# TriangleStrip

VTKExamples/Java/GeometricObjects/TriangleStrip

### Description

Java Program to display a triangle Strip.

The triangle strip is a composite two-dimensional cell consisting of one or more triangles. The points defining the triangle strip need not lie in a plane. The triangle strip is defined by an ordered list of n+2 points, where n is the number of triangles. The ordering of the points is such that each set of three points defines a triangle.

Other Languages

See (Cxx), (Python), (CSharp)

### Code

TriangleStrip.java

    import vtk.vtkActor;
    import vtk.vtkNativeLibrary;
    import vtk.vtkPoints;
    import vtk.vtkCellArray;
    import vtk.vtkPolyData;
    import vtk.vtkTriangleStrip;
    import vtk.vtkPolyDataMapper;
    import vtk.vtkRenderWindow;
    import vtk.vtkRenderWindowInteractor;
    import vtk.vtkRenderer;
    import vtk.vtkNamedColors;

    public class TriangleStrip
    {

      //-----------------------------------------------------------------
      // 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];
        //Renderer Background Color
        double BgColor[] = new double[4];

        //Change Color Name to Use your own Color for Change Actor Color
        Color.GetColor("Lime",ActorColor);
        //Change Color Name to Use your own Color for Renderer Background
        Color.GetColor("Aqua",BgColor);

        vtkPoints Points = new vtkPoints();
        Points.InsertNextPoint(0.0,0.0,0.0);
        Points.InsertNextPoint(0.0,1.0,0.0);
        Points.InsertNextPoint(1.0,0.0,0.0);
        Points.InsertNextPoint(1.5,1.0,0.0);

        vtkTriangleStrip TriangleStrip = new vtkTriangleStrip();
        TriangleStrip.GetPointIds().SetNumberOfIds(4);
        TriangleStrip.GetPointIds().SetId(0, 0);
        TriangleStrip.GetPointIds().SetId(1, 1);
        TriangleStrip.GetPointIds().SetId(2, 2);
        TriangleStrip.GetPointIds().SetId(3, 3);

        vtkCellArray CellArray = new vtkCellArray();
        CellArray.InsertNextCell(TriangleStrip);

        vtkPolyData TrianglePolyData = new vtkPolyData();
        TrianglePolyData.SetPoints(Points);
        TrianglePolyData.SetPolys(CellArray);

        //Create a Mapper and Actor
        vtkPolyDataMapper Mapper = new vtkPolyDataMapper();
        Mapper.SetInputData(TrianglePolyData);

        vtkActor Actor = new vtkActor();
        Actor.SetMapper(Mapper);
        Actor.GetProperty().EdgeVisibilityOn();
        Actor.GetProperty().SetColor(ActorColor);
        Actor.GetProperty().SetLineWidth(2.5);

        // 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.SetBackground(BgColor);

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

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