BorderLine extends THREE.Mesh (an Object3D) and is used to render the box border set by KSS
function BorderLine(lineWidth = [0.01, 0.01, 0.01, 0.01], width = 0, height = 0, radius = [0, 0, 0, 0]) {
	THREE.Mesh.call(
		this,
		new BorderGeometry(lineWidth, width, height, radius),
		new THREE.MeshStandardMaterial({
			side: THREE.DoubleSide
		}),
		undefined
	)
	this.name = 'BorderLine'
	// Shadow SOM nodes are ignored during some layout calculations
	this.shadowSOM = true
}