Cloth Constraints not working - can't paint or select

Hi @MelvMay
After updating to 2018.4.4 cloth seems to have screwed up. I noticed my physics cloth objects were flying all over the place, after closer inspection it appears the cloth constraints were missing.

Problem I have now is I can't paint anything.. the latest version of 2018 seems to have done something to cloth.

Attached is a screenshot showing the issue

Anyone have tips ?

*UPDATE1*
I ended up deleting my entire cloth and started from scratch, after that I was able to get the cloth constraints to show up.... So yea.. Just delete your old work and restart. That worked for me.

*UPDATE2*
If I try to attach this new cloth to my character, the transform coordinates of the character completely offsets the cloth "Bounds", moving the cloth object into some other space.. This didn't happen to me before updating to 2018.4.4 .. so beware guys.

I tried to parent this object to other parts of the body, even not make it a child of the character game object. Nothing worked, the bounds just inherit transform values based off something. I'm not sure .. sucks that cloth is broken.

 

Ok got it thanks!

I ended up copying a cloth gameobject that WAS working and replaced the wonky ones.. it seems ok for now? But it seems like a really hacky way to do it ... hopefully someone at Unity is still working on the cloth systems?

 

Great to hear thank you. Looking forward to the updates from @SeanParkinson !

 

Hi @SeanParkinson cc @MelvMay

I'm also running into this weird problem with the cloth disappearing. Please check out the clip below with settings. Do you know what's causing this?

I wasn't having this problem prior to updating to 2018.4.5f1

Thanks

 

Haha ok sorry. I won't CC you anymore

 

We had the same issue in 2018.4.4 where we couldn't paint cloth vertices - selection seemed to work though.

We fixed it by writing a script that recreated the hidden collider mesh - baked it from the SkinnedMeshRenderer. It seems that somehow the collider was in another part of the scene, so the raycasting for painting didn't work on it.

I see in Unity 2019 this issue is solved - they've changed how the cloth collider/painting works and it's a lot better. Cloth sim seems slower in 2019 though, so we're still on 2018.4.4 for now.

We also wrote a script to allow you to set the size of the spheres rendered for constraint painting as in our case they were way too big and there was no option to change this size. (Reflection FTW).

Hope this helps solve it.

 

Hi Sean,

Thanks for getting back to us on it.

I also seem to have run into some performance spikes with the physics cloth. Please find an attached screenshot.

I'll do more tests to see how I can recreate it.

 

@SeanParkinson

Good evening. I am using Unity 2018.4.6f1 and have a similar problem. When using SMR with Cloth, Bounds are somewhere in another dimension.
Example: https://monosnap.com/file/OKVLA8AtWs9bUrIhq3b5bBbWCpvXE7
(White dot that you can see in the bottom middle are Bounds)

This is what happens to Bounds: https://monosnap.com/file/gBYggKAZhDH3VAjcAhyovUMdc4xJWu

Worked fine in Unity 2017 (a lot of different versions, last one was 2017.4.29f1)

 

Got it. Thought that it was already released

 

@SeanParkinson this is awesome! Thanks for supporting the cloth physics! Can't wait to update and test it out! Hope it solves my flickering cloth issue too

 

Updated to Unity 2018.4.7f1. Issue is still there. Hope it will be fixed in next version.

 

Still not fixed and I can't even properly edit the constraints... They just disappear when I look from the Z-axis (Version 2019.2.4f1)

 

I'm also experiencing issues with Cloth in 2019.2.4f1

https://forum.unity.com/threads/cloth-ar-unity-2019-2-4f1-broke-cloth.742856/

 

still got huge issues also in 2019.3.0b3 (either really slow performance, or cloth looks completely destroyed).
Here it says it's being fixed in 2019.3: https://issuetracker.unity3d.com/is...cted-by-high-external-force-when-in-play-mode
I hope this does not mean that in 2019.3.0b3 the fix should already be included...

