switch off object shadows...?

V-Ray for Rhino V-Ray for Rhino :: General
1

It’s possible to make off shadows of object, when this object is visible for a camera?

2

Re: switch off object shadows…?

Nope.
Why would you need this?

You can turn off shadows in the light source option menu, though.

3

Re: switch off object shadows…?

I need switch off shadow for only one object in global scene.
One solution is here:
http://forum.asgvis.com/index.php?topic=3782.msg19205#msg19205

But this solution remove object from reflection too.
The reason is unimportant… :wink: But - I have acr around interior (behind windows) scene with environment picture on this. When i use vray sun, then this arc make shadows in interior…
I would like know if this is possible…

and I need not answer like: “make background in photoshop” :slight_smile: - Thats i know

4

Re: switch off object shadows…?

You could try an emitter material for the env photo and transparency at 254. So, the sun goes 99% through the plane. Now set the intensity like you want it. The global background should be black. Let us know, if it work. :wink:

5

Re: switch off object shadows…?

Micha, you are, simply, master! :))
This solution work! - intensity emise layer must be very high - cca 800…But it’s super :wink:
Is similar solution for solid? - I think, switch off shadows? Do you have any idea?

result:

6

Re: switch off object shadows…?

For solids I have no idea, sorry. :wink:
I hope once a day VfR will be up to date and I must not keep all this workarounds in my head anymore. :slight_smile:

7

Re: switch off object shadows…?

I am not wonder to you:) This is probaly wish of all :))

Once more very thank you!

8

Re: switch off object shadows…?

Do you mean, having a solid around your scene and using V-Ray sun?
I’ve just given it a try with a sphere and my solution is:

- create a VRaySkp2sidedMtl
- in the slot, use a 100% transparent material
- in the slot, use an emitter material (multiplier 20 was enough with my settings) with your background image.
- place everything else inside of this at a good distance

Does that work for you, as well?

9

Re: switch off object shadows…?

No no…I think solid for example box in room and similary…
But isn’t possible :confused:
But this idea with sphere is very good too! :wink:
The key is in emitter material with transparenci, thats way :slight_smile:

10

Re: switch off object shadows…?

ah, I see… yep, you can’t do this in the current V-Ray release.
It’s a whole lot of playing with the lights in a scene; after all it’s something I’d refer to as the “realistic approach” :wink: since you can’t turn off shadows on real objects as well :smile:

11

Re: switch off object shadows…?

Yes, you’r right, but rendering isn’t only “realistic approach” :slight_smile:
We must often make real effect through unreal approach :smiley: