MatrixMathFilter
VTKExamples/CSharp/Meshes/MatrixMathFilter
Description¶
A tutorial on how to setup a Windows Forms Application utilizing ActiViz.NET can be found here: Setup a Windows Forms Application to use ActiViz.NET
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Code¶
MatrixMathFilter.cs
using System; using System.Collections.Generic; using System.ComponentModel; using System.Windows.Forms; using System.Diagnostics; using Kitware.VTK; namespace ActiViz.Examples { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void renderWindowControl1_Load(object sender, EventArgs e) { try { MatrixMathFilter(); } catch(Exception ex) { MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK); } } private void MatrixMathFilter() { // 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\tensors.vtk"); vtkUnstructuredGridReader reader = vtkUnstructuredGridReader.New(); reader.SetFileName(filePath); reader.Update(); vtkDataSetSurfaceFilter surfaceFilter = vtkDataSetSurfaceFilter.New(); surfaceFilter.SetInputConnection(reader.GetOutputPort()); surfaceFilter.Update(); vtkMatrixMathFilter matrixMathFilter = vtkMatrixMathFilter.New(); //matrixMathFilter.SetOperationToDeterminant(); matrixMathFilter.SetOperationToEigenvalue(); matrixMathFilter.SetInputConnection(surfaceFilter.GetOutputPort()); matrixMathFilter.Update(); matrixMathFilter.GetOutput().GetPointData().SetActiveScalars("Eigenvalue"); vtkXMLPolyDataWriter writer = vtkXMLPolyDataWriter.New(); writer.SetInputConnection(matrixMathFilter.GetOutputPort()); writer.SetFileName(System.IO.Path.Combine(root, @"Data\output.vtp")); writer.Write(); vtkPolyDataMapper mapper = vtkPolyDataMapper.New(); mapper.SetInputConnection(matrixMathFilter.GetOutputPort()); // actor vtkActor actor = vtkActor.New(); actor.SetMapper(mapper); // 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); // add our actor to the renderer renderer.AddActor(actor); } } }