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Constraining specific axis movement using dynamics
Is there a way to constrain movement on a specified axis while using dynamics? I have a series of blocks falling, and I only want to have them move on the Y axis. I used a connector object for all of the blocks (set to the slider type on the Y axis), but after the blocks fall, they still move on the X and Z axis and never quite sit still. All of the searching on dynamic constraints has only turned up constraining splines using the tag for hair dynamics.
If there is a way to just “turn off” the dynamics to have the blocks settle in this simulation after they fall, that would work as well. I’ve tried animating the gravity and mass, but too much force just crushes and disrupts the blocks.
Thanks much!
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3 Replies
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The slider/connector should do what you want, but you’d have to have a separate connector for each object.
Alternatively, you could cache the dynamics tag, bake the animation (timeline>function>bake object), and then delete the position x,z tracks for each object.
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I tried that route, but when I bake the simulation, it goes haywire. I’m working on an xpresso tag now to keep the X and Z constant, not sure if that will conflict w/ the dynamics or not…
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With a little more testing, I was able to bake the dynamics and get this solution to work. Thanks!!!
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