Re: [pygame] pygame.transform.rotozoom

["Nat Pryce" <nat.pryce@b13media.com>]

My problem is not with the new pixels being created, but with existing
translucent pixels disappearing in the scaled image.  I'm not rotating the
image; I'm using rotozoom to scale an image smaller with filtering.

Cheers,
            Nat.
________________________________
Dr. Nathaniel Pryce
B13media Ltd.
40-41 Whiskin St, London, EC1R 0BP, UK
http://www.b13media.com

----- Original Message -----
From: <wijgerden@hetnet.nl>
To: <pygame-users@seul.org>
Sent: Wednesday, January 23, 2002 1:39 PM
Subject: RE: [pygame] pygame.transform.rotozoom


> "Nat Pryce" <nat.pryce@b13media.com>:
> > I don't know what rotozoom does but I'll look
> > into it.  I'm going to have a dig around in
> > the source and see how it works because I'm
> > trying to debug why scaling an image with
> > rotozoom makes translucent pixels (alpha = 128)
> > become completely transparent.  Any hints
> > on that issue would be most appreciated.
>
> Maybe it follows the .rotate documentation a
> little bit: "There will be newly uncovered areas
> in the image. These will filled with either the
> current colorkey for the Surface, or the topleft
> pixel value. (with the alpha channel zeroed out
> if available)"
>
> No such "(with the alpha channel zeroed out if
> available)" portion in the .rotozoom description
> but maybe a good enough hint?
>
> Did you try my test case?  Does nothing with
> alpha as far as I know :-)
>
> Frank van Wijgerden
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> pygame-users@seul.org
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