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Technical Discussion » Point groups not showing in alembic in C4d


atracksler: 41 posts; Offline

April 7, 2022 12:32:31

Is there a node for that?

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Technical Discussion » Point groups not showing in alembic in C4d


atracksler: 41 posts; Offline

April 7, 2022 11:06:59

I have a cloth sim, that has @10 pieces of cloth and each is assigned a point group.

I can see them throughout the sim, and I have everything checked for the alembic export.

When I brink it into C4d for lighting and rendering, I see pretty much everything but the point groups (clothID1, clothID2, etc...)

Any ideas about what I'm doing wrong?

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Houdini Indie and Apprentice » HDA editing and resaving?


atracksler: 41 posts; Offline

Oct. 15, 2019 23:41:13

I have a houdini file that I made a digital asset from.

I made a mistake in the file before I saved it as an asset. I have fixed that (adding a node at the end to convert it to polygons), but cant seem to re-save it… How can I re-save the HDA?

I unlocked it and updated it, but that didnt seem to update the HDA.

Thanks in advance.
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Houdini Lounge » Group Expression help


atracksler: 41 posts; Offline

Oct. 9, 2019 14:31:58

Thanks so much! looks like VEX is my next lesson

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Houdini Lounge » Group Expression help


atracksler: 41 posts; Offline

Oct. 9, 2019 08:20:22

Hi guys,

I'm doing Rohan's Rocketship tutorial, and so far been able to figure out some of the depreciated nodes. I'm having some trouble with a group node.

He is using a group node that is set to group by expression. The expression is

$TY>0

I know I should be using the new group expression node, but am unsure of the vexpression I should be using.

Thanks in advance.

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Technical Discussion » Set initial state in Vellum cloth 17.5


atracksler: 41 posts; Offline

Sept. 30, 2019 11:42:54

I'm using a vellum constraints cloth into a vellum solver, and there is no freeze at frame…

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Technical Discussion » Set initial state in Vellum cloth 17.5


atracksler: 41 posts; Offline

Sept. 27, 2019 10:44:17

Coming to H from C4d and XP.

Is there a way to set the initial state of a vellum cloth sim? So instead of waiting 20 frames for it to drape over a model, it just “starts draped”?

Or am I better off just simming the whole thing….

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Houdini Lounge » Vellum cloth sim with thread pulling cloth together


atracksler: 41 posts; Offline

March 15, 2019 14:24:01

Thanks. Checking it out now. The GJ tenor sounds like a cool thing. I love gypsy and tenor….. If only I won the lottery, then I could do all my geeky hobbies all day long…..

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Houdini Lounge » Vellum cloth sim with thread pulling cloth together


atracksler: 41 posts; Offline

March 14, 2019 17:32:16

We can't be the only two mando-dini-ers. I have a Hamlett mando, and a banjo (for shame… but it's a tenor)

Would love to see your setup.

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Houdini Lounge » Vellum cloth sim with thread pulling cloth together


atracksler: 41 posts; Offline

March 13, 2019 14:57:59

It was something in my Houdini.env file.

I'm using a 1080, so thats all good.

Just wrapping my hear around making the thread….. then the cloth… then putting it together…..

Nice e-mando Dave.

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Houdini Lounge » Vellum cloth sim with thread pulling cloth together


atracksler: 41 posts; Offline

March 12, 2019 17:55:21

I'm working on getting the strings to work (my first forays into Vellum).

Unfortunately, I'm having a huge Houdini crash issue which isn't letting me open H with my Nvidia card.

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Houdini Lounge » Vellum cloth sim with thread pulling cloth together


atracksler: 41 posts; Offline

March 10, 2019 07:54:16

Finally found them….

How are the ring constraints made?

https://www.instagram.com/marcelpiekarski/p/BrmlFLqlOyD/?utm_source=ig_share_sheet&igshid=1fhdw862lqbja [www.instagram.com]

https://www.instagram.com/marcelpiekarski/p/BrpJ7fhlOiL/?utm_source=ig_share_sheet&igshid=7wcot7o4agm6 [www.instagram.com]

https://www.instagram.com/marcelpiekarski/p/BsDwSz7nbmo/?utm_source=ig_share_sheet&igshid=u8q63687i9jo [www.instagram.com]

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Houdini Lounge » Vellum cloth sim with thread pulling cloth together


atracksler: 41 posts; Offline

March 5, 2019 10:09:19

A few months ago someone had posted some vellum cloth sims with a black cloth and thread constraints that pulled them together in a sewing like manner…. anyone remember these?

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Houdini Indie and Apprentice » H17 .0.416 Apprentice on Mac – stable?


atracksler: 41 posts; Offline

Jan. 4, 2019 08:48:38

Working fine for me on 2015 MBP

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Houdini Indie and Apprentice » Fluid Source / emit particle fluid help in R17


atracksler: 41 posts; Offline

Dec. 31, 2018 18:04:32

Going through a tutorial for Optical Flow:

At 19:17, an Emit Particle Fluid is added to the sim.

When I add it in R17, I dont see the fluid source (create_surface_volume) or the merge_surface_volume

Screenshot attached, my H is on the Left, tutorial on the right.

How woould I go about doing this in R17? Ive been pretty stumped….

Thanks so much in advance.
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Houdini Indie and Apprentice » Fluid sim, moved floor, now not colliding.


atracksler: 41 posts; Offline

Nov. 21, 2018 10:56:41

I ended up deleting the ground grid and making a new one and making that a collider, in case anyone stumbles across this in the future.

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Houdini Indie and Apprentice » Fluid sim, moved floor, now not colliding.


atracksler: 41 posts; Offline

Nov. 18, 2018 16:09:43

I'm doing the particle fluid tutorial from Maxdepth.

I had it working well, but moved the floor collider object, and now the fluid just passes through the floor, is there something I have to reset? I'm not sure why its not working anymore.

I tried saving and re-opening the file, as well as restarting H.

I also tried clicking the refresh button in the flip solver.

Thanks a million in advance.

File is attached.

Image Not Found

Edited by atracksler - Nov. 18, 2018 16:10:14

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Houdini Indie and Apprentice » How to make a fluid pour less jaggy?


atracksler: 41 posts; Offline

Nov. 1, 2018 17:32:37

I have an emitter that is emitting a liquid, but it is really jaggy, when it collides, it is nice and smooth. What can I do to smooth it out in the pre collision part?

MP4 attached:

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Houdini Indie and Apprentice » Fluid Sim works if I animate the emitter, but when I animate the collider, it fails.


atracksler: 41 posts; Offline

Oct. 26, 2018 18:12:23

Thanks. I’ll try that Monday.

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Houdini Indie and Apprentice » Fluid Sim works if I animate the emitter, but when I animate the collider, it fails.


atracksler: 41 posts; Offline

Oct. 26, 2018 16:50:20

I'm working on this fluid sim. Hey - its my second houdini project - and my first with no tutorial

Its a fluid that gets poured across a surface to illustrate a molding process.

So I have an emitter emitting fluid and a collider surface.

I originally had the emitter animating, but I think it would be better if the collider moved.

When I was animating the emitter, it worked.

When I removed the animation from the emitter and animated the collider, it stopped working.

I know its something easy (OK, I hope its something easy….), but I can't figure it out.

Thanks in advance for anyone who can point me in the right direction…..

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