diagnose failure of interactive

[davidwhogg]

it doesn't work for me.

[jakevdp]

I had another friend tell me that everything worked, except there was no animation of the face turns. My guess is there is different draw() behavior between systems/backends. It may be worth asking on the matplotlib list.

For reference, a video of how it looks on my machine can be seen here: http://jakevdp.github.com/blog/2012/11/26/3d-interactive-rubiks-cube-in-python/

[davidwhogg]

Is there a backend in your .matplotlibrc? And/or can you specify a backend where you know it works? Then I can use that one.

[jakevdp]

I've only tested it on TkAgg

[richardhart89]

On Mac OS X using TkAgg backend, I was having the problem with no animation of the cube layers movement. This is the fix that worked for me.

At the end of the _draw_cube method after the call to self.figure.canvas.draw() add the following line:

self.figure.canvas.flush_events()

That should do it.

I got a clue when running the code under a debugger and saw that the cube layers did indeed animate. I also saw the animation when run unmodified on a RPi. The Matplotlib docs did say the plot is not automatically re-drawn with the draw method.