[racket] rotate an image using 2htdp/image

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Mon Jul 19 17:52:11 EDT 2010

Well, the 2htdp/image library does not work like that. If you overlay
and the rotate then your background will be roated. If you rotate and
then overlay the you may place things in different (relative)
positions but you still don't get any different behavior by rotating
around different points.

Maybe our original poster can supply a small example and then we'll be
able to get at the real question?


On Monday, July 19, 2010, Eugene Wallingford <wallingf at cs.uni.edu> wrote:
>> > Just want to clear up things....the how can adjust the pinhole or the
>> > rotation center?
>> There is no pinhole. My earlier reply was trying to tell you that this
>> question does not make sense.
>      Perhaps Matthew is concerned not so much with the
>      resulting orientation of the image as with its
>      resulting location in the original field.  If I
>      rotate an image 180 degrees about its upper
>      leftmost corner, most or all of it may be out
>      the original view.
> ---- Eugene
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