<HTML dir=ltr><HEAD><TITLE>Re: [OSM-talk] Wrong scale in slippy map</TITLE>
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<DIV dir=ltr><FONT size=2><EM>El Viernes, 24 de Abril de 2009, Juan Lucas Dominguez Rubio escribió:<BR>> I think we ought to be able to do a projection where we turn the globe<BR>> into a symmetrical regular polyhedra. In effect at zoom level zoom<BR>> level 1 the world is a tetrahedron, as you go up you add more<BR>> equilateral triangles. while keeping your angles the same.<BR>><BR>> At each higher zoom level each triangular faces is split into 3<BR>> triangles. creating what gets closer and closer to a globe. Same way<BR>> as some footballs are made up of hexagons......<BR><BR>Nah, you really mean any azimuthal projection centered on the facets of a<BR>geodesic sphere. IIRC, it has been proposed already, some time ago.<BR><BR>Unfortunately, that means a complete overhaul of the renderers, *plus*<BR>switching openlayers from one projection to another on-the-fly when the user<BR>pans out of the current projection, *plus* a lenghty discussion on whether a<BR>gnomonic or an orthographic or a stereographic or a lambert azimuthal<BR>projection is best.<BR><BR>It'd be cool, but I don't think it's worth the hassle right now.<BR>--<BR>----------------------------------<BR>Iván Sánchez Ortega </EM><A href="mailto:ivan@sanchezortega.es"><EM>ivan@sanchezortega.es</EM></A><BR></FONT></DIV>
<DIV dir=ltr><FONT size=2><EM>===========================<BR></EM><BR><BR></FONT>oops.. misquoting me again. I did not write that...Is this a conspiration?</DIV>
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<DIV dir=ltr>"Un ordenador no es un televisor ni un microondas, es una herramienta compleja"</DIV>
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<DIV dir=ltr>Sure. Especially complex for you, apparently.<BR><BR>Regards, Juan Lucas<BR></DIV></DIV>
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