mvt_ctx_combine()

mvt_agg_context* mvt_ctx_combine	(	mvt_agg_context *	ctx1,
		mvt_agg_context *	ctx2
	)

Definition at line 1473 of file mvt.c.

{
        if (ctx1 || ctx2)
        {
                if (ctx1 && ! ctx2) return ctx1;
                if (ctx2 && ! ctx1) return ctx2;
                if (ctx1 && ctx2 && ctx1->tile && ctx2->tile)
                {
                        mvt_agg_context *ctxnew = palloc(sizeof(mvt_agg_context));
                        memset(ctxnew, 0, sizeof(mvt_agg_context));
                        ctxnew->tile = vectortile_tile_combine(ctx1->tile, ctx2->tile);
                        return ctxnew;
                }
                else
                {
                        elog(DEBUG2, "ctx1->tile = %p", ctx1->tile);
                        elog(DEBUG2, "ctx2->tile = %p", ctx2->tile);
                        elog(ERROR, "%s: unable to combine contexts where tile attribute is null", __func__);
                        return NULL;
                }
        }
        else
        {
                return NULL;
        }
}

References mvt_agg_context::tile, and vectortile_tile_combine().

Referenced by pgis_asmvt_combinefn().

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