAttribs
         */
        markerAttribs: H.noop,

        /**
         * @ignore
         * @deprecated
         * @function Highcharts.seriesTypes.vector#getSymbol
         */
        getSymbol: H.noop,

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

            // 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;
        },

        /**
         * @private
         * @function Highcharts.seriesTypes.vector#translate
         */
        translate: function () {
            H.Series.prototype.translate.call(this);

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

        /**
         * @private
         * @function Highcharts.seriesTypes.vector#drawPoints
         */
        drawPoints: function () {

            var chart = this.chart;

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

                if (
                    this.options.clip === false ||
                    chart.isInsidePlot(plotX, plotY, chart.inverted)
                ) {

                    if (!point.graphic) {
                        point.graphic = this.chart.renderer
                            .path()
                            .add(this.markerGroup)
                            .addClass(
                                'highcharts-point ' +
                                'highcharts-color-' +
                                pick(point.colorIndex, point.series.colorIndex)
                            );
                    }
                    point.graphic
                        .attr({
                            d: this.arrow(point),
                            translateX: plotX,
                            translateY: plotY,
                            rotation: point.direction
                        });

                    if (!this.chart.styledMode) {
                        point.graphic
                            .attr(this.pointAttribs(point));
                    }

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

            }, this);
        },

        /**
         * @ignore
         * @deprecated
         * @function Highcharts.seriesTypes.vector#drawGraph
         */
        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 initializing series.
         *
         * @private
         * @function Highcharts.seriesTypes.vector#animate
         *
         * @param {boolean} [init]
         */
        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).
 *
 * @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
 *    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 following snippet shows only a
 *    few settings, see the complete options set 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
 *    }]
 *    ```
 *
 * @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
 *
 * @type      {Array<Array<(number|string),number,number,number>|*>}
 * @extends   series.line.data
 * @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
 */
