Environment Fog with volume object

[freedomfries]

Hi,

I am not finding how to create a volume object, like a cube or sphere object to contain an environment fog material. There is no clear workflow description on how to do this. Any pointers? I am embarrassed to admit I did this a couple years ago but I can't remember how.

Thanks!

[Jvincentfx45]

Hello,

This is how I do it which I think came from Vlado a while back

1. Assign an envfog via the render globals -> vray -> environment section
2. Create a shape that'll be the bounding volume, assign a vray material, set its opacity cutoff to black so its invisible
3. Window -> relationship editor -> sets, select the envfog on the left, shape on the right

[Jvincentfx45]

I should say I think there is another way but this way as I recall allows you to have the camera inside the fog

[ivaylo.ivanov]

The other way is the standard Maya workflow using the shading engine, but you are right, it doesn't work with camera inside the object.

[freedomfries]

thank you for the answers I will try this.

[joa_grilo]

Can you guys please explain it a bit more?
Or give a demo scene of that? Thanks

[tashko.zashev]

Can you guys please explain it a bit more?
Or give a demo scene of that? Thanks

What kind of demo scene you need? Camera inside fog?

[freedomfries]

Just follow vincent's workflow... The part I was missing was to assign the volume container to a set. That's all there is to it.

[serband]

I am trying to apply a volume fog to a specific V-Ray Rect Light or Spot Light and I really can't make it work without contributing to the Environment as well. And all I want is that the volumetric fog would only affect the Light nothing else. Not sure how to do this in Maya, I tried every option with Relationship Editor , with Sets, Light Linking, Object Linking, nothing works. Wish that Maya would have the same options from 3DsMax EnvironmentFogNode where you can simply select the light that will be added to the VolumeFog without contributing to environment.

As in this example:


Anyone has figured this one out?
I would really appreciate if someone can point me into the right direction.

Thank you,
Serban

[yolov]

See if the following helps:
The environment fog node can more or less behave like a Maya set - you can just add the light to it as you would add the light to any set (in the outliner you can just middle-mouse-drag the light into the env fog). Then you need to set the Light Mode in the fog settings to "override shape lights" ( https://docs.chaosgroup.com/display/...mentFog-Common )