[Tilesathome] Tile retries

[spaetz]

On Mon, Sep 24, 2007 at 04:25:54PM +0200, Joost Overes wrote:
> Why are the names turning up right at z12? And why wouldn't they at z13? 
> (Look at 2098,1349 ; 2099,1349 ; 2098,1350 ; 2099,1350 the word "Leiden" is 
> divided over 4 z12-tiles)

This is because we download more than 1 z12 area and render that, so that names would show up there. currently we download something like 50% of the neighbouring tiles (left and right) and 10% of the tiles (above and below) as a margin.

> I mend instead op downloading a z12 tile, you download 4 z13 tiles (the 
> same way as z12 tiles but only smaller area's)

Which would increase the problems with large areas and text rendering. I'm not saying it is not solvable, I'm just saying we can't just do it wiith z13 tiles without changing something fundamentally.

> Inkscape is now the limiting factor for rendering tiles at z16/z17 with a 
> lot of nodes in it.

> So we must look for an alternative way of handling the rendering of the 
> tiles or use another svg2png program.

Yes

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