Edit: maybe to add to this: when I take a prefab from earlier version with cloth component, performance is okay, but cloth is distorted big time. if I recreate cloth, performance goes to 1fps max, and still cloth gets destroyed even heavier. I did not find any way to use cloth at all since 2019.2

 

@M0ntem @unity_V16sPb0I8SVOuw @unity_n2FvEnfvq2vehA @CliveLewis

Seems like cloth bugs are a tough one to solve. Thankfully Sean's looking into it.

Hi @SeanParkinson

Thanks for addressing the bounds issue. Could you please share which version of 2018? I'm on 2018.4.6f1 but still am having the cloth problems.

I made a few videos showing the problems, please find them here:
https://forum.unity.com/threads/cloth-questions-possible-bugs.716663/#post-4918949

If you still need a repo, I can make a separate project for you.

Thanks for the help!

 

Does anyone know what version of Unity was last to include a working cloth system? I'm encountering these issues in various version of 2018 and 2019 :-/

 

@ryannelson Upgrading from 2019.1.14 to 2019.2.5 (and breaking) brought me here, so from my experience at least, 2019.1.14 has functional cloth simulation.

For us, upgrading to 2019.2 and the new PhysX 4.x cloth is nonfunctional. It reorders all of the constraints, and attempting to repaint them (or paint new ones on a new mesh) triggers the issues others have mentioned: disappearing constraint nodes, bounds problems, etc.

 

There's a continued thread here as well if you'd like to follow.

https://forum.unity.com/threads/cloth-questions-possible-bugs.716663/#post-4918949

 

Oh dear, I'm on 2018.4.9f1, and hoping to stay with it.

But I can't paint any cloth constraints. And it's important to my project to have working cloth sim.

Is there a proper fix for this?

 

I found that I could apply Max Distance to the cloth points by using the Select interface, instead of the Paint interface.

I pressed Select, then selected different verts, then clicked the Max Distance checkbox with a number in the Max Distance field.

That seemed to apply the weights.

 

Yup!

I've attached a script that we came up that will repair the cloth so that it can be painted on again.

Just include this script in a /Editor folder and then the RenderHeads menu should appear where you can select "Cloth/Fix Collider"

Hope that helps

 

@SeanParkinson might want to have this script too?

 

hi @SeanParkinson

Thanks so much for fixing the cloth in 2018.4!!

But I have some bad news ..

I just updated to 2019.2.11f1 and the cloth is exploding .
Sorry for the trouble.. You're probably buried under work. Just wanted to let you know.

 

Hi

I added script in Editor folder, restart unity but RenderHeads menu didn't appeared. I'm using unity2019.2.9f1.

 

Try changing your Editor layout back to default - it worked for me.

 

Still having this problem, switching back to default did nothing.

 

At first I thought this bug had gotten me too... It's been a while since I had interacted with the cloth component, as there had always been bugs with it. So I was wondering why my cloth constraints toolbox suddenly didn't appear in the scene view so I could paint verts... Eventually I realized the "Gizmos" button thingy should be grayed-out in your scene view toolbar... So yeah, backwards and unintuitive is still a thing ... D:

But guess what?? -- This bug DID still get me! -- I just had to be some distance from the scene's origin (not a lot though). Then my brush seemed to be snapping to some invisible grid (even though grid snap was NOT enabled), and as a result, I still couldn't paint my constraints! Go me!!

@SeanParkinson

This tool needs some tender loving care -- Please help.

---


EDIT: Looks like this bug (and others!) are still here in 2019.3.0f6 as well as 2019.3.1

EDIT 2: Apparently the UI is just generally broken (and always has been, since before 2016!)

EDIT 3:
Now the bounding box gets broken when you add the cloth component to a submesh, which was causing MANY (but not ALL) of my hair-pulling UI issues. I found it requires "Update When Offscreen" to be enabled in the Skinned Mesh Renderer in order for the UI to simply function in the editor. This has never been fixed.

