text: /**
   * @author WestLangley / http://github.com/WestLangley
   *
   */
  
  THREE.Wireframe = function ( geometry, material ) {
  
  	THREE.Mesh.call( this );
  
  	this.type = 'Wireframe';
  
  	this.geometry = geometry !== undefined ? geometry : new THREE.LineSegmentsGeometry();
  	this.material = material !== undefined ? material : new THREE.LineMaterial( { color: Math.random() * 0xffffff } );
  
  };
  
  THREE.Wireframe.prototype = Object.assign( Object.create( THREE.Mesh.prototype ), {
  
  	constructor: THREE.Wireframe,
  
  	isWireframe: true,
  
  	computeLineDistances: ( function () { // for backwards-compatability, but could be a method of LineSegmentsGeometry...
  
  		var start = new THREE.Vector3();
  		var end = new THREE.Vector3();
  
  		return function computeLineDistances() {
  
  			var geometry = this.geometry;
  
  			var instanceStart = geometry.attributes.instanceStart;
  			var instanceEnd = geometry.attributes.instanceEnd;
  			var lineDistances = new Float32Array( 2 * instanceStart.data.count );
  
  			for ( var i = 0, j = 0, l = instanceStart.data.count; i < l; i ++, j += 2 ) {
  
  				start.fromBufferAttribute( instanceStart, i );
  				end.fromBufferAttribute( instanceEnd, i );
  
  				lineDistances[ j ] = ( j === 0 ) ? 0 : lineDistances[ j - 1 ];
  				lineDistances[ j + 1 ] = lineDistances[ j ] + start.distanceTo( end );
  
  			}
  
  			var instanceDistanceBuffer = new THREE.InstancedInterleavedBuffer( lineDistances, 2, 1 ); // d0, d1
  
  			geometry.addAttribute( 'instanceDistanceStart', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 0 ) ); // d0
  			geometry.addAttribute( 'instanceDistanceEnd', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 1 ) ); // d1
  
  			return this;
  
  		};
  
  	}() ),
  
  	copy: function ( /* source */ ) {
  
  		// todo
  
  		return this;
  
  	}
  
  } );
  