/// <summary>
/// Clip this part - Set Mapper input to Clipper
/// </summary>
public void ClipPart(vtkPlane ClipPlane, bool clip)
{
if (clip == true)
{
Clipper = vtkTableBasedClipDataSet.New();
Clipper.SetClipFunction(ClipPlane);
Clipper.SetInputConnection(Grid.GetProducerPort());
Clipper.Update();
Mapper.SetInputConnection(Clipper.GetOutputPort());
Mapper.Update();
// Update Feature Filter -> will update Edges and Faces
Filter.SetInput(Clipper.GetOutput());
Filter.Update();
// ------- Alternative without Clip Surface Extraction --------------
//vtkPlaneCollection planes = vtkPlaneCollection.New();
//planes.AddItem(ClipPlane);
//Edges.GetMapper().SetClippingPlanes(planes);
//Edges.GetMapper().Update();
//vtkPlaneCollection Planes = vtkPlaneCollection.New();
//Planes.AddItem(ClipPlane);
//Mapper.SetClippingPlanes(Planes);
//Mapper.Update();
}
else
{
Mapper.SetInput(Grid);
Mapper.Update();
// Update Feature Filter -> will update Edges and Faces
Filter.SetInput(Grid);
Filter.Update();
// ------- Alternative without Clip Surface Extraction --------------
// Edges
//vtkPlaneCollection planes = vtkPlaneCollection.New();
//Edges.GetMapper().SetClippingPlanes(planes);
//Edges.GetMapper().Update();
//vtkPlaneCollection Planes = vtkPlaneCollection.New();
//Mapper.SetClippingPlanes(Planes);
//Mapper.Update();
}
}
public void ExtractFeatures()
{
Filter = vtkDataSetSurfaceFilter.New();
Filter.SetInput(Grid);
Filter.Update();
Faces = Filter.GetOutput();
vtkFeatureEdges FeatureEdges = vtkFeatureEdges.New();
FeatureEdges.SetInput(Filter.GetOutput());
FeatureEdges.Update();
FeatureEdges.BoundaryEdgesOn();
FeatureEdges.FeatureEdgesOn();
FeatureEdges.ManifoldEdgesOn();
FeatureEdges.NonManifoldEdgesOn();
// Change Edge color
FeatureEdges.SetColoring(0);
// Update
FeatureEdges.Update();
vtkPolyDataMapper EdgeMapper = vtkPolyDataMapper.New();
EdgeMapper.SetInput(FeatureEdges.GetOutput());
EdgeMapper.ScalarVisibilityOff();
Edges.SetMapper(EdgeMapper);
Edges.GetProperty().SetEdgeColor(0, 0, 0);
Edges.GetProperty().SetColor(0.0, 0.0, 0.0);
Edges.GetProperty().SetLineWidth((float)1.0); // Set default edge thickness
Edges.SetVisibility(0);
}
private void MatrixMathFilter()
{
// 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\tensors.vtk");
vtkUnstructuredGridReader reader = vtkUnstructuredGridReader.New();
reader.SetFileName(filePath);
reader.Update();
vtkDataSetSurfaceFilter surfaceFilter = vtkDataSetSurfaceFilter.New();
surfaceFilter.SetInputConnection(reader.GetOutputPort());
surfaceFilter.Update();
vtkMatrixMathFilter matrixMathFilter = vtkMatrixMathFilter.New();
//matrixMathFilter.SetOperationToDeterminant();
matrixMathFilter.SetOperationToEigenvalue();
matrixMathFilter.SetInputConnection(surfaceFilter.GetOutputPort());
matrixMathFilter.Update();
matrixMathFilter.GetOutput().GetPointData().SetActiveScalars("Eigenvalue");
vtkXMLPolyDataWriter writer = vtkXMLPolyDataWriter.New();
writer.SetInputConnection(matrixMathFilter.GetOutputPort());
writer.SetFileName(System.IO.Path.Combine(root, @"Data\output.vtp"));
writer.Write();
vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
mapper.SetInputConnection(matrixMathFilter.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);
}
void GenerateData(ref vtkPolyData input)
{
// Create a sphere
vtkSphereSource sphereSource = vtkSphereSource.New();
sphereSource.Update();
// Remove some cells
vtkIdTypeArray ids = vtkIdTypeArray.New();
ids.SetNumberOfComponents(1);
// Set values
ids.InsertNextValue(2);
ids.InsertNextValue(10);
vtkSelectionNode selectionNode = vtkSelectionNode.New();
selectionNode.SetFieldType((int)vtkSelectionNode.SelectionField.CELL);
selectionNode.SetContentType((int)vtkSelectionNode.SelectionContent.INDICES);
selectionNode.SetSelectionList(ids);
selectionNode.GetProperties().Set(vtkSelectionNode.INVERSE(), 1); //invert the selection
vtkSelection selection = vtkSelection.New();
selection.AddNode(selectionNode);
vtkExtractSelection extractSelection = vtkExtractSelection.New();
extractSelection.SetInputConnection(0, sphereSource.GetOutputPort());
#if VTK_MAJOR_VERSION_5
extractSelection.SetInput(1, selection);
#else
extractSelection.SetInputData(1, selection);
#endif
extractSelection.Update();
// In selection
vtkDataSetSurfaceFilter surfaceFilter = vtkDataSetSurfaceFilter.New();
surfaceFilter.SetInputConnection(extractSelection.GetOutputPort());
surfaceFilter.Update();
input.ShallowCopy(surfaceFilter.GetOutput());
}
