VTK 交互帖 日后整理用(1)

If I comment this line:

==

renWin->SetParentId(hWnd); //<-- hWnd : handle of my windows where I display my rendering

==

I intercept all events !!!

In fact, I create a view under my MFC project. Then I call my C++ method with handle of my View.

I don’t understand why if I display the rendered on my window (View under MFC) I can’t capture events?

Any Idea.

_____

De : toulgen [mailto:toul... @gmail.com ] Envoyé : lundi 6 juillet 2009 15:33 À : 'Will Schroeder' Cc : 'vtku... @vtk.org ' Objet : RE: [vtk-users] capture mouse event

No, I don’t receive answer.

I try this code :

My code:

========

vtkConeSource *cone = vtkConeSource::New();

cone->SetHeight( 3.0 );

cone->SetRadius( 1.0 );

cone->SetResolution( 10 );

vtkPolyDataMapper *coneMapper = vtkPolyDataMapper::New();

coneMapper->SetInputConnection( cone->GetOutputPort() );

vtkActor *coneActor = vtkActor::New();

coneActor->SetMapper( coneMapper );

vtkRenderer *ren1= vtkRenderer::New();

ren1->AddActor( coneActor );

ren1->AddActor( coneActor2 );

ren1->SetBackground( 0.1, 0.2, 0.4 );

vtkRenderWindow *renWin = vtkRenderWindow::New();

renWin->AddRenderer( ren1 );

renWin->SetSize( 300, 300 );

renWin->SetParentId(hWnd); //<-- hWnd : handle of my windows where I display my rendering

vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();

iren->SetRenderWindow(renWin);

vtkMyCallback *callb = vtkMyCallback::New();

vtkInteractorStyleUser *style = vtkInteractorStyleUser::New();

style->AddObserver(vtkCommand::AnyEvent, callb);

iren->SetInteractorStyle(style);

iren->Initialize();

//iren->Start(); //<- Not used

vtkMyCallback Class:

====================

class vtkMyCallback : public vtkCommand

{

public:

static vtkMyCallback *New()

{

return new vtkMyCallback;

}

virtual void Execute(vtkObject *caller, unsigned long Id, void* ptVal)

{

vtkInteractorStyleUser *style = static_cast< vtkInteractorStyleUser* >(caller);

switch( Id)

{

case vtkCommand::CharEvent: // <-- Never captured event

switch( style->GetChar() )

{

case 'h':

OutputDebugString("*********** >>> h <<<************** /n/n/n");

break;

}

break;

case vtkCommand::MouseWheelBackwardEvent: // <-- Never captured event

OutputDebugString("MouseWheelBackwardEvent /n");

break;

case vtkCommand::MouseWheelForwardEvent: // <-- Never captured event

OutputDebugString("MouseWheelForwardEvent /n");

break;

case vtkCommand::MouseMoveEvent: // <-- OK

OutputDebugString("MouseMoveEvent/n");

break;

case vtkCommand::LeftButtonPressEvent: // <-- OK

OutputDebugString("LeftButtonPressEvent /n");

break;

case vtkCommand::RightButtonPressEvent: // <-- OK

OutputDebugString("RightButtonPressEvent /n");

break;

}

}

};

I can intercept MouseMoveEvent, LeftButtonPressEvent and RightButtonPressEvent events. But never with this events: MouseWheelBackwardEvent, MouseWheelForwardEvent and CharEvent.

Have you any idea ? or examples ?

Thank you,

ToulGen

_____

De : Will Schroeder [mailto:will... @kitware.com ] Envoyé : mercredi 1 juillet 2009 12:53 À : toulgen Objet : Re: [vtk-developers] capture mouse event

Did you receive an answer? If not you have some studying to do :-) You will want to start with the interactor styles.

Will

On Thu, Jun 25, 2009 at 11:20 AM, toulgen <toul... @gmail.com > wrote:

Hi,

I use this pipeline to render volume.

My question is: how I can capture a mouse event? I want to zoom in/zoom out my volume with mouse wheel scrolls.

Thx,

ToulGen

My code :

========

this->m_vtkpRendererVolume = vtkRenderer::New();

this->m_vtkpRenWin = vtkRenderWindow::New();

this->m_vtkpRenWin->DoubleBufferOn();

this->m_vtkpRenWin->SetDesiredUpdateRate(1);

this->m_vtkpRenWin->SetSize(this->m_Width, this->m_Height);

this->m_vtkpRenWin->AddRenderer( this->m_vtkpRendererVolume );

this->m_vtkpRenWin ->SetParentId(hWnd);

// Make interactive

vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();

iren->SetStillUpdateRate(1);

iren->SetDesiredUpdateRate(10);

iren->SetRenderWindow(this->m_vtkpRenWin);

// Standard transfer functions

...

vtkVolumeRayCastCompositeFunction *compositeFunction = vtkVolumeRayCastCompositeFunction::New();

compositeFunction->SetCompositeMethodToInterpolateFirst();

vtkVolumeRayCastMapper *volumeMapper = vtkVolumeRayCastMapper::New();

volumeMapper->SetVolumeRayCastFunction(compositeFunction);

volumeMapper->SetInput(this->m_vtkpVolume->GetOutput());

m_vtkpVolumeForDisplay = vtkVolume::New();

m_vtkpVolumeForDisplay->SetMapper(volumeMapper);

m_vtkpVolumeForDisplay->SetProperty(volumeProperty);

this->m_vtkpRendererVolume->AddVolume(m_vtkpVolumeForDisplay);

this->m_vtkpRenWin->Render();

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