Working on it.

I just searched through all .cpp and .h files of MITK to check the usage of the affected mitk::PlaneGeometry methods.

• IsParallel() is only used in mitk::PlanarFigureMapper2D (where the bug was actually found)

• IsOnPlane() is not used at all outside of mitk::PlaneGeometry

I'm not entirely sure about the usage of operator== and operator!= for planes, because this is a bit harder to find out, but on a first look I didn't find any usage either.

The following definition of parallelity is currently used in PlanarFigureMapper2D as a workaround, maybe this helps:

mitk::Vector3D planeNormal1 = ...
mitk::Vector3D planeNormal2 = ...
mitk::Vector3D crossProduct = itk::CrossProduct( planeNormal1, planeNormal2 );

if ( (crossProduct.GetNorm() < mitk::eps) )
{

// Planes are parallel

}

Status:

• IsParallel() method is fixed. Can now handle both cases.

• moving operator==, operator!= into private didn't cause any compile errors/warnigs

• documenting the methods

Still to be done:

• adapt the unit tests

[SVN revision 22741]
FIX (#3965): fixing the IsParallel method, making operator== and != private and extending the unit test.

Bug fixed. Closing bug.

Still not working, still relevant and urgent. Mathias is working on a fix.

[SVN revision 23212]
FIX (#3965): Reduce accuracy when checking for parallelism

[SVN revision 23214]
COMP (#3965): Adapt test to reduced accuracy for parallelism check