[Tilesathome] DeleteRealTile issue

[Dirk-Lüder Kreie]

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spaetz schrieb:
> On Mon, Jul 30, 2007 at 05:02:06PM +0200, spaetz wrote:
>> Now my questions:
>>  - Does DeleteReealTile really have to be called in both cases?
>>  - Am I right that a Type=0 would mean there used to be a blank file, but now we move a proper tile to that location? I haven't familiarized myself with the Blank Tile code yet.
> 
> Ohh, I had a proper look at the code now. It seems that Type=0 is called when we upload a 0 sized tile which is a request to delete both the Blank Tile *and* the Real Tile. Why would we have such a feature? I can understand why people would replace false tiles with blank ones, but deleting *both* will leave a gap in there and should not be allowed IMHO.
> 
> t at h client developers: in which cases would we upload 0-sized tile files?

The client does not create 0-sized files at all.
There was however some thought of being able to "clean up" the blank
tile management by not storing empty land/empty sea/non empty for each
tile but at "master zooms" for bigger areas of water/unmapped land.
So this was used as a method for (manual?) cleanup of the empty tile db
doable by any t at h contributor.

- --

Dirk-Lüder "Deelkar" Kreie
Bremen - 53.0952°N 8.8652°E

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