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




Subject: Some Questions


creationz8 ( ) posted Fri, 03 January 2020 at 5:08 AM · edited Sat, 23 November 2024 at 10:17 AM

First I am sorry about all the questions. The software is cool but I have some questions about issues with the software: I am using a Titan RTX to run the cloth sims but I get a message (different language) 'not enough memory'. Do I clear the memory every time I run a new sim? How do I clear the memory and scenes from the software? Imported animation does not run sometimes or an previous animation loads instead. Why? Cloth does not simulate and the software hangs. Cloth sometimes "fly away" or disappear. Why?


VirtualWorldDynamics ( ) posted Fri, 03 January 2020 at 5:17 PM

Hello creationz8,

I also will ask you a question. Can you do the simulations using the GPU with your Titan RTX graphic card?

About the "Memory error", this message appears when too much springs have been generated. Did you use the assistants to create your simulations. Can you tell the character and the cloth/hair you are working on?

About the previous recorded animation, it is a difficult problem to resolve. Currently, I prefer to keep the old recorded animation for the collision actor. When a new animation is imported, the program searchs the number of frames and the number of vertices of the character. If both are the sames, the program considers the animation is the same and it plays the animation in the scene viewer. If you want to import the same character with an animation with the same length but different from the previous one, you have to check the box "New animation".

About your simulation issues, I need more informations to help you. Could you give me informations on the scene you want to simulate.

About "fly away" effect, this always appears when the cloth/hair penetrates too much the collision actor. If this is at the start of the simulation, you can uncheck the inertia during a few steps and check it again after. I will explain all these methods in the coming tutorials.

I hope my explanations will help you.

Have a great day.

  Gérald

____________________________________________

Follow me on Twitter : @VWDynamics

Watch demo videos on Youtube


creationz8 ( ) posted Sat, 04 January 2020 at 4:33 AM

Can you do the simulations using the GPU with your Titan RTX graphic card? Yes I can. Did you use the assistants to create your simulations. Can you tell the character and the cloth/hair you are working on? I am not too familiar with the software as yet so I do not understand this question. Sorry. I did check the 'new animation' box and that worked. Thank you. I attached some pictures showing the steps in order before the simulation. However, this time, I did not get to simulate because of 'insufficient memory'. Please let me know what I am doing wrong. 1.JPG2.JPG3.JPG4.JPG


zanth77 ( ) posted Sat, 04 January 2020 at 6:14 AM

Looks like it crashed when importing the cloth. Next time try this to drastically reduce memory footprint:

  • Make sure mesh resolution is set to Base in Daz parameters.
  • Run VWD. Utilities - delete exchange files. Import collision item.
  • Select Cloth for the kimono item.
  • Check Spring Reduction
  • Uncheck Self Collision
  • Uncheck Use Vertices Neighborhood (which can be memory intensive).
  • Make sure Use Vert Extensions is checked.
  • Finish with cloth import.

Sometimes you can just set to Base resolution, and that's enough. Vertex neighborhood is nice if the object has a lot of separate parts since it keeps them together (hopefully the kimono doesn't have separate parts or they'll fall down when using extension only), but it's heavy on spring generation.


creationz8 ( ) posted Sat, 04 January 2020 at 1:15 PM

Your suggestions really helped. The simulation completed without memory issues. I just have to fine-tune the results. Thank you.


VirtualWorldDynamics ( ) posted Sun, 05 January 2020 at 4:36 PM

Hello creationz8,

When you import a cloth or a hair, you can check the "With assistants" box. This option will help you to import correctly your dynamic actor. If the cloth is composed of several parts, you can tied these parts using the rigid vertices.

Please, can you tell me the exact name of the kimono you use, if I have it I can send you good settings for the simulation.

zanth77: thank you for your reply. The importation without assistants is more powerful but more difficult to adjust. Personally, I often start with the assistant and then, I adjust the simulation settings using the "Simulation history". This method allows to have a good first test before to apply the best settings.

____________________________________________

Follow me on Twitter : @VWDynamics

Watch demo videos on Youtube


creationz8 ( ) posted Sun, 05 January 2020 at 5:11 PM

The software has worked better after all of the help. I look forward to tutorials and more help from here. Keep up the good work. Thank you.


creationz8 ( ) posted Sun, 05 January 2020 at 7:42 PM · edited Sun, 05 January 2020 at 7:43 PM

This is what I used: Daz 3D dForce Kimono for Genesis 8 Female SKU:50947


zanth77 ( ) posted Mon, 06 January 2020 at 5:58 AM

The 'With Assistants' feature sounds interesting. I'm still using v1 of the software so I don't have it yet. I assume it just puts defaults into dynamic parameters or something. Looking forward to tutorials so I can see it in action to get a better understanding of what exactly it does.


VirtualWorldDynamics ( ) posted Tue, 07 January 2020 at 4:18 PM

@creationz8: I will try to do a tutorial using this kind of outfit. Visibly, you didn't use the assistants, you can try to use the cloth assistant when you import the kimono and apply a rigid stiffening on the vertices of the belt. Please, tell if this solution resolves your issue.

@zanth77: Please, look at your sitemail.

____________________________________________

Follow me on Twitter : @VWDynamics

Watch demo videos on Youtube


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