Hi Xabier,
please continue using the PointSetInteractor, since it allows to interact with
a number of points >=1. The number can explicitly be set to 1 by handing over
this number to the constructor:
mitk::PointSetInteractor::Pointer interactor =
mitk::PointSetInteractor::New("singlepointinteractor", pointSetNode, 1);
mitk::GlobalInteraction::GetInstance()->AddInteractor( interactor );
The interaction-pattern "singlepointinteractor" does exactly what you want: It
sets a point at the picked position and replaces this point by a new position
once a new position is picked / clicked.
The class PointInteractor was written for hierarchical state machines and does
not work on regular state machines. Sorry for the inconvenience. I will adapt
the documentation soon...
Best Regards,
Ingmar
Dipl.-Inform. Med. Ingmar Wegner
DKFZ
German Cancer Research Center (Deutsches Krebsforschungszentrum)
Member of the Helmholtz Association
Division Medical and Biological Informatics E130
Im Neuenheimer Feld 280
D-69120 Heidelberg
Phone: 49-(0)6221-42-3543
Fax: 49-(0)6221-42-2345
E-Mail: [EMAIL PROTECTED]
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-----Ursprüngliche Nachricht-----
Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Xabier
Artaechevarria Artieda
Gesendet: Dienstag, 10. Juni 2008 15:59
An: [email protected]
Betreff: [mitk-users] problem to add single point
Hi all,
I have an application in which I have to set a seed point. I tried to
modify the Region Growing functionality by just changing PointSet to
PointData and PointSetInteractor to PointInteractor.
It compiles, but when executing the program finishes with "MITK
MainApp caught something like an exception".
If I change back to PointSet and PointSetInteractor there is no problem.
Why can that be? How could I restrict the number of possible seed
points to only one?
Thanks for your help in advance,
Xabier
void AirwaySegmentation::Activated()
{
QmitkFunctionality::Activated();
if (m_SeedNode.IsNull()) // only once create a new DataTreeNode
containing a PointSet with some interaction
{
// new node and data item
m_SeedNode = mitk::DataTreeNode::New();
m_SeedNode->GetPropertyList()->SetProperty("name",
mitk::StringProperty::New("Seedpoint for airway segmentation"));
m_Seed = mitk::PointData::New();
m_SeedNode->SetData( m_Seed );
std::cout << "New node and data item" << std::endl;
// new behaviour/interaction for the pointset node
m_Interactor = mitk::PointInteractor::New("pointsetinteractor",
m_SeedNode);
mitk::GlobalInteraction::GetInstance()->AddInteractor( m_Interactor );
std::cout << "Interactor added" << std::endl;
// add the pointset to the data tree (for rendering)
GetDataTreeIterator()->Add( m_SeedNode );
std::cout << "Point added to the data tree" << std::endl;
}
}
--
Xabier Artaechevarria
Cancer Imaging Laboratory
Centre for Applied Medical Research
www.cima.es
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