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Virtual World Dynamics F.A.Q (Last Updated: 2024 Nov 05 5:09 pm)




Subject: Need more tutorials for casual clothes like jeans, tops, office suits


Hiemille ( ) posted Tue, 24 October 2017 at 4:59 PM · edited Wed, 06 November 2024 at 6:41 AM

Hello, VWD! First of all, great thanks for your unique simulator, which I can appreciate even as demo. So far it's a single cloth solver which works with unwelded conforming clothes, but it lacks information and tips about better methods to work with casual, tight clothing like jeans, tight tops, coats and jackets and especially office suits, which are abound on the DazPoser market and sometimes need simulating too. I mean items like those (as possible examples) - H&C Business Suit A for Genesis 3 Male(s) (https://www.daz3d.com/h-c-business-suit-a-for-genesis-3-male-s), Leather Jacket for Genesis (https://www.daz3d.com/leather-jacket-for-genesis), X-Fashion Leather Jacket for Genesis 3 Female(s) and all kinds of sexy tops and jeanswear like Let's Go Outfit for Genesis 3 Female(s) (https://www.daz3d.com/catalog/product/view/id/36435-DAZ) and hundreds of similar pieces of clothing. All such things are often made of unwelded parts like buttons, rivets etc, and often behave weirdly without proper settings in VWD. Different materials need different gradeds of rigidyfying, different settings of collision etc. It would be cool if you made some more tutorials, video or PDF, about setting up such kinds clothing in VWD, about vertices interactons, rigidyfying, inflating buttons and other elements and other useful tricks. Newer versions of your program have many improvements, but hard to guess how to use all these improvements in every paerticular case. So I guess that a handful of additional information would come handy to all users. Thank you in advance for any possible help.


Hiemille ( ) posted Tue, 24 October 2017 at 5:08 PM

Oh, I forgot to write in the previous comment - when I mean weird behaviour, I mean that without proper settings hard leather behave like soft cloth and tight tops became loose and hang freely, so the main information we need is how to make the fabric harder and how to keep tight items on the bodyshape as if conforming. More often it is necessary when converting clothes from V4 and other older figures to newer Genesis 238. Which are possible proper settings for denim, leather, elastic lycra, and thick fabrics like coat wool? I understand all meshes are different, but some common recipes can help.


VirtualWorldDynamics ( ) posted Thu, 26 October 2017 at 12:10 PM

Hello Hiemille,

You are right, This problem has been enumerated often in the forum.

I can explain what seems to me to be the way to find the best settings for a cloth.

There are two stiffening methods,

  • the method by extension that follows the edges of the mesh.
  • the method by neighborhood that uses a circle to select the vertices to link by a spring.

For me, the method by extension defines the global stiffness of the clothe. It is it which make the clothe looks like leather or silk. The method by neighborhood allows to link free parts (button, belt) on the clothe.

You can use the method by extension, alone, only for dynamic clothes. The method by neighborhood can work for all clothes but it it can generate a lot of springs if the mesh is small.I want t

The best way, for complex clothes is to make some tests using only the stiffening by extension to define the global behavior of the clothe. Then, if some parts of the clothe fall on the ground, you can apply a stiffening by neighborhood on these parts. For buttons, for example, you can select the vertices using the the selection by material or select one vertex for each button and press the "Elements" button. Then you apply a stiffening by neighborhood on the vertices using a distance that allows to create a link with the main part of the cloth.

I hope these small explanations will be helpful to you and to other users.

I want to open a new thread because I would like to make a tool which would allow to make a dynamic clothe from a conforming clothe. I will show some results on this subject. I don't like the meshes generated in many softwares (Quads or Delaunay triangles). I would like to show the a structured triangular mesh has a highly better behaviour. For cloth simulation, the triangles are better because it is the only shape that allows to generate regular elements. The Delaunay method generates irregular triangles because they are generated using a random spacial generation of dots. I prefer to use a frontal generation that generates equilateral triangles, all with the same size. Cette methode would allow to create precise presets.

Have a great day.

   Gérald

____________________________________________

Follow me on Twitter : @VWDynamics

Watch demo videos on Youtube


Hiemille ( ) posted Thu, 26 October 2017 at 1:32 PM

Thank you for explanation, Gerald, but I have to clear out some important details. I've read both your manuals, old and new, and as I learned, the overall stiffness for a cloth item is set in **Dynamic Parameters ** tab, where I can set up both Softness and Stretch before generating a dynamic actor. For hard fabrics like leather I should set up low values for Softness and Stretch, about 0,001. Sometimes it worked for me for hardening conforming corsages. But what about elastic cloth like lycra, jersey, stretch denim, which must be stretchy, but fit close to the body? I tried with several tops and swimwear with various random settings, but did not managed to prevent them from overstretching and loosening. What are best balance between Stretch and Softness values in such cases?

Another question - in the new manual I found your example with С19 Jeans from Ali, in the chapter about Inflating, but couldn't recreate the settings because of confusing values. You wrote that for these jeans one should set Rigidness in Vertices Groups for cloth parts with such values - buttons with rigidness of 5, cloth with rigidness of 1 and pockets with rigidness = 2. But in this tab I see only decimal values for Softness (0,1 and so on) and whole values for Count. VWD- Rigidyfy.jpg

Where should I set up these recommended values, like in these Ali's jeans? I guess they would fit the most jeanswear in common with minimal changes. And what about this new Inflation option - as I understood, small values like 25 are good for small elements like buttons and rivets, and for larger and heavier elements like big metal buckles I should set up larger values? It makes sense especially in fantasy style outfits which I prefer to call "Skirtwraps" with a lot of fantasy jeweled conforming elements and long flowing pieces of cloth. Possible examples are Zenobia for Genesis 3 Female(s) - https://www.daz3d.com/zenobia-for-genesis-3-female-s and Daemon Outfit for Genesis 3 Female(s) - https://www.daz3d.com/daemon-outfit-for-genesis-3-female-s. Clothes of this kind are abundant in DAZ and Poser market and hard to conform in complex poses. As you see, these fantasy dresses have many leather belts, metal and gem decorations, which must be properly stiffened and often inflated over the fabric. And fabric parts must behave naturally. For a beginner it's difficult to work out a fast strategy how to dynamize such complex clothes properly and efficiently. So I think a couple of additional chapters about such items would be handy in your future editions of the manual, or maybe videos on Youtube will serve well. I saw some strikingly realistic images in the local VWD gallery with simulated military and office jackets, street jeans and other stiff clothing. They lack only some tips how to achieve such realism, playing with setting. But I'm glad it's possible at last. Best regards, Hiemille.


VirtualWorldDynamics ( ) posted Sun, 29 October 2017 at 4:58 AM

Hello Hiemille,

I confess I didn't write the program for complex clothes like these you quoted. It is very difficult to mix clothe and metal without any interpenetrations.

It is important to remember the two values Softness and Stretch in the top of the dynamic tab, work only on the first level of the mesh ie, the triangles. These parameters have an influence only at this level. You can apply a global stiffening using the two stiffening methods in the Dynamic Tab. You can also apply a local (by vertices) stiffening using the two stiffening methods in the Vertices Tab.

I wrote the first manual, but it is a bit technical. The second manual has been written by WimVWD who made a great work. I will reread his manual to see the settings you told me. I will make some tests.

Have a great day.

  Gérald

____________________________________________

Follow me on Twitter : @VWDynamics

Watch demo videos on Youtube


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