VTK/Examples/Cxx/Rendering/Cylinder－天天向上

   1: renWin->SetSize(300, 200);

C:\VTK 5.6\VTK\Widgets;C:\VTK 5.6\VTK\Rendering;C:\VTK 5.6\VTK\IO;C:\VTK 5.6\VTK\Imaging;C:\VTK 5.6\VTK\Graphics;C:\VTK 5.6\VTK\Geovis;C:\VTK 5.6\VTK\GenericFiltering;C:\VTK 5.6\VTK\Filtering;C:\VTK 5.6\VTK\Common;C:\VTK 5.6\release\x86;

C:\VTK 5.6\lib

vtkWidgets.lib
vtkHybrid.lib
vtkRendering.lib
vtkGraphics.lib
vtkImaging.lib
vtkIO.lib
vtkFiltering.lib
vtkCommon.lib
vtksys.lib

   1: // This creates a polygonal cylinder model with eight circumferential facets.   2:     3: kCylinderSource *cylinder = vtkCylinderSource::New();   4: linder->SetResolution(3);

cylinder->SetResolution(4);

cylinder->SetResolution(5);

將上面的多邊形的幾何圖形映射至圖像上

即將 cylinder的輸出接到 cylinderMapper的輸入

   1: // The mapper is responsible for pushing the geometry into the graphics   2: // library. It may also do color mapping, if scalars or other attributes   3: // are defined.   4: //   5: vtkPolyDataMapper *cylinderMapper = vtkPolyDataMapper::New();   6: cylinderMapper->SetInputConnection(cylinder->GetOutputPort());

創建一個cylinderActor, 類似剛才作法

將 cylinderMapper的輸出接到 cylinderActor的輸入

同時設定cylinderActor的顏色, 擺放的角度

   1:     2:     3: // The actor is a grouping mechanism: besides the geometry (mapper), it   4: // also has a property, transformation matrix, and/or texture map.   5: // Here we set its color and rotate it -22.5 degrees.   6: vtkActor *cylinderActor = vtkActor::New();   7: cylinderActor->SetMapper(cylinderMapper);   8: cylinderActor->GetProperty()->SetColor(1.0000, 0.0000, 0.0000);   9: cylinderActor->RotateX(30.0);  10: cylinderActor->RotateY(-45.0);

創建一個rend1和renWin

將ren1加入renWin 即 renWin->AddRender(ren1)

加入視窗互動 iren, 可以接收滑鼠相關事件 iren->SetRenderWindow(renWin)

   1: // Create the graphics structure. The renderer renders into the   2:   // render window. The render window interactor captures mouse events   3:   // and will perform appropriate camera or actor manipulation   4:   // depending on the nature of the events.   5:   //   6:   vtkRenderer *ren1 = vtkRenderer::New();   7:   vtkRenderWindow *renWin = vtkRenderWindow::New();   8:   renWin->AddRenderer(ren1);   9:   vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();  10:   iren->SetRenderWindow(renWin);

ren1加入主角cylinderActor

設定ren1的背景顏色及renWin大小

   1:     2: // Add the actors to the renderer, set the background and size   3: //   4: ren1->AddActor(cylinderActor);   5: ren1->SetBackground(0.1, 0.2, 0.4);   6: renWin->SetSize(300, 200);

將攝影機靠近(放大效果), ren1->GetActiveCamera()->Zoom(1.5)

並開始顯示 renWin->Render()

   1: // We'll zoom in a little by accessing the camera and invoking a "Zoom"   2: // method on it.   3: ren1->ResetCamera();   4: ren1->GetActiveCamera()->Zoom(1.5);   5: renWin->Render();

開始iren

   1: // This starts the event loop and as a side effect causes an initial render.   2: iren->Start();

當關閉視窗, 釋放資源

   1: // Exiting from here, we have to delete all the instances that   2: // have been created.   3: cylinder->Delete();   4: cylinderMapper->Delete();   5: cylinderActor->Delete();   6: ren1->Delete();   7: renWin->Delete();   8: iren->Delete();