Remove `private:` from the PBVHFaceIter. This is not really a C++ class, and the C++ code generates a lot of warnings about unused fields. Also mark function static and run clang-format.
Remove `private:` from the PBVHFaceIter. This is not really a C++ class, and the C++ code generates a lot of warnings about unused fields. Also mark function static and run clang-format.