private void ReadPNG() { // Path to vtk data must be set as an environment variable // VTK_DATA_ROOT = "C:\VTK\vtkdata-5.8.0" vtkTesting test = vtkTesting.New(); string root = test.GetDataRoot(); string filePath = System.IO.Path.Combine(root, @"Data\camscene.png"); //Read the image vtkPNGReader reader = vtkPNGReader.New(); if (reader.CanReadFile(filePath) == 0) { MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK); return; } reader.SetFileName(filePath); reader.Update(); // Visualize vtkImageViewer2 imageViewer = vtkImageViewer2.New(); imageViewer.SetInputConnection(reader.GetOutputPort()); // get a reference to the renderwindow of our renderWindowControl1 vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow; // renderer vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer(); // set background color renderer.SetBackground(0.2, 0.3, 0.4); imageViewer.SetRenderer(renderer); }
private void WritePNG() { // Path to vtk data must be set as an environment variable // VTK_DATA_ROOT = "C:\VTK\vtkdata-5.8.0" vtkTesting test = vtkTesting.New(); string root = test.GetDataRoot(); string filePath = System.IO.Path.Combine(root, @"Data\test_png.png"); int[] extent = new int[] { 0, 99, 0, 99, 0, 0 }; vtkImageCanvasSource2D imageSource = vtkImageCanvasSource2D.New(); imageSource.SetExtent(extent[0], extent[1], extent[2], extent[3], extent[4], extent[5]); imageSource.SetScalarTypeToUnsignedChar(); imageSource.SetNumberOfScalarComponents(3); imageSource.SetDrawColor(127, 45, 255); imageSource.FillBox(0, 99, 0, 99); imageSource.SetDrawColor(255, 255, 255); imageSource.FillBox(40, 70, 20, 50); imageSource.Update(); vtkImageCast castFilter = vtkImageCast.New(); castFilter.SetOutputScalarTypeToUnsignedChar(); castFilter.SetInputConnection(imageSource.GetOutputPort()); castFilter.Update(); vtkPNGWriter writer = vtkPNGWriter.New(); writer.SetFileName(filePath); writer.SetInputConnection(castFilter.GetOutputPort()); writer.Write(); // Read and display file for verification that it was written correctly vtkPNGReader reader = vtkPNGReader.New(); if (reader.CanReadFile(filePath) == 0) { MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK); return; } reader.SetFileName(filePath); reader.Update(); // Visualize vtkImageViewer2 imageViewer = vtkImageViewer2.New(); imageViewer.SetInputConnection(reader.GetOutputPort()); // get a reference to the renderwindow of our renderWindowControl1 vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow; // renderer vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer(); // set background color renderer.SetBackground(0.2, 0.3, 0.4); imageViewer.SetRenderer(renderer); renderer.ResetCamera(); }