Address test failures

Author: jmwright

.gitignore

@@ -19,3 +19,9 @@ simple.step
 simple.stp
 simple.xml
 test.brep
+nested.caf
+nested.glb
+nested.stp
+nested.wrl
+nested.xml
+nested.zip

cadquery/occ_impl/exporters/assembly.py

@@ -79,7 +79,7 @@ def exportCAF(assy: AssemblyProtocol, path: str) -> bool:
     return status == PCDM_StoreStatus.PCDM_SS_OK
 
 
-def _vtkRenderWindow(assy: AssemblyProtocol, tolerance: float, angularTolerance: float) -> vtkRenderWindow:
+def _vtkRenderWindow(assy: AssemblyProtocol, tolerance: float=1e-3, angularTolerance: float=0.1) -> vtkRenderWindow:
     """
     Convert an assembly to a vtkRenderWindow. Used by vtk based exporters.
     """
@@ -111,7 +111,7 @@ def exportVTKJS(assy: AssemblyProtocol, path: str):
         make_archive(path, "zip", tmpdir)
 
 
-def exportVRML(assy: AssemblyProtocol, path: str, tolerance: float, angularTolerance: float):
+def exportVRML(assy: AssemblyProtocol, path: str, tolerance: float=1e-3, angularTolerance: float=0.1):
     """
     Export an assembly to a vrml file using vtk.
     """