caseEditor/src/core/box/object/TouchEdge.js

import * as THREE from "three";
import { Line2 } from 'three/examples/jsm/lines/Line2.js';
import { LineGeometry } from 'three/examples/jsm/lines/LineGeometry.js';

export default class TouchEdge extends THREE.Group {
  constructor(positions, matLine) {
    super()

    positions.forEach((i, j) => { //top left bottom right
      const geometry = new LineGeometry();
      geometry.setPositions( i );

      const line = new Line2( geometry, matLine );
      line.scale.set( 1, 1, 1 );
      line.position.y += 0.5
      line.name = j
      line.visible = false
      line.x = i[0]
      line.y = i[2]
      this.add( line );
    });
    console.log(this)
  }
}