医学四视图-002-四视图实现

Posted 2021-09-16 DreamLife.

​ 本篇文章将参考大神们的足迹，模仿这实现四视图。

电梯

• 1 参考资料
• 2 参考代码
• 3 自己的代码
• 4 运行效果
• ☞ 源码

1 参考资料

​ 其实说四视图是不是很不专业，是不是应该叫多平面重建及三维切片显示呀。参考资料如下：

参考：https://blog.csdn.net/hit1524468/article/details/113446783

​ https://www.cnblogs.com/fuzhuoxin/p/12513872.html

​ https://blog.csdn.net/weixin_38500110/article/details/78807196

2 参考代码

#ifndef QtVTKRenderWindows_H
#define QtVTKRenderWindows_H
 
#include "vtkSmartPointer.h"
#include "vtkResliceImageViewer.h"
#include "vtkImagePlaneWidget.h"
#include "vtkDistanceWidget.h"
#include "vtkResliceImageViewerMeasurements.h"
#include <QMainWindow>
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkInteractionStyle)
VTK_MODULE_INIT(vtkRenderingFreeType)
 
// Forward Qt class declarations
class Ui_QtVTKRenderWindows;
 
class QtVTKRenderWindows : public QMainWindow
{
  Q_OBJECT
public:
 
  // Constructor/Destructor
  QtVTKRenderWindows(int argc, char *argv[]);
  ~QtVTKRenderWindows() override {}
 
public slots:
 
  virtual void slotExit();
  virtual void resliceMode(int);
  virtual void thickMode(int);
  virtual void SetBlendModeToMaxIP();
  virtual void SetBlendModeToMinIP();
  virtual void SetBlendModeToMeanIP();
  virtual void SetBlendMode(int);
  virtual void ResetViews();
  virtual void Render();
  virtual void AddDistanceMeasurementToView1();
  virtual void AddDistanceMeasurementToView( int );
 
protected:
  vtkSmartPointer< vtkResliceImageViewer > riw[3];
  vtkSmartPointer< vtkImagePlaneWidget > planeWidget[3];
  vtkSmartPointer< vtkDistanceWidget > DistanceWidget[3];
  vtkSmartPointer< vtkResliceImageViewerMeasurements > ResliceMeasurements;
 
protected slots:
 
private:
 
  // Designer form
  Ui_QtVTKRenderWindows *ui;
};
 
#endif // QtVTKRenderWindows_H

#include "ui_QtVTKRenderWindows.h"
#include "QtVTKRenderWindows.h"
 
#include "vtkBoundedPlanePointPlacer.h"
#include "vtkCellPicker.h"
#include "vtkCommand.h"
#include "vtkDICOMImageReader.h"
#include "vtkDistanceRepresentation.h"
#include "vtkDistanceRepresentation2D.h"
#include "vtkDistanceWidget.h"
#include <vtkGenericOpenGLRenderWindow.h>
#include "vtkHandleRepresentation.h"
#include "vtkImageData.h"
#include "vtkImageMapToWindowLevelColors.h"
#include "vtkImageSlabReslice.h"
#include "vtkInteractorStyleImage.h"
#include "vtkLookupTable.h"
#include "vtkPlane.h"
#include "vtkPlaneSource.h"
#include "vtkPointHandleRepresentation2D.h"
#include "vtkPointHandleRepresentation3D.h"
#include "vtkProperty.h"
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include "vtkRenderWindowInteractor.h"
#include "vtkResliceImageViewer.h"
#include "vtkResliceCursorLineRepresentation.h"
#include "vtkResliceCursorThickLineRepresentation.h"
#include "vtkResliceCursorWidget.h"
#include "vtkResliceCursorActor.h"
#include "vtkResliceCursorPolyDataAlgorithm.h"
#include "vtkResliceCursor.h"
#include "vtkMetaImageReader.h"
#include "vtkResliceImageViewerMeasurements.h"
 
