[vtkusers] My interactor style doesn't work

[kenichiro yoshimi]

Hello,

It seems to work to change as follows:

#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkInteractorStyleImage.h>
#include <vtkDICOMImageReader.h>
#include <vtkObjectFactory.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

class MyStyle : public vtkInteractorStyleImage {
public:
  static MyStyle* New();
  vtkTypeMacro(MyStyle, vtkInteractorStyleImage);

  void OnLeftButtonDown() override {
    std::cout << "Left Button Clicked!" << std::endl;
    vtkInteractorStyleImage::OnLeftButtonDown();
  }

  void OnMouseMove() override {
    std::cout << "Mouse Moving!" << std::endl;
    vtkInteractorStyleImage::OnMouseMove();
  }
};

vtkStandardNewMacro(MyStyle);

int main(int argc, char* argv[])
{
  // Verify input arguments
  if ( argc != 2 )
  {
    std::cout << "Usage: " << argv[0]
              << " Filename(.img)" << std::endl;
    return EXIT_FAILURE;
  }

  std::string inputFilename = argv[1];

  // Read all the DICOM files in the specified directory.
  vtkSmartPointer<vtkDICOMImageReader> reader =
    vtkSmartPointer<vtkDICOMImageReader>::New();
  reader->SetFileName(inputFilename.c_str());
  reader->Update();

  // Visualize
  vtkSmartPointer<vtkImageViewer2> imageViewer =
    vtkSmartPointer<vtkImageViewer2>::New();
  imageViewer->SetInputConnection(reader->GetOutputPort());
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  vtkSmartPointer<MyStyle> style = vtkSmartPointer<MyStyle>::New();

  imageViewer->SetupInteractor(renderWindowInteractor);
  imageViewer->Render();
  imageViewer->GetRenderer()->ResetCamera();
  imageViewer->Render();

  renderWindowInteractor->SetInteractorStyle(style);
  style->SetDefaultRenderer(imageViewer->GetRenderer());
  style->SetCurrentRenderer(imageViewer->GetRenderer());

  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

Hope that helps you.

2017-10-21 20:42 GMT+09:00 arwtyxouymz <arw.tyx-ouy_mz at ezweb.ne.jp>:
> Hi,
>
> I'm trying to create my style subclass of vtkInteractorStyleImage.
> I want to callback click event and mouse move event.
>
> I referred to this example to display my dicom image,
> https://lorensen.github.io/VTKExamples/site/Cxx/IO/ReadDICOM/
>
> and referred to this to create my style class.
> https://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/MarkKeypoints
>
> DICOM image appear, but my mouse event does not work.
> Following my code:
>
> class MyStyle : public vtkInteractorStyleImage {
> public:
>     static MyStyle* New() {
>         return nullptr;
>     }
>     vtkTypeMacro(MyStyle, vtkInteractorStyleImage);
>
>     void OnLeftButtonDown() override {
>         std::cout << "Left Button Clicked!" << std::endl;
>         vtkInteractorStyleImage::OnLeftButtonDown();
>     }
>
>     void OnMouseMove() override {
>         std::cout << "Mouse Moving!" << std::endl;
>         vtkInteractorStyleImage::OnMouseMove();
>     }
>
> };
>
>
> int main(int argc, char** argv) {
>     // Verify input arguments
>     if ( argc != 2 )
>     {
>         std::cout << "Usage: " << argv[0]
>                   << " Filename(.img)" << std::endl;
>         return EXIT_FAILURE;
>     }
>     std::string inputFilename = argv[1];
>
>     vtkSmartPointer<vtkDICOMImageReader> reader =
>             vtkSmartPointer<vtkDICOMImageReader>::New();
>     reader->SetFileName(inputFilename.c_str());
>     reader->Update();
>
>     vtkSmartPointer<vtkImageViewer2> imageViewer =
>             vtkSmartPointer<vtkImageViewer2>::New();
>     imageViewer->SetInputConnection(reader->GetOutputPort());
>
>     vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
>             vtkSmartPointer<vtkRenderWindowInteractor>::New();
>     vtkSmartPointer<MyStyle> style = vtkSmartPointer<MyStyle>::New();
>     renderWindowInteractor->SetInteractorStyle( style );
>
>     imageViewer->SetupInteractor(renderWindowInteractor);
>     imageViewer->Render();
>     imageViewer->GetRenderer()->ResetCamera();
>     imageViewer->Render();
>
>     renderWindowInteractor->Start();
>
>
>     return EXIT_SUCCESS;
>
> }
>
>
> How change my code?
> please help me!
>
>
>
> --
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