Hi Jochen, <div>thank you very much, I really appreciate your help- that was exactly what I had problem to connect. </div><div><br></div><div>Jana </div><div><br><div class="gmail_quote">On 20 June 2012 12:47, Jochen K. <span dir="ltr"><<a href="mailto:jochen.kling@email.de" target="_blank">jochen.kling@email.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Jana,<br><br>
much better!<br>
Here we go:<br>
<pre>#<span style="color:Blue">include</span> <vtkVersion.h>
#<span style="color:Blue">include</span> <vtkPolyDataMapper.h>
#<span style="color:Blue">include</span> <vtkActor.h>
#<span style="color:Blue">include</span> <vtkRenderWindow.h>
#<span style="color:Blue">include</span> <vtkRenderer.h>
#<span style="color:Blue">include</span> <vtkRenderWindowInteractor.h>
#<span style="color:Blue">include</span> <vtkPolyData.h>
#<span style="color:Blue">include</span> <vtkSphereSource.h>
#<span style="color:Blue">include</span> <vtkOrientationMarkerWidget.h>
#<span style="color:Blue">include</span> <vtkAxesActor.h>
#<span style="color:Blue">include</span> <vtkPropAssembly.h>
#<span style="color:Blue">include</span> <vtkSmartPointer.h>
#<span style="color:Blue">include</span> <vtkInteractorStyleTrackballCamera.h>
#<span style="color:Blue">include</span> <vtkCommand.h>
#<span style="color:Blue">include</span> <vtkCamera.h>
#<span style="color:Blue">include</span> <vtkCallbackCommand.h>
#<span style="color:Blue">include</span> <vtkObjectFactory.h>
#<span style="color:Blue">include</span> <vtkMatrix4x4.h>
<span style="color:Blue">class</span> MySphereSource : <span style="color:Blue">public</span> vtkSphereSource {
<span style="color:Blue">public</span>:
vtkTypeMacro(MySphereSource, vtkSphereSource);
<span style="color:Blue">static</span> MySphereSource* New();
<span style="color:Blue">void</span> MySphereSource::printDirectionOfProjection(<span style="color:Blue">double</span>* dirOfProj)
{
<span style="color:Blue">cout</span> << <span style="color:Maroon">"direction of view: "</span> << dirOfProj[<span style="color:Maroon">0</span>] << <span style="color:Maroon">" "</span> << dirOfProj[<span style="color:Maroon">1</span>] << <span style="color:Maroon">" "</span> << dirOfProj[<span style="color:Maroon">2</span>] << <span style="color:Blue">endl</span>;
}
<span style="color:Blue">protected</span>:
MySphereSource(){};
~MySphereSource(){};
};
vtkStandardNewMacro(MySphereSource);
<span style="color:Green">// Command</span>
<span style="color:Blue">class</span> vtkCameraObserver : <span style="color:Blue">public</span> vtkCommand
{
<span style="color:Blue">public</span>:
<span style="color:Blue">static</span> vtkCameraObserver *New()
{<span style="color:Blue">return</span> <span style="color:Blue">new</span> vtkCameraObserver();};
<span style="color:Blue">void</span> SetPolyDataAlgorithm(MySphereSource* mySphereSource) {
<span style="color:Blue">this</span>->mySphereSource = mySphereSource;
}
<span style="color:Blue">protected</span>:
vtkCameraObserver() {};
~vtkCameraObserver(){}
<span style="color:Blue">virtual</span> <span style="color:Blue">void</span> Execute(vtkObject* caller, <span style="color:Blue">unsigned</span> <span style="color:Blue">long</span> event, <span style="color:Blue">void</span> *calldata)
{
<span style="color:Blue">cout</span> << <span style="color:Maroon">"Camera modified event"</span> << <span style="color:Blue">endl</span>;
vtkCamera* cam = <span style="color:Blue">reinterpret_cast</span><vtkCamera*> (caller);
<span style="color:Blue">double</span>* direction = cam->GetDirectionOfProjection();
mySphereSource->printDirectionOfProjection(direction);
<span style="color:Green">// In case you would need this too:</span>
<span style="color:Green">//vtkMatrix4x4* mat = cam->GetViewTransformMatrix();</span>
<span style="color:Green">//cout << "View matrix: " << endl; </span>
<span style="color:Green">//cout << "================================================================================= " << endl; </span>
<span style="color:Green">//cout << mat->GetElement(0, 0) << "\t" << mat->GetElement(0, 1) << "\t" << mat->GetElement(0, 2) << "\t" << mat->GetElement(0, 3) << "\t" << endl;</span>
<span style="color:Green">//cout << mat->GetElement(1, 0) << "\t" << mat->GetElement(1, 1) << "\t" << mat->GetElement(1, 2) << "\t" << mat->GetElement(1, 3) << "\t" << endl;</span>
<span style="color:Green">//cout << mat->GetElement(2, 0) << "\t" << mat->GetElement(2, 1) << "\t" << mat->GetElement(2, 2) << "\t" << mat->GetElement(2, 3) << "\t" << endl;</span>
