lwline_from_lwmpoint()

LWLINE* lwline_from_lwmpoint	(	int	srid,
		const LWMPOINT *	mpoint
	)

Definition at line 290 of file lwline.c.

References LWMPOINT::geoms, getPoint4d_p(), LWDEBUGF, lwgeom_has_m(), lwgeom_has_z(), lwgeom_is_empty(), lwline_construct(), lwline_construct_empty(), LWMPOINT::ngeoms, LWPOINT::point, ptarray_construct(), and ptarray_set_point4d().

Referenced by encode_mpoint(), LWGEOM_line_from_mpoint(), lwmmpoint_to_encoded_polyline(), and test_lwline_from_lwmpoint().

{
        uint32_t i;
        POINTARRAY *pa = NULL;
        LWGEOM *lwgeom = (LWGEOM*)mpoint;
        POINT4D pt;

        char hasz = lwgeom_has_z(lwgeom);
        char hasm = lwgeom_has_m(lwgeom);
        uint32_t npoints = mpoint->ngeoms;

        if ( lwgeom_is_empty(lwgeom) )
        {
                return lwline_construct_empty(srid, hasz, hasm);
        }

        pa = ptarray_construct(hasz, hasm, npoints);

        for (i=0; i < npoints; i++)
        {
                getPoint4d_p(mpoint->geoms[i]->point, 0, &pt);
                ptarray_set_point4d(pa, i, &pt);
        }

        LWDEBUGF(3, "lwline_from_lwmpoint: constructed pointarray for %d points", mpoint->ngeoms);

        return lwline_construct(srid, NULL, pa);
}

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