SDF\Volume: Planet Atmosphere?

[darioOrtisi]

Does anybody know how to set the planet atmosphere using Volume in bifrostGraph?

Thanks

[sepu6]

I am not exactly sure what you mean by this question, maybe be more specific , provide an example what you want to achieve, in the meantime you can have a look at this and do the same in Maya/BF

https://help.autodesk.com/view/ARNOL/ENU/?guid=arnold_for_houdini_rendering_ah_How_to_Render_a_Plane...

[darioOrtisi]

Thank you @sepu6 I don't have problem with arnold and shading the atmosphere effects. But i will like to try to do something directly with SDF or volume, Controlling volume for clouds in a different way using volume in bifrost or for the Ozone using or try to create a falloff radial ramp from center to external. I will show you the result in maya asap.

Ciao 

P.S: honestly there is something on my shading of clouds that I can't solve. How to change height displacement for volume displacement: I use aivectorMap node, aiRange and a lot of other nodes. Maybe with a aifacingratio even in displacement volume?

[darioOrtisi]

Something like that https://www.sidefx.com/forum/topic/77077/?page=1#post-328924 

[sepu6 · Accepted solution]

you can do the same, just get the fog density property and use a change range add an fcurve and then set it that is what they are doing there fit function (change range) + a ramp (fcurve)

[darioOrtisi]

Thank you @sepu6 it does work.