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/* *
*
* (c) 2010-2021 Torstein Honsi
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
'use strict';
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
import SeriesRegistry from '../../Core/Series/SeriesRegistry.js';
var LineSeries = SeriesRegistry.seriesTypes.line;
import U from '../../Core/Utilities.js';
var merge = U.merge, pick = U.pick;
/* *
*
* Class
*
* */
/**
* Spline series type.
*
* @private
*/
var SplineSeries = /** @class */ (function (_super) {
__extends(SplineSeries, _super);
function SplineSeries() {
/* *
*
* Static Properties
*
* */
var _this = _super !== null && _super.apply(this, arguments) || this;
/* *
*
* Properties
*
* */
_this.data = void 0;
_this.options = void 0;
_this.points = void 0;
return _this;
/* eslint-enable valid-jsdoc */
}
/* *
*
* Functions
*
* */
/* eslint-disable valid-jsdoc */
/**
* Get the spline segment from a given point's previous neighbour to the
* given point.
*
* @private
* @function Highcharts.seriesTypes.spline#getPointSpline
*/
SplineSeries.prototype.getPointSpline = function (points, point, i) {
var
// 1 means control points midway between points, 2 means 1/3
// from the point, 3 is 1/4 etc
smoothing = 1.5, denom = smoothing + 1, plotX = point.plotX || 0, plotY = point.plotY || 0, lastPoint = points[i - 1], nextPoint = points[i + 1];
var leftContX, leftContY, rightContX, rightContY;
/**
* @private
*/
function doCurve(otherPoint) {
return otherPoint &&
!otherPoint.isNull &&
otherPoint.doCurve !== false &&
// #6387, area splines next to null:
!point.isCliff;
}
// Find control points
if (doCurve(lastPoint) && doCurve(nextPoint)) {
var lastX = lastPoint.plotX || 0, lastY = lastPoint.plotY || 0, nextX = nextPoint.plotX || 0, nextY = nextPoint.plotY || 0;
var correction = 0;
leftContX = (smoothing * plotX + lastX) / denom;
leftContY = (smoothing * plotY + lastY) / denom;
rightContX = (smoothing * plotX + nextX) / denom;
rightContY = (smoothing * plotY + nextY) / denom;
// Have the two control points make a straight line through main
// point
if (rightContX !== leftContX) { // #5016, division by zero
correction = (((rightContY - leftContY) *
(rightContX - plotX)) /
(rightContX - leftContX) + plotY - rightContY);
}
leftContY += correction;
rightContY += correction;
// to prevent false extremes, check that control points are
// between neighbouring points' y values
if (leftContY > lastY && leftContY > plotY) {
leftContY = Math.max(lastY, plotY);
// mirror of left control point
rightContY = 2 * plotY - leftContY;
}
else if (leftContY < lastY && leftContY < plotY) {
leftContY = Math.min(lastY, plotY);
rightContY = 2 * plotY - leftContY;
}
if (rightContY > nextY && rightContY > plotY) {
rightContY = Math.max(nextY, plotY);
leftContY = 2 * plotY - rightContY;
}
else if (rightContY < nextY && rightContY < plotY) {
rightContY = Math.min(nextY, plotY);
leftContY = 2 * plotY - rightContY;
}
// record for drawing in next point
point.rightContX = rightContX;
point.rightContY = rightContY;
}
// Visualize control points for debugging
/*
if (leftContX) {
this.chart.renderer.circle(
leftContX + this.chart.plotLeft,
leftContY + this.chart.plotTop,
2
)
.attr({
stroke: 'red',
'stroke-width': 2,
fill: 'none',
zIndex: 9
})
.add();
this.chart.renderer.path(['M', leftContX + this.chart.plotLeft,
leftContY + this.chart.plotTop,
'L', plotX + this.chart.plotLeft, plotY + this.chart.plotTop])
.attr({
stroke: 'red',
'stroke-width': 2,
zIndex: 9
})
.add();
}
if (rightContX) {
this.chart.renderer.circle(
rightContX + this.chart.plotLeft,
rightContY + this.chart.plotTop,
2
)
.attr({
stroke: 'green',
'stroke-width': 2,
fill: 'none',
zIndex: 9
})
.add();
this.chart.renderer.path(['M', rightContX + this.chart.plotLeft,
rightContY + this.chart.plotTop,
'L', plotX + this.chart.plotLeft, plotY + this.chart.plotTop])
.attr({
stroke: 'green',
'stroke-width': 2,
zIndex: 9
})
.add();
}
// */
var ret = [
'C',
pick(lastPoint.rightContX, lastPoint.plotX, 0),
pick(lastPoint.rightContY, lastPoint.plotY, 0),
pick(leftContX, plotX, 0),
pick(leftContY, plotY, 0),
plotX,
plotY
];
// reset for updating series later
lastPoint.rightContX = lastPoint.rightContY = void 0;
return ret;
};
/**
* A spline series is a special type of line series, where the segments
* between the data points are smoothed.
*
* @sample {highcharts} highcharts/demo/spline-irregular-time/
* Spline chart
* @sample {highstock} stock/demo/spline/
* Spline chart
*
* @extends plotOptions.series
* @excluding step, boostThreshold, boostBlending
* @product highcharts highstock
* @optionparent plotOptions.spline
*/
SplineSeries.defaultOptions = merge(LineSeries.defaultOptions);
return SplineSeries;
}(LineSeries));
SeriesRegistry.registerSeriesType('spline', SplineSeries);
/* *
*
* Default Export
*
* */
export default SplineSeries;
/* *
*
* API Options
*
* */
/**
* A `spline` series. If the [type](#series.spline.type) option is
* not specified, it is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.spline
* @excluding dataParser, dataURL, step, boostThreshold, boostBlending
* @product highcharts highstock
* @apioption series.spline
*/
/**
* An array of data points for the series. For the `spline` series type,
* points can be given in the following ways:
*
* 1. An array of numerical values. In this case, the numerical values will be
* interpreted as `y` options. The `x` values will be automatically
* calculated, either starting at 0 and incremented by 1, or from
* `pointStart` and `pointInterval` given in the series options. If the axis
* has categories, these will be used. Example:
* ```js
* data: [0, 5, 3, 5]
* ```
*
* 2. An array of arrays with 2 values. In this case, the values correspond to
* `x,y`. 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, 9],
* [1, 2],
* [2, 8]
* ]
* ```
*
* 3. 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.spline.turboThreshold),
* this option is not available.
* ```js
* data: [{
* x: 1,
* y: 9,
* name: "Point2",
* color: "#00FF00"
* }, {
* x: 1,
* y: 0,
* name: "Point1",
* color: "#FF00FF"
* }]
* ```
*
* @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
*
* @type {Array<number|Array<(number|string),(number|null)>|null|*>}
* @extends series.line.data
* @product highcharts highstock
* @apioption series.spline.data
*/
''; // adds doclets above intro transpilat
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