//----------------------------------------------------------------------------
class vtkResliceCursorCallback : public vtkCommand
{
public:
  static vtkResliceCursorCallback *New()
  { return new vtkResliceCursorCallback; }
 
  void Execute( vtkObject *caller, unsigned long ev,
                void *callData ) override
  {
 
    if (ev == vtkResliceCursorWidget::WindowLevelEvent ||
        ev == vtkCommand::WindowLevelEvent ||
        ev == vtkResliceCursorWidget::ResliceThicknessChangedEvent)
    {
      // Render everything
      for (int i = 0; i < 3; i++)
      {
        this->RCW[i]->Render();
      }
      this->IPW[0]->GetInteractor()->GetRenderWindow()->Render();
      return;
    }
 
    vtkImagePlaneWidget* ipw =
      dynamic_cast< vtkImagePlaneWidget* >( caller );
    if (ipw)
    {
      double* wl = static_cast<double*>( callData );
 
      if ( ipw == this->IPW[0] )
      {
        this->IPW[1]->SetWindowLevel(wl[0],wl[1],1);
        this->IPW[2]->SetWindowLevel(wl[0],wl[1],1);
      }
      else if( ipw == this->IPW[1] )
      {
        this->IPW[0]->SetWindowLevel(wl[0],wl[1],1);
        this->IPW[2]->SetWindowLevel(wl[0],wl[1],1);
      }
      else if (ipw == this->IPW[2])
      {
        this->IPW[0]->SetWindowLevel(wl[0],wl[1],1);
        this->IPW[1]->SetWindowLevel(wl[0],wl[1],1);
      }
    }
 
    vtkResliceCursorWidget *rcw = dynamic_cast<
      vtkResliceCursorWidget * >(caller);
    if (rcw)
    {
      vtkResliceCursorLineRepresentation *rep = dynamic_cast<
        vtkResliceCursorLineRepresentation * >(rcw->GetRepresentation());
      // Although the return value is not used, we keep the get calls
      // in case they had side-effects
      rep->GetResliceCursorActor()->GetCursorAlgorithm()->GetResliceCursor();
      for (int i = 0; i < 3; i++)
      {
        vtkPlaneSource *ps = static_cast< vtkPlaneSource * >(
            this->IPW[i]->GetPolyDataAlgorithm());
        ps->SetOrigin(this->RCW[i]->GetResliceCursorRepresentation()->
                                          GetPlaneSource()->GetOrigin());
        ps->SetPoint1(this->RCW[i]->GetResliceCursorRepresentation()->
                                          GetPlaneSource()->GetPoint1());
        ps->SetPoint2(this->RCW[i]->GetResliceCursorRepresentation()->
                                          GetPlaneSource()->GetPoint2());
 
        // If the reslice plane has modified, update it on the 3D widget
        this->IPW[i]->UpdatePlacement();
      }
    }
 
    // Render everything
    for (int i = 0; i < 3; i++)
    {
      this->RCW[i]->Render();
    }
    this->IPW[0]->GetInteractor()->GetRenderWindow()->Render();
  }
 
  vtkResliceCursorCallback() {}
  vtkImagePlaneWidget* IPW[3];
  vtkResliceCursorWidget *RCW[3];
};
 
 
QtVTKRenderWindows::QtVTKRenderWindows( int vtkNotUsed(argc), char *argv[])
{
  this->ui = new Ui_QtVTKRenderWindows;
  this->ui->setupUi(this);
#if 0
  vtkSmartPointer< vtkDICOMImageReader > reader = vtkSmartPointer<vtkDICOMImageReader >::New();
//  reader->SetDirectoryName(argv[1]);
  reader->SetDirectoryName("/home/hsw/Qt_workSpace/build-RSVtkLearn_FourPaneViewer-Desktop_Qt_5_12_2_GCC_64bit-Debug/DCM/");
#else
    vtkSmartPointer<vtkMetaImageReader> reader = vtkSmartPointer<vtkMetaImageReader>::New();
    reader->SetFileName("/home/hsw/Downloads/brain/brain.mhd");
#endif
  reader->Update();
  int imageDims[3];
  reader->GetOutput()->GetDimensions(imageDims);
 
  for (int i = 0; i < 3; i++)
  {
    riw[i] = vtkSmartPointer< vtkResliceImageViewer >::New();
    vtkNew<vtkGenericOpenGLRenderWindow> renderWindow;
    riw[i]->SetRenderWindow(renderWindow);
  }
 
  this->ui->view1->SetRenderWindow(riw[0]->GetRenderWindow());
  riw[0]->SetupInteractor(this->ui->view1->GetRenderWindow()->GetInteractor());
 
