scichart
Version:
Fast WebGL JavaScript Charting Library and Framework
119 lines (118 loc) • 7.12 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BaseHitTestProvider = void 0;
var Guard_1 = require("../../../../Core/Guard");
var Point_1 = require("../../../../Core/Point");
var translate_1 = require("../../../../utils/translate");
var hitTestHelpers_1 = require("./hitTestHelpers");
var HitTestInfo_1 = require("./HitTestInfo");
/**
* Defines the base class to Hit-Test Providers: classes which performs hit-tests on series, returning data-values at X-Y mouse locations
*/
var BaseHitTestProvider = /** @class */ (function () {
/**
* Creates an instance of the {@link BaseHitTestProvider}
* @param parentSeries the parent {@link IRenderableSeries | RenderableSeries} that this Hit-Test provider is attached to
* @param wasmContext the {@link TSciChart | SciChart WebAssembly Context} containing
* native methods and access to our WebGL2 WebAssembly Drawing Engine
*/
function BaseHitTestProvider(parentSeries, wasmContext) {
Guard_1.Guard.notNull(parentSeries, "parentSeries");
this.parentSeries = parentSeries;
this.webAssemblyContext = wasmContext;
}
/**
* @inheritDoc
*/
BaseHitTestProvider.prototype.update = function (renderPassData) {
this.currentRenderPassData = renderPassData;
};
/**
* @inheritDoc
*/
BaseHitTestProvider.prototype.hitTestDataPoint = function (x, y, hitTestRadius) {
if (hitTestRadius === void 0) { hitTestRadius = BaseHitTestProvider.DEFAULT_HIT_TEST_RADIUS; }
var hitTestPoint = this.getTranslatedHitTestPoint(x, y);
if (!hitTestPoint) {
return HitTestInfo_1.HitTestInfo.empty();
}
var _a = this.currentRenderPassData, xCoordinateCalculator = _a.xCoordinateCalculator, yCoordinateCalculator = _a.yCoordinateCalculator, isVerticalChart = _a.isVerticalChart;
var xHitCoord = isVerticalChart ? hitTestPoint.y : hitTestPoint.x;
var yHitCoord = isVerticalChart ? hitTestPoint.x : hitTestPoint.y;
var dataSeries = this.parentSeries.dataSeries;
if (!dataSeries) {
return HitTestInfo_1.HitTestInfo.empty();
}
var nearest = hitTestHelpers_1.hitTestHelpers.getNearestXyPoint(this.webAssemblyContext, xCoordinateCalculator, yCoordinateCalculator, dataSeries, xHitCoord, yHitCoord, hitTestRadius);
var xNativeValues = dataSeries.getNativeXValues();
var yNativeValues = dataSeries.getNativeYValues();
var hitTestInfo = hitTestHelpers_1.hitTestHelpers.createHitTestInfo(this.parentSeries, xCoordinateCalculator, yCoordinateCalculator, isVerticalChart, dataSeries, xNativeValues, yNativeValues, xHitCoord, yHitCoord, nearest.nearestPointIndex, hitTestRadius, nearest.distance);
if (nearest.nearestPointIndex >= 0) {
hitTestInfo.isHit = hitTestHelpers_1.hitTestHelpers.testIsHitForPoint(xCoordinateCalculator, yCoordinateCalculator, xNativeValues, yNativeValues, nearest.nearestPointIndex, xHitCoord, yHitCoord, hitTestRadius, dataSeries);
}
else {
hitTestInfo.isHit = false;
}
return hitTestInfo;
};
/**
* @inheritDoc
*/
BaseHitTestProvider.prototype.hitTestForDataPointSelectionModifier = function (x, y, hitTestRadius) {
