ParticleReader

Description¶

vtkParticleReader object reads either a binary or a text file of particles.

Each particle can have associated with it an optional scalar value. So the format is: x, y, z, scalar (all floats or doubles). The text file can consist of a comma delimited set of values.

In most cases vtkParticleReader can automatically determine whether the file is text or binary.

Other languages

See (Cxx), (CSharp)

Question

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

Code¶

ParticleReader.java

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

public class ParticleReader
{
  // -----------------------------------------------------------------
  // 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 args[]) 
  {

    //parse command line arguments
    if (args.length != 1) 
    {
      System.err.println("Usage: java -classpath ... Filename(.raw) e.g Particles.raw");
      return;
    }
    String Filename = args[0];

    vtkNamedColors Color = new vtkNamedColors(); 

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

    //Change Color Name to Use your own Color for Renderer Background
    Color.GetColor("Navy",BgColor);

    // Read the file
    vtkParticleReader reader = new vtkParticleReader();
    reader.SetFileName(Filename);
    reader.SetDataByteOrderToBigEndian();
    reader.Update();

    // Create a mapper and actor
    vtkPolyDataMapper mapper = new vtkPolyDataMapper();
    mapper.SetInputConnection(reader.GetOutputPort());
    System.out.println("number of pieces:" + " " + mapper.GetNumberOfPieces());
    mapper.SetScalarRange(4, 9);

    vtkActor actor = new vtkActor();
    actor.SetMapper(mapper);
    actor.GetProperty().SetPointSize(4);

    // 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);

    ren.AddActor(actor);
    ren.SetBackground(BgColor);

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

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

  }
}