Btw-- the "canvas" field isn't the only way to avoid throwing around gpointers.

Here's a quick pacman vector animation where I just animate by changing the
attributes of the drawing instruction. Since it's all vector drawings I can scale pacman
to any size I wish without it becoming pixelated:

http://pdblog.nfshost.com/pacman.webm

I guess the next step is to make pacman eat those objects as he moves over them.

-Jonathan

On 09/02/2015 02:29 PM, jamal crawford wrote:

hey list, Jonathan.

You start with a struct:[struct foo float x float y canvas a b]

Then create a scalar from this struct.

The scalar will have an "x" value, a "y" value, and a canvas "a" which gets filled with the contents of an abstraction "b.pd" that is somewhere in Pd's search path.

Now here's the neat thing-- inside the newly instantiated "b.pd" you can do this:

[loadbang]|[field x]|[print x]
imagine you have a drawing instruction like this:[draw rect 0 0 20 20]
When you create the scalar you get a little black box on a canvas.
With a canvas field like I described, you can right-click the scalar and choose "Open" to show a canvas window.
while trying to create [struct foo float x float y canvas a b], i get: canvas: no such type, using pd 0.46.6

what am I missing?

~/.jc