scichart
Version:
Fast WebGL JavaScript Charting Library and Framework
109 lines (108 loc) • 6.23 kB
JavaScript
;
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 __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.PolarLineSeriesHitTestProvider = void 0;
var Point_1 = require("../../../../../Core/Point");
var HitTestInfo_1 = require("../../HitTest/HitTestInfo");
var hitTestHelpers_1 = require("../../HitTest/hitTestHelpers");
var annotationHelpers_1 = require("../../../Annotations/annotationHelpers");
var AnnotationBase_1 = require("../../../Annotations/AnnotationBase");
var pointUtil_1 = require("../../../../../utils/pointUtil");
var PolarDataPointHitTestProvider_1 = require("./PolarDataPointHitTestProvider");
var DpiHelper_1 = require("../../../TextureManager/DpiHelper");
var DEFAULT_RADIUS = 10;
/**
* Hit-test provider for {@link PolarLineRenderableSeries}. See base class {@link BaseHitTestProvider} for further info
*/
var PolarLineSeriesHitTestProvider = /** @class */ (function (_super) {
__extends(PolarLineSeriesHitTestProvider, _super);
function PolarLineSeriesHitTestProvider() {
return _super !== null && _super.apply(this, arguments) || this;
}
/** @inheritDoc */
PolarLineSeriesHitTestProvider.prototype.hitTest = function (x, y, hitTestRadius) {
var _this = this;
if (hitTestRadius === void 0) { hitTestRadius = DEFAULT_RADIUS; }
// convert to polar and add necessary offset
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 = hitTestPoint.x;
var yHitCoord = hitTestPoint.y;
var dataSeries = this.parentSeries.dataSeries;
if (!dataSeries) {
return HitTestInfo_1.HitTestInfo.empty();
}
var xNativeValues = dataSeries.getNativeXValues();
var yNativeValues = dataSeries.getNativeYValues();
var xPolarAxis = this.parentSeries.xAxis;
var getCartesianCoordsFn = function (index$) {
var x = xNativeValues.get(index$);
var y = yNativeValues.get(index$);
var xCoord = xCoordinateCalculator.getCoordinate(x);
var yCoord = yCoordinateCalculator.getCoordinate(y);
var angle = isVerticalChart ? yCoord : xCoord;
var radius = isVerticalChart ? xCoord : yCoord;
var res = annotationHelpers_1.annotationHelpers.convertPolarToCartesian(xPolarAxis, false, _this.webAssemblyContext, AnnotationBase_1.ECoordinateMode.Pixel, angle * DpiHelper_1.DpiHelper.PIXEL_RATIO, radius);
return new Point_1.Point(res.x, res.y);
};
var minDistance = Number.MAX_VALUE;
var minDistanceIndex1 = -1;
var minDistanceIndex2 = -1;
var updateMinDistFn = function (dist$, ind1$, ind2$) {
if (ind2$ === void 0) { ind2$ = -1; }
if (dist$ < minDistance) {
minDistance = dist$;
minDistanceIndex1 = ind1$;
minDistanceIndex2 = ind2$;
}
};
if (dataSeries.count() > 0) {
var point1Coords = getCartesianCoordsFn(0);
var distanceToPoint1 = (0, pointUtil_1.calcDistance)(xHitCoord, yHitCoord, point1Coords.x, point1Coords.y);
updateMinDistFn(distanceToPoint1, 0);
for (var i = 1; i < dataSeries.count(); i++) {
var point2Coords = getCartesianCoordsFn(i);
var lineSegmentLength = (0, pointUtil_1.calcDistance)(point1Coords.x, point1Coords.y, point2Coords.x, point2Coords.y);
var distanceToPoint2 = (0, pointUtil_1.calcDistance)(xHitCoord, yHitCoord, point2Coords.x, point2Coords.y);
updateMinDistFn(distanceToPoint2, i);
var isHitPointInLineSegmentVicinity = distanceToPoint1 < lineSegmentLength && distanceToPoint2 < lineSegmentLength;
if (isHitPointInLineSegmentVicinity) {
var distanceToLine = (0, pointUtil_1.calcDistanceFromLine)(xHitCoord, yHitCoord, point1Coords.x, point1Coords.y, point2Coords.x, point2Coords.y);
if (distanceToLine < minDistance) {
if (distanceToPoint1 < distanceToPoint2) {
updateMinDistFn(distanceToLine, i - 1, i);
}
else {
updateMinDistFn(distanceToLine, i, i - 1);
}
}
}
point1Coords = point2Coords;
distanceToPoint1 = distanceToPoint2;
}
}
var polarHitTestPoint = xPolarAxis.reverseTransform(hitTestPoint.x, hitTestPoint.y);
var hitTestInfo = hitTestHelpers_1.hitTestHelpers.createHitTestInfo(this.parentSeries, xCoordinateCalculator, yCoordinateCalculator, isVerticalChart, dataSeries, xNativeValues, yNativeValues, polarHitTestPoint.x, polarHitTestPoint.y, minDistanceIndex1, hitTestRadius);
hitTestInfo.isHit = minDistance < hitTestRadius;
return hitTestInfo;
};
return PolarLineSeriesHitTestProvider;
}(PolarDataPointHitTestProvider_1.PolarDataPointHitTestProvider));
exports.PolarLineSeriesHitTestProvider = PolarLineSeriesHitTestProvider;