/* *
 *
 *  Variable Pie module for Highcharts
 *
 *  (c) 2010-2017 Grzegorz Blachliński
 *
 *  License: www.highcharts.com/license
 *
 *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
 *
 * */
'use strict';
import H from '../parts/Globals.js';
/**
 * @typedef {"area"|"radius"} Highcharts.VariablePieSizeByValue
 */
import U from '../parts/Utilities.js';
var arrayMax = U.arrayMax, arrayMin = U.arrayMin, pick = U.pick;
import '../parts/Options.js';
var fireEvent = H.fireEvent, seriesType = H.seriesType, pieProto = H.seriesTypes.pie.prototype;
/**
 * The variablepie series type.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.variablepie
 *
 * @augments Highcharts.Series
 */
seriesType('variablepie', 'pie', 
/**
 * A variable pie series is a two dimensional series type, where each point
 * renders an Y and Z value.  Each point is drawn as a pie slice where the
 * size (arc) of the slice relates to the Y value and the radius of pie
 * slice relates to the Z value.
 *
 * @sample {highcharts} highcharts/demo/variable-radius-pie/
 *         Variable-radius pie chart
 *
 * @extends      plotOptions.pie
 * @excluding    dragDrop
 * @since        6.0.0
 * @product      highcharts
 * @requires     modules/variable-pie.js
 * @optionparent plotOptions.variablepie
 */
{
    /**
     * The minimum size of the points' radius related to chart's `plotArea`.
     * If a number is set, it applies in pixels.
     *
     * @sample {highcharts} highcharts/variable-radius-pie/min-max-point-size/
     *         Example of minPointSize and maxPointSize
     * @sample {highcharts} highcharts/variable-radius-pie/min-point-size-100/
     *         minPointSize set to 100
     *
     * @type  {number|string}
     * @since 6.0.0
     */
    minPointSize: '10%',
    /**
     * The maximum size of the points' radius related to chart's `plotArea`.
     * If a number is set, it applies in pixels.
     *
     * @sample {highcharts} highcharts/variable-radius-pie/min-max-point-size/
     *         Example of minPointSize and maxPointSize
     *
     * @type  {number|string}
     * @since 6.0.0
     */
    maxPointSize: '100%',
    /**
     * The minimum possible z value for the point's radius calculation. If
     * the point's Z value is smaller than zMin, the slice will be drawn
     * according to the zMin value.
     *
     * @sample {highcharts} highcharts/variable-radius-pie/zmin-5/
     *         zMin set to 5, smaller z values are treated as 5
     * @sample {highcharts} highcharts/variable-radius-pie/zmin-zmax/
     *         Series limited by both zMin and zMax
     *
     * @type  {number}
     * @since 6.0.0
     */
    zMin: undefined,
    /**
     * The maximum possible z value for the point's radius calculation. If
     * the point's Z value is bigger than zMax, the slice will be drawn
     * according to the zMax value
     *
     * @sample {highcharts} highcharts/variable-radius-pie/zmin-zmax/
     *         Series limited by both zMin and zMax
     *
     * @type  {number}
     * @since 6.0.0
     */
    zMax: undefined,
    /**
     * Whether the pie slice's value should be represented by the area or
     * the radius of the slice. Can be either `area` or `radius`. The
     * default, `area`, corresponds best to the human perception of the size
     * of each pie slice.
     *
     * @sample {highcharts} highcharts/variable-radius-pie/sizeby/
     *         Difference between area and radius sizeBy
     *
     * @type  {Highcharts.VariablePieSizeByValue}
     * @since 6.0.0
     */
    sizeBy: 'area',
    tooltip: {
        pointFormat: '<span style="color:{point.color}">\u25CF</span> {series.name}<br/>Value: {point.y}<br/>Size: {point.z}<br/>'
    }
}, {
    pointArrayMap: ['y', 'z'],
    parallelArrays: ['x', 'y', 'z'],
    // It is needed to null series.center on chart redraw. Probably good
    // idea will be to add this option in directly in pie series.
    redraw: function () {
        this.center = null;
        pieProto.redraw.call(this, arguments);
    },
    // For arrayMin and arrayMax calculations array shouldn't have
    // null/undefined/string values. In this case it is needed to check if
    // points Z value is a Number.
    zValEval: function (zVal) {
        if (typeof zVal === 'number' && !isNaN(zVal)) {
            return true;
        }
        return null;
    },
    // Before standard translate method for pie chart it is needed to
    // calculate min/max radius of each pie slice based on its Z value.
