Color for intersections

[AlexC]

Hello
I'm trying to achieve an effect where colors "change" when two surfaces overlap. It is a bit like the effect you get when you take three circles of different colors and .

I have two extruded circles in C4d and I am applying different textures to the cap and the extrusion.
I'd like to have the color combination effect happen only on the caps when they overlap.

I know this would normally be a blend mode, which I don't think is possible with two separate textures on two separate 3d objects, but maybe there is some technique that could be used for this? Lighting maybe?

Here is my current file
https://www.dropbox.com/scl/fi/sikex997y5yf4bknl19hi/CylinderIntersection.c4d?rlkey=x3wfnylvi0mvk22il9qhy69db&dl=0

Thank you!

[Dr. Sassi]

Hi AlexC,

Thanks for the file and for using Dropbox.

Here is your file back.
CV4_2024_drs_24_ANis_11.c4d

Please let me know if that works for you.

My best wishes for your project

[AlexC]

So smart! Thanks Sassi, that is absolutely perfect, procedural and clean.

Thank you!

[Dr. Sassi]

You're very welcome, AlexC.

If images or video are projected on these three parts, while the middle material contains both resources, the illusion should work nicely.

Cheers