On Tue, Apr 19, 2011 at 7:27 PM, Ben Supnik <[email protected]> wrote:
> > Of course, it may _still_ be up to the renderer to decide when to connect > vs. not connect areas...I think under my distinctions here, the renderer > would have discretion in case 3 to 'merge or not merge' but in cases 1 and > 2, the correct behavior would always be to treat the super area as the area. > > (This of course puts more work on clients to calculate correct > super-areas...) > > The way I plan to solve this is to leave to the user to tell the renderer what kind of a feature she wants to draw and how to construct the feature from OSM primitives. So for example: - "Draw me a road network using OSM ways tagged with highway=motorway OR highway=trunk" - "Draw me simple polylines using OSM ways tagged with power=line" Sometimes you want to avoid excessive feature compositing because of performance reasons, so I'd leave the decision to the user. lp Igor
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