Ncloth slow motion?

[Jbocko]

You could always render subframes.

[Wick3dParticle]

Hey Joie,

Cache your Ncloth. Then when you are done, select the cloth object and open the Trax editor. You should see your cloth cache loaded up there. Now you can edit it, scale it, modify the cache frame range or shift it in time.


Have fun!

~Ilan

[joie]

Even if I do what you say (sub-frames or scale the animation), ncloth only computes full frames (1, 2, 3, 4, 5 and so on), and the interpolation between them is linear, so the motion of the cloth is very strange.

Is there a way to make ncloth to compute sub-frames?.

[Wick3dParticle]

Even if I do what you say (sub-frames or scale the animation), ncloth only computes full frames (1, 2, 3, 4, 5 and so on), and the interpolation between them is linear, so the motion of the cloth is very strange.

Is there a way to make ncloth to compute sub-frames?.


hmmm.... did you try what I suggested, or are you just sure that what I said won't work?

~Ilan

[joie]

I've done the sub-frame thing, not the trax one, now it's midnight here, so I'll try it tomorrow.

Thank's for the info.

[Aikiman]

Even if I do what you say (sub-frames or scale the animation), ncloth only computes full frames (1, 2, 3, 4, 5 and so on), and the interpolation between them is linear, so the motion of the cloth is very strange.

Is there a way to make ncloth to compute sub-frames?.

Cache it out in sub-frames I believe jbocko means, but Ilan is right, you can use the trax editor to change the timing of your cache. I think that is for 2009 and above??? If you dont have 2009 you can retime your cache instead.

EDIT: 2008 and above, you can also scale it at user level on the cache node itself in the attribute editor > Scale.

[joie]

Yes, with Trax you can scale the cache time, but it's the same as rendering by 0.1 frames for example..., the interpolation between frames is linear, so the flow of the animation is not smooth at all (it's like when you make a progressive blendshape, the interpolation is linear and the same error appears).

[Aikiman]

Well if you gunna slow your animation down you dont animate with less frames per second you animate with more frames.

[joie]

Mmmm, how I animate something in slowmotion with more frames?, I don't get it.

[Aikiman]

Lets say you animate at 72fps rather than 24fps for 1 seconds worth of animtion. That means you have recorded 3 time steps per frame as opposed to 1 for the same animation for that one second.

Now lets say you want to slow the animation down by having it take 3 seconds instead of 1 second for example.

If you have 3 times as many frames for the same animation then you will have enough frames for the 3 seconds which will bring you back to 24fps for the 3 seconds as opposed to trying to stretch the 24 frames over the 3 seconds.

Hope that makes sense.

So its the same as caching out your animtion with subsampling. If you subsample your nCloth cache lets say 0.2 every frame, you are getting 5 samples every time step, so if you go to slow it down by extending the entire timeline, you ought to have infomation to help you achieve a nice smooth interpolation.

[joie]

I understand that.

But, how I make the cloth behave in slowmotion?, If I work at 72 fps (for example), my simulation will behave faster, and I'd need it to behave like the 25 fps simulation but, you know, at 72 fps.

[Aikiman]

The best way is to retime your cache and you do that by using the trax editor!

If you want to use a more unpredictable way, then increase your space scale on the nucleus node so that your little beach ball will now seem like a planet.

[H2]

Think you can use the Time scale parameter in the nucleus node to speed up or slow down simulations.

[joie]

I think the same, the time scale parameter is the way to go, but it goes mad for some reason..., read the help didn't help me either..., trial and error is my best friend right now.

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