Auto-sphere for camera for fog rendering

[smicha]

Dear OTOY,

Is it possible to add such option to turn on something like auto-sphere around camera position to be able to render fog even if I am inside SSS medium? It would create an empty geometry (a sphere) in which there would be a camera. Its radius could be an input.

[Phantom107]

Hey smicha,

What you might be able to do is create a big sphere but put a very small sphere inside it so the camera is outside of the medium...

Then create Float Value node at attach it to your Camera node to be the Position. Create a placement node for the sphere and then link that to the Float Value node that's used for the camera.

Should do the trick, in theory?

Wait I'll try it out

[Phantom107]

I think this works, here's what I did:

https://www.dropbox.com/s/q2l712ytot5gh ... .17.49.png

Download sphere.obj here: http://guusthissen.nl/scatter_content/sphere.obj

[smicha]

Very clever Phantom! Thank you for your time and help.

Maybe this solution can serve as a guide for OTOY. 'auto-sphere around camera for fog rendering' e.g. in render kernels would be so nice. Then a small invisible sphere around camera would be added.