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WritePNM

vtk-examples/Java/IO/WritePNM

Description

vtkPNMWriter objects writes Portable Any Map (PNM) file.

The PNM format is just an abstraction of the PBM, PGM, and PPM formats.

Other languages

See (Cxx), (CSharp)

Question

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

Code

WritePNM.java

import vtk.vtkNativeLibrary;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkImageCanvasSource2D;
import vtk.vtkPNMWriter;
import vtk.vtkPNMReader;
import vtk.vtkImageActor;
import vtk.vtkInteractorStyleImage;


public class WritePNM
{
  // -----------------------------------------------------------------
  // 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(.pnm) e.g OutputFile.pnm");
      return;
    }
    String Filename = args[0];

    vtkImageCanvasSource2D imageSource = new vtkImageCanvasSource2D();
    imageSource.SetScalarTypeToUnsignedChar();
    imageSource.SetExtent(0,9,0,9,0,0);
    imageSource.SetNumberOfScalarComponents(3);
    imageSource.SetDrawColor(0, 0, 0, 0);
    imageSource.FillBox(0,9,0,9);
    imageSource.SetDrawColor(255, 0, 0, 0);
    imageSource.FillBox(5,7,5,7);
    imageSource.Update();

    vtkPNMWriter pnmWriter = new vtkPNMWriter();
    pnmWriter.SetFileName(Filename);
    pnmWriter.SetInputConnection(imageSource.GetOutputPort());
    pnmWriter.Write();

    // Read and display for verification
    vtkPNMReader reader = new vtkPNMReader();
    reader.SetFileName(Filename);
    reader.Update();

    vtkImageActor actor = new vtkImageActor();
    actor.GetMapper().SetInputConnection(reader.GetOutputPort());

    // 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);

    vtkInteractorStyleImage style = new vtkInteractorStyleImage();
    iren.SetInteractorStyle(style);

    ren.AddActor(actor);

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

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

  }
}