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());
}