[plt-scheme] scaling and rotating images using image.ss

On Sep 26, 2009, at 9:43 AM, Yaron Minsky wrote:

> Nice to see everyone up so early on a Saturday morning!

You're late :-]


> Where is 2htdp/universe?  I just installed the latest PLT scheme  
> release, and I don't see anything called "universe" in the list of  
> teachpacks that comes up when I try to add a teachpack.


Use the scrollbar. It's there.




> Anyway, I'm glad to see this getting worked on.  I think one of the  
> things that Scratch got right is that it provides simple image  
> transformations, which turn out to be very useful in constructing  
> simple-yet-compelling games.  I think having more of this stuff for  
> drscheme will make it considerably more compelling for the younguns.
>
> y
>
> On Sat, Sep 26, 2009 at 9:29 AM, Matthias Felleisen <matthias at ccs.neu.edu 
> > wrote:
>
>
> 1. htdp/world is deprecated, use 2htdp/universe instead.
>
> 2. we consider the pinhole approach to our image library as a  
> mistake. To solve the problem Robby is working on 2htdp/image, a  
> replacement for the image library. When it comes out (end of  
> semester probably) it will support rotate and other such operations,  
> plus comparisons will be much faster.
>
> -- Matthias
>
>
>
>
>
>
> On Sep 26, 2009, at 9:17 AM, Yaron Minsky wrote:
>
> I'm playing around with the image.ss and world.ss teachpacks, and I  
> couldn't figure out how to scale and rotate images.  Are there such  
> image transformation functions in some other teachpack?
>
> y
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