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/* *
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*
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* License: www.highcharts.com/license
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*
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* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
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*
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* */
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'use strict';
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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import SeriesRegistry from '../../../Core/Series/SeriesRegistry.js';
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var EMAIndicator = SeriesRegistry.seriesTypes.ema;
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import U from '../../../Core/Utilities.js';
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var correctFloat = U.correctFloat, isArray = U.isArray, merge = U.merge;
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/* *
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*
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* Class
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*
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* */
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/**
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* The TEMA series type.
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*
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* @private
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* @class
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* @name Highcharts.seriesTypes.tema
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*
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* @augments Highcharts.Series
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*/
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var TEMAIndicator = /** @class */ (function (_super) {
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__extends(TEMAIndicator, _super);
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function TEMAIndicator() {
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/* *
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*
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* Static Properties
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*
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* */
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var _this = _super !== null && _super.apply(this, arguments) || this;
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/* *
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*
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* Properties
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*
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* */
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_this.EMApercent = void 0;
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_this.data = void 0;
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_this.options = void 0;
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_this.points = void 0;
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return _this;
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}
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/* *
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*
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* Functions
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*
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* */
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TEMAIndicator.prototype.getEMA = function (yVal, prevEMA, SMA, index, i, xVal) {
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return EMAIndicator.prototype.calculateEma(xVal || [], yVal, typeof i === 'undefined' ? 1 : i, this.EMApercent, prevEMA, typeof index === 'undefined' ? -1 : index, SMA);
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};
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TEMAIndicator.prototype.getTemaPoint = function (xVal, tripledPeriod, EMAlevels, i) {
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var TEMAPoint = [
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xVal[i - 3],
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correctFloat(3 * EMAlevels.level1 -
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3 * EMAlevels.level2 + EMAlevels.level3)
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];
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return TEMAPoint;
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};
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TEMAIndicator.prototype.getValues = function (series, params) {
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var period = params.period, doubledPeriod = 2 * period, tripledPeriod = 3 * period, xVal = series.xData, yVal = series.yData, yValLen = yVal ? yVal.length : 0, index = -1, accumulatePeriodPoints = 0, SMA = 0, TEMA = [], xDataTema = [], yDataTema = [],
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// EMA of previous point
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prevEMA, prevEMAlevel2,
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// EMA values array
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EMAvalues = [], EMAlevel2values = [], i, TEMAPoint,
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// This object contains all EMA EMAlevels calculated like below
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// EMA = level1
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// EMA(EMA) = level2,
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// EMA(EMA(EMA)) = level3,
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EMAlevels = {};
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this.EMApercent = (2 / (period + 1));
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// Check period, if bigger than EMA points length, skip
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if (yValLen < 3 * period - 2) {
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return;
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}
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// Switch index for OHLC / Candlestick / Arearange
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if (isArray(yVal[0])) {
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index = params.index ? params.index : 0;
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}
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// Accumulate first N-points
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accumulatePeriodPoints =
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EMAIndicator.prototype.accumulatePeriodPoints(period, index, yVal);
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// first point
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SMA = accumulatePeriodPoints / period;
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accumulatePeriodPoints = 0;
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// Calculate value one-by-one for each period in visible data
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for (i = period; i < yValLen + 3; i++) {
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if (i < yValLen + 1) {
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EMAlevels.level1 = this.getEMA(yVal, prevEMA, SMA, index, i)[1];
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EMAvalues.push(EMAlevels.level1);
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}
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prevEMA = EMAlevels.level1;
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// Summing first period points for ema(ema)
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if (i < doubledPeriod) {
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accumulatePeriodPoints += EMAlevels.level1;
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}
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else {
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// Calculate dema
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// First dema point
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if (i === doubledPeriod) {
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SMA = accumulatePeriodPoints / period;
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accumulatePeriodPoints = 0;
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}
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EMAlevels.level1 = EMAvalues[i - period - 1];
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EMAlevels.level2 = this.getEMA([EMAlevels.level1], prevEMAlevel2, SMA)[1];
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EMAlevel2values.push(EMAlevels.level2);
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prevEMAlevel2 = EMAlevels.level2;
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// Summing first period points for ema(ema(ema))
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if (i < tripledPeriod) {
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accumulatePeriodPoints += EMAlevels.level2;
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}
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else {
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// Calculate tema
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// First tema point
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if (i === tripledPeriod) {
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SMA = accumulatePeriodPoints / period;
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}
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if (i === yValLen + 1) {
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// Calculate the last ema and emaEMA points
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EMAlevels.level1 = EMAvalues[i - period - 1];
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EMAlevels.level2 = this.getEMA([EMAlevels.level1], prevEMAlevel2, SMA)[1];
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EMAlevel2values.push(EMAlevels.level2);
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}
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EMAlevels.level1 = EMAvalues[i - period - 2];
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EMAlevels.level2 = EMAlevel2values[i - 2 * period - 1];
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EMAlevels.level3 = this.getEMA([EMAlevels.level2], EMAlevels.prevLevel3, SMA)[1];
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TEMAPoint = this.getTemaPoint(xVal, tripledPeriod, EMAlevels, i);
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// Make sure that point exists (for TRIX oscillator)
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if (TEMAPoint) {
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TEMA.push(TEMAPoint);
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xDataTema.push(TEMAPoint[0]);
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yDataTema.push(TEMAPoint[1]);
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}
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EMAlevels.prevLevel3 = EMAlevels.level3;
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}
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}
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}
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return {
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values: TEMA,
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xData: xDataTema,
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yData: yDataTema
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};
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};
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/**
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* Triple exponential moving average (TEMA) indicator. This series requires
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* `linkedTo` option to be set and should be loaded after the
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* `stock/indicators/indicators.js`.
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*
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* @sample {highstock} stock/indicators/tema
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* TEMA indicator
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*
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* @extends plotOptions.ema
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* @since 7.0.0
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* @product highstock
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* @excluding allAreas, colorAxis, compare, compareBase, joinBy, keys,
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* navigatorOptions, pointInterval, pointIntervalUnit,
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* pointPlacement, pointRange, pointStart, showInNavigator,
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* stacking
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* @requires stock/indicators/indicators
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* @requires stock/indicators/tema
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* @optionparent plotOptions.tema
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*/
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TEMAIndicator.defaultOptions = merge(EMAIndicator.defaultOptions);
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return TEMAIndicator;
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}(EMAIndicator));
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SeriesRegistry.registerSeriesType('tema', TEMAIndicator);
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/* *
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*
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* Default Export
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*
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* */
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export default TEMAIndicator;
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/* *
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*
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* API Options
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*
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* */
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/**
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* A `TEMA` series. If the [type](#series.tema.type) option is not
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* specified, it is inherited from [chart.type](#chart.type).
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*
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* @extends series,plotOptions.tema
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* @since 7.0.0
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* @product highstock
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* @excluding allAreas, colorAxis, compare, compareBase, dataParser, dataURL,
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* joinBy, keys, navigatorOptions, pointInterval, pointIntervalUnit,
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* pointPlacement, pointRange, pointStart, showInNavigator, stacking
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* @requires stock/indicators/indicators
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* @requires stock/indicators/tema
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* @apioption series.tema
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*/
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''; // to include the above in the js output
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