Hi ironsightdesign, do you see the banding only in the realtime viewport display in C4D or do you also see it when doing a rendering?

If you see it in rendering it means that vertex normals are not coming over, double check the import options to make sure any option for importing vertex normals is enabled and also if you still see it maybe try .obj format instead of .fbx.

Your objects should have a normals tag after the import into C4D and you need that to get the best quality shading.

- Michael

Hi Michael,

It's more faceting/phong shading problems more than it is banding. You can see both in the viewport and at render. Though, sometimes you can hide it with a heavy bump/noise material, like casted metal.

It happens when the points of the quads are too close to each other. The only solution I've found is to manually weld the all the points along edges where the quads dont line up after meshing.

Normals are fine.

Hi ironsightdesign, if you can please post an example file I might be able to give you some more detailed information and it would help me to understand the issue and think about what might be done about it.

But in the screenshot you showed above: http://moi3d.com/forum/index.php?webtag=MOI&msg=9458.3 that level of banding should definitely not be seen in a rendering with vertex normals being used.

If you're transforming the objects it could be possible that the vertex normals are being discarded.

It's hard to say anything with certainty without an example to test with over here.

- Michael

Hi ironsightdesign, or maybe it's just some general polygonal artifacts that you don't like? The main way to solve that is to use a higher density mesh when exporting out from MoI.

I've attached an example file, you should get a result like this:






You can also use the "Divide larger than" setting at mesh export time to dice up longer polygons into smaller bits, that should give high quality results without any kind of manual point tweaking needed:





- Michael

Hey Michael.

Reviving this thread to see if there are any plans to help solve this meshing issue.

Still getting shading errors where the mesh points between surfaces are really close.

Hi ironsightdesign,

re:
> Reviving this thread to see if there are any plans to help solve this meshing issue.

No, as described earlier in the thread it's a normal result of how the meshing works.

There's a type of general rendering artifact that you might get when you have long skinny polygons, which it looks like you are getting in the area you have shown.

I would recommend using the "Divide larger than" setting in the meshing options dialog when you export out from MoI, that is also described earlier in this same thread as well:
http://moi3d.com/forum/index.php?webtag=MOI&msg=9458.9

If you are still getting shading problems after using "Divide larger than" to dice up long skinny polygons into more regular sized pieces can you send the model you are having problems with to me at moi@moi3d.com so I can take a look?

- Michael

Thanks Michael

Understand its how it works based on your previous explanations. I should have said "plans to update the meshing process to help this issue".

"Divide larger than" seems to help to localize the shading errors to a smaller area...now it's just finding a balance between fixing these artifacts and polygon counts.

Thanks for the help!

Hi ironsightdesign,

re:
> I should have said "plans to update the meshing process to help this issue".

Sorry no currently there are not any specific plans for that. It's not something that can be done by just an adjustment to the current mesher, it would require designing a different meshing algorithm. That's a very time consuming and difficult task to undertake.

- Michael

Totally understand. This is a relatively small issue that is totally overshadowed by the quality of the rest of the meshing when compared to other CAD meshing tools.