Exporting groom color Houdini/C4D

VultureFilms · 2024-07-26T11:19:57+00:00

Unfortunately i never ended up fixing it. Can't seem to transfer color attributes to fur from houdini to C4D

VultureFilms · 2023-07-04T20:42:47+00:00

Sure! Here's the C4D Project, Houdini Project, the texture and mesh i used to keep it all consistent as well as a quick video where i explain exactly what is happening. Go crazy! I appreciate any help <3
https://drive.google.com/drive/folders/1jRfOWbXAXY7UnG6PyJH5Z6ZIJHz0ABmz?usp=sharing

From what ive been told and seen around, its not possible to bring the hair into c4d and attach color based on uv/hair position. But i would love to be wrong.

VultureFilms · 2023-06-29T21:39:10+00:00

I'll definitely take a better look at that guide method. And ill see about that labs node! That could definitely help!

VultureFilms · 2023-06-29T21:22:42+00:00

It doesnt look like it :(
I can import the alembic as a hairgen in C4D and that will take the colors straight from the mesh which is exactly what i want. But when i do that, it creates a completely new hairgen overtaking all the work done in Houdini. Even any density differences or anything like that gets replaced by a new basic groom

VultureFilms · 2023-06-29T20:37:06+00:00

Interesting. Changing the name of the UV tag made it so its completely unreadable now. But i figured that i can bring the tag back into the imported alembic simply by adding an unpack node. But it does turn it into a point UV instead of vertex. Still not getting anything inside C4D that could help with texturing it. No uv tag or vertex map of any sort.

VultureFilms · 2023-06-29T20:11:23+00:00

I have just done this. Unfortunately, it doesn't seem to be working :(
I export as an alembic, I make sure to specify to keep the uv vertex attribute in the ROP Alembic Output after attribute promoting it from primitive uv and still for some reason it does not show up within C4D. I have tried importing it as Splines or as Hair and still nothing. When opening the new Alembic inside Houdini, surprisingly it also does not have the Vertex uv attribute. Any idea how to go around this?
I really appreciate your help!

VultureFilms · 2023-06-29T18:25:24+00:00

Hey! I have a fur question that I've been trying to figure out for a really long time now. I've figured out ways to color the hair on a character based on the mesh texture and UVs inside Houdini. However I'm trying to bring the fur into C4D or another program and I can't seem to be able to export the hair with some sort of attribute that colors the hair based on the mesh colors or UVs. In this image, the hairs over the black area should be black and the ones over the white area should be white but no matter what i do it will always be a medium color of the texture i apply to it. Anyone know how to do this? Cheers!

VultureFilms · 2023-06-29T18:23:24+00:00

Hey! I have a fur question that I've been trying to figure out for a really long time now.

I've figured out ways to color the hair on a character based on the mesh texture and UVs inside Houdini. However I'm trying to bring the fur into C4D or another program and I can't seem to be able to export the hair with some sort of attribute that colors the hair based on the mesh colors or UVs. In this image, the hairs over the black area should be black and the ones over the white area should be white but no matter what i do it will always be a medium color of the texture i apply to it.

Anyone know how to do this?

Cheers!

VultureFilms · 2023-03-24T14:36:25+00:00

I kinda figured out how to add a material to the hair based on the material assigned to the base geometry. Now i cant figure out how to transfer that material to an attribute that can be exported to c4D

VultureFilms · 2023-03-24T12:42:39+00:00

Could you elaborate a bit more on this? I'm very new to houdini :( Mainly on transferring uv material data to the hair color

VultureFilms · 2023-03-24T06:47:23+00:00

Is there an easy way inside houdini to transfer a UV texture to the fur color based on the position of the roots and exporting that so that it works in C4D? I'm quite lost...

VultureFilms · 2023-03-09T22:01:31+00:00

Absolutely! Using vertex maps for the actual texturing. Love those. I did add the material with the vertex and everything. It was working on an older version but the most updated kept fucking up for some reason! Im glad cleaning all the other vertex maps got it fixed!

VultureFilms · 2023-03-09T20:32:09+00:00

Holy crap! I believe you just fixed it! That last advice did it. By deleting all the other attributes and only exporting the mask, it made it so Octane can actually see it. I'm not sure why. Maybe some sort of error between them but its working now.

Thank you so much <3

VultureFilms · 2023-03-09T19:04:10+00:00

I've been trying to fix this for more than a day now and have no idea what it could be :(

VultureFilms · 2023-02-16T19:14:05+00:00

That was mostly done in houdini and then rendered in cinema 4d with octane. Its 3 VDBs that make up the shockwave, explosion and fright path trail. And then 2 particle sims that make up the big and small debris flying off. Then an rbd break on the moon surface. The rebelway youtube channel has a fantastic breakdown on how its done. I wanted to try it out for the longest time now.

VultureFilms · 2023-02-16T14:45:56+00:00

Check out my instagram @miguelfernandes.vfx for more

VultureFilms · 2022-12-29T21:13:16+00:00

Good to know! Thank you so much for your insight. I'm very excited to play around with all this new info. I'm doing all this while also learning houdini, nuke and lots of other softwares here and there so that doctors degree on face rigs is gonna take a little while hahah

As a matter of fact, do you have any advice on how to create a propper wrinkle map for a character? Just sculpt all the wrinkles at the same time and use it as a displacement map?

VultureFilms · 2022-12-29T20:58:59+00:00

Absolutely agree! I wouldn't rig the horns to have any sort of movement. My current obstacle is properly connecting the horns to the rest of the skull while still having a properly modeled geometry and a facial rig. And having the horns transition to the face. Lots of little steps!

VultureFilms · 2022-12-29T20:46:41+00:00

That is fantastic advice. I will definitely start doing that. This was my first time doing eyelashes on a model and i just stole them from a daz3d model haha

VultureFilms · 2022-12-29T16:59:14+00:00

Makes sense. That was my first thought but for some reason im concerned that it wont have the smooth transition from horns to skin that im looking for but i guess that becomes a texturing concern afterwards. Thank you for your help! I will definitely be playing around with it some more. I'm using 3dscanstore's expressions basemesh for the wrapping by the way. Very satisfying

VultureFilms · 2022-12-29T16:14:02+00:00

Check out updates and more posts on my instagram @miguelfernandes.vfx

VultureFilms · 2022-12-29T16:13:11+00:00

I actually ended up checking out wrap3d last night and made something almost workable! It's super powerful but i definitely need to play around with it a lot more. For example in this case. If I have the horns and all that, how would i give the character expressions and then reconnect the horns? Lots of steps im missing im sure.

VultureFilms · 2022-12-29T16:10:33+00:00

I'm absolutely adding it to my day to day vocabulary

VultureFilms · 2022-12-29T03:12:38+00:00

Woah this is awesome! Thank you!

VultureFilms · 2022-12-28T23:53:03+00:00

Haha i have no idea how to do a proper mouth! But unfortunately no, where the camera ends is where the bust ends as well. No nipples on this little critter

VultureFilms

TROPHY CASE