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Render Studio: how to create atmospheric effects (such as rain, fog, smoke, haze)
mike_stanley
Member Posts: 3 PRO
I'm modeling street lighting and trying to "see" the cone of light as if the light was passing through a light fog where the light is scattered by the fog.
I didn't see any options for changing the atmosphere. I created a big solid "glass with smoke" that represented the air, but couldn't get anything to work.
Any ideas? Knowing that it isn't possible right now would also be helpful.
I didn't see any options for changing the atmosphere. I created a big solid "glass with smoke" that represented the air, but couldn't get anything to work.
Any ideas? Knowing that it isn't possible right now would also be helpful.
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Answers
https://manual.keyshot.com/manual/materials/material-types/advanced-material/scattering-medium/
This was linked off of the developer blog for Iray: https://blog.irayrender.com/archive
https://www.youtube.com/user/migeniusMEDIA/videos
The best way to create that "atmosphere" is to generate a volume encapsulating your object, then you can define the environment in that volume!
The Part Studio:
Important aspects:
1. Need a ground because light can't fall on an environment.
2. The ground needs to overlap/intersect with the air to prevent issues at the boundary.
3. The actual light element is small, so very helpful to put on a fixture that can be easily seen (and can be hidden)
4. Uses a sphere for a uniform source of light.
5. May be helpful to put the light element within a cone "shade"
6. Need a large block of "Air" that is translucent.
Making a light source:
Use "Spot Light" and change intensity to at least 10,000. Change Spot Light Spread to 0.5 to start with so you can see it.
At this point, you should be able to see your light on the "Ground", but not in the "Air". To see light in a fog/mist, you need to copy "Add Volume" in appearances and paste on your "Air" appearance. Change Scattering Coefficient using a dialog box to be a low (0.007) number so not too heavy.
There are many, many options, but these were the key ones that helped me. If you have any suggestions for improving this post, please submit a comment and I'll update the post.
Hopefully this helps others!
Thanks so much for taking the time to come back and write this up!
Thanks for that info!