Hide to camera

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Rhino 3D (Export script developed by SamPage; Integrated Plugin developed by Paul Kinnane)

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Hide to camera

Postby fabrizio_s » Fri Mar 03, 2017 9:07 am

fabrizio_s Fri Mar 03, 2017 9:07 am
Hi,
is there a way to hide some objects to the camera but not to GI?
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Re: Hide to camera

Postby face_off » Fri Mar 03, 2017 10:02 am

face_off Fri Mar 03, 2017 10:02 am
I think what you are after is a reflection pass (where you see the objects reflection, but not the object itself). You can do this by enabling render layers. then rendering a Reflections pass (I think you need Alpha Channel enabled in the Kernel). See https://www.youtube.com/watch?v=ozW98ZjeXYM for details.

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Re: Hide to camera

Postby fabrizio_s » Fri Mar 03, 2017 1:54 pm

fabrizio_s Fri Mar 03, 2017 1:54 pm
Hi Paul,
I have an interior scene enlighten by sun and sky. In the exterior part of the scene a put a plane to better light up the interior by the bounces of indirect light that come from the plane.
But in the final rendering I don't want to see this plane from windows because I want to put an image as a background.

Sorry for my english

Bye

Fabrizio
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Re: Hide to camera

Postby formatio » Fri Mar 03, 2017 1:56 pm

formatio Fri Mar 03, 2017 1:56 pm
You can use diffuse material and set it to "shadow catcher" mode, or make it live geometry and set invisible to camera/shadows

Regards,
Mac
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Re: Hide to camera

Postby fabrizio_s » Fri Mar 03, 2017 2:14 pm

fabrizio_s Fri Mar 03, 2017 2:14 pm
Thanks a lot Mac
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Re: Hide to camera

Postby fabrizio_s » Fri Mar 03, 2017 6:51 pm

fabrizio_s Fri Mar 03, 2017 6:51 pm
Hi Mac,
i tried both methods but they seem not to work.
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Re: Hide to camera

Postby formatio » Fri Mar 03, 2017 7:24 pm

formatio Fri Mar 03, 2017 7:24 pm
Hi

Check this out

This is normal
normal.JPG
normal mode


This is live geometry :
live-geo.JPG
live geometry with settings


With this settings:
setings.JPG
settings
setings.JPG (21.59 KiB) Viewed 4261 times


Does exactly what you wanted.

Regards,
Mac
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Re: Hide to camera

Postby face_off » Fri Mar 03, 2017 8:53 pm

face_off Fri Mar 03, 2017 8:53 pm
Mac, I think Fabrizio wants the reflections in addition to the emitted light. If not, then if it's an emitter, you can also set the material opacity to 0.

Paul
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Re: Hide to camera

Postby fabrizio_s » Sat Mar 04, 2017 6:24 am

fabrizio_s Sat Mar 04, 2017 6:24 am
Hi to everyone,
the "problem" appear with glass. Take a look to the images. The first is with glass on the windows. The second is without glass.
In the first one I can see hdri and the plane (or the reflection of the plane?) on the exterior scene
In the second one I can see the background (as expected)
(light: hdri - background: RGB white)

Image

Image

So how can I avoid it?

thanx
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Re: Hide to camera

Postby face_off » Sat Mar 04, 2017 8:19 pm

face_off Sat Mar 04, 2017 8:19 pm
the "problem" appear with glass. Take a look to the images. The first is with glass on the windows. The second is without glass.
In the first one I can see hdri and the plane (or the reflection of the plane?) on the exterior scene
In the second one I can see the background (as expected)
(light: hdri - background: RGB white)
Can you post a screenshot of the glass material setup pls?

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
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