<br><br><div class="gmail_quote">On Tue, Apr 19, 2011 at 7:27 PM, Ben Supnik <span dir="ltr"><<a href="mailto:bsupnik@xsquawkbox.net">bsupnik@xsquawkbox.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
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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.<br>
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(This of course puts more work on clients to calculate correct super-areas...)<br>
<br></blockquote><div><br></div><div>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:</div>
<div><ul><li>"Draw me a road network using OSM ways tagged with highway=motorway OR highway=trunk"</li><li>"Draw me simple polylines using OSM ways tagged with power=line"</li></ul><div>Sometimes you want to avoid excessive feature compositing because of performance reasons, so I'd leave the decision to the user.</div>
</div><div><br></div><div>lp Igor</div></div>