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Is possible instancing objects and control individually any object instaced?

I have to simulate a chain snow tire and is difficult to check all links in the chain or used for rodeo dynamics.

I used the morph target, but the result is not satisfactory, the movement is too stiff and unnatural.

I also simulate a steel cable without plugins.

I can post some pictures and the EIAS project if anyone can help me.

I urgent need to solve the problem.

Any suggestions?

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I have try instancer, this is powerfull but not permit to control individually objects instanced.

I chose to do with bones and morph target, this is not right way and no fast setup but permit to control any object individually. Next I save FACT files for any morph position and open it in new animation project. The result are "rigid", but morphing setup are very simple and fast.

http://www.vgd.it/scambio/eias/Bmw_arrivo.mp4

http://www.vgd.it/scambio/eias/Bmw_bagagli.mp4

http://www.vgd.it/scambio/eias/Bmw_appoggio.mp4

http://www.vgd.it/scambio/eias/Bmw_blocco.mp4

http://www.vgd.it/scambio/eias/Bmw_serraggio.mp4

http://www.vgd.it/scambio/eias/Bmw_partenza.mp4

The second chain are very difficult to setup and animate. I attach two picture for explain. This chain are very very soft. How can I simulate the softness of this chain and fabric together?

I tried to use Rodeo and Simcloth together but the result was bad.

Can anyone help me solve the problem?

Would be sufficient to have soft morph targets to animate smootly.

http://www.vgd.it/scambio/eias/hybrid_chain1.jpg

http://www.vgd.it/scambio/eias/hybrid_chain2.jpg

post-79-13269393671229_thumb.jpg

post-79-13269393671567_thumb.jpg

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  • 2 weeks later...

IIRC, the v7 is compatible with v8... I dont recall having outstanding issues. According to my notes, v7 was fixed and running Jan of this year.

If there are issues, let me know and I can address them. (FYI, was out on a MUCH needed vacation so missed the post the first time.)

Cj

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Hi vgd,

Sorry for the delay in responding to your tire chain question. I spent some time on it, with rather poor results until I figured out what SimCloth wanted with regard to the models. At first I thought it might be the adaptive tessellation in the EI modeler that was the problem. Then I tried the more predictable tessellation of Maya, with better results. But the real key to all this is to make sure the scale of your objects isn’t too small. (The simulation breaks down and the models “explode†if your models are too small. Once I scaled them up, they maintained their shape.)

As you can see from the attached file and Quicktime, SimCloth can simulate semi-rigid chains (they still flex a bit) attached to a flexible cloth. I’m not certain if the number of links in your application will result in calculation times that are unacceptable or not. It’s best to under-model the links to keep the calculations low, and then select 1 or 2 in the subdivisions box to smooth out the model for rendering.

We’re really using SimCloth for something it wasn’t intended for, so there will be compromises. But I think if you look at the example, you might be able to come up with a workable solution. The cloth is a simple poly model with some loops to attach to the chain links. (If you look at the “Links†example file that comes with SimCloth, you can see another chain simulation as well. The links deform slightly as well, but it isn’t that noticeable. I haven’t been able to make them completely rigid, but that makes sense for a cloth simulator.)

I hope this gets you going in the general direction that will solve your question. Chip

FOR VGD.zip

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