Arrow

vtk-examples/Java/GeometricObjects/Arrow

Description¶

vtkArrowSource object appends a cylinder to a cone to form an arrow.

The shaft base is always at (0,0,0). The arrow tip is always at (1,0,0). If "Invert" is true, then the ends are flipped i.e. tip is at (0,0,0) while base is at (1, 0, 0).

The resolution of the cone and shaft can be set and default to 6.

The radius of the cone and shaft can be set and default to 0.03 and 0.1. The length of the tip can also be set, and defaults to 0.35.

Other languages

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

Question

If you have a question about this example, please use the VTK Discourse Forum

Code¶

Arrow.java

import vtk.vtkActor;
import vtk.vtkArrowSource;
import vtk.vtkNamedColors;
import vtk.vtkNativeLibrary;
import vtk.vtkPolyDataMapper;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;

public class Arrow  
{
  // -----------------------------------------------------------------
  // 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 colors = new vtkNamedColors();


    //For Actor Color
    double actorColor[] = new double[4];
    //Renderer Background Color
    double Bgcolor[] = new double[4];


    colors.GetColor("Tomato", actorColor);
    colors.GetColor("DarkSeaGreen", Bgcolor);

    //Create a Arrow 
    vtkArrowSource ArrowSource = new vtkArrowSource();
    ArrowSource.Update();
    //Uncomment below lines to set properties
    //ArrowSource.SetShaftRadius(1.0);
    //ArrowSource.SetTipLength(1.0);

    //Create a Mapper and Actor
    vtkPolyDataMapper Mapper = new vtkPolyDataMapper();
    Mapper.SetInputConnection(ArrowSource.GetOutputPort());

    vtkActor Actor = new vtkActor();
    Actor.SetMapper(Mapper);
    Actor.GetProperty().SetColor(actorColor);

     // 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();
  }
}