michaltakac/mathworldvr

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.SceneUtils = {

  createMultiMaterialObject: function ( geometry, materials ) {

    var group = new THREE.Group();

    for ( var i = 0, l = materials.length; i < l; i ++ ) {

      group.add( new THREE.Mesh( geometry, materials[ i ] ) );

    }

    return group;

  },

  detach: function ( child, parent, scene ) {

    child.applyMatrix( parent.matrixWorld );
    parent.remove( child );
    scene.add( child );

  },

  attach: function ( child, scene, parent ) {

    child.applyMatrix( new THREE.Matrix4().getInverse( parent.matrixWorld ) );

    scene.remove( child );
    parent.add( child );

  }

};