    calculateExtremes: function () {
        var series = this, chart = series.chart, plotWidth = chart.plotWidth, plotHeight = chart.plotHeight, seriesOptions = series.options, slicingRoom = 2 * (seriesOptions.slicedOffset || 0), zMin, zMax, zData = series.zData, smallestSize = Math.min(plotWidth, plotHeight) - slicingRoom, 
        // Min and max size of pie slice:
        extremes = {}, 
        // In pie charts size of a pie is changed to make space for
        // dataLabels, then series.center is changing.
        positions = series.center || series.getCenter();
        ['minPointSize', 'maxPointSize'].forEach(function (prop) {
            var length = seriesOptions[prop], isPercent = /%$/.test(length);
            length = parseInt(length, 10);
            extremes[prop] = isPercent ?
                smallestSize * length / 100 :
                length * 2; // Because it should be radius, not diameter.
        });
        series.minPxSize = positions[3] + extremes.minPointSize;
        series.maxPxSize = Math.max(Math.min(positions[2], extremes.maxPointSize), positions[3] + extremes.minPointSize);
        if (zData.length) {
            zMin = pick(seriesOptions.zMin, arrayMin(zData.filter(series.zValEval)));
            zMax = pick(seriesOptions.zMax, arrayMax(zData.filter(series.zValEval)));
            this.getRadii(zMin, zMax, series.minPxSize, series.maxPxSize);
        }
    },
    /* eslint-disable valid-jsdoc */
    /**
     * Finding radius of series points based on their Z value and min/max Z
     * value for all series.
     *
     * @private
     * @function Highcharts.Series#getRadii
     *
     * @param {number} zMin
     *        Min threshold for Z value. If point's Z value is smaller that
     *        zMin, point will have the smallest possible radius.
     *
     * @param {number} zMax
     *        Max threshold for Z value. If point's Z value is bigger that
     *        zMax, point will have the biggest possible radius.
     *
     * @param {number} minSize
     *        Minimal pixel size possible for radius.
     *
     * @param {numbner} maxSize
     *        Minimal pixel size possible for radius.
     *
     * @return {void}
     */
    getRadii: function (zMin, zMax, minSize, maxSize) {
        var i = 0, pos, zData = this.zData, len = zData.length, radii = [], options = this.options, sizeByArea = options.sizeBy !== 'radius', zRange = zMax - zMin, value, radius;
        // Calculate radius for all pie slice's based on their Z values
        for (i; i < len; i++) {
            // if zData[i] is null/undefined/string we need to take zMin for
            // smallest radius.
            value = this.zValEval(zData[i]) ? zData[i] : zMin;
            if (value <= zMin) {
                radius = minSize / 2;
            }
            else if (value >= zMax) {
                radius = maxSize / 2;
            }
            else {
                // Relative size, a number between 0 and 1
                pos = zRange > 0 ? (value - zMin) / zRange : 0.5;
                if (sizeByArea) {
                    pos = Math.sqrt(pos);
                }
                radius = Math.ceil(minSize + pos * (maxSize - minSize)) / 2;
            }
            radii.push(radius);
        }
        this.radii = radii;
    },
    /* eslint-enable valid-jsdoc */
    // Extend translate by updating radius for each pie slice instead of
    // using one global radius.
    translate: function (positions) {
        this.generatePoints();
        var series = this, cumulative = 0, precision = 1000, // issue #172
        options = series.options, slicedOffset = options.slicedOffset, connectorOffset = slicedOffset + (options.borderWidth || 0), finalConnectorOffset, start, end, angle, startAngle = options.startAngle || 0, startAngleRad = Math.PI / 180 * (startAngle - 90), endAngleRad = Math.PI / 180 * (pick(options.endAngle, startAngle + 360) - 90), circ = endAngleRad - startAngleRad, // 2 * Math.PI,
        points = series.points, 
        // the x component of the radius vector for a given point
        radiusX, radiusY, labelDistance = options.dataLabels.distance, ignoreHiddenPoint = options.ignoreHiddenPoint, i, len = points.length, point, pointRadii, pointRadiusX, pointRadiusY;
        series.startAngleRad = startAngleRad;
        series.endAngleRad = endAngleRad;
        // Use calculateExtremes to get series.radii array.
        series.calculateExtremes();
        // Get positions - either an integer or a percentage string must be
        // given. If positions are passed as a parameter, we're in a
        // recursive loop for adjusting space for data labels.
        if (!positions) {
            series.center = positions = series.getCenter();
        }
        // Calculate the geometry for each point
        for (i = 0; i < len; i++) {
            point = points[i];
            pointRadii = series.radii[i];
            // Used for distance calculation for specific point.
