_material);
		plane.receiveShadow = true;
		scene.add(plane);

		const ambientLight = new t3d.AmbientLight(0xffffff, 0.4);
		scene.add(ambientLight);

		const directionalLight = new t3d.DirectionalLight(0xffffff, 1);
		directionalLight.position.set(-14, 15, 14);
		directionalLight.lookAt(new t3d.Vector3(), new t3d.Vector3(0, 1, 0));
		directionalLight.shadow.windowSize = 30;
		directionalLight.shadow.cameraNear = 1;
		directionalLight.shadow.cameraFar = 50;
		directionalLight.shadow.mapSize.set(512, 512);
	