if (_north.y >= 90.)
_north.y = 180. - _north.y;
CoordinateConverter cc = _imageDisplay.getCoordinateConverter();
cc.worldToScreenCoords(center, false);
cc.worldToScreenCoords(_north, false);
cc.worldToScreenCoords(_east, false);
GeneralPath path = new GeneralPath();
ShapeUtil.addArrowLine(path, center, _north);
ShapeUtil.addArrowLine(path, center, _east);