static public vtkAlgorithmOutput genFrustumCone(double total_dis, double end_radius,
double distance, bool is_reverse)
{
vtkConeSource cone = vtkConeSource.New();
cone.SetHeight(total_dis * 1.2);
cone.SetRadius(end_radius * 1.2);
cone.SetCenter(0, 0, total_dis * 0.4);
cone.SetResolution(80);
cone.SetDirection(0, 0, 1);
cone.Update();
vtkPlane plane = vtkPlane.New();
plane.SetOrigin(0, 0, 0);
plane.SetNormal(0, 0, 1);
vtkClipPolyData clipPolyData = vtkClipPolyData.New();
clipPolyData.SetInputConnection(cone.GetOutputPort());
clipPolyData.SetClipFunction(plane);
clipPolyData.GenerateClippedOutputOn();
clipPolyData.Update();
vtkPlane plane2 = vtkPlane.New();
plane2.SetOrigin(0, 0, distance);
plane2.SetNormal(0, 0, -1);
vtkClipPolyData clipPolyData2 = vtkClipPolyData.New();
clipPolyData2.SetInputConnection(clipPolyData.GetOutputPort());
clipPolyData2.SetClipFunction(plane2);
clipPolyData2.GenerateClippedOutputOn();
clipPolyData2.Update();
if (is_reverse)
{
vtkTransform transform = vtkTransform.New();
transform.RotateWXYZ(180, 0, 1, 0);
transform.Translate(0, 0, -distance);
vtkTransformPolyDataFilter transFilter = vtkTransformPolyDataFilter.New();
transFilter.SetInputConnection(clipPolyData2.GetOutputPort());
transFilter.SetTransform(transform); //use vtkTransform (or maybe vtkLinearTransform)
transFilter.Update();
return(transFilter.GetOutputPort());
}
return(clipPolyData2.GetOutputPort());
}
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();
}