[Squeakland] group objects

Alan Kay alan.kay at squeakland.org
Sat Mar 10 15:26:07 PST 2007

And of course, you can get out a playfield, fiddle with its options 
to allow it to be picked up, make it transparent, etc., then put it 
back in supplies, and it will form a prototype of this kind of playfield.

You can also use shift-drag to pick up a group of graphic objects to 
put them in the playfield. (This could be a smoother smarter 
operation than the current situation in Etoys.)



At 04:53 AM 3/10/2007, Bert Freudenberg wrote:
>Err, you're right - use a playfield to construct the script. However,
>once the script is there, you could actually replace the playfield
>tile with a rectangle tile and it will still work. Or even better,
>drop a "line's holder" tile into its place ...
>This is what I did when I tried it. The reason I preferred a
>Rectangle is that you can pick it up with all its contents. For a
>playfield you would have to fiddle with its options in the halo menu
>to achieve this.
>- Bert -
>On Mar 10, 2007, at 12:54 , Randy Heiland wrote:
> > Thanks Bert.  Ah yes, it's coming back to me.  However, don't I
> > need to use a Playfield as my "container" object?  I followed your
> > instructions - drawing a rectangle and embedding my line into it.
> > But then I couldn't find a "rectangle include" tile in any of the
> > categories - is it there and I just missed it?  In a playfield,
> > it's in the Collections category.
> >
> >
> > On Mar 10, 2007, at 3:45 AM, Bert Freudenberg wrote:
> >
> >> On Mar 10, 2007, at 2:40 , Randy Heiland wrote:
> >>
> >>> Apologies if I've asked this in the past and forgot... am I able to
> >>> group/join together multiple objects into a composite object?
> >>
> >> Sure, "embed" them into one "container" object. That can be any
> >> object, like a Rectangle, or an Ellipse may look nice, or just
> >> make it transparent.
> >>
> >>> I'd like to:
> >>>   - paint a fat line
> >>>   - script to:  rotate it and make copies
> >>>   - treat all lines as a single object
> >>
> >> Make a Rectangle. Draw the fat line on top of it. From the Line's
> >> halo menu choose "embed into ... Rectangle". Now when grabbing the
> >> rectangle, the line moves with it. Then make a script like "Line
> >> turnBy: 30. Rectangle include: Line's copy." and you're fine to go.
> >>
> >> - Bert -
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