CSG Transparency Bug

[adam]

There are overlapping faces on the mesh that is created.  It isn't a major issue, but it is a problem for my project, because I would like to use CSG to create transparent meshes.

You can see the issue here:

http://www.babylonjs-playground.com/#TDUK0#27

The darker areas where the objects connect are overlapping faces.

Here is a wireframe:

http://www.babylonjs-playground.com/#TDUK0#28

Does BJS have a function that I can run the Mesh through to clean up those overlapping faces?

[adam]

Here is another example:

http://www.babylonjs-playground.com/#2652CL#0

wireframe:

http://www.babylonjs-playground.com/#2652CL#1

I think it is caused by overlapping faces, but I might be wrong.

 

[adam]

I came up with a work around which gets rid of the transparency issue.

http://www.babylonjs-playground.com/#2652CL#8

Instead of using DoubleSide for sideOrientation, I use FrontSide.  I clone the combined mesh and scale the new mesh by -1 and then merge them.

[adam]

If I wanted to stack these, is there anyway to do that so there is no seam between them?

http://www.babylonjs-playground.com/#2652CL#9

[jerome]

I guess the seam is visible because there are twice the same normals on the same location : these of the lower tube and these of the upper one