sopiro(js) edge

import { Vector2 } from "./math.js";

import * as Util from "./util.js";

export class Edge {

constructor(p1, p2) {

constructor(p1, p2, id1 = -1, id2 = -1) {

this.p1 = p1.copy();

this.p2 = p2.copy();

if (this.p1.equals(this.p2))

this.dir = new Vector2(0, 0);

else

this.dir = p2.sub(p1).normalized();

this.id1 = id1;

this.id2 = id2;

}

get length() {

return this.p2.sub(this.p1).length;

}

get normal() {

return Util.cross(1, this.dir);

}

}