I am converting STEP files to STL using, among other helper functions, the BRepMesh_IncrementalMesh function from OCC. I've performed the conversion from STEP to STL using version 6.8.0 and version 6.9.1. For shapes like cube and tetrahedron, the conversion generates the same number of STL triangles when using either version. But for curved shapes, like cylinder and sphere, the number of STL triangles is higher for version 6.9.1. Could someone please comment on or point me to the changes in algorithm/parameters between the two versions, that might be causing the difference in the number of STL triangles?