v2[0] = bbGetInputRotateToNormal()[0];
v2[1] = bbGetInputRotateToNormal()[1];
v2[2] = bbGetInputRotateToNormal()[2];
+
+ double mag= sqrt( v2[0]*v2[0] + v2[1]*v2[1]+ v2[2]*v2[2] ) ;
+ v2[0] = v2[0] / mag;
+ v2[1] = v2[1] / mag;
+ v2[2] = v2[2] / mag;
vtkMath *vtkmath = vtkMath::New();
double ang = acos ( vtkmath->Dot(v1,v2) );
ang = vtkmath->DegreesFromRadians( ang );