VTK：VTK嵌入MFC成功

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mb5ff982de32716 2015-05-21 09:56:00

VTK作为医学显示库，得到较多使用。作为较为上层的设计，对OpenGL进行了封装，并且有Windows、Linux、安卓等开发版本，可移植性较强。

不过VES暂时没有编译成功。

以下是嵌入MFC-IDC代码，有个缺陷，暂时没能修改。

代码：

showPointsInVtk(short* &depthImage, int HeightDepth, int WidthDepth,int IDCX)
{

  //double arr[3];
  vtkPoints * points = vtkPoints::New();
  int n = 0; int idx = 0; int Length = 3 * HeightDepth*WidthDepth;
  //首先读取点云数据到点表points同时指定点对应的id:
  for (int i = 0; i < HeightDepth; ++i){
    int LastPixel = i* WidthDepth;
    for (int j = 0; j < WidthDepth; ++j){
      int y = depthImage[3 * (j + LastPixel)];
      int x = depthImage[3 * (j + LastPixel) +1];
      int z = depthImage[3 * (j + LastPixel) +2];
      points->InsertPoint(n, x, y, z);
      n++;
    }
  }
  printf("%d\n", n);

  vtkPolyVertex * polyvertex = vtkPolyVertex::New();
  polyvertex->GetPointIds()->SetNumberOfIds(n);

        int i = 0; //建立拓扑关系
        for (i = 0; i < n; i++){
    polyvertex->GetPointIds()->SetId(i, i);
  }

  vtkUnstructuredGrid * grid = vtkUnstructuredGrid::New();
  grid->SetPoints(points);
  grid->InsertNextCell(polyvertex->GetCellType(),
    polyvertex->GetPointIds());

  vtkDataSetMapper *map1 = vtkDataSetMapper::New();
  map1->SetInputData(grid);

  vtkActor *actor1 = vtkActor::New();
  actor1->SetMapper(map1);
  actor1->GetProperty()->SetColor(0.194, 0.562, 0.75);

  vtkRenderer *ren = vtkRenderer::New();
  ren->AddActor(actor1);
  ren->SetBackground(0, 0, 0);

  //renWin和iren分别是vtkWin32OpenGLRenderWindow, vtkWin32RenderWindowInteractor
  vtkWin32RenderWindowInteractor        *iren = vtkWin32RenderWindowInteractor::New();
  vtkWin32OpenGLRenderWindow             *win = vtkWin32OpenGLRenderWindow::New();
  vtkInteractorStyleTrackballCamera    *style = vtkInteractorStyleTrackballCamera::New();
  win->Clean();
  win->SetSize(480, 360);
  win->BordersOn();
  win->AddRenderer(ren);
  iren->SetRenderWindow(win);
  iren->SetInteractorStyle(style);

  //搭上一个显示用的MFC窗口框架。
         CWnd *viewer_Wnd;
        viewer_Wnd = this->GetDlgItem(IDCX);   
         HWND hWnd = (HWND)viewer_Wnd->m_hWnd;
         HWND hParent = ::GetParent(hWnd);
        //::ShowWindow(hParent, SW_HIDE);
        ::ShowWindow(hParent, 1);
        win->SetParentId(this->m_hWnd);

        iren->Start();

        map1->Delete();
        grid->Delete();
       actor1->Delete();
        polyvertex->Delete();

        ren->Delete();
        win->Delete();
        iren->Delete();

        return 1;
}

显示效果：

VTK：VTK嵌入MFC成功_i++

注意事项：

使用

iren->Start();

导致renter不能更行，修改为以下代码可以完成动态更新：

把 render和win放在初始对话框初始化，其他代码修改为：

this->win->Render();

//在 对话框初始化时初始化Render
inline int Ciisu2vrMfcsDlg::showPointsInVtkG(short* &depthImage, int HeightDepth, int WidthDepth, int IDCX)
{

  //double arr[3];
  vtkPoints * points = vtkPoints::New();
  int n = 0; int idx = 0; int Length = 3 * HeightDepth*WidthDepth;
  //首先读取点云数据到点表points同时指定点对应的id:
  for (int i = 0; i < HeightDepth; ++i){
    int LastPixel = i* WidthDepth;
    for (int j = 0; j < WidthDepth; ++j){
      int y = depthImage[3 * (j + LastPixel)];
      int x = depthImage[3 * (j + LastPixel) + 1];
      int z = depthImage[3 * (j + LastPixel) + 2];//这里压缩四倍是比较好的方法//int z = (depthImage[(j + LastPixel)]) ;
      points->InsertPoint(n, x, y, z);
      n++;
    }
  }
  vtkPolyVertex * polyvertex = vtkPolyVertex::New();
  polyvertex->GetPointIds()->SetNumberOfIds(n);
  int i = 0;
  //建立拓扑关系
  for (i = 0; i < n; i++){
    polyvertex->GetPointIds()->SetId(i, i);
  }

  vtkUnstructuredGrid * grid = vtkUnstructuredGrid::New();
  grid->SetPoints(points);
  grid->InsertNextCell(polyvertex->GetCellType(),
    polyvertex->GetPointIds() );

  vtkDataSetMapper *map = vtkDataSetMapper::New();
  map->SetInputData(grid);

  vtkActor *actorG = vtkActor::New();
  actorG->SetMapper(map);
  actorG->GetProperty()->SetColor(0.194, 0.562, 0.75);

  vtkRenderer *ren = vtkRenderer::New();
  ren->AddActor(actorG);
  ren->SetBackground(0.13, 0.40, 0.15);

  this->win->AddRenderer(ren);
  this->win->Render();//自己写一个重载-更新函数！

  map->Delete();
  grid->Delete();
  actorG->Delete();
  polyvertex->Delete();

  return 1;
}