Dear MITK users,
I'm trying to use IGT with our Polaris Spectra Passive Toolkit.
The IGT example module is used as a basis. So I've rebuilt a plugin which uses
most of the original IGT example plugin (I removed all recording and plotting).
My primary goal is to track and visualize the NDI rigid bodies into the 3D
window from the standard view.
So I reused code parts from the IGT tutorial and IGT testing.
Basically:
Draw a cone associated to my NDI device
mitk::Cone::Pointer cone = mitk::Cone::New(); //instantiate a new cone
float scale[] = {100.0, 100.0, 100.0};
cone->GetGeometry()->SetSpacing(scale); //scale it a little that so we can see
something
mitk::DataTreeNode::Pointer node = mitk::DataTreeNode::New(); //generate a new
node to store the cone into
//the DataStorage.
node->SetData(cone); //The data of that node is our cone.
node->SetName("My tracked object"); //The node has additional properties like a
name
node->SetColor(1.0, 0.0, 0.0); //or the color. Here we make it red.
this->GetDefaultDataStorage()->Add(node); //After adding the Node with the cone
in it to the
//DataStorage, MITK will show the cone in the
//render windows.
//For updating the render windows we use another filter of the MITK-IGT
pipeline concept. The
//NavigationDataObjectVisualizationFilter needs as input a NavigationData and a
//PolyData. In our case the input is the source and the PolyData our cone.
//First we create a new filter for the visualization update.
m_Visualizer = mitk::NavigationDataObjectVisualizationFilter::New();
m_Visualizer->SetInput(0, m_Source->GetOutput(0)); //Then we connect to the
pipeline.
m_Visualizer->SetBaseData(0, cone); //After that we have to assign the cone to
the input
Try to position the viewport camera as the NDI reference camera (in the middle
of the NDI IR cameras) so that my tracked object is in the field of view.
mitk::CameraVisualization::Pointer myFilter = mitk::CameraVisualization::New();
//mitk::GlobalInteraction::GetInstance()->Initialize("global");
// Define position for the navigation data
mitk::NavigationData::PositionType position;
position[0] = 0;
position[1] = 0;
position[2] = 0;
// Define orientation for the navigation data
mitk::NavigationData::OrientationType orientation;
orientation[0] = 0;
orientation[1] = 0;
orientation[2] = 0;
orientation[3] = 1;
// set parameters of navigation data
mitk::NavigationData::Pointer nd1 = mitk::NavigationData::New();
nd1->SetPosition(position);
nd1->SetOrientation(orientation);
myFilter->SetInput(nd1);
// set renderer
myFilter->SetRenderer(mitk::BaseRenderer::GetInstance(m_MultiWidget->mitkWidget4->GetRenderWindow()));
//Update filter
myFilter->Update();
In order to make it simple, all this code is in the OnTestNavigation() method
of the plugin.
I did try to adapt my camera orientation but nothing is visible. Two objects
appear in the datamanager: My tracked Object and MyInstrument 0.
It is probably obvious so I'm digging in the documentation but any help is
appreciated.
Thanks.
Tangi
-------------------------------------
Tangi MEYER
Virtual and Augmented Reality
System and Software Engineer
Leuvensesteenweg 325
B-1932 Zaventem - Belgium
Telephone: +32 (0) 2 721 54 84
Fax: +32 (0) 2 721 54 44
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