@dominicstop/utils/lib/module/geometry/Line.js

Yet another event emitter written in typescript.

import { Point } from "./Point";
export class Line {
    constructor(args) {
        this.startPoint = args.startPoint;
        this.endPoint = args.endPoint;
    }
    ;
    get asValue() {
        return {
            startPoint: this.startPoint,
            endPoint: this.endPoint,
        };
    }
    ;
    get distance() {
        const deltaX = this.endPoint.x - this.startPoint.x;
        const deltaY = this.endPoint.y - this.startPoint.y;
        return Math.sqrt(deltaX * deltaX + deltaY * deltaY);
    }
    ;
    get midPoint() {
        const midX = (this.endPoint.x + this.startPoint.x) / 2;
        const midY = (this.endPoint.y + this.startPoint.y) / 2;
        return new Point({ x: midX, y: midY });
    }
    ;
    get slope() {
        const deltaX = this.startPoint.x - this.endPoint.x;
        const deltaY = this.startPoint.y - this.endPoint.y;
        return deltaY / deltaX;
    }
    ;
    get reversed() {
        return new Line({
            startPoint: this.endPoint,
            endPoint: this.startPoint,
        });
    }
    ;
    clone() {
        return new Line(this.asValue);
    }
    ;
    traverseByPercent(percentToTraverse) {
        return Point.lerp(this.startPoint, this.endPoint, percentToTraverse);
    }
    ;
    traverseByDistance(distanceToTraverse) {
        const totalDistance = this.distance;
        const percentTraversed = distanceToTraverse / totalDistance;
        const stopPoint = this.traverseByPercent(percentTraversed);
        return {
            percentTraversed,
            stopPoint
        };
    }
    ;
}
;