On Tue, Dec 15, 2009 at 11:16 PM, John Smith <deltafoxtrot...@gmail.com> wrote: > It's not a hack, it's an easy way to order some elements when > rendering so things look right. A hack would be using the layer tag to > alter the rendering order to make things look better if the rendering > config is wrong.
Sorry, you're right, "hack" is not the right word. >No ! That's not ok to rely on any "reasonable" renderers. >This is exactly what we mean when we say "don't tag for the renderer". I think what you mean by "don't tag for the renderer" is almost exactly the opposite of what other people mean by it. You: Follow the rules (in this case, the requirements of dumb renderers that needed a layer tag to figure out that water goes below road)), don't expect smart renderers to figure it out. Certain others: Tag reality, renderers will eventually make sense of the data. IMHO, tagging "layer=1 bridge=yes" for a road going over water is an example of a hack, and "tagging for the renderer". The information "bridge=1" is more than enough to render with, so "layer=1" can *only* be interpreted as giving a renderer a crutch. (OTOH, tagging "layer=2 bridge=yes" for a road going over another elevated road is not "tagging for the renderer". It's encoding information that *any* renderer, no matter how smart, would need.) Steve _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
