Exemplos de OGRPolygon::importFromWkt em C++ (Cpp)

Exemplo n.º 1

Arquivo: ogrsqliteselectlayer.cpp Projeto: imincik/pkg-gdal

int OGRSQLiteSelectLayer::TestCapability( const char * pszCap )

{
    if (EQUAL(pszCap,OLCFastSpatialFilter))
    {
        if (osSQLCurrent != osSQLBase)
            return TRUE;

        size_t i = 0;
        OGRSQLiteLayer* poBaseLayer = GetBaseLayer(i);
        if (poBaseLayer == NULL)
        {
            CPLDebug("SQLITE", "Cannot find base layer");
            return FALSE;
        }

        OGRPolygon oFakePoly;
        const char* pszWKT = "POLYGON((0 0,0 1,1 1,1 0,0 0))";
        oFakePoly.importFromWkt((char**) &pszWKT);
        CPLString    osSpatialWhere = poBaseLayer->GetSpatialWhere(&oFakePoly);

        return osSpatialWhere.size() != 0;
    }
    else
        return OGRSQLiteLayer::TestCapability( pszCap );
}

Exemplo n.º 2

Arquivo: test_ogr_geos.cpp Projeto: drons/gdal

    void object::test<2>()
    {
        char* wkt = "POLYGON((0 0,4 0,4 4,0 4,0 0),(1 1, 2 1, 2 2, 1 2,1 1))";
        OGRPolygon geom;
        err_ = geom.importFromWkt(&wkt);
        ensure_equals("Can't import geometry from WKT", OGRERR_NONE, err_);

        GEOSGeom geosGeom = geom.exportToGEOS();
        ensure("Can't export geometry to GEOS", NULL != geosGeom);

        GEOSGeom_destroy(geosGeom);
    }