# ConvexPointSet

VTKExamples/Java/GeometricObjects/ConvexPointSet

### Description

Java Program to Demonstrate Convex Point Set.

Other Languages

See (Cxx), (Python)

### Code

ConvexPointSet.java

    import vtk.vtkActor;
    import vtk.vtkNamedColors;
    import vtk.vtkConvexPointSet;
    import vtk.vtkPoints;
    import vtk.vtkUnstructuredGrid;
    import vtk.vtkDataSetMapper;
    import vtk.vtkSphereSource;
    import vtk.vtkNativeLibrary;
    import vtk.vtkPolyData;
    import vtk.vtkRenderWindow;
    import vtk.vtkRenderWindowInteractor;
    import vtk.vtkRenderer;
    import vtk.vtkGlyph3DMapper;

    public class ConvexPointSet
    {
      //private static final long serialVersionUID = 1L;

      // -----------------------------------------------------------------
      // Load VTK library and print which library was not properly loaded
      static
      {
        if (!vtkNativeLibrary.LoadAllNativeLibraries())
        {
          for (vtkNativeLibrary lib : vtkNativeLibrary.values())
          {
            if (!lib.IsLoaded())
            {
              System.out.println(lib.GetLibraryName() + " not loaded");
            }
          }
        }
        vtkNativeLibrary.DisableOutputWindow(null);
      }
      // -----------------------------------------------------------------

      public static void main(String s[])
      {
        vtkNamedColors Color = new vtkNamedColors();

        //For Actor Color
        double ActorColor[] = new double[4];
        //For Point Actor Color
        double PointActorColor[] = new double[4];
        //Renderer Background Color
        double BgColor[] = new double[4];

        //Change Color Name to Use your own Color for Change Actor Color
        Color.GetColor("Cyan",ActorColor);
        //Change Color Name to Use your own Color for Change Point Actor Color
        Color.GetColor("OrangeRed",PointActorColor);
        //Change Color Name to Use your own Color for Renderer Background
        Color.GetColor("DarkOrange",BgColor);

        vtkConvexPointSet CPS = new vtkConvexPointSet();
        vtkPoints Points = new vtkPoints();
        Points.InsertNextPoint(0, 0, 0);
        Points.InsertNextPoint(1, 0, 0);
        Points.InsertNextPoint(1, 1, 0);
        Points.InsertNextPoint(0, 1, 0);
        Points.InsertNextPoint(0, 0, 1);
        Points.InsertNextPoint(1, 0, 1);
        Points.InsertNextPoint(1, 1, 1);
        Points.InsertNextPoint(0, 1, 1);
        Points.InsertNextPoint(0.5, 0, 0);
        Points.InsertNextPoint(1, 0.5, 0);
        Points.InsertNextPoint(0.5, 1, 0);
        Points.InsertNextPoint(0, 0.5, 0);
        Points.InsertNextPoint(0.5, 0.5, 0);

        for (int i = 0; i < 13; ++i)
        {
          CPS.GetPointIds().InsertId(i, i);
        }

        vtkUnstructuredGrid UG = new vtkUnstructuredGrid();
        UG.Allocate(1, 1);
        UG.InsertNextCell(CPS.GetCellType(), CPS.GetPointIds());
        UG.SetPoints(Points);

        vtkDataSetMapper Mapper = new vtkDataSetMapper();
        Mapper.SetInputData(UG);

        vtkActor Actor = new vtkActor();
        Actor.SetMapper(Mapper);
        Actor.GetProperty().SetColor(ActorColor);
        Actor.GetProperty().SetLineWidth(3.0);
        Actor.GetProperty().EdgeVisibilityOn();

        // Glyph the points
        vtkSphereSource Sphere = new vtkSphereSource();
        Sphere.SetRadius(0.03);
        Sphere.SetPhiResolution(21);
        Sphere.SetThetaResolution(21);

        vtkPolyData PolyData = new vtkPolyData();
        PolyData.SetPoints(Points);

        vtkGlyph3DMapper PointMapper = new vtkGlyph3DMapper();
        PointMapper.SetInputData(PolyData);
        PointMapper.SetSourceConnection(Sphere.GetOutputPort());

        vtkActor PointActor = new vtkActor();
        PointActor.SetMapper(PointMapper);
        PointActor.GetProperty().SetColor(PointActorColor);

        // Create the renderer, render window and interactor.
        vtkRenderer ren = new vtkRenderer();
        vtkRenderWindow renWin = new vtkRenderWindow();
        renWin.AddRenderer(ren);
        vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();
        iren.SetRenderWindow(renWin);

        // Visualise the arrow
        ren.AddActor(Actor);
        ren.AddActor(PointActor);
        ren.SetBackground(BgColor);
        ren.ResetCamera();
        ren.GetActiveCamera().Azimuth(210);
        ren.GetActiveCamera().Elevation(30);

        renWin.SetSize(300, 300);
        renWin.Render();

        iren.Initialize();
        iren.Start();

      }
    }