lwpoint_get_z()

double lwpoint_get_z ( const LWPOINT *  point )

extern

Definition at line 89 of file lwpoint.c.

{
        POINT4D pt;
        if ( lwpoint_is_empty(point) )
        {
                lwerror("lwpoint_get_z called with empty geometry");
                return 0;
        }
        if ( ! FLAGS_GET_Z(point->flags) )
        {
                lwerror("lwpoint_get_z called without z dimension");
                return 0;
        }
        getPoint4d_p(point->point, 0, &pt);
        return pt.z;
}

References LWPOINT::flags, FLAGS_GET_Z, getPoint4d_p(), lwerror(), lwpoint_is_empty(), LWPOINT::point, and POINT4D::z.

Referenced by lwgeom_cluster_kmeans(), and lwgeom_project_spheroid().

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