Beyond this, in 2019.3.1 (and 2019.3.0f6), when starting the scene, verts just go nuts and are stretched to the size of the import model and not to the final size Unity picks for the model (breaking the tethers and the whole simulation simultaneously), and as such, the simulation is just bonkers. Am I wrong for thinking I could finally edit cloth in 2019.3??

EDIT 4:

I have just one question:

Why is cloth still just a huge raging garbage-fire???

 

Problem is still here 19.3.6f1 and this is really unprofessional.

Not sure what Unity is doing, but they better sort things out because it is turning to a pile of "sometimes working" garbage. Cloth is a very basic and essential system, you can't be talking about new physics systems and have such issues in such basic components. I would be ashamed if this component in this condition was my responsibility.

 

The sad thing is, it doesn't seem like it is _anyone's_ responsibility.

The fact that there's no DOTS version of this even hinted at is proof enough for that, but someone from Unity has officially gone on the record to say that a DOTS version is not even being looked at. When I pressed them, nobody had anything further to say about it. :/

Cloth is just a flaming garbage fire -- and it doesn't look to be improved anytime soon without someone besides me making a stink over it.

 

We just tried moving a project from 2018.2.3f1 to 2019.3.3f1 and also 2019.3.7f1 and our cloth bounds gets all messed when you hit play.

@SeanParkinson Would you be able to give this thread an update on when we might see base functionality restored?

 

For me if I try the cloth component on simple geometry such as the Unity plane then it works ok. The problems appear on skinned meshes, such as character clothing or armor. Then the bounds get messed up etc., the usual stuff. However, repeatly clicking the "edit cloth" (or whatever is called, from the inspector) then deselecting object, then clicking again it will eventually work as expected-ish.

I say -ish because even then it's kinda clunky to paint cloth vertices, e.g. mesh disappears/reappears etc. But at least I can work it out.

I'm using Blender for 3D stuff.

But seriously, Unity, fix the damn cloth once and for all. This has been an issue for ages and is getting ridiculous.

 

https://issuetracker.unity3d.com/issues/parts-of-cloth-mesh-disappear-when-entering-playmode?page=2

Says fixed in 2020.1.0a19 - nope still broken in 2020.1b3

 

Yes, seems they fixed a bunch of stuff, but unfortunately those fixes seem to only work for static meshes, not skinned ones....

 

Seems like a good bug report to get that nice raytracing graphics card!

They'll just post it as "fixed" if it has to do with cloth -- and BAM! -- you're in the running!

 

I'm trying out 2020.1.0b14

And when clicking edit constraints the tool nor the weight point particles show up, there's only a volume.
Tried everything, looked all over the net, forums, and YouTube... am I missing something?

 

at least in 2019.4 there is a bug where you need to open paint tool, then select another GameObject, then go back. to GO with cloth, and then again open paint tool.

 

This is in 2019.3 too -- all versions. D:

 

Please can you explain the workaround cloth bug? So I can make it work. Using 2019.3 and experiencing same issue. Can't see vertex to be painted. Thanks

 

All I can remember is that you have to click on one mesh part, then back on another and something to do with your camera zoom affects it too.

Trust me -- this is wasting your time. Your cloth is broken and will never work. It doesn't appear that anybody is assigned to Cloth at the moment. You should probably buy Magica Cloth on the Asset Store -- it's on sale and looks pretty decent.

 

Actually cloth works now again in latest LTS 2019.4

 

Wow. Did not know that.
I fought with it up to 2019.3 and gave up. Glad to know there's at least one version of it that it's functional on.

 

Another workaround is to switch your layout to default then edit your cloth and then switch back to your layout. It worked for me. Hope it helps.

 

It's crazy that this bug has not been fixed since so much time. I always need to revert to default layout to make the collider and cloth component editor to work . I wonder when Unity will do something. I think I do that since more than 2 years