[Tilecache] Multiple LAYERS support in WMS

[Frédéric Junod]

Hi,

I needed to have a multiple layer support in tilecache for the WMS service;
something like:

http://www.example.com/tilecache/?LAYERS=a,b,c&SERVICE=WMS&blabla

('a', 'b' and 'c' are layers defined in tilecache.cfg)

I hacked TC and you can find a patch in attachment.

The modification is quite simple: the layer's images are extracted from the
cache and merged with the Python Imaging Library.

Tested with r328 and mod_python on debian etch.

Regards,

fredj

-- 
Frédéric Junod
Camptocamp SA
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