[ptx] preview updates during incremental optimisation

[Pablo d'Angelo]

pablo.dangelo at informatik.uni-ulm.de wrote:
> Zitat von "J. Schneider" <j-schneid at web.de>:
> 
> 
>>Hi all,
>>
>>different problem in detail, but also something that slows hugin down:
>>When optimizing incrementally (and auto update of preview is on), the
>>preview is updated once after half way optimizing and another time after
>>clicking "apply". Why?
> 
> 
> Because the incremental optimisation doesn't use PTOptimizer, but calls
> pano12.dll directly. After that PTOptimizer is used to optimize all images
> globally. Between that some internal data structures are updated, which leads to
> updates in the GUI.
> 
> This is a bug, and I'll fix it.

After a closer look, fixing this needs some internal changes that affect 
many parts of hugin. Therefore it will be done after 0.5 has been released.

ciao
   Pablo