方法一：

vtkSmartPointer<vtkWindowToImageFilter> windowToImageFilter = vtkSmartPointer<vtkWindowToImageFilter>::New();windowToImageFilter->SetInput(renWin);//windowToImageFilter->SetInputBufferTypeToRGBA(); //also record the alpha (transparency) channelwindowToImageFilter->SetInputBufferTypeToRGB();windowToImageFilter->ReadFrontBufferOff(); // read from the back bufferwindowToImageFilter->Update();vtkNew<vtkJPEGWriter> writer;writer->SetFileName("test.jpg");writer->SetInputConnection(windowToImageFilter->GetOutputPort());writer->SetQuality(100);writer->Write();

方法二：

vtkNew<vtkRenderLargeImage> renderLarge;renderLarge->SetInput(render);renderLarge->SetMagnification(1);renderLarge->Update();vtkNew<vtkJPEGWriter> writer;writer->SetFileName("test.jpg");writer->SetInputConnection(renderLarge->GetOutputPort());writer->SetQuality(100);writer->Write();

總結

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