Physics Weirdness

[willsanquil]

Basically, I'm having problems with getting lemur objects (multiball, ring area etc) to respond 'properly' (or what I think is proper) to physics.

I am working through the JazzMutant Youtube series on Lemur and Ableton and MIDI mapping here:

http://www.youtube.com/watch?v=cyhwVTFM ... ideo_title

I was able to follow along and make the faders work in ableton, I could make the multiball control parameters, but I ran into a strange problem with the friction settings of the multiball...

In the video, he has you put in a multiball object, then tie a fader to that multiball's friction parameter.

So, I add a fader, call it Friction - I add a multiball object.

I set the multiball physics to mass-spring, I change the friction to Friction.x

Now, when I move the fader it does have the intended effect of modifying the friction.

However, now I want to go ahead and set what the X and Y of the multiball is doing. So, in the MIDI panel of the multiball I have X and the Target by default is none. I need to change this to MIDI 0, change the Message to Control Change, and assign it a unique controller number. If I do this, I will indeed be able to map the multiball to something in Ableton...but the physics breaks.

As soon as I set the target to MIDI 0 - the ball instantly stops moving and the fader no longer has an effect at all. If I set the target to anything besides MIDI 0 (1,2,3, none etc) the physics will un-break.

I do not understand this, because I'm following the exact steps he's taking and getting different results. Do I have my MIDI in and out from MIDI Yoke and the Lemur Daemon not set up correctly?

I have included a screenshot of my ableton settings and my lemur daemon settings with the lemur editor in the background. Any help figuring this out would be very much appreciated!

[willsanquil]

Doing some more testing, and yeah as soon as I set the X or Y data of a MultiBall or a RingArea to MIDI 0, the physics get all weird - but as soon as I change it back, they fix themselves...but they're no longer sending any data so they're useless

I have also gone through and changed my MIDI channels that I've been sending and receiving to/from to different MIDI channels and this behavior replicates.

[nick_liine]

HI Will,

I think you are running into MIDI feedback. MIDI Yoke, and other similar virtual MIDI cables, are bi-directional. You need to choose a different one for input and output. In your case, you have MIDI Yoke 1 on both.

Let me know if that helps.

Cheers,
Nick

[willsanquil]

Yay! that totally fixed it, thanks Nick

Quick response and a quick fix - I love that!

Still getting used to using MIDI in a more complicated way than just dropping MIDI notes into a piano roll

This software is fantastic, I'm having a blast making my own Ableton template. You guys are the ****.