}
static public Geometry octagonalEnvelope(Geometry arg0) {
if (arg0 == null) return null;
OctagonalEnvelope env = new OctagonalEnvelope(arg0);
return env.toGeometry(arg0.getFactory());
}
static public Geometry minimumDiameter(Geometry arg0) {
if (arg0 == null) return null;
MinimumDiameter minDiameter = new MinimumDiameter(arg0);