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1 sided projection

Posted: Wed Jan 20, 2021 10:21 pm
by atoyuser1
I'm trying to project a material on one side of a plane, with another on the back

I know I can do this using the Side node and Mix Texture mode (following Octane's documentation), but I want to use a base layer, with the front side on top of it
Screenshot 2021-01-20 at 22.16.46_70.jpg
Screenshot 2021-01-20 at 22.16.46_70.jpg (4.75 KiB) Viewed 919 times
Screenshot 2021-01-20 at 22.17.19_70.jpg
Screenshot 2021-01-20 at 22.17.19_70.jpg (2.42 KiB) Viewed 919 times
It produces a blank back to the plane:
Screenshot 2021-01-20 at 22.17.05_70.jpg
Screenshot 2021-01-20 at 22.17.05_70.jpg (4.34 KiB) Viewed 919 times
Is there a way round this? I've tried to use an imageTexture node with alpha set, but that didn't work either:
Screenshot 2021-01-20 at 22.20.54.png
I've attached my C4D file in case anyone wants to take a look

Re: 1 sided projection

Posted: Thu Jan 21, 2021 12:32 pm
by bepeg4d
Hi,
you are working with two different materials :roll:

There are two ways:

1. Transform both materials into submaterials:
BB939DB7-D0F1-4639-A4B4-FFDAFE581614.jpeg
then copy one of the in the other one and connect the submaterial to the new Composite material created, using the Side node in the Mask:
BDE30562-A3A2-4524-B456-7348FDCF2A58.jpeg
2. Add a Diffuse Layer to one of the material, and use the Side node in the Mask:
1A852DF1-39C2-467F-B428-912024C69D1B.jpeg
Here is the scene, on the left the Composite Material version, on the right the Layered Material version:
2-sided Octane material-v02_b.zip
(57.74 KiB) Downloaded 83 times
ciao Beppe

Re: 1 sided projection

Posted: Tue Feb 02, 2021 3:04 pm
by atoyuser1
Finally got Octane running again - Side node on the opacity worked a treat! thanks