h displacement
				// Note: Jolt HeightField maps each pixel to a vertex, so actual terrain is a SIZE-1 grid
				const planeMesh = new THREE.Mesh(
					new THREE.PlaneGeometry(img.width * mapScale, img.width * mapScale, IMAGE_SIZE, IMAGE_SIZE),
					new THREE.MeshPhongMaterial({
						displacementMap: displacementMap,
						map: overlayMap,
						displacementScale: 256 * 0.1, // This should match the Y multiplier used on the ShapeSettings inScale.
						flatShading: true
					})
				);
				//ThreeJS Planes 