function LineHelper(object, hex)
{
	Line.call(this, object.geometry, object.material.clone());

	this.material.color = new Color(hex !== undefined ? hex : 0xFFFF00);
	
	/**
	 * Object attached to the helper
	 *
	 * @attribute object
	 * @type {Object3D}
	 */
	this.object = object;
	
	this.matrixAutoUpdate = false;
	this.update();
}
Line helper is used to preview Line objects.

@class LineHelper
@param {Line} object
@param {number} hex Helper color in hexadecimal.