About the material randomness here is a simple scene (Max 2018 & Vray) :http://cynaptek.com/files/RailClone_Test.zip
As you see I can't have the randomness by segment of the spline if I have several levels.
All the "Generate on" options don't allow me to have one color for each Segment.
It works only when the same mesh is used for the "Bottom Side" and "Default". It's like having two Material modifier (one for each model) means that the random generator generate two different number.
Is there a better way to have the same color for each Spline's Segment in that case ?
The problem is similar for the height. I would like to be able to control the height by Spline's segment and not by Model. The only solution I found is to control the height with a Numeric parameter linked to the Y Size of the Array 2S.
Please let me know if I'm missing something. Thanks !