  this->ui->view2->SetRenderWindow(riw[1]->GetRenderWindow());
  riw[1]->SetupInteractor(this->ui->view2->GetRenderWindow()->GetInteractor());
 
  this->ui->view3->SetRenderWindow(riw[2]->GetRenderWindow());
  riw[2]->SetupInteractor(this->ui->view3->GetRenderWindow()->GetInteractor());
 
  for (int i = 0; i < 3; i++)
  {
    // make them all share the same reslice cursor object.
    vtkResliceCursorLineRepresentation *rep = vtkResliceCursorLineRepresentation::SafeDownCast(riw[i]->GetResliceCursorWidget()->GetRepresentation());
    riw[i]->SetResliceCursor(riw[0]->GetResliceCursor());
 
    rep->GetResliceCursorActor()->GetCursorAlgorithm()->SetReslicePlaneNormal(i);
 
    riw[i]->SetInputData(reader->GetOutput());
    riw[i]->SetSliceOrientation(i);
    riw[i]->SetResliceModeToAxisAligned();
  }
 
  vtkSmartPointer<vtkCellPicker> picker = vtkSmartPointer<vtkCellPicker>::New();
  picker->SetTolerance(0.005);
 
  vtkSmartPointer<vtkProperty> ipwProp = vtkSmartPointer<vtkProperty>::New();
 
  vtkSmartPointer< vtkRenderer > ren = vtkSmartPointer< vtkRenderer >::New();
 
  vtkNew<vtkGenericOpenGLRenderWindow> renderWindow;
  this->ui->view4->SetRenderWindow(renderWindow);
  this->ui->view4->GetRenderWindow()->AddRenderer(ren);
  vtkRenderWindowInteractor *iren = this->ui->view4->GetInteractor();
 
  for (int i = 0; i < 3; i++)
  {
    planeWidget[i] = vtkSmartPointer<vtkImagePlaneWidget>::New();
    planeWidget[i]->SetInteractor( iren );
    planeWidget[i]->SetPicker(picker);
    planeWidget[i]->RestrictPlaneToVolumeOn();
    double color[3] = {0, 0, 0};
    color[i] = 1;
    planeWidget[i]->GetPlaneProperty()->SetColor(color);
 
    color[0] /= 4.0;
    color[1] /= 4.0;
    color[2] /= 4.0;
    riw[i]->GetRenderer()->SetBackground( color );
 
    planeWidget[i]->SetTexturePlaneProperty(ipwProp);
    planeWidget[i]->TextureInterpolateOff();
    planeWidget[i]->SetResliceInterpolateToLinear();
    planeWidget[i]->SetInputConnection(reader->GetOutputPort());
    planeWidget[i]->SetPlaneOrientation(i);
    planeWidget[i]->SetSliceIndex(imageDims[i]/2);
    planeWidget[i]->DisplayTextOn();
    planeWidget[i]->SetDefaultRenderer(ren);
    planeWidget[i]->SetWindowLevel(1358, -27);
    planeWidget[i]->On();
    planeWidget[i]->InteractionOn();
  }
 
  vtkSmartPointer<vtkResliceCursorCallback> cbk = vtkSmartPointer<vtkResliceCursorCallback>::New();
 
  for (int i = 0; i < 3; i++)
  {
    cbk->IPW[i] = planeWidget[i];
    cbk->RCW[i] = riw[i]->GetResliceCursorWidget();
    riw[i]->GetResliceCursorWidget()->AddObserver(
        vtkResliceCursorWidget::ResliceAxesChangedEvent, cbk );
    riw[i]->GetResliceCursorWidget()->AddObserver(
        vtkResliceCursorWidget::WindowLevelEvent, cbk );
    riw[i]->GetResliceCursorWidget()->AddObserver(
        vtkResliceCursorWidget::ResliceThicknessChangedEvent, cbk );
    riw[i]->GetResliceCursorWidget()->AddObserver(
        vtkResliceCursorWidget::ResetCursorEvent, cbk );
    riw[i]->GetInteractorStyle()->AddObserver(
        vtkCommand::WindowLevelEvent, cbk );
 
    // Make them all share the same color map.
    riw[i]->SetLookupTable(riw[0]->GetLookupTable());
    planeWidget[i]->GetColorMap()->SetLookupTable(riw[0]->GetLookupTable());
    //planeWidget[i]->GetColorMap()->SetInput(riw[i]->GetResliceCursorWidget()->GetResliceCursorRepresentation()->GetColorMap()->GetInput());
    planeWidget[i]->SetColorMap(riw[i]->GetResliceCursorWidget()->GetResliceCursorRepresentation()->GetColorMap());
 
