Chaos Corona Forum
Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: nkoe on 2020-02-17, 18:35:38
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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: https://we.tl/t-rDtLOQlC2G
How can this issue be solved?
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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.
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Generally in C4D, if the displacement tears your edges apart: edges - optimise.
Works always. Your edges will stay stitched together.
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Thank you for the help!
@houska: How could I fix the mesh in the first place?
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@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.
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@Designerman77: Edges optimize creates the problem I mentioned initially and that is visible in my attached image. Do you know how to solve that?
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@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: https://we.tl/t-5Nu02G7Dsp
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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...
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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.