geos_envelope_surrogate()

static GEOSGeometry* geos_envelope_surrogate ( const LWGEOM *  g )

static

Definition at line 61 of file lwgeom_geos_cluster.c.

{
        if (lwgeom_is_empty(g))
                return GEOSGeom_createEmptyPolygon();
 
        if (lwgeom_get_type(g) == POINTTYPE) {
                const POINT2D* pt = getPoint2d_cp(lwgeom_as_lwpoint(g)->point, 0);
                return make_geos_point(pt->x, pt->y);
        } else {
                const GBOX* box = lwgeom_get_bbox(g);
                if (!box)
                        return NULL;
 
                return make_geos_segment(box->xmin, box->ymin, box->xmax, box->ymax);
        }
}

References getPoint2d_cp(), lwgeom_as_lwpoint(), lwgeom_get_bbox(), lwgeom_get_type(), lwgeom_is_empty(), make_geos_point(), make_geos_segment(), POINTTYPE, POINT2D::x, GBOX::xmax, GBOX::xmin, POINT2D::y, GBOX::ymax, and GBOX::ymin.

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