Method GetAxesCount

ogr/ogrspatialreference.cpp:10919–10967

* \brief Return the number of axis of the coordinate system of the CRS. * * @since GDAL 3.0 */

 * @since GDAL 3.0
 */
int OGRSpatialReference::GetAxesCount() const
{
    TAKE_OPTIONAL_LOCK();

    int axisCount = 0;
    d->refreshProjObj();
    if (d->m_pj_crs == nullptr)
    {
        return 0;
    }
    d->demoteFromBoundCRS();
    auto ctxt = d->getPROJContext();
    if (d->m_pjType == PJ_TYPE_COMPOUND_CRS)
    {
        for (int i = 0;; i++)
        {
            auto subCRS = proj_crs_get_sub_crs(ctxt, d->m_pj_crs, i);
            if (!subCRS)
                break;
            if (proj_get_type(subCRS) == PJ_TYPE_BOUND_CRS)
            {
                auto baseCRS = proj_get_source_crs(ctxt, subCRS);
                if (baseCRS)
                {
                    proj_destroy(subCRS);
                    subCRS = baseCRS;
                }
            }
            auto cs = proj_crs_get_coordinate_system(ctxt, subCRS);
            if (cs)
            {
                axisCount += proj_cs_get_axis_count(ctxt, cs);
                proj_destroy(cs);
            }
            proj_destroy(subCRS);
        }
    }
    else
    {
        auto cs = proj_crs_get_coordinate_system(ctxt, d->m_pj_crs);
        if (cs)
        {
            axisCount = proj_cs_get_axis_count(ctxt, cs);
            proj_destroy(cs);
        }
    }
    d->undoDemoteFromBoundCRS();
    return axisCount;
}

/************************************************************************/
/*                          OSRGetAxesCount()                           */