[mapguide-internals] Dynamic tile rendering proposal

[Zac Spitzer]

Kenneth, do you think meta tiling could also solve this problem?

On Thu, Jul 31, 2008 at 7:20 PM, Kenneth Skovhede, GEOGRAF A/S
<ks at geograf.dk> wrote:
> The current tile mechanism is using static images to serve pre-built images
> as tiles.
> For this reason, the tiles are only usefull with "base layers".
>
> I have worked with OpenLayers, and it has a very nice tiling mechanism.
> DM Solutions have built some tiling support into the MapGuide provider for
> OpenLayers.
> This uses the static tiles, and the row/column index system in MapGuide.
>
> Using the "original" OpenLayers tiling mechanism one can get a dynamic
> MapGuide image
> to load as tiles, giving the illusion that the page loads faster (when it
> actually loads a bit slower).
>
> The problem with this method is that MapGuide optimizes the rendered image
> for the given bounds.
> This is especially true for calculating label positions and overlaps.
> I would like to add a parameter for the "GETMAPIMAGE" call that accepts an
> "outer bounds" parameter.
>
> With this parameter, MapGuide should render the extent given by the extent
> parameter, but use the outer
> bounds for determining label placements and any other details that may have
> the same problems.
>
> With this, it would be possible for MapGuide to serve tiles from MapGuide,
> without relying on a
> static tilcache.
>
>
> I would like to add this as an RFC, but would like feedback on the idea, as
> well as possible problems.
>
> --
> Regards, Kenneth Skovhede, GEOGRAF A/S
>
>
> _______________________________________________
> mapguide-internals mailing list
> mapguide-internals at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-internals
>



-- 
Zac Spitzer -
http://zacster.blogspot.com (My Blog)
+61 405 847 168