Cursor2D

VTKExamples/Java/Visualization/Cursor2D


Description

Example program to generate a 2D cursor representation. vtkCursor2D is a class that generates a 2D cursor representation. The cursor consists of two intersection axes lines that meet at the cursor focus.

Several optional features are available as well. An optional 2D bounding box may be enabled.

Other Languages

See (Cxx)

Question

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Code

Cursor2D.java

import vtk.vtkActor;
import vtk.vtkSphereSource;
import vtk.vtkNativeLibrary;
import vtk.vtkPolyDataMapper;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkNamedColors;
import vtk.vtkCursor2D;

public class Cursor2D
{
  // -----------------------------------------------------------------
  // 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];
    //For Cursor Actor Color
    double CursorActorColor[] = new double[4];
    //Renderer Background Color
    double Bgcolor[] = new double[4];

    colors.GetColor("Crimson", actorColor);
    colors.GetColor("White", CursorActorColor);
    colors.GetColor("CadetBlue", Bgcolor);

    //Create a Sphere
    vtkSphereSource Sphere = new vtkSphereSource();
    Sphere.SetCenter(0.0,0.0,0.0);
    Sphere.SetRadius(5.0);
    Sphere.Update();

    //Create a Mapper and Actor
    vtkPolyDataMapper Mapper = new vtkPolyDataMapper();
    Mapper.SetInputConnection(Sphere.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 Actor
    ren.AddActor(Actor);
    ren.SetBackground(Bgcolor);

    //Setup 2D cursor representation
    vtkCursor2D Cursor = new vtkCursor2D();
    Cursor.SetModelBounds(-10, 10, -10, 10, 0, 0);
    Cursor.AllOn();
    Cursor.SetFocalPoint(5.0, 5.0, 5.0);
    Cursor.OutlineOn();
    Cursor.Update();

    //Mapper for Cursor
    vtkPolyDataMapper CursorMapper = new vtkPolyDataMapper();
    CursorMapper.SetInputConnection(Cursor.GetOutputPort());

    //Cursor Actor
    vtkActor CursorActor = new vtkActor();
    CursorActor.SetMapper(CursorMapper);
    CursorActor.GetProperty().SetColor(CursorActorColor);
    ren.AddActor(CursorActor);

    ren.ResetCamera();
    iren.Start();

  }       
}