Could it be this issue? http://code.google.com/p/googleappengine/issues/detail?id=4170
<http://code.google.com/p/googleappengine/issues/detail?id=4170> On Mon, Dec 20, 2010 at 5:43 AM, Tammo Freese <tammo.fre...@gmail.com>wrote: > Hi all, > > > I currently try to use the Images Python API to scale images. While > scaling works generally, there are two issues I'd love to know a way > to work around: > > - If I resize and crop a PNG image having an 8 bit alpha channel: > Expected: Transparency is not affected by scale & crop. > Actual: The transparent parts are black afterwards. > > - If I resize and crop a PNG image having no alpha channel: > Expected: The resulting image has no alpha channel. > Actual: The resulting image has an alpha channel. > > For both issues, I tried to prevent these using the images.composite > function, but could not find any work around: The PNG image I got in > the first case always gets the transparent parts in black, and the PNG > image in the second case always gets an alpha channel (even if the > background color used in images.composite is opaque). > > Do you know whether there are any workarounds for these issues? > > > Cheers, > > Tammo Freese > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- -- A. Stevko =========== "If everything seems under control, you're just not going fast enough." M. Andretti -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
