Displacement on bottle - Keyshot 8.1

[Finema]

Hi,
I use Displace geometry node on a solid bottle model.
I would like the displacement to apply only to the outside of the model and not to the inside.
I want to keep this model solid because it will have to contain liquid.
I join a test bip file.
Thanks in advance.

[Finema]

as you can see in the attachment files  > outside displacement is ok but the inside is also displace and i don't want that 

[Will Gibbons]

To only affect the outside, you need to either mask out the inner surface which could be done with occlusion. The better solution is probably to separate the inner surface. Either do this in a 3D application or use KeyShot's Geometry Editor to do this.

[bdesign]

Hi Philippe-

As Will states, you need to mask the inner surface of the glass. I as well thought perhaps an Occlusion node would work; it did not produce desirable results. Splitting the inner and outer surfaces didn't work correctly with the nested dielectrics. So...I took your bottle model into Rhino, rebuilt it as NURBs geometry, and applied UV mapping to it. I then took a UV snapshot into PS and created a mask, with white covering the outside UVs and black covering the inside and top lip UVs. I plugged your existing Color Composite into the Source of an additional one, using the UV mask (mapping type UV) as Source Alpha, and plugged the new CC node into the Displace node. This gave the desired results with both the displacement and nested dielectrics.

Cheers,
Eric

[Finema]

Awesome Eric !!!!!! It's perfect !
It's really useful in my work on design bottles and decanters.
ps : i use MoI 3D rather than Rhino but the process is the same.
Thanks again for this. You are great !!

[Finema]

displacement VS emboss pattern

[bdesign]

Awesome Eric !!!!!! It's perfect !
It's really useful in my work on design bottles and decanters.
ps : i use MoI 3D rather than Rhino but the process is the same.
Thanks again for this. You are great !!

Thank you, Philippe! I'm happy to know that it is helpful. Your render looks awesome

Cheers,
Eric

[Will Gibbons]

Nice solution, Eric!

[bdesign]

Nice solution, Eric!

Thank you, Will!

Cheers,
Eric