[Squeakland] pen trails

[Andreas Raab]

Hi Randy,

The easiest way of doing this is to use a transparent playfield. E.g., get
your image and put it on the screen (you may want to lock it so you don't
touch it accidentally). Then get yourself a playfield and set its color to
transparent. Position it to your needs (e.g., either so that it just covers
the JPEG or so that it covers the screen) and that's it. Any pen trails
drawn within the playfield will appear on top of the JPEG image.

Note that it is advantageous if you make the playfield the size of the
project. Otherwise, you might get confused if you (accidentally or not) drop
something outside of it as the pentrails will then again be hidden under the
JPEG.

Hope this helps,
  - Andreas

> -----Original Message-----
> From: squeakland-bounces at squeakland.org 
> [mailto:squeakland-bounces at squeakland.org] On Behalf Of Randall Caton
> Sent: Thursday, May 08, 2003 2:44 AM
> To: squeakland at squeakland.org
> Subject: [Squeakland] pen trails
> 
> 
> Does anyone know how to get pen trails to write on top of an imported
> graphic (e.g. jpg)? Can it be done?
> 
> Randy Caton
> 
> --
> Randall Caton
> Department of Physics, Computer Science and Engineering
> Christopher Newport University
> 1 University Place
> Newport News, VA 23606
> Gosnold Hall 136
> Voice: 757-594-7188
> FAX: 757-594-7919
> email: rcaton at pcs.cnu.edu
> web: www.pcs.cnu.edu/~rcaton/
> 
> 
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