[MapProxy] more opacity questions

Oliver Tonnhofer olt at omniscale.de
Tue Jan 10 07:55:27 EST 2012

On 08.01.2012, at 18:00, DeDuikertjes wrote:
> Does this limitation of PIL mean that if the source wms serves images with transparency AND semi transparent features (and Mapproxy config does NOT have any transparency settings) the result of a multi-layer request will have these problems?

No, MapProxy uses paste() instead of blend() in this case and paste() regards the existing alpha channel.

> Can these PIL problems be mitigated by having the source WMS serve images on a white background and set mapproxy transparency color to white?

It might work, but I haven't looked at the code.


Oliver Tonnhofer    | Omniscale GmbH & Co KG    | http://omniscale.de
http://mapproxy.org | https://bitbucket.org/olt | @oltonn

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