            point.labelDistance = pick(point.options.dataLabels &&
                point.options.dataLabels.distance, labelDistance);
            // Saved for later dataLabels distance calculation.
            series.maxLabelDistance = Math.max(series.maxLabelDistance || 0, point.labelDistance);
            // set start and end angle
            start = startAngleRad + (cumulative * circ);
            if (!ignoreHiddenPoint || point.visible) {
                cumulative += point.percentage / 100;
            }
            end = startAngleRad + (cumulative * circ);
            // set the shape
            point.shapeType = 'arc';
            point.shapeArgs = {
                x: positions[0],
                y: positions[1],
                r: pointRadii,
                innerR: positions[3] / 2,
                start: Math.round(start * precision) / precision,
                end: Math.round(end * precision) / precision
            };
            // The angle must stay within -90 and 270 (#2645)
            angle = (end + start) / 2;
            if (angle > 1.5 * Math.PI) {
                angle -= 2 * Math.PI;
            }
            else if (angle < -Math.PI / 2) {
                angle += 2 * Math.PI;
            }
            // Center for the sliced out slice
            point.slicedTranslation = {
                translateX: Math.round(Math.cos(angle) * slicedOffset),
                translateY: Math.round(Math.sin(angle) * slicedOffset)
            };
            // set the anchor point for tooltips
            radiusX = Math.cos(angle) * positions[2] / 2;
            radiusY = Math.sin(angle) * positions[2] / 2;
            pointRadiusX = Math.cos(angle) * pointRadii;
            pointRadiusY = Math.sin(angle) * pointRadii;
            point.tooltipPos = [
                positions[0] + radiusX * 0.7,
                positions[1] + radiusY * 0.7
            ];
            point.half = angle < -Math.PI / 2 || angle > Math.PI / 2 ?
                1 :
                0;
            point.angle = angle;
            // Set the anchor point for data labels. Use point.labelDistance
            // instead of labelDistance // #1174
            // finalConnectorOffset - not override connectorOffset value.
            finalConnectorOffset = Math.min(connectorOffset, point.labelDistance / 5); // #1678
            point.labelPosition = {
                natural: {
                    // initial position of the data label - it's utilized
                    // for finding the final position for the label
                    x: positions[0] + pointRadiusX +
                        Math.cos(angle) * point.labelDistance,
                    y: positions[1] + pointRadiusY +
                        Math.sin(angle) * point.labelDistance
                },
                'final': {
                // used for generating connector path -
                // initialized later in drawDataLabels function
                // x: undefined,
                // y: undefined
                },
                // left - pie on the left side of the data label
                // right - pie on the right side of the data label
                alignment: point.half ? 'right' : 'left',
                connectorPosition: {
                    breakAt: {
                        x: positions[0] + pointRadiusX +
                            Math.cos(angle) * finalConnectorOffset,
                        y: positions[1] + pointRadiusY +
                            Math.sin(angle) * finalConnectorOffset
                    },
                    touchingSliceAt: {
                        x: positions[0] + pointRadiusX,
                        y: positions[1] + pointRadiusY
                    }
                }
            };
        }
        fireEvent(series, 'afterTranslate');
    }
});
/**
 * A `variablepie` series. If the [type](#series.variablepie.type) option is not
 * specified, it is inherited from [chart.type](#chart.type).
 *
 * @extends   series,plotOptions.variablepie
 * @excluding dataParser, dataURL, stack, xAxis, yAxis
 * @product   highcharts
 * @requires  modules/variable-pie.js
 * @apioption series.variablepie
 */
/**
 * An array of data points for the series. For the `variablepie` series type,
 * points can be given in the following ways:
 *
 * 1. An array of arrays with 2 values. In this case, the numerical values will
 *    be interpreted as `y, z` options. Example:
 *    ```js
 *    data: [
 *        [40, 75],
 *        [50, 50],
 *        [60, 40]
 *    ]
 *    ```
 *
 * 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.variablepie.turboThreshold), this option is not
 *    available.
 *    ```js
 *    data: [{
 *        y: 1,
 *        z: 4,
 *        name: "Point2",
 *        color: "#00FF00"
 *    }, {
 *        y: 7,
 *        z: 10,
 *        name: "Point1",
 *        color: "#FF00FF"
 *    }]
 *    ```
 *
 * @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>|*>}
 * @extends   series.pie.data
 * @excluding marker, x
 * @product   highcharts
 * @apioption series.variablepie.data
 */
''; // adds doclets above to transpiled file
