Re: [pygame] Possible problem in transform

["Mike Benfield" <mike@duckbrain.com>]

I believe rotate and rotozoom are destructive operations - they're not
supposed to keep all the information. I just keep the original image on
hand and then always rotate from that. ie, rather than rotating 45
degrees once and then rotate the new image 45 degrees again, I rotate 45
degrees, and then go back and rotate the original image 90 degrees and
use that. Hopefully that makes sense, and hopefully this is actually
what your problem is. 

On Tue, Jan 22, 2002 at 01:08:41AM +0100, wijgerden@hetnet.nl wrote:
> There might be a problem in the rotate and rotozoom routines of pygame.transform (I'm running PyGame 1.3 on Windows Me)
> 
> I've created a showPossibleError.zip file which includes a showPossibleError.py file and a showPossibleError.bmp file. You can download it from http://fvw.freezope.org/PyGame/showPossibleError.zip (or visit http://fvw.freezope.org and download the .py and .bmp seperatly).
> 
> The showPossibleError.zip demonstrates how rotate and rotozoom loose information when rotating a 16x16 image. IMO that shouldn't happen...
> 
> Since I'm very new to Python and PyGame, I could also be doing something wrong :-)
> 
> Regards,
> 
> Frank van Wijgerden
> 
> 
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