private static void ClosedSurface()
{
// Create a sphere
vtkSphereSource sphereSource = vtkSphereSource.New();
sphereSource.Update();
vtkFeatureEdges featureEdges = vtkFeatureEdges.New();
featureEdges.FeatureEdgesOff();
featureEdges.BoundaryEdgesOn();
featureEdges.NonManifoldEdgesOn();
featureEdges.SetInputConnection(sphereSource.GetOutputPort());
featureEdges.Update();
int numberOfOpenEdges = featureEdges.GetOutput().GetNumberOfCells();
if (numberOfOpenEdges > 0)
{
Console.WriteLine("Surface is not closed");
}
else
{
Console.WriteLine("Surface is closed");
}
// nothing to show graphically
Console.WriteLine("\nPress any key to continue...");
Console.ReadKey();
}
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 BoundaryEdges()
{
vtkDiskSource diskSource = vtkDiskSource.New();
diskSource.Update();
vtkFeatureEdges featureEdges = vtkFeatureEdges.New();
#if VTK_MAJOR_VERSION_5
featureEdges.SetInputConnection(diskSource.GetOutputPort());
#else
featureEdges.SetInputData(diskSource);
#endif
featureEdges.BoundaryEdgesOn();
featureEdges.FeatureEdgesOff();
featureEdges.ManifoldEdgesOff();
featureEdges.NonManifoldEdgesOff();
featureEdges.Update();
// Visualize
vtkPolyDataMapper edgeMapper = vtkPolyDataMapper.New();
#if VTK_MAJOR_VERSION_5
edgeMapper.SetInputConnection(featureEdges.GetOutputPort());
#else
edgeMapper.SetInputData(featureEdges);
#endif
vtkActor edgeActor = vtkActor.New();
edgeActor.GetProperty().SetLineWidth(3);
edgeActor.SetMapper(edgeMapper);
vtkPolyDataMapper diskMapper = vtkPolyDataMapper.New();
#if VTK_MAJOR_VERSION_5
diskMapper.SetInputConnection(diskSource.GetOutputPort());
#else
diskMapper.SetInputData(diskSource);
#endif
vtkActor diskActor = vtkActor.New();
diskActor.SetMapper(diskMapper);
// get a reference to the renderwindow of our renderWindowControl1
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(0.3, 0.6, 0.3);
// add our actor to the renderer
renderer.AddActor(diskActor);
renderer.AddActor(edgeActor);
}
private void CapClip(string filePath)
{
// PolyData to process
vtkPolyData polyData;
if (filePath != null)
{
vtkXMLPolyDataReader reader = vtkXMLPolyDataReader.New();
reader.SetFileName(filePath);
reader.Update();
polyData = reader.GetOutput();
}
else
{
// Create a sphere
vtkSphereSource sphereSource = vtkSphereSource.New();
sphereSource.SetThetaResolution(20);
sphereSource.SetPhiResolution(11);
vtkPlane plane = vtkPlane.New();
plane.SetOrigin(0, 0, 0);
plane.SetNormal(1.0, -1.0, -1.0);
vtkClipPolyData clipper = vtkClipPolyData.New();
clipper.SetInputConnection(sphereSource.GetOutputPort());
clipper.SetClipFunction(plane);
clipper.SetValue(0);
clipper.Update();
polyData = clipper.GetOutput();
}
vtkDataSetMapper clipMapper = vtkDataSetMapper.New();
#if VTK_MAJOR_VERSION_5
clipMapper.SetInput(polyData);
#else
clipMapper.SetInputData(polyData);
#endif
vtkActor clipActor = vtkActor.New();
clipActor.SetMapper(clipMapper);
clipActor.GetProperty().SetColor(1.0000, 0.3882, 0.2784);
clipActor.GetProperty().SetInterpolationToFlat();
// Now extract feature edges
vtkFeatureEdges boundaryEdges = vtkFeatureEdges.New();
#if VTK_MAJOR_VERSION_5
boundaryEdges.SetInput(polyData);
#else
boundaryEdges.SetInputData(polyData);
#endif
boundaryEdges.BoundaryEdgesOn();
boundaryEdges.FeatureEdgesOff();
boundaryEdges.NonManifoldEdgesOff();
boundaryEdges.ManifoldEdgesOff();
vtkStripper boundaryStrips = vtkStripper.New();
boundaryStrips.SetInputConnection(boundaryEdges.GetOutputPort());
boundaryStrips.Update();
// Change the polylines into polygons
vtkPolyData boundaryPoly = vtkPolyData.New();
boundaryPoly.SetPoints(boundaryStrips.GetOutput().GetPoints());
boundaryPoly.SetPolys(boundaryStrips.GetOutput().GetLines());
vtkPolyDataMapper boundaryMapper = vtkPolyDataMapper.New();
#if VTK_MAJOR_VERSION_5
boundaryMapper.SetInput(boundaryPoly);
#else
boundaryMapper.SetInputData(boundaryPoly);
#endif
vtkActor boundaryActor = vtkActor.New();
boundaryActor.SetMapper(boundaryMapper);
boundaryActor.GetProperty().SetColor(0.8900, 0.8100, 0.3400);
// get a reference to the renderwindow of our renderWindowControl1
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(.2, .3, .4);
// add our actor to the renderer
renderer.AddActor(clipActor);
renderer.AddActor(boundaryActor);
// Generate an interesting view
//
renderer.ResetCamera();
renderer.GetActiveCamera().Azimuth(30);
renderer.GetActiveCamera().Elevation(30);
renderer.GetActiveCamera().Dolly(1.2);
renderer.ResetCameraClippingRange();
}