  }
 
  this->ui->view1->show();
  this->ui->view2->show();
  this->ui->view3->show();
 
  // Set up action signals and slots
  connect(this->ui->actionExit, SIGNAL(triggered()), this, SLOT(slotExit()));
  connect(this->ui->resliceModeCheckBox, SIGNAL(stateChanged(int)), this, SLOT(resliceMode(int)));
  connect(this->ui->thickModeCheckBox, SIGNAL(stateChanged(int)), this, SLOT(thickMode(int)));
  this->ui->thickModeCheckBox->setEnabled(0);
 
  connect(this->ui->radioButton_Max, SIGNAL(pressed()), this, SLOT(SetBlendModeToMaxIP()));
  connect(this->ui->radioButton_Min, SIGNAL(pressed()), this, SLOT(SetBlendModeToMinIP()));
  connect(this->ui->radioButton_Mean, SIGNAL(pressed()), this, SLOT(SetBlendModeToMeanIP()));
  this->ui->blendModeGroupBox->setEnabled(0);
 
  connect(this->ui->resetButton, SIGNAL(pressed()), this, SLOT(ResetViews()));
  connect(this->ui->AddDistance1Button, SIGNAL(pressed()), this, SLOT(AddDistanceMeasurementToView1()));
};
 
void QtVTKRenderWindows::slotExit()
{
  qApp->exit();
}
 
void QtVTKRenderWindows::resliceMode(int mode)
{
  this->ui->thickModeCheckBox->setEnabled(mode ? 1 : 0);
  this->ui->blendModeGroupBox->setEnabled(mode ? 1 : 0);
 
  for (int i = 0; i < 3; i++)
  {
    riw[i]->SetResliceMode(mode ? 1 : 0);
    riw[i]->GetRenderer()->ResetCamera();
    riw[i]->Render();
  }
}
 
void QtVTKRenderWindows::thickMode(int mode)
{
  for (int i = 0; i < 3; i++)
  {
    riw[i]->SetThickMode(mode ? 1 : 0);
    riw[i]->Render();
  }
}
 
void QtVTKRenderWindows::SetBlendMode(int m)
{
  for (int i = 0; i < 3; i++)
  {
    vtkImageSlabReslice *thickSlabReslice = vtkImageSlabReslice::SafeDownCast(
        vtkResliceCursorThickLineRepresentation::SafeDownCast(
          riw[i]->GetResliceCursorWidget()->GetRepresentation())->GetReslice());
    thickSlabReslice->SetBlendMode(m);
    riw[i]->Render();
  }
}
 
void QtVTKRenderWindows::SetBlendModeToMaxIP()
{
  this->SetBlendMode(VTK_IMAGE_SLAB_MAX);
}
 
void QtVTKRenderWindows::SetBlendModeToMinIP()
{
  this->SetBlendMode(VTK_IMAGE_SLAB_MIN);
}
 
void QtVTKRenderWindows::SetBlendModeToMeanIP()
{
  this->SetBlendMode(VTK_IMAGE_SLAB_MEAN);
}
 
void QtVTKRenderWindows::ResetViews()
{
  // Reset the reslice image views
  for (int i = 0; i < 3; i++)
  {
    riw[i]->Reset();
  }
 
  // Also sync the Image plane widget on the 3D top right view with any
  // changes to the reslice cursor.
  for (int i = 0; i < 3; i++)
  {
    vtkPlaneSource *ps = static_cast< vtkPlaneSource * >(
        planeWidget[i]->GetPolyDataAlgorithm());
    ps->SetNormal(riw[0]->GetResliceCursor()->GetPlane(i)->GetNormal());
    ps->SetCenter(riw[0]->GetResliceCursor()->GetPlane(i)->GetOrigin());
 
    // If the reslice plane has modified, update it on the 3D widget
    this->planeWidget[i]->UpdatePlacement();
  }
 
