Hi Alan - you can’t do that in plain Rhino - any renderable, visible objects will be rendered and hidden ones not. I don’t know about VRay, but it seems unlikely- the opposite is allowed in some renderers - objects tagged as not renderable, but I’ve never run accross what you are asking for. Which does not mean it is not there, of course…
Thanks for the quik response. I’ve found this info, in case anyone out there could use it, which is definitely different than what I’m asking, but may help with part of the problem;
> The only thing you can do with reference to the environment light is to add a box around your room. Then give that box a material that has ‘only in secondary’ checked. This will bounce the light back into the room but won’t be visible to camera.
Pretty interesting idea, and I will be trying this.
UPDATE: The quoted text above is better contextually filed under “Near Clipping Plane” - just an fyi. I don’t think there’s a Camera near/far clipping plane option in either rhino or vray here
If this is for performance reason I would look into using V-Ray Proxies:
The proxy mesh displayed in Rhino can be reduced down (or even replaced) to increase performance, while the rendered mesh in V-Ray stays the same high quality.
I should say it’s also about not wanting to have to remember to turn objects/layers back on when I hide them while working.
Like in C4D, there are separate radial buttons for viewport and rendering - you can have something hidden, yet still render. Very nice feature (in case any McNeel people are reading this )
There is a very simple solution I discovered for heavy architecture scene renderings some years before. You need to mark you invisible object layers with a sign in the name, I used ° . I placed the script at a button.
You can make a display mode where you either turn objects to be 100% transparent [ Shading settings > Transparency ] or (might be better) uncheck the [ Shading settings > Shade objects ] option. Also turn off isocurves and edges and that will make your objects invisible in the viewport but they will still render. You can apply this display mode to only the objects you want by using the -SetObjectDisplayMode command.