at my job I
m working with Vray, and if one create a plane-light you get a parameter thats called “directional”. So you are able to control the light if its more diffuse or more direct. I found that very handy and tried to archieve the same function in Cycles.
My thought was: isn`t it possible to get the light path from the light-path-node and do a math operation that leaves only the rays in normal direction through?
I tested different node and math operations but didn`t really understood what happend.
Is this not possible to get such a result with the existing nodes?
Or is my idea wrong how to solve the problem?!
Any response is welcome. Thanks in advance.