private void ImageReader2Factory()
{
// 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\foot\foot.mha");
vtkImageReader2 reader = vtkImageReader2Factory.CreateImageReader2(filePath);
if (reader.CanReadFile(filePath) == 0)
{
MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK);
return;
}
reader.SetFileName(filePath);
reader.Update();
vtkImageActor actor = vtkImageActor.New();
actor.SetInputData(reader.GetOutput());
// Visualize
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(0.2, 0.3, 0.4);
renderer.AddActor(actor);
}
/// <summary>
/// Display the render window with the slice in it
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void renderWindowControl1_Load(object sender, EventArgs e)
{
//Get the name of the Unsigned Char volume that you want to load
fileName = "../../../head.vti";
//Create all the objects for the pipeline
vtkXMLImageDataReader reader = vtkXMLImageDataReader.New();
vtkImageActor iactor = vtkImageActor.New();
vtkImageClip clip = vtkImageClip.New();
vtkContourFilter contour = vtkContourFilter.New();
vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
vtkActor actor = vtkActor.New();
vtkInteractorStyleImage style = vtkInteractorStyleImage.New();
vtkRenderer renderer = renderWindowControl1.RenderWindow.GetRenderers().GetFirstRenderer();
//Read the Image
reader.SetFileName(fileName);
//Go through the visulization pipeline
iactor.SetInputData(reader.GetOutput());
renderer.AddActor(iactor);
reader.Update();
int[] extent = reader.GetOutput().GetExtent();
iactor.SetDisplayExtent(extent[0], extent[1], extent[2], extent[3],
(extent[4] + extent[5]) / 2,
(extent[4] + extent[5]) / 2);
clip.SetInputConnection(reader.GetOutputPort());
clip.SetOutputWholeExtent(extent[0], extent[1], extent[2], extent[3],
(extent[4] + extent[5]) / 2,
(extent[4] + extent[5]) / 2);
contour.SetInputConnection(clip.GetOutputPort());
contour.SetValue(0, 100);
mapper.SetInputConnection(contour.GetOutputPort());
mapper.SetScalarVisibility(1);
//Go through the graphics pipeline
actor.SetMapper(mapper);
actor.GetProperty().SetColor(0, 1, 0);
renderer.AddActor(actor);
//Give a new style to the interactor
vtkRenderWindowInteractor iren = renderWindowControl1.RenderWindow.GetInteractor();
iren.SetInteractorStyle(style);
//Add new events to the interactor style
style.LeftButtonPressEvt += new vtkObject.vtkObjectEventHandler(iren_LeftButtonPressEvt);
style.LeftButtonReleaseEvt += new vtkObject.vtkObjectEventHandler(iren_LeftButtonReleaseEvt);
style.MouseMoveEvt += new vtkObject.vtkObjectEventHandler(iren_MouseMoveEvt);
//Update global variables
this.trackBar1.Maximum = extent[5];
this.trackBar1.Minimum = extent[4];
this.Interactor = iren;
this.RenderWindow = renderWindowControl1.RenderWindow;
this.Renderer = renderer;
this.Clip = clip;
this.ImageActor = iactor;
}
