C4D: Displacement map tears edges apart

[nkoe]

Hello,

this is probably an easy to solve issue, but it keeps following me on every model that I work with until I disable Displacement maps.

I usually export from Rhino or Archicad in obj, fbx or 3ds file formats.

No matter what file format, the Displacement map always explodes my geometry.

I tried inverting Normals, using a Bevel or Optimizing. Optimizing though creates very strange round deformations - visible in the image attached.

C4D model: Unique Download Link | WeTransfer

How can this issue be solved?

[houska]

Your mesh is not connected. This is the issue of how it was exported.

You have two options:

• Fix the export
• Repair the mesh afterwards

I was able to fix your model by first merging all the relevant mesh parts together using Mesh → Conversion → Connect Objects and then by welding the vertices using the Connect modifier (see the attached image). I also had to delete the phong tags, which were incorrect for some reason. The displacement size of 2cm was also a bit too high, I think, so I lowered it to 0.5cm.

[Designerman77]

Generally in C4D, if the displacement tears your edges apart: edges - optimise.

Works always. Your edges will stay stitched together.

[nkoe]

Thank you for the help!

@houska: How could I fix the mesh in the first place?

[houska]

@nkoe

@houska: How could I fix the mesh in the first place?

I’m afraid I cannot help here. This is a matter of correct setup in your exporter and you mention Rhino or Archicad. I have zero experience in any of those two.

[nkoe]

@Designerman77: Edges optimize creates the problem I mentioned initially and that is visible in my attached image. Do you know how to solve that?

[nkoe]

@houska: I tried to reproduce your solution, but I noticed it creates the same problem of strangely rounded geometry that I receive with using Optimize. Can you tell what is the problem here? Thanks a lot!

Here is the file again: Unique Download Link | WeTransfer

[houska]

You have to play with the phong mode in the Connect object. Otherwise it will create a phong tag for you, which you don’t want in this case…

[nkoe]

I noticed that disabling the highlighted conversion option during import and using Optimize on the complete geometry also resolves the issue completely. Thanks again for your help.