GreedyTerrainDecimation
VTKExamples/CSharp/PolyData/GreedyTerrainDecimation
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
Code¶
GreedyTerrainDecimation.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 { GreedyTerrainDecimation(); } catch(Exception ex) { MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK); } } private void GreedyTerrainDecimation() { // Create an image vtkImageData image = vtkImageData.New(); image.SetDimensions(3, 3, 1); image.SetNumberOfScalarComponents(1); image.SetScalarTypeToUnsignedChar(); int[] dims = image.GetDimensions(); unsafe { for(int i = 0; i < dims[0]; i++) { for(int j = 0; j < dims[1]; j++) { byte* ptr = (byte*)image.GetScalarPointer(i, j, 0); *ptr = (byte)vtkMath.Round(vtkMath.Random(0, 1)); } } } vtkGreedyTerrainDecimation decimation = vtkGreedyTerrainDecimation.New(); decimation.SetInputConnection(image.GetProducerPort()); decimation.Update(); vtkPolyDataMapper mapper = vtkPolyDataMapper.New(); mapper.SetInputConnection(decimation.GetOutputPort()); // actor vtkActor actor = vtkActor.New(); actor.SetMapper(mapper); actor.GetProperty().SetInterpolationToFlat(); actor.GetProperty().EdgeVisibilityOn(); actor.GetProperty().SetEdgeColor(1, 0, 0); // 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); } } }