GreedyTerrainDecimation
Repository source: 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
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Question
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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);
}
}
}