[racket] 2htdp/image question

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Fri Sep 10 18:22:06 EDT 2010

I believe this has been fixed in the latest GIT version. If someone
has the opportunity and interest to verify that under windows, I would
be most grateful.

More details can be found here, on the underlying issues (where to
draw lines for rectangles):


(The change I made is to make the outline in empty scene actually draw
entirely inside the scene instead of using an "outline" rectangle.)


On Fri, Sep 10, 2010 at 4:33 PM, Justin Zamora <justin at zamora.com> wrote:
> This is a bug/limitation of the Windows implementation.  I filed a bug
> report against this a few months ago
> (http://bugs.racket-lang.org/query/?cmd=view&pr=10969).  It apparently
> has something to do with the way 1-pixel lines are drawn and clipped
> on different platforms.
> Justin
> On Fri, Sep 10, 2010 at 5:23 PM, Mark Engelberg
> <mark.engelberg at gmail.com> wrote:
>> Why is it that
>> (empty-scene 100 100) produces a white scene with a black border
>> around all four edges, but
>> (place-image (circle 10 'solid 'red) 10 10 (empty-scene 100 100))
>> produces a scene with a black border only on its top and left edges?
>> (This is in Racket 5.0.1 on Windows)
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