How to Exclude object from object

[whelectric]

Hi ,there are one sphere and one cube in my scene, I create one plane with emission material as reflector to light cube, but how can I Exclude the sphere from this plane(Reflector)

[Stephen.Blair · Accepted solution]

You can use trace sets.

1. Put the plane in a trace set (for example, "emission")
2. Put a traceset shader on the sphere

[whelectric]

Hi stephen,well noted thank u so much

[whelectric]

Hi dear 

if there are a lots objects in my scence for example object A1 to A99 , but i hope reflector(Trace_set:"Eimisson") only affect object A1 , so i have to set trace_set shader(exclude "Eimission") on per object from A2-A99 ? 

[peter_horvath · Accepted solution]

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@whelectric wrote:

Hi dear 

if there are a lots objects in my scence for example object A1 to A99 , but i hope reflector(Trace_set:"Eimisson") only affect object A1 , so i have to set trace_set shader(exclude "Eimission") on per object from A2-A99 ? 

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If you have to use an emissive material, then I think yes, you have to exclude the trace set per object (A2-A99).

If you can use a mesh light instead, then you can setup light linking on the Project tab where you can Include only the given object (A1).