[mapserver-users] Mapcache - Howto provide additional high DPI tileset?

[thomas bonfort]

Should be doable, just define a new grid for it:

<grid name="g">
 <extent>-20037508.3427892480,-20037508.3427892480,20037508.3427892480,20037508.3427892480</extent>
<srs>EPSG:3857</srs>
<size>512 512</size>
<!-- level 0 of the original google grid is removed 156543.0339280410 -->
<resolutions>
78271.51696402048
39135.75848201023
19567.87924100512
9783.939620502561
4891.969810251280
2445.984905125640
1222.992452562820
611.4962262814100
305.7481131407048
152.8740565703525
76.43702828517624
38.21851414258813
19.10925707129406
9.554628535647032
4.777314267823516
2.388657133911758
1.194328566955879
0.5971642834779395
0.29858214173896975
</resolutions>
<!--.29858214173896975 is added-->
</grid>

--
thomas

On Tue, Jan 24, 2017 at 4:09 PM Michael Schulz <mandschulz at googlemail.com>
wrote:

> Dear MapCachers,
>
> I would like to know if anybody had success in using mapcache to provide
> tiles for usage on retina displays? There seems not to be the one default
> strategy to do so, but IIUC the baseline is to provide a bigger tile
> (512x512 instead of 256x256) for the some extent.
>
> Now the question is, how to generate with mapcache an additional cache
> with big tiles (512) but can be accessed using identical tile requests? By
> identical, I mean that the xyz numbers stay the same, but a different
> tileset name is used (e.g. basemaps.at does that) or using MapBox's "@2x"
> modifier.
>
> Any ideas or solutions?
>
> Thanks, Michael
>
>
> --
> -----------------------------------------------------------
> Michael Schulz
>
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> mapserver-users at lists.osgeo.org
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