  // Render in response to changes.
  this->Render();
}
 
void QtVTKRenderWindows::Render()
{
  for (int i = 0; i < 3; i++)
  {
    riw[i]->Render();
  }
  this->ui->view3->GetRenderWindow()->Render();
}
 
void QtVTKRenderWindows::AddDistanceMeasurementToView1()
{
  this->AddDistanceMeasurementToView(1);
}
 
void QtVTKRenderWindows::AddDistanceMeasurementToView(int i)
{
  // remove existing widgets.
  if (this->DistanceWidget[i])
  {
    this->DistanceWidget[i]->SetEnabled(0);
    this->DistanceWidget[i] = nullptr;
  }
 
  // add new widget
  this->DistanceWidget[i] = vtkSmartPointer< vtkDistanceWidget >::New();
  this->DistanceWidget[i]->SetInteractor(
    this->riw[i]->GetResliceCursorWidget()->GetInteractor());
 
  // Set a priority higher than our reslice cursor widget
  this->DistanceWidget[i]->SetPriority(
    this->riw[i]->GetResliceCursorWidget()->GetPriority() + 0.01);
 
  vtkSmartPointer< vtkPointHandleRepresentation2D > handleRep =
    vtkSmartPointer< vtkPointHandleRepresentation2D >::New();
  vtkSmartPointer< vtkDistanceRepresentation2D > distanceRep =
    vtkSmartPointer< vtkDistanceRepresentation2D >::New();
  distanceRep->SetHandleRepresentation(handleRep);
  this->DistanceWidget[i]->SetRepresentation(distanceRep);
  distanceRep->InstantiateHandleRepresentation();
  distanceRep->GetPoint1Representation()->SetPointPlacer(riw[i]->GetPointPlacer());
  distanceRep->GetPoint2Representation()->SetPointPlacer(riw[i]->GetPointPlacer());
 
  // Add the distance to the list of widgets whose visibility is managed based
  // on the reslice plane by the ResliceImageViewerMeasurements class
  this->riw[i]->GetMeasurements()->AddItem(this->DistanceWidget[i]);
 
  this->DistanceWidget[i]->CreateDefaultRepresentation();
  this->DistanceWidget[i]->EnabledOn();
}

3 自己的代码

#ifndef IMAGEMANAGE_H
#define IMAGEMANAGE_H

#include <QWidget>
#include <QSplitter>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QGridLayout>
#include <QResizeEvent>
#include <QtDebug>

#include "QVTKOpenGLWidget.h"               //新版本，旧版QVTKWidget
#include "vtkAutoInit.h"
#include "vtkSmartPointer.h"
#include "vtkResliceImageViewer.h"
#include "vtkImagePlaneWidget.h"
#include "vtkDistanceWidget.h"
#include "vtkResliceImageViewerMeasurements.h"
#include "vtkBoundedPlanePointPlacer.h"
#include "vtkCellPicker.h"
#include "vtkCommand.h"
#include "vtkDICOMImageReader.h"
#include "vtkDistanceRepresentation.h"
#include "vtkDistanceRepresentation2D.h"
#include "vtkDistanceWidget.h"
#include <vtkGenericOpenGLRenderWindow.h>
#include "vtkHandleRepresentation.h"
#include "vtkImageData.h"
#include "vtkImageMapToWindowLevelColors.h"
#include "vtkImageSlabReslice.h"
#include "vtkInteractorStyleImage.h"
#include "vtkLookupTable.h"
#include "vtkPlane.h"
#include "vtkPlaneSource.h"
#include "vtkPointHandleRepresentation2D.h"
#include "vtkPointHandleRepresentation3D.h"
#include "vtkProperty.h"
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include "vtkRenderWindowInteractor.h"
#include "vtkResliceImageViewer.h"
#include "vtkResliceCursorLineRepresentation.h"
#include "vtkResliceCursorThickLineRepresentation.h"
#include "vtkResliceCursorWidget.h"
#include "vtkResliceCursorActor.h"
#include "vtkResliceCursorPolyDataAlgorithm.h"
#include "vtkResliceCursor.h"
#include "vtkResliceImageViewerMeasurements.h"


class vtkResliceCursorCallback;

