[Physics.PhysX] cleaning the mesh failed

[CHenBuCHen]

I don't know this my promble or is a bug or something else.
This appears in "Heightmap World Example" .
I open with Unity2019.3.2f1.
And I really like this project. I appreciate your work.

[Eldemarkki]

I’m aware of this bug, but currently I don’t really have ideas as to what is causing it. The most logical reason in my opinion is something to do with the density calculation in HeightmapDensityCalculationJob.cs. I will probably try to fix this soon.

[Eldemarkki]

I have figured out what is causing this, but haven't thought of a solution yet. It is caused when a chunk's only mesh is a tiny edge. It can be seen in this video: https://vimeo.com/399672667. The grey box (which can be barely seen) is the chunk that is causing the error. At 8 seconds in the video, I'm showing the edge that is inside the error-chunk causing the problem.

[CHenBuCHen]

Hello,I fork you project ,and create my tools based on it. In my project I can editor terrain in editor mode and save chunk states ,serialize densities. You can use "tools/Create Voxel World" create terrain.
Tools are simple ,not easy to use. I'm thinking about translate FBX/OBJ to terrain .
The problem is this, I want to reproduce bug in my tools, but it does not appear. I notice in your project when amplitude = 30, 34, 40,60,68. error message appear(I had try amplitude =1-70). In my tools error messages does not appear.
(For example when amplitude = 30 , in your project chunk_4_0_11'mesh has 30 verts 10tris, in my project chunk_4_0_11'mesh has 0 verts 0tris)
I don't know what's happend, and what's the difference between this.I'm not sure if I solved the bug or if the bug will appear at other values /* I'm a terrible programmer,with ugly code. :( */ . I hope this can help .https://github.com/CHenBuCHen/Marching-Cubes-Terrain

[Eldemarkki]

Fixed in develop branch. Commit id: 67a254f

[Eldemarkki]

Fixed in master