image flipping problem -- bug entry?

[Marielle Lange]

The loss of quality of an image upon flipping has been reported as:
<http://quality.runrev.com/qacenter/show_bug.cgi?id=4512>

A visual illustration of the problem is provided at:
<http://quality.runrev.com/qacenter/attachment.cgi?id=627>
or you can try it for yourself using the demonstration stack
go url "http://revolution.widged.com/bugs/image_flipping_pb.rev"

related bug: 4098. Rotation looses the quality+transparency of the  
image, which has been confirmed on 2.8 by runrev staff yesterday  
(hey, they go through the list of bugs ;-) ).

A work around for this problem is to first parse the alphadata to  
replace all values under 15 by a value of 0 and all values over 240  
by a value of 255. Some code for manipulating the alphadata of a  
picture was provided at:
<http://forums.runrev.com/phpBB2/viewtopic.php?t=418>

Best,
Marielle

------------------------------------------------
Marielle Lange (PhD),  http://widged.com
Bite-size Applications for Education