Hello! Glad to be posting for my first time. I'm a new user and I've been following tutorials on object deformation. I found a great series by Oscar Dahlén which has been super helpful. In it, he used a technique (much like this one: https://vimeo.com/80840429#t=55m30s) to change spring constraints to glue constraints on fractured objects once they've reached a certain angle. I was able to replicate his results and it worked great on the shape of a metal wall (which was the shape used in his tutorial).
However, when I apply the exact same process to a different shape (a street lamp, in this case), the spring constraints freak out. On the first frame of the simulation, the spring constraints piston outward and the original object loses its integrity. Within a few frames, the street lamp just looks like a jumbled mess.
So my question is this. How come in certain simulations spring constraints seem to hold fractured objects together (at least until another object impacts them), while in other simulations the spring constraints tear the object apart? I've toyed around with the constraints' strength, but if the strength gets too low then gravity just pulls everything downward and ruins the simulation. I'm sure I'm doing something wrong but I'm just not sure what it is. Thanks ahead of time for sharing your knowledge!
Need help understanding spring constraints
1247 2 1- ndixon54
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- Nicolas Heluani
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Hi @ndixon54,
You probably are not getting much help here because your problem could be caused by many different issues on your set up. The best thing would be if you can share a simplified replication of your problem.
According to what you describe I can think of 2 mayor culprits:
1 collision geometry in bullet colliding with each other.
2 rest length of the constraints wrongly imputed.
Bests,
Nico.
You probably are not getting much help here because your problem could be caused by many different issues on your set up. The best thing would be if you can share a simplified replication of your problem.
According to what you describe I can think of 2 mayor culprits:
1 collision geometry in bullet colliding with each other.
2 rest length of the constraints wrongly imputed.
Bests,
Nico.
- ndixon54
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