class AbstractGeographicProjection extends AbstractProjection {

    @Override
    public double getModelHeight()
    {
        final double northernmostLatitude = 90.;
        return convertToModel(
                new GeographicPosition(LatLonAlt.createFromDegrees(northernmostLatitude, 0., ReferenceLevel.ELLIPSOID)),
                Vector3d.ORIGIN).getY() * 2.;
    }

}