<span style="color:Green">//cout << mat->GetElement(3, 0) << "\t" << mat->GetElement(3, 1) << "\t" << mat->GetElement(3, 2) << "\t" << mat->GetElement(3, 3) << "\t" << endl;</span>
<span style="color:Green">//cout << "================================================================================= " << endl; </span>
<span style="color:Green">//double* x = cam->GetOrientation();</span>
<span style="color:Green">//cout << "Orientation : " << x[0] << " " << x[1] << " " << x[2] << endl;</span>
}
<span style="color:Blue">private</span> :
MySphereSource* mySphereSource;
};
<span style="color:Blue">int</span> main (<span style="color:Blue">int</span>, <span style="color:Blue">char</span> *[])
{
vtkSmartPointer<MySphereSource> sphereSource =
vtkSmartPointer<MySphereSource>::New();
sphereSource->SetCenter(<span style="color:Maroon">0</span><span style="color:Maroon">.0</span>, <span style="color:Maroon">0</span><span style="color:Maroon">.0</span>, <span style="color:Maroon">0</span><span style="color:Maroon">.0</span>);
sphereSource->SetRadius(<span style="color:Maroon">1</span><span style="color:Maroon">.23</span>);
sphereSource->Update();
vtkPolyData* polydata = sphereSource->GetOutput();
<span style="color:Green">// Create a mapper</span>
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
<span style="color:Blue">#if</span> VTK_MAJOR_VERSION <= <span style="color:Maroon">5</span>
mapper->SetInput(polydata);
<span style="color:Blue">#else</span>
mapper->SetInputData(polydata);
<span style="color:Blue">#endif</span>
<span style="color:Green">// Create an actor</span>
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
<span style="color:Green">// A renderer and render window</span>
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
<span style="color:Green">// An interactor</span>
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
vtkInteractorStyleTrackballCamera *style =
vtkInteractorStyleTrackballCamera::New();
renderWindowInteractor->SetInteractorStyle(style);
<span style="color:Green">// Add the actors to the scene</span>
renderer->AddActor(actor);
renderer->SetBackground(<span style="color:Maroon">.2</span>, <span style="color:Maroon">.3</span>, <span style="color:Maroon">.4</span>);
<span style="color:Green">//*************************************************************************************</span>
<span style="color:Green">// Create observer</span>
vtkSmartPointer<vtkCameraObserver> observer = vtkSmartPointer<vtkCameraObserver>::New();
<span style="color:Green">// tell observer on which object to operate on</span>
observer->SetPolyDataAlgorithm(sphereSource);
<span style="color:Green">// hook observer into camera's modified event</span>
vtkCamera* cam = renderer->GetActiveCamera();
cam->AddObserver(vtkCommand::ModifiedEvent, observer);
<span style="color:Green">//*************************************************************************************</span>
<span style="color:Green">// Add widget</span>
vtkSmartPointer<vtkAxesActor> axes =
vtkSmartPointer<vtkAxesActor>::New();
vtkSmartPointer<vtkOrientationMarkerWidget> widget =
vtkSmartPointer<vtkOrientationMarkerWidget>::New();
widget->SetOutlineColor( <span style="color:Maroon">0</span><span style="color:Maroon">.9300</span>, <span style="color:Maroon">0</span><span style="color:Maroon">.5700</span>, <span style="color:Maroon">0</span><span style="color:Maroon">.1300</span> );
widget->SetOrientationMarker( axes );
widget->SetInteractor( renderWindowInteractor );
widget->SetViewport( <span style="color:Maroon">0</span><span style="color:Maroon">.0</span>, <span style="color:Maroon">0</span><span style="color:Maroon">.0</span>, <span style="color:Maroon">0</span><span style="color:Maroon">.4</span>, <span style="color:Maroon">0</span><span style="color:Maroon">.4</span> );
widget->SetEnabled( <span style="color:Maroon">1</span> );
widget->InteractiveOn();
renderer->ResetCamera();
renderWindow->Render();
<span style="color:Green">// Begin mouse interaction</span>
renderWindowInteractor->Start();
<span style="color:Blue">return</span> EXIT_SUCCESS;
}</pre><br>
best regards<br>
Jochen
<br><hr align="left" width="300">
View this message in context: <a href="http://vtk.1045678.n5.nabble.com/How-to-forward-mouse-move-event-to-polydata-algorithm-and-get-there-direction-of-projection-tp5714021p5714029.html" target="_blank">Re: How to forward mouse move event to polydata algorithm and get there direction of projection</a><div class="HOEnZb">
<div class="h5"><br>
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<br></blockquote></div><br></div>