lwpointiterator_next()

int lwpointiterator_next	(	LWPOINTITERATOR *	s,
		POINT4D *	p
	)

Attempts to assign the next point in the iterator to p, and advances the iterator to the next point.

If p is NULL, the iterator will be advanced without reading a point. Returns LW_SUCCESS if the assignment was successful, LW_FAILURE otherwise.

Definition at line 212 of file lwiterator.c.

References LW_FAILURE, LW_SUCCESS, lwpointiterator_advance(), lwpointiterator_has_next(), and lwpointiterator_peek().

Referenced by count_points_using_iterator(), lwgeom_calculate_mbc(), lwgeom_get_geos_coordseq_2d(), lwline_from_lwgeom_array(), lwmpoint_from_lwgeom(), mbc_test(), test_mixed_rw_access(), test_modification(), test_no_memory_leaked_when_iterator_is_partially_used(), and test_ordering().

{
        if (!lwpointiterator_has_next(s))
                return LW_FAILURE;

        /* If p is NULL, just advance without reading */
        if (p && !lwpointiterator_peek(s, p))
                return LW_FAILURE;

        lwpointiterator_advance(s);
        return LW_SUCCESS;
}

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