Crumpled note

# 1 05-09-2012 , 08:40 AM

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Hi - I have to animate a crumpled dollar bill, rolling on to a scene.

What would be best way to do this do you think?

Thanks

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# 2 05-09-2012 , 09:47 AM

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Not to sure how you want it animated a bank note being moved by the wind or a rolled up note rolling along the ground............dave

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# 3 05-09-2012 , 10:19 AM

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Rolled up, I guess I could fake the blowing it in.

Im guessing a shape deformer? Because I'd like it to have different notes, so in different positions.

But I've never done shape deformers..

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# 4 05-09-2012 , 01:48 PM

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I found this with google and although the tutorial is for 3ds max the concepts should also work for maya and ncloth. I tried it out very quickly and got some encouraging results. You just need to fiddle with the cloth dynamics and the collider attributes.

Here is the max tut link: crumpled paper tutorial on Vimeo

Below is the simple maya setup and my initial results. Note that the currency note is evenly subdivided 20x10. In addition to changing the physics settings I would start by randomly tesselating the note.

The note is an ncloth object and the collider is a modified poly sphere. I just quickly played with a couple of the ncloth dynamics settings lowering some of the stiffness and bend resistance. But a lot more tinkering would be needed.

The collider settings are just the defaults.

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# 5 05-09-2012 , 10:06 PM

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I would say the ncloth method works pretty darn well. I just placed a fast foe dollar bill texture on the ncloth plane and played with the dynamics values of the bill and the physics attributes of the collider (mainly I added a force field pushing the bill from the sides).

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# 6 05-09-2012 , 10:24 PM

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hey that's funny, i know matt chandler. I've worked with him before.
looks good rick.

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# 7 05-09-2012 , 10:39 PM

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yeah he has a couple tuts worth watching even though they are max most of the techniques transfer 1-to-1.

I am certainly no dynamics guy so the results above were from only about 10 minutes of tinkering with the dynamics attributes. Someone with more knowledge and time could get even better results. But for about 15 minutes of tinkering I think they came out pretty good.

Here is some more of Matt's work it's a project for the discovery channel..

Making of SCI - Collider on Vimeo

"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675

Last edited by ctbram; 05-09-2012 at 11:09 PM.

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# 8 06-09-2012 , 10:49 AM

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That looks excellent, I thought of the ncloth, but before I found it difficult to get a stiffness in ncloth. It always seemed to be soft, could be my scaling of the scene though Im not sure.

I'll try that at some stage, in the mean time I cheated - photographed a stop motion!

looks alright.

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# 9 06-09-2012 , 12:30 PM

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That is interesting as I found the trick was getting the note to relax enough. It was overly stiff. I'd like to say I found the perfect settings but to be honest I kind of randomly adjusted the attributes that made the most sense compression resistance, bend resistance, restitution angle and restitution tension and then added a force field to the collector pushing the note away from the sides until I got decent results.

I think it could be improved on by randomly tessellating the note. You'd get a bit more natural looking creases but unless you are shooting right up on the crumpled bill it looks pretty convincing.

"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675

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# 10 06-09-2012 , 02:34 PM

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I normally work of the preset then play with the setting............dave

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# 11 06-09-2012 , 06:05 PM

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I found this to be a pretty great resource for all the confusing nCloth settings
https://www.joelstutz.com/nCloth.html

-stwert

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# 12 07-09-2012 , 08:40 AM

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The confusing thing for me with ncloth was scale, the way you can change the scene scale completely changes the outcome of your settings. So knowing if you've chosen the right scale is a mystery to me.

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Crumpled note

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