ReadPLOT3D

Repository source: ReadPLOT3D

Description¶

vtkMultiBlockPLOT3DReader is a reader object that reads PLOT3D formatted files and generates structured grid(s) on output.

PLOT3D is a computer graphics program designed to visualize the grids and solutions of computational fluid dynamics.

PLOT3D files consist of a grid file (also known as XYZ file), an optional solution file (also known as a Q file), and an optional function file that contains user created data (currently unsupported).

The Q file contains solution information as follows: the four parameters free stream mach number (Fsmach), angle of attack (Alpha), Reynolds number (Re), and total integration time (Time). This information is stored in an array called Properties in the FieldData of each output (tuple 0: fsmach, tuple 1: alpha, tuple 2: re, tuple 3: time). In addition, the solution file contains the flow density (scalar), flow momentum (vector), and flow energy (scalar).

Other languages

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

Question

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Code¶

ReadPLOT3D.java

import vtk.vtkNativeLibrary;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkActor;
import vtk.vtkNamedColors;
import vtk.vtkPolyDataMapper;
import vtk.vtkMultiBlockPLOT3DReader;
import vtk.vtkStructuredGridGeometryFilter;


public class ReadPLOT3D
{
  // -----------------------------------------------------------------
  // 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 != 2) 
    {
      System.err.println("Usage: java -classpath ... XYZFilename(.bin) QFileName(.bin) e.g combxyz.bin combq.bin");
      return;
    }
    String xyzFilename = args[0];
    String qFilename = args[1];

    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("Seagreen",BgColor);

    vtkMultiBlockPLOT3DReader reader = new vtkMultiBlockPLOT3DReader();
    reader.SetXYZFileName(xyzFilename);
    reader.SetQFileName(qFilename);
    reader.SetScalarFunctionNumber(100);
    reader.SetVectorFunctionNumber(202);
    reader.Update();

    vtkStructuredGridGeometryFilter geometryFilter = new vtkStructuredGridGeometryFilter();
    geometryFilter.SetInputData(reader.GetOutput().GetBlock(0));
    geometryFilter.Update();

    // Visualize
    vtkPolyDataMapper mapper = new vtkPolyDataMapper();
    mapper.SetInputConnection(geometryFilter.GetOutputPort());
    mapper.ScalarVisibilityOff();

    vtkActor actor = new vtkActor();
    actor.SetMapper(mapper);

    // 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();

  }
}