Rotating Images: the rot sets in...

[Mathewson]

I'm playing around with rotating images and am wondering
about the phenomenon of "fuzzy edges".

Let us just suppose I have a GIF image which I want to
rotate in increments of 45 degs:
all very simple: described in Help files & so forth.

What is not explained is that the edges of the image (if it
is plain colour) or the whole image (if it is a picture)
will deteriorate markedly as it rotates.  This effectively
means that the
'rotate' term is not much use.  

If one has a family of images (in the case above I would
need 8) that each represent the image rotated at certain
increments one can keep replacing images (like a slide
show) to give an impression of rotation.  One could use an
animated GIF.....or a Quicktime Movie....or....blah, blah,
blah.   Makes your stack much larger!

The problem with this is if one is using the rotating image
as the template for the windowShape......

The 'rotate' term is great, in theory; but how can one keep
the image quality intact?

Ideas gratefully received.

Richmond Mathewson
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