namespace Ui {
class ImageManage;
}

class ImageManage : public QWidget
{
    Q_OBJECT

public:
    explicit ImageManage(QWidget *parent = nullptr);
    ~ImageManage();
    void setCurrentTab(int temp =0);
public slots:
    /**
     * @brief slot_ReaderDICOMImage
     * @param fn
     * 读取DICOM文件
     */
    void slot_ReaderDICOMImage(const char* fn);
protected:
    void resizeEvent(QResizeEvent *event) override;
private:
    Ui::ImageManage *ui;
    QSplitter *mSplitterMain = nullptr;
    QSplitter *mSplitterVertical = nullptr;
    QSplitter *mSplitterUp = nullptr;
    QSplitter *mSplitterDown = nullptr;
    double color[3] = {0,0,0};                                              //颜色
    vtkSmartPointer<vtkDICOMImageReader> reader = nullptr;                  //读取DICOM文件
    int imageDims[3] = {0};                                                 //暂时不理解
    vtkSmartPointer< vtkResliceImageViewer > riw[3];                        //三个二维视图
    vtkSmartPointer< vtkImagePlaneWidget > planeWidget[3];
    vtkSmartPointer< vtkDistanceWidget > DistanceWidget[3];                 //测试距离的，暂时没有移植，无用
    vtkSmartPointer< vtkResliceImageViewerMeasurements > ResliceMeasurements;   //不知道干啥，没有用到

    vtkSmartPointer<vtkProperty> ipwProp;                                       //属性
    vtkSmartPointer<vtkCellPicker> picker;                                      //拾取器
    vtkSmartPointer< vtkRenderer > ren;                                         //3D渲染器
    vtkSmartPointer<vtkResliceCursorCallback> cbk;                              //回调类

};

#endif // IMAGEMANAGE_H

#include "imagemanage.h"
#include "ui_imagemanage.h"

class vtkResliceCursorCallback : public vtkCommand
{
public:
  static vtkResliceCursorCallback *New()
  { return new vtkResliceCursorCallback; }
  void Execute( vtkObject *caller, unsigned long ev, void *callData ) override
  {
    if (ev == vtkResliceCursorWidget::WindowLevelEvent || ev == vtkCommand::WindowLevelEvent || ev == vtkResliceCursorWidget::ResliceThicknessChangedEvent)
    {
      // Render everything
      for (int i = 0; i < 3; i++)
      {
        this->RCW[i]->Render();
      }
      this->IPW[0]->GetInteractor()->GetRenderWindow()->Render();
//      return;                                                                 //这里需要注释掉，不然呵呵呵，返回了，还搞个毛线
    }
    vtkImagePlaneWidget* ipw = dynamic_cast< vtkImagePlaneWidget* >( caller );
//    qDebug() << "11" << caller << ipw;
    if (ipw)
    {
      double* wl = static_cast<double*>( callData );

      if ( ipw == this->IPW[0] )
      {
        this->IPW[1]->SetWindowLevel(wl[0],wl[1],1);
        this->IPW[2]->SetWindowLevel(wl[0],wl[1],1);
      }
      else if( ipw == this->IPW[1] )
      {
        this->IPW[0]->SetWindowLevel(wl[0],wl[1],1);
        this->IPW[2]->SetWindowLevel(wl[0],wl[1],1);
      }
      else if (ipw == this->IPW[2])
      {
        this->IPW[0]->SetWindowLevel(wl[0],wl[1],1);
        this->IPW[1]->SetWindowLevel(wl[0],wl[1],1);
      }
    }

    vtkResliceCursorWidget *rcw = dynamic_cast<vtkResliceCursorWidget * >(caller);
//    qDebug() << "22" << caller << rcw;
    if (rcw)
    {
      vtkResliceCursorLineRepresentation *rep = dynamic_cast<
        vtkResliceCursorLineRepresentation * >(rcw->GetRepresentation());
      // Although the return value is not used, we keep the get calls
      // in case they had side-effects
      rep->GetResliceCursorActor()->GetCursorAlgorithm()->GetResliceCursor();
      for (int i = 0; i < 3; i++)
      {
        vtkPlaneSource *ps = static_cast< vtkPlaneSource * >(this->IPW[i]->GetPolyDataAlgorithm());
        ps->SetOrigin(this->RCW[i]->GetResliceCursorRepresentation()->GetPlaneSource()->GetOrigin());
        ps->SetPoint1(this->RCW[i]->GetResliceCursorRepresentation()-> GetPlaneSource()->GetPoint1());
        ps->SetPoint2(this->RCW[i]->GetResliceCursorRepresentation()->GetPlaneSource()->GetPoint2());
        // If the reslice plane has modified, update it on the 3D widget
        this->IPW[i]->UpdatePlacement();
      }
    }

