switch off object shadows...?

[Uruba]

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

[frip51]

Re: switch off object shadows...?

Nope.
Why would you need this?

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

[Uruba]

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?to...19205#msg19205

But this solution remove object from reflection too.
The reason is unimportant... 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" - Thats i know

[Micha_cg]

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.

[Uruba]

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
Is similar solution for solid? - I think, switch off shadows? Do you have any idea?

result:

[Micha_cg]

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
Is similar solution for solid? - I think, switch off shadows? Do you have any idea?

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

[Uruba]

Re: switch off object shadows...?

I hope once a day VfR will be up to date and I must not keep all this workarounds in my head anymore.

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

Once more very thank you!

[frip51]

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 [Front] slot, use a 100% transparent material
- in the [Back] 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?

[Uruba]

Re: switch off object shadows...?

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

[frip51]

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" since you can't turn off shadows on real objects as well

[Uruba]

Re: switch off object shadows...?

Yes, you'r right, but rendering isn't only "realistic approach"
We must often make real effect through unreal approach