class AbstractGeographicProjection extends AbstractProjection {

    @Override
    public double getModelWidth()
    {
        final double easternmostLongitude = 180.;
        return convertToModel(
                new GeographicPosition(LatLonAlt.createFromDegrees(0., easternmostLongitude, ReferenceLevel.ELLIPSOID)),
                Vector3d.ORIGIN).getX() * 2.;
    }

}