, 0xffffff);
		grid.position.set(30, -30, 0);
		scene.add(grid);

		const polargrid = new PolarGridHelper(30, 16, 8, 64, 0x0000ff, 0x808080);
		polargrid.position.set(-30, -30, 0);
		scene.add(polargrid);

		const axis = new AxisHelper(100);
		scene.add(axis);

		const _boxHelper = new Box3Helper(box3);
		scene.add(_boxHelper);

		const _sphereHelper = new SphereHelper(sphere, 0x00ffff);
		scene.add(_sphereHelper);

		const directionalLight = new t3d.DirectionalLight(0xbbbbff, 0.5);
		directionalLight.posit