[plt-scheme] Scenes in 2htdp/image

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Mon Feb 1 16:30:40 EST 2010

In htdp/image, scenes were images with the pinhole at the upper right.
In 2htdp/image there are no pinholes, so the scene concept is

And yes, that's the equivalent, modulo the discussion about the nitty
gritty of pixel placement (which is really more of a discussion of
rectangles). See the docs on 2htdp/image for this nitty gritty


On Mon, Feb 1, 2010 at 2:45 PM, Justin Zamora <justin at zamora.com> wrote:
> What happened to scenes in 2htdp/image?  empty-scene and scene? have
> been removed from 2htdp/image.  Has the concept of scene been
> deprecated in favor of image?  In htdp/image, (scene? (rectangle 100
> 100 "outline" "black")) => false, but, in 2htdp/image, (rectangle 100
> 100 "outline" "black") seems to be the equivalent of (empty-scene 100
> 100) from htdp/image.  Can someone clarify?
> Justin
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