@devexpress/utils
Version:
DevExpress utils
48 lines (47 loc) • 1.72 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.LineEquation = void 0;
var math_1 = require("../utils/math");
var point_1 = require("./point");
var LineEquation = (function () {
function LineEquation(aParam, bParam, cParam) {
this.aParam = aParam;
this.bParam = bParam;
this.cParam = cParam;
}
LineEquation.prototype.equals = function (obj) {
return this.aParam === obj.aParam &&
this.bParam === obj.bParam &&
this.cParam === obj.cParam;
};
LineEquation.prototype.getIntersection = function (equation) {
return LineEquation.getIntersection(this, equation);
};
LineEquation.fromPoints = function (pointA, pointB) {
return new LineEquation(pointB.y - pointA.y, pointA.x - pointB.x, pointB.x * pointA.y - pointA.x * pointB.y);
};
LineEquation.getIntersection = function (a, b) {
var A1 = a.aParam;
var B1 = a.bParam;
var C1 = a.cParam;
var A2 = b.aParam;
var B2 = b.bParam;
var C2 = b.cParam;
var v = A2 * B1 - A1 * B2;
if (math_1.MathUtils.numberCloseTo(v, 0))
return null;
if (A1 === 0) {
var x = (B2 * C1 - C2 * B1) / (B1 * A2);
return new point_1.Point(x, -C1 / B1);
}
var y = (C2 * A1 - C1 * A2) / v;
return new point_1.Point((-B1 * y - C1) / A1, y);
};
LineEquation.equals = function (a, b) {
return a.aParam === b.bParam &&
a.bParam === b.bParam &&
a.cParam === b.cParam;
};
return LineEquation;
}());
exports.LineEquation = LineEquation;