First of all I’m not a 3D expert so please be patient and eventually, sorry for my English which is not my native language.
I’m investigating a problem I met while trying to visualize a Sketchup model within ARkit from Apple.
Basically everything works like expected when you export from Sketchup without the “export edges” enabled. Unfortunatly I need to keep a Sketchup like rendering so I do need the edges.
Exporting the edges works but all meshes with smoothed edges turn full black as if the normals where inverted.
I’ve done a simple test to be sure it wasn’t due to anything strange during the modeling and to show you:
- extruded a mesh from a rectangle
- duplicated the mesh
- rounded and smoothed an edge on the new mesh
- exported using Collada with “export edges” checked
Now first oddity, once exported, osX preview (within Finder) already show the problem, we can see the mesh with rounded and smoothed edge is displayed in full black:
And unfortunately once into sceneKit, same problem.
Anyone has an idea of what’s going on here?
Could the Sketchup exporter be the flawed?
Any idea on how I could solve this?