unroll_collection()

static void unroll_collection ( LWPOINTITERATOR *  s )

static

Remove an LWCOLLECTION from the iterator stack, and add the components of the LWCOLLECTIONs to the stack.

Definition at line 120 of file lwiterator.c.

References add_lwgeom_to_stack(), LWPOINTITERATOR::geoms, LISTNODE::item, lwcollection_getsubgeom(), LWCOLLECTION::ngeoms, and pop_node().

Referenced by unroll_collections().

{
        int i;
        LWCOLLECTION* c;

        if (!s->geoms)
        {
                return;
        }

        c = (LWCOLLECTION*) s->geoms->item;
        s->geoms = pop_node(s->geoms);

        for (i = c->ngeoms - 1; i >= 0; i--)
        {
                LWGEOM* g = lwcollection_getsubgeom(c, i);

                add_lwgeom_to_stack(s, g);
        }
}

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