🚀 go-pugleaf

In article <1gt0m2INNi71@godard.dfki.uni-sb.de>, zenner@dfki.uni-sb.de
(Frank Zenner) writes: 
|> The problem is the following: 
|> I cannot force InterViews to update a glyph without an user 
|> interaction.

Try Dispatcher class to update your glyph.  There is a man page on it.
You can use a timer to generate the position update.  Look at the
morpher example (iv/src/examples/morpher/morpher.c) and check out
Morpher::execute(), where they use:

Dispatcher::instance()->startTimer(0,100000,_m_impl->_callback);

where _callback is:

new IOCallback(Morpher)(this, &Morpher::tick)

----------
As far as the problem with the update, I'm a novice, too, but I don't
see why you need a canvas as well as a glyph.  Seems to me you could
just declare a bullet glyph with a 400x400 requisition, and put it in
a patch.  Bullet::draw() has a Canvas and Allocation as parameters, so
it can draw itself on it's canvas.  A glyph's draw operation is called
implicitly when you call patch->redraw().  I create the Patch in
main(), giving it the glyph.  Then I pass the patch into storage in
the glyph using a glyph->patch( Patch* patch ) sort of access routine.
Then my glyph is always able to redraw itself.  Possibly your 2
canvases are complicating things.

I'll be interested to see your results

Mike Howard, Hughes Research Labs