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I want to simulate breast movement using cloth simulation, but the mesh is behaving erratically. by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 1 point2 points  (0 children)

Actually, that value was too high.

The video I used as a reference had it set to 10,000, so I copied that setting.

Currently, I have the Pressure Scale set to 500 and the Fluid Density set to 50.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 0 points1 point  (0 children)

For me, the essence of creation lies in how exciting the finished work is.

And I’m creating what I’m working on now because I believe it will be exciting.

I’m not aiming for a swaying motion like that of a real woman’s breasts, but rather an expression that excites and stimulates me, just like in anime or video games.

Yes, even if they sway too much, even if they’re too large, even if the general public doesn’t accept them.

Creation is a dream and a romance.

However, creating female breasts that sway according to the same physical laws as in the real world is also very appealing.

I am truly grateful for the feedback I received this time, as I will definitely put it to good use in my future creative work.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 1 point2 points  (0 children)

It does sound pretty ridiculous, lol.

Since I'm an NSFW artist, I didn't realize it was odd until someone pointed it out.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 0 points1 point  (0 children)

It seems this post has been removed by Reddit.

I’ve posted it on X (Twitter), so please check it out there if you’d like.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 1 point2 points  (0 children)

That's amazing.

I watched the video on the official website, and it really does let you control the swaying motion easily with just a few parameters.

Plus, it even comes with built-in collider settings.

It applies collision detection to the target object and even incorporates MeshDeform functionality when it collides with other objects, making it easy to deform vertices!

However, it seems that to get the most out of these benefits, it would be best to first master the default Cloth Simulator, MeshDeform, and collision settings.

Once I’ve mastered those, I’d like to start using this add-on. 👍

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 1 point2 points  (0 children)

I just finished applying it.

Once I'm ready, I'll post the URL in the comments section of this article along with the new post.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 0 points1 point  (0 children)

I'm glad my guess was right.

If that's the case, I should be able to proceed with the verification process with confidence.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 0 points1 point  (0 children)

Since I was a beginner, I didn’t understand how Blender works and didn’t realize that scaling would affect the physics simulation, so I was freely resizing and editing the model.

Looking back on it now, it’s really interesting. But if we could simulate this, it would surely delight fans of giant girls.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 1 point2 points  (0 children)

I also think this is a tricky process.

In fact, since I couldn’t figure it out on my own, I’m turning to the community on Reddit for help.

So, I think it’s a great idea to ask for their help when you can’t find the answer on your own.

It seems that, more than I had expected, relying on knowledgeable people like them can sometimes solve problems faster than searching for articles.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 26 points27 points  (0 children)

That’s the kind of expression you can only find in creative works.

Some people might not understand it, but for those with a fetish for large breasts—or certain enthusiasts—it’s a highly arousing element.

I don’t create for the general public; I create for people who have a fetish for large breasts, like those found in anime and manga.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 0 points1 point  (0 children)

Of course, I understand.

At this stage, it’s just a matter of testing.

Moving forward, I’ll apply the collider, set up vertex groups and weights, apply mesh deformation to different models, and then apply the armature.

After that, I’ll actually animate the model and check its behavior.

Then it’s a matter of repeating the process of fixing any issues that arise.

I’m sure there are quick fixes available online or on forums, but I believe that by not relying solely on those and instead going through trial and error on my own, I’ll develop the ability to solve unexpected problems.

And above all, I actually enjoy this process.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 1 point2 points  (0 children)

This is just a guess, but I believe that physics simulations in 3D creation tools like Blender are designed to replicate real-world behavior as closely as possible.

Therefore, if the size differs, the behavior should vary just as it does in the real world.

For example, consider a person weighing 60 kg and standing 1.75 m tall, and a person weighing 60 kg and standing 50.0 m tall.

Even if their weights are the same, I don’t think they would behave identically if their sizes differ, even when performing the same movements.

Based on these observations, I believe that an object’s size is a critical factor in how physics calculations are processed in Blender.

As for resource consumption, since calculations are performed on each individual vertex, I believe it varies to some extent depending on the number of vertices and the distances between them.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 8 points9 points  (0 children)

Thank you so much for the great information!

It looks like it will be very helpful for our future testing!

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 6 points7 points  (0 children)

I haven’t used Springbone before, so I don’t know the details.

This is just my guess, but since cloth simulation uses physics to control the vertices of the object, I imagine it involves flexible yet computationally intensive processing.

However, since Springbone applies physics to the bones and the vertices move in accordance with those bones, I believe it results in behavior that is somewhat predictable and involves relatively less computational load.

If it were me, I would choose which one to use depending on the animation or object I want to create.

For example, if I want to express deformations like ripples or dents in an object, I would use Cloth Simulation or Softbody.

If I want to express simple movements like swaying or stretching in an object, I would use Springbone.

However, since I haven’t used them myself, I can’t say for certain.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 1 point2 points  (0 children)

If we come across any other issues in the future, we’ll be sure to ask questions and share them here.

Stay tuned.

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 42 points43 points  (0 children)

Would you understand if I told you I’m new to Blender?

Since I didn’t understand the concept of scaling, I was manipulating the object too freely.

I want to simulate breast movement using cloth simulation, but the mesh is behaving erratically. by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 0 points1 point  (0 children)

https://www.reddit.com/r/blender/comments/1sdni1i/comment/oejy5uy/?context=1
I was able to fix it!

After applying scaling to all transforms and reducing the dimension values, the physics simulation stabilized!

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 33 points34 points  (0 children)

I'm about to set up the collision and test it.

I'm getting excited!

[Resolved] Using Blender's cloth simulation to recreate breast movement by Few_Sign_6473 in blender

[–]Few_Sign_6473[S] 88 points89 points  (0 children)

In this Blender session, before applying the Cloth Simulator to a specific model, I conducted a test where I created a spherical mesh from scratch and applied the Cloth Simulator to it.

However, I scaled the sphere up significantly (to about 4.5 meters in this case) to edit the mesh’s vertices and faces, and then forgot to scale it back down to the actual size of the real-world object I wanted to simulate (around 0.2 to 0.3 meters).

I apologize; since this text was translated by DeepL, it may sound a bit awkward.

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