    // Render everything
    for (int i = 0; i < 3; i++)
    {
      this->RCW[i]->Render();
    }
    this->IPW[0]->GetInteractor()->GetRenderWindow()->Render();
  }

  vtkResliceCursorCallback() {}
  vtkImagePlaneWidget* IPW[3];
  vtkResliceCursorWidget *RCW[3];
};



static QPoint lastPos;
ImageManage::ImageManage(QWidget *parent) :QWidget(parent),ui(new Ui::ImageManage)
{
    ui->setupUi(this);
    /******************窗口大小分割*************************/
    mSplitterMain = new QSplitter(Qt::Horizontal,this);
    mSplitterVertical = new QSplitter(Qt::Vertical,mSplitterMain);
    mSplitterUp = new QSplitter(Qt::Horizontal,mSplitterVertical);
    mSplitterUp->addWidget(ui->widget_1);
    mSplitterUp->addWidget(ui->widget_2);
    mSplitterUp->setStretchFactor(0,1);
    mSplitterUp->setStretchFactor(1,1);
    mSplitterDown = new QSplitter(Qt::Horizontal,mSplitterVertical);
    mSplitterDown->addWidget(ui->widget_3);
    mSplitterDown->addWidget(ui->widget_4);
    mSplitterDown->setStretchFactor(0,1);
    mSplitterDown->setStretchFactor(1,1);
    mSplitterMain->insertWidget(0,mSplitterVertical);
    mSplitterMain->insertWidget(1,ui->widget_5);
    mSplitterMain->setStretchFactor(0,1);               //很魔性啊
}

