private void renderWindowControl1_Load(object sender, EventArgs e)
{
try {
string filePath = @"C:\VTK\vtkdata-5.8.0\Data\quadraticTetra01.vtu";
// reader
vtkXMLUnstructuredGridReader reader = vtkXMLUnstructuredGridReader.New();
if (reader.CanReadFile(filePath) == 0)
{
MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK);
return;
}
reader.SetFileName(filePath);
reader.Update(); // here we read the file actually
// mapper
vtkDataSetMapper gridMapper = vtkDataSetMapper.New();
gridMapper.SetInputConnection(reader.GetOutputPort());
// actor
vtkActor gridActor = vtkActor.New();
gridActor.SetMapper(gridMapper);
// 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(gridActor);
// reposition the camera, so that actor can be fully seen
renderer.ResetCamera();
}
catch (Exception ex) {
MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
}
}
public void WriteVTUTriangle(string filePath, List <Vector3d> point_data, List <Vector3> trianglepoints, Dictionary <String, vtkDataArray> scalar_dataArray, List <String> arrayNames, int numberOfPoints, int numberOfTetraPoints)
{
vtkPoints points = vtkPoints.New();
for (int i = 0; i < numberOfPoints; i++)
{
points.InsertNextPoint(point_data[i].X, point_data[i].Y, point_data[i].Z);
}
vtkUnstructuredGrid unstructuredGrid = vtkUnstructuredGrid.New();
vtkCellArray cellArrayOne = vtkCellArray.New();
for (int i = 0; i < numberOfTetraPoints; i++)
{
vtkTriangle triangle = vtkTriangle.New();
triangle.GetPointIds().SetId(0, (long)trianglepoints[i][0]);
triangle.GetPointIds().SetId(1, (long)trianglepoints[i][1]);
triangle.GetPointIds().SetId(2, (long)trianglepoints[i][2]);
cellArrayOne.InsertNextCell(triangle);
}
unstructuredGrid.SetPoints(points);
const int VTK_TRIANGLE = 5;
unstructuredGrid.SetCells(VTK_TRIANGLE, cellArrayOne);
int numberOfScalarData = scalar_dataArray.Count();
for (int i = 0; i < numberOfScalarData; i++)
{
scalar_dataArray.TryGetValue(arrayNames[i], out vtkDataArray scalars);
unstructuredGrid.GetPointData().AddArray(scalars);
}
// add file ending if it is not existent
string suffix = (".vtu");
if (!(filePath.EndsWith(suffix)))
{
filePath += suffix;
}
// Write file
vtkXMLUnstructuredGridWriter writer = vtkXMLUnstructuredGridWriter.New();
writer.SetFileName(filePath);
writer.SetInput(unstructuredGrid);
writer.Write();
// Read and display file for verification that it was written correctly
vtkXMLUnstructuredGridReader reader = vtkXMLUnstructuredGridReader.New();
if (reader.CanReadFile(filePath) == 0)
{
//MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK);
return;
}
Console.WriteLine("VTU file was writen and is saved at {0}", filePath);
}
private void WriteVTUFile()
{
// 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\tetra_test.vtu");
vtkPoints points = vtkPoints.New();
points.InsertNextPoint(0, 0, 0);
points.InsertNextPoint(1, 0, 0);
points.InsertNextPoint(1, 1, 0);
points.InsertNextPoint(0, 1, 1);
vtkTetra tetra = vtkTetra.New();
tetra.GetPointIds().SetId(0, 0);
tetra.GetPointIds().SetId(1, 1);
tetra.GetPointIds().SetId(2, 2);
tetra.GetPointIds().SetId(3, 3);
vtkCellArray cellArray = vtkCellArray.New();
cellArray.InsertNextCell(tetra);
vtkUnstructuredGrid unstructuredGrid = vtkUnstructuredGrid.New();
unstructuredGrid.SetPoints(points);
const int VTK_TETRA = 10;
unstructuredGrid.SetCells(VTK_TETRA, cellArray);
// Write file
vtkXMLUnstructuredGridWriter writer = vtkXMLUnstructuredGridWriter.New();
writer.SetFileName(filePath);
writer.SetInput(unstructuredGrid);
writer.Write();
// Read and display file for verification that it was written correctly
vtkXMLUnstructuredGridReader reader = vtkXMLUnstructuredGridReader.New();
if (reader.CanReadFile(filePath) == 0)
{
MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK);
return;
}
reader.SetFileName(filePath);
reader.Update();
vtkDataSetMapper mapper = vtkDataSetMapper.New();
mapper.SetInputConnection(reader.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);
}