/**
* Function: createVertex
*
* Creates the vertex to be used in insertVertex.
*/
function &createVertex($parent, $id = null, $value = null, $x = 0, $y = 0, $width = 1, $height = 1, $style = null)
{
$geometry = new mxGeometry($x, $y, $width, $height);
$vertex = new mxCell($value, $geometry, $style);
$vertex->setId($id);
$vertex->setVertex(true);
return $vertex;
}
