CompositePolyDataMapper

VTKExamples/Java/CompositeData/CompositePolyDataMapper


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See (