private void ReadDEM()
{
// 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\SainteHelens.dem");
vtkDEMReader reader = vtkDEMReader.New();
reader.SetFileName(filePath);
reader.Update();
vtkLookupTable lut = vtkLookupTable.New();
lut.SetHueRange(0.6, 0);
lut.SetSaturationRange(1.0, 0);
lut.SetValueRange(0.5, 1.0);
double[] range = reader.GetOutput().GetScalarRange();
lut.SetTableRange(range[0], range[1]);
// Visualize
vtkImageMapToColors mapColors = vtkImageMapToColors.New();
mapColors.SetLookupTable(lut);
mapColors.SetInputConnection(reader.GetOutputPort());
// Create an actor
vtkImageActor actor = vtkImageActor.New();
actor.SetInput(mapColors.GetOutput());
// 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);
}
private void RenderDEM()
{
vtkDEMReader reader = vtkDEMReader.New();
reader.SetFileName(m_FileName);
reader.Update();
vtkLookupTable lut = vtkLookupTable.New();
lut.SetHueRange(0.6, 0);
lut.SetSaturationRange(1.0, 0);
lut.SetValueRange(0.5, 1.0);
double[] range = reader.GetOutput().GetScalarRange();
lut.SetTableRange(range[0], range[1]);
// Visualize
vtkImageMapToColors mapColors = vtkImageMapToColors.New();
mapColors.SetLookupTable(lut);
mapColors.SetInputConnection(reader.GetOutputPort());
// Create an actor
vtkImageActor actor = vtkImageActor.New();
actor.SetInput(mapColors.GetOutput());
// add our actor to the renderer
m_Renderer.AddActor(actor);
imgPropList.Add(actor);
m_Renderer.ResetCamera();
//Rerender the screen
m_RenderWindow.Render();
m_Renderer.Render();
}
