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Falling silk cloth
Posted: 20 August 2014 12:34 AM   [ Ignore ]  
Total Posts:  11
Joined  2012-03-08

I hope Dr. Sassi or anyone else can help me on this.

I’ve been trying to create a falling silk cloth like this one https://vimeo.com/56919800 ( 00:07-00:10)

But i just cant get that wavy silk feel while it drops.

Here are the basic settings that i use:
1. Stiffness :10%
2. Flexion & rubber: 100%

3. Gravity : 1 with Wind Y : -1.5 ( just to get the turbulence going)
4.Wind strength : 3
5.Global drag : 2%

But the drop that i had is just too rigid. Is there any steps/trick that I’m missing ?

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Posted: 20 August 2014 01:45 AM   [ Ignore ]   [ # 1 ]  
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Hi rio.matthew,

Very nice example. As I like to capture from time to time in high speed as well (which results in slow motion), I love to play the footage backwards then. I can help myself, but I think half the clips of this movie is slow-motion in reverse. I believe highly that we store information which impacts us with more detail, hence the “slo-mo” effect and its impact while using it for cinematography.

I would think that we get that slo-mo revers effect by setting the weight low and have some turbulence in the scene.

Please play the scene, and check if around frame 140 and the following the fabric works as you like to have it. I’m certain it is not perfectly what you are after, but perhaps you can tweak the parameter a little. I have self collision set to off, as it takes quite some “power” to have that as well. The plane has 50x50 segments.

If you cache the result—once you are happy and render only the best parts out, edit it as in the movie you referred to, with some reverse clips perhaps, it should work.

A subsurface object might help, the material is important and perhaps you use some Wind Objects (see image) with fall off (e.g., set to cylindrical, to shape your fabric dynamically!) It looks in the movie a little bit as a hair-blower was used to “sculpt” the fabric/silk)

Let me know how it goes, perhaps in the morning I have a fresher pair of eyes for it ;o)

All the best

Sassi

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CV2_r15_drs_14_CLsi_01.c4d.zip  (File Size: 418KB - Downloads: 208)
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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

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Posted: 20 August 2014 04:06 AM   [ Ignore ]   [ # 2 ]  
Total Posts:  11
Joined  2012-03-08

Wow this is amazing dr.sassi.

The reverse method totally works. I am redoing it from scratch but your file and tips is a really good starting point. I might also try backlight effect instead of subsurface to save render time smile.

Thank you very much for this, i’ll update this thread after i render

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Posted: 20 August 2014 11:50 AM   [ Ignore ]   [ # 3 ]  
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I’m glad I could share something that supported your ideas, rio.matthew!

Very nice to consider updating this thread with some results.

There is certainly a lot in the material and what will reflect/affect the fabric/silk.

My best wishes

Sassi


Image: the wind with falloff, to sculpt the silk dynamically :o)
https://www.amazon.com/clouddrive/share/gOmCpv1gwWlUGXwRNBkscRw92PGTtNeey92UrCIWEAc

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

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