Large mesh, some geometry is missing

dmsurti / AssimpKit

A library (macOS, iOS) that converts the files supported by Assimp to Scene Kit scenes.

http://assimpkit.readthedocs.io/

BSD 3-Clause "New" or "Revised" License

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Large mesh, some geometry is missing #61

Open dmsurti opened 6 years ago

dmsurti commented 6 years ago

From #56 tyre 3D model which is a large mesh, some geometry is missing after the fix in #59.

See the screenshot in example app compared with blender:

screenshot 2017-08-31 15 52 54

kylebme commented 6 years ago

I'm seeing this issue with a lot of files. I've attached a zip with a few stl files that have a significant amount of missing geometry. I've tried setting many preprocessing settings, including AssimpKit_Process_FixInfacingNormals, but the issue remains. It does appear that some of the geometry is only showing on one side of the triangles, but other parts of the geometry is missing no matter which side you look at it. messed up stls.zip

Device: iPhone 6s, iOS 11.01

ghost commented 6 years ago

I'm also still experiencing this issue, I've attached an .obj that is giving me issues as well as the tire model shown above. Any idea on when v1.3 will be released with this bug fix?

helicopter.obj.zip

dmsurti commented 6 years ago

@tobyduffy Yes, there is a fix in place, not yet integrated. v1.3.0 is due for release mid November.

Thanks for sharing the file.