ImageManage::~ImageManage()
{
    delete ui;
}

void ImageManage::setCurrentTab(int temp)
{
    Q_UNUSED(temp);
}
void ImageManage::slot_ReaderDICOMImage(const char *fn)
{
    if(!reader)
    {
        reader = vtkSmartPointer<vtkDICOMImageReader>::New();
    }
    reader->SetDirectoryName(fn);                              //这里主要，是文件夹哈，不是文件名
    reader->Update();                                          //得更新呀，惰性渲染
    reader->GetOutput()->GetDimensions(imageDims);             //还不理解,翻译为获取维度,注释掉以后三维中有影响
    for (auto i = 0; i < 3; i++)
    {
      riw[i] = vtkSmartPointer< vtkResliceImageViewer >::New();
      vtkNew<vtkGenericOpenGLRenderWindow> renderWindow;
      riw[i]->SetRenderWindow(renderWindow);
    }
//    ui->widget_1->SetRenderWindow(riw[0]->GetRenderWindow());
    riw[0]->SetupInteractor(ui->widget_1->GetRenderWindow()->GetInteractor());
    riw[0]->SetRenderWindow(ui->widget_1->GetRenderWindow());
//    ui->widget_2->SetRenderWindow(riw[1]->GetRenderWindow());
    riw[1]->SetupInteractor(ui->widget_2->GetRenderWindow()->GetInteractor());
    riw[1]->SetRenderWindow(ui->widget_2->GetRenderWindow());
//    ui->widget_3->SetRenderWindow(riw[2]->GetRenderWindow());
    riw[2]->SetRenderWindow(ui->widget_3->GetRenderWindow());
    riw[2]->SetupInteractor(ui->widget_3->GetRenderWindow()->GetInteractor());
    for (int i = 0; i < 3; i++)
    {
      // make them all share the same reslice cursor object.
      vtkResliceCursorLineRepresentation *rep =vtkResliceCursorLineRepresentation::SafeDownCast(riw[i]->GetResliceCursorWidget()->GetRepresentation());
      riw[i]->SetResliceCursor(riw[0]->GetResliceCursor());
      rep->GetResliceCursorActor()->GetCursorAlgorithm()->SetReslicePlaneNormal(i);
      riw[i]->SetInputData(reader->GetOutput());
      riw[i]->SetSliceOrientation(i);
      riw[i]->SetResliceModeToAxisAligned();
    }
    picker = vtkSmartPointer<vtkCellPicker>::New();
    picker->SetTolerance(0.005);
    ipwProp = vtkSmartPointer<vtkProperty>::New();
    ren = vtkSmartPointer< vtkRenderer >::New();
    ui->widget_4->GetRenderWindow()->AddRenderer(ren);
    for (int i = 0; i < 3; i++)
    {
      planeWidget[i] = vtkSmartPointer<vtkImagePlaneWidget>::New();
      planeWidget[i]->SetInteractor( ui->widget_4->GetInteractor() );
      planeWidget[i]->SetPicker(picker);
      planeWidget[i]->RestrictPlaneToVolumeOn();
      color[0] = 0;
      color[1] = 0;
      color[2] = 0;
      color[i] = 1;
      planeWidget[i]->GetPlaneProperty()->SetColor(color);
      color[0] = 0;
      color[1] = 0;
      color[2] = 0;
      riw[i]->GetRenderer()->SetBackground( color );
      planeWidget[i]->SetTexturePlaneProperty(ipwProp);
      planeWidget[i]->TextureInterpolateOff();
      planeWidget[i]->SetResliceInterpolateToLinear();
      planeWidget[i]->SetInputConnection(reader->GetOutputPort());
      planeWidget[i]->SetPlaneOrientation(i);
      planeWidget[i]->SetSliceIndex(imageDims[i]/2);
      planeWidget[i]->DisplayTextOn();
      planeWidget[i]->SetDefaultRenderer(ren);
      planeWidget[i]->SetWindowLevel(1358, -27);
      planeWidget[i]->On();
      planeWidget[i]->InteractionOn();
    }
    cbk = vtkSmartPointer<vtkResliceCursorCallback>::New();
    for (int i = 0; i < 3; i++)
    {
      cbk->IPW[i] = planeWidget[i];
      cbk->RCW[i] = riw[i]->GetResliceCursorWidget();
      riw[i]->GetResliceCursorWidget()->AddObserver(vtkResliceCursorWidget::ResliceAxesChangedEvent, cbk );
      riw[i]->GetResliceCursorWidget()->AddObserver(vtkResliceCursorWidget::WindowLevelEvent, cbk );
      riw[i]->GetResliceCursorWidget()->AddObserver(vtkResliceCursorWidget::ResliceThicknessChangedEvent, cbk );
      riw[i]->GetResliceCursorWidget()->AddObserver(vtkResliceCursorWidget::ResetCursorEvent, cbk );
      riw[i]->GetInteractorStyle()->AddObserver(vtkCommand::WindowLevelEvent, cbk );
      // Make them all share the same color map.
      riw[i]->SetLookupTable(riw[0]->GetLookupTable());
      planeWidget[i]->GetColorMap()->SetLookupTable(riw[0]->GetLookupTable());
      //planeWidget[i]->GetColorMap()->SetInput(riw[i]->GetResliceCursorWidget()->GetResliceCursorRepresentation()->GetColorMap()->GetInput());
      planeWidget[i]->SetColorMap(riw[i]->GetResliceCursorWidget()->GetResliceCursorRepresentation()->GetColorMap());

    }
//    ui->widget_1->GetRenderWindow()->Render();
//    ui->widget_2->GetRenderWindow()->Render();
//    ui->widget_3->GetRenderWindow()->Render();
//    ui->widget_4->GetRenderWindow()->Render();

    //十字线
    for (int i = 0; i < 3; i++)
      {
        riw[i]->SetResliceMode(1);
        riw[i]->GetRenderer()->ResetCamera();
        riw[i]->Render();
      }
// 还不知道干啥
//    for (int i = 0; i < 3; i++)
//      {
//        riw[i]->SetThickMode(1);
//        riw[i]->Render();
//      }

//    for (int i = 0; i < 3; i++)
//      {
//        vtkImageSlabReslice *thickSlabReslice = vtkImageSlabReslice::SafeDownCast(
//            vtkResliceCursorThickLineRepresentation::SafeDownCast(
//              riw[i]->GetResliceCursorWidget()->GetRepresentation())->GetReslice());
//        thickSlabReslice->SetBlendMode(1);
//        riw[i]->Render();
//      }


}

void ImageManage::resizeEvent(QResizeEvent *event)
{
    Q_UNUSED(event);
    mSplitterMain->resize(this->size());
}

4 运行效果

☞ 源码

源码链接：https://github.com/DreamLife-Jianwei/Qt-Vtk

使用方法：☟☟☟

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