lwcircstring_get_lwpoint()

LWPOINT * lwcircstring_get_lwpoint ( const LWCIRCSTRING *  circ, uint32_t  where  )

extern

Definition at line 280 of file lwcircstring.c.

                                                                            {
        POINT4D pt;
        LWPOINT *lwpoint;
        POINTARRAY *pa;
 
        if ( lwcircstring_is_empty(circ) || where >= circ->points->npoints )
                return NULL;
 
        pa = ptarray_construct_empty(FLAGS_GET_Z(circ->flags), FLAGS_GET_M(circ->flags), 1);
        pt = getPoint4d(circ->points, where);
        ptarray_append_point(pa, &pt, LW_TRUE);
        lwpoint = lwpoint_construct(circ->srid, NULL, pa);
        return lwpoint;
}

References LWCIRCSTRING::flags, FLAGS_GET_M, FLAGS_GET_Z, getPoint4d(), LW_TRUE, lwcircstring_is_empty(), lwpoint_construct(), POINTARRAY::npoints, LWCIRCSTRING::points, ptarray_append_point(), ptarray_construct_empty(), and LWCIRCSTRING::srid.

Referenced by LWGEOM_dumppoints().

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