/**
 * 
 * @param {*} geometry 
 * @return {*} 
 * morphTargetsPosition,
 * morphTargetsNormal,
 * _vertices
  _normals
  _colors
  _uvs
  _uvs2,
  _skinIndices,
  _skinWeights

 */
function fromGeometry(geometry) {

  var faces = geometry.faces;
  var vertices = geometry.vertices;

  if (vertices.length > 0 && faces.length === 0) {

    console.error('THREE.DirectGeometry: Faceless geometries are not supported.');

  }

  var _vertices = [],
    _normals = [];

  for (var i = 0; i < faces.length; i++) {

    var face = faces[i];

    _vertices.push(vertices[face.a], vertices[face.b], vertices[face.c]);

    var vertexNormals = face.vertexNormals;

    if (vertexNormals.length === 3) {

      _normals.push(vertexNormals[0], vertexNormals[1], vertexNormals[2]);

    } else {

      var normal = face.normal;

      _normals.push(normal, normal, normal);

    }

  }

  return {
    vertices: _vertices,
    normals: _normals,
  }
}

export default fromGeometry