if (hitTestRadius === void 0) { hitTestRadius = BaseHitTestProvider.DEFAULT_HIT_TEST_RADIUS; }
return this.hitTestDataPoint(x, y, hitTestRadius);
};
/**
* @inheritDoc
*/
BaseHitTestProvider.prototype.hitTestXSlice = function (x, y) {
var hitTestPoint = this.getTranslatedHitTestPoint(x, y);
if (!hitTestPoint) {
return HitTestInfo_1.HitTestInfo.empty();
}
var _a = this.currentRenderPassData, xCoordinateCalculator = _a.xCoordinateCalculator, yCoordinateCalculator = _a.yCoordinateCalculator, isVerticalChart = _a.isVerticalChart;
var xHitCoord = isVerticalChart ? hitTestPoint.y : hitTestPoint.x;
var yHitCoord = isVerticalChart ? hitTestPoint.x : hitTestPoint.y;
var dataSeries = this.parentSeries.dataSeries;
if (!dataSeries) {
return HitTestInfo_1.HitTestInfo.empty();
}
var nearestPointIndex = hitTestHelpers_1.hitTestHelpers.getNearestXPoint(this.webAssemblyContext, xCoordinateCalculator, dataSeries, xHitCoord, dataSeries.dataDistributionCalculator.isSortedAscending);
var xNativeValues = dataSeries.getNativeXValues();
var yNativeValues = dataSeries.getNativeYValues();
var hitTestInfo = hitTestHelpers_1.hitTestHelpers.createHitTestInfo(this.parentSeries, xCoordinateCalculator, yCoordinateCalculator, isVerticalChart, dataSeries, xNativeValues, yNativeValues, xHitCoord, yHitCoord, nearestPointIndex, 0, undefined);
hitTestInfo.isHit = hitTestInfo.isWithinDataBounds;
if (dataSeries.dataDistributionCalculator.isSortedAscending && nearestPointIndex >= 0) {
var dataSeriesCount = xNativeValues.size();
var nearestXCoord = xCoordinateCalculator.getCoordinate(xCoordinateCalculator.isCategoryCoordinateCalculator
? nearestPointIndex
: xNativeValues.get(nearestPointIndex));
if (!(nearestPointIndex === dataSeriesCount - 1 &&
(xCoordinateCalculator.hasFlippedCoordinates
? xHitCoord >= nearestXCoord
: xHitCoord <= nearestXCoord)) &&
!(nearestPointIndex === 0 &&
(xCoordinateCalculator.hasFlippedCoordinates
? xHitCoord <= nearestXCoord
: xHitCoord >= nearestXCoord))) {
var hitRes = hitTestHelpers_1.hitTestHelpers.testIsHitForLine(xCoordinateCalculator, yCoordinateCalculator, xNativeValues, yNativeValues, nearestPointIndex, xHitCoord, yHitCoord, 0, dataSeries);
hitTestInfo.point2dataSeriesIndex = hitRes.secondPointIndex;
hitTestInfo.point2xValue = xNativeValues.get(hitRes.secondPointIndex);
hitTestInfo.point2xCoord = xCoordinateCalculator.getCoordinate(hitTestInfo.point2xValue);
hitTestInfo.point2yValue = yNativeValues.get(hitRes.secondPointIndex);
hitTestInfo.point2yCoord = yCoordinateCalculator.getCoordinate(hitTestInfo.point2yValue);
hitTestInfo.point2metadata = dataSeries.getMetadataAt(hitRes.secondPointIndex);
}
}
return hitTestInfo;
};
BaseHitTestProvider.prototype.getTranslatedHitTestPoint = function (x, y) {
if (!this.currentRenderPassData || x === undefined || y === undefined) {
return undefined;
}
return (0, translate_1.translateFromCanvasToSeriesViewRect)(new Point_1.Point(x, y), this.parentSeries.parentSurface.seriesViewRect);
};
BaseHitTestProvider.DEFAULT_HIT_TEST_RADIUS = 7.07;
return BaseHitTestProvider;
}());
exports.BaseHitTestProvider = BaseHitTestProvider;