Christoph Fasching


About Me

VFX Artist


Recent Forum Posts

Houdini Niagara Updates March 4, 2023, 5:21 a.m.

edit - I found a solution - I had to generate a fake N from orient inside Houdini and export both orient and N, then I used this normal as Look at the direction in "orient mesh to vector" module + orient as quaternion override + N as reference axis vector + 1 override incoming orientation. This feels like an overly complex answer to a simple rotation question.

I found a simple solution:
In "Orient Mesh to Vector"
1. Apply @up to 'Look at Direction'
2. Apply @N to 'Side Axis Direction'

I am struggling with this.
Could you explain this a bit further?

RBD Sim via Niagara Plugin to Unreal orient issue March 3, 2023, 12:04 p.m.


I am struggling to get my rbd sim to have the correct orientation in Unreal 5.1.1

The orientation seems wrong. I am using the niagara ROP and plugin to get the point data to Unreal.
It seems one axis is wrong or something because they almost behave like they should but have a weird wobble.

I recreated the issue inside Houdini with a copy to points sop where it has the same issue.

Attached the hiplc file.

Any tip would be awesome!

Thanks in advance!

Karma XPU Color for Volume March 2, 2023, 12:27 p.m.

I am trying to achieve something like this in Karma XPU.

volume displacement in arnold []

Is there a way to do colored volumes with materialx and karma xpu yet?