[PD] Space Invaders 4D Game

Frank Barknecht fbar at footils.org
Tue May 8 12:35:14 CEST 2007

nosehair911 at bellsouth.net hat gesagt: // nosehair911 at bellsouth.net wrote:

> I'm just starting out in PD but 99.9% of the time I can break
> something down and figure out how it works or find something online,
> but can someone explain to me how to use two gemheads to render a
> pattern with just on geo.  I understand the textfile object and the
> text file part what I down get is why it works.

The double gemhead trick is based on "forced rendering". If you look
at the gemhead help file, you will see, that banging a gemhead will
make it render just one frame. 

In the double-gemhead configuration, the upper gemhead basically ist
just a metro driving the rendering of the lower gemhead with bangs.
(But you cannot use a normal metro here, as the bangs have to be timed
exactly in sync with the gemwin's frame rate.)

The lower gemhead as default is switched off (with a loadbang -> 0),
so that it is not rendering, unless it receives a bang. 

The with some simple [t b a] voodoo you can make many forced renderings of
the same geo but with different transformations applied to each. See
attached example patch for this in action.

 Frank Barknecht                 _ ______footils.org_ __goto10.org__
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