Hi all.
I use the QQuickVTKItem module in my QtQuick pet-project, simple object rendering and even voxel rendering work fine!
But the trouble with 2d DICOM images 
I tried different solutions, and replacing the interactor and replacing the style itself, everything leads to a large list of warnings
Here is code below for reading DICOM files and rendering via vtkResliceImageViewer:
#ifndef MYVTKITEM_H
#define MYVTKITEM_H
#include "QQuickVTKItem.h"
class MyVtkItem : public QQuickVTKItem
{
public:
vtkUserData initializeVTK(vtkRenderWindow *renderWindow) override;
};
#endif // MYVTKITEM_H
#include "MyVtkItem.h"
#include <vtkActor.h>
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkMinimalStandardRandomSequence.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkObjectFactory.h>
#include <vtkPolyDataMapper.h>
#include <vtkPropPicker.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>
#include <vtkResliceImageViewer.h>
#include <vtkImageReader2.h>
#include <vtkDICOMDirectory.h>
#include <vtkGlobFileNames.h>
#include <vtkDICOMReader.h>
#include <vtkColorTransferFunction.h>
#include <vtkPiecewiseFunction.h>
#include <vtkVolumeProperty.h>
#include <vtkGPUVolumeRayCastMapper.h>
#include <vtkImageActor.h>
#include <vtkInteractorStyleRubberBandZoom.h>
#include <vtkInteractorStyleImage.h>
namespace
{
struct MyVtkData : vtkObject
{
static MyVtkData* New();
vtkTypeMacro(MyVtkData, vtkObject);
// Place all your persistant VTK objects here
};
vtkStandardNewMacro(MyVtkData);
}
QQuickVTKItem::vtkUserData MyVtkItem::initializeVTK(vtkRenderWindow *renderWindow)
{
auto vtk = vtkNew<MyVtkData>();
vtkNew<vtkRenderer> renderer;
renderWindow->SetSize(renderWindow->GetScreenSize());
renderWindow->SetWindowName("DICOM Images");
renderer->SetBackground(0,0.3,0);
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkImageReader2> dataSet = nullptr;
auto globFileNames = vtkSmartPointer<vtkGlobFileNames>::New();
globFileNames->SetDirectory("directory path");
globFileNames->AddFileNames("*.dcm");
auto directoryReader = vtkSmartPointer<vtkDICOMDirectory>::New();
directoryReader->RequirePixelDataOn();
directoryReader->SetInputFileNames(globFileNames->GetFileNames());
directoryReader->Update();
vtkNew<vtkDICOMReader> reader;
reader->SetFileNames(directoryReader->GetFileNamesForSeries(0));
reader->SetMemoryRowOrderToFileNative();
reader->Update();
dataSet = reader;
vtkNew<vtkResliceImageViewer> _reslicer;
_reslicer->SetupInteractor(renderWindow->GetInteractor());
_reslicer->SetInputData(dataSet->GetOutput());
_reslicer->SetRenderWindow(renderWindow);
_reslicer->SetSliceOrientationToXY();
_reslicer->SliceScrollOnMouseWheelOff();
_reslicer->SetRenderer(renderer);
_reslicer->SetResliceModeToAxisAligned();
_reslicer->SetColorLevel(40.0);
_reslicer->SetSlice(_reslicer->GetSliceMax() / 2);
_reslicer->SetColorWindow(4000.0);
_reslicer->SetResliceMode(0);
return vtk;
}
Src module:
https://gitlab.kitware.com/john-stone/vtk/-/tree/john-stone/QML/GUISupport/QtQuick
Everything works in the app Qt widgets, but not in QtQuick.Can you suggest what could be causing this?
