//THREE.PLYLoader returns a BufferGeometry
createMesh(buffGeometry){
  let geometry = new THREE.Geometry().fromBufferGeometry( buffGeometry );
  var material = new THREE.MeshPhongMaterial( { specular: 0x111111, shininess: 200, vertexColors: THREE.VertexColors } );
  var mesh = new THREE.Mesh( geometry, material );
  mesh.scale.multiplyScalar( 0.5 );
  return mesh;
}