Index of Refraction Default Value

Poser (Integrated Plugin developed by Paul Kinnane)

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Khuri
Licensed Customer
Posts: 25
Joined: Wed Jan 06, 2016 8:29 am

Hi,

I've noticed that the default "Index of Refraction"-Value is set to 0 when looking at a material, however the slider/values allows a float of 1-8.
If you change the value, you can also just go from 1-8.

This might be a bug when converting materials?
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face_off
Octane Plugin Developer
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Joined: Fri May 25, 2012 10:52 am
Location: Adelaide, Australia

High - this is based on the way Octane used to work many years ago - and it correct based on the Specular color that is also converted. If you set the IOR to 1.3 you will need to increase the specular color too.

Paul
Win7/Win10/Mavericks/Mint 17 - GTX550Ti/GT640M
Octane Plugin Support : Poser, ArchiCAD, Revit, Inventor, AutoCAD, Rhino, Modo, Nuke
Pls read before submitting a support question
Khuri
Licensed Customer
Posts: 25
Joined: Wed Jan 06, 2016 8:29 am

Hi Paul,

sorry, but I'm slightly confused by your answer :)

What I meant is that the value appears by default to be 0.
However once you change that value, you can only go in a range of 1 to 8, and never turn back to 0.

My question is, does 0 equal 1 for the system in the way of: If I leave it at 0 will it have the same results as if I would set it to 1 ?
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face_off
Octane Plugin Developer
Posts: 15714
Joined: Fri May 25, 2012 10:52 am
Location: Adelaide, Australia

From memory an IOR of 0 is the same as 1.0000001. And an IOR of 1.0 is the same as 8. So the default is 0, but once you move the slider you are operating in the new 1.000001 to 8 range.

Paul
Win7/Win10/Mavericks/Mint 17 - GTX550Ti/GT640M
Octane Plugin Support : Poser, ArchiCAD, Revit, Inventor, AutoCAD, Rhino, Modo, Nuke
Pls read before submitting a support question
Khuri
Licensed Customer
Posts: 25
Joined: Wed Jan 06, 2016 8:29 am

Thank you for the explanation!
Happy Holidays! :)
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