Hey Julian,
a few minutes ago I had a look at your scene. Great setup for the null.
Easy and fast! Thanks for that.
Andreas
On 6/16/2013 6:27 PM, Julian Johnson wrote:
Not sure how helpful this is but it shows how to drive the kinematics
of a 'Follower' null with a spring constraint acting on its ICE
Kinematics. It requires a simulated tree. I don't think there's any
way of producing the same effect without simulation. With only a
modeling stack you only have access to the current frame's data. To
use just press play and drag the 'Master' null around. You can play
with damping, mass and stiffness.
There's also an example of a projectile simulation (using the standard
particle system and Simulate Particles) compared with a Null which has
it's kinematics driven by a hand-built 'simulate' compound using a
basic Euler integration technique (the same one, I think, they use in
the built-in compound). All the concepts are directly transferable
e.g. in this example both systems use the built in Gravity force and
it works in the same way.
Scene (2013 SP1) here:
https://dl.dropboxusercontent.com/u/69741069/jj_spring_null_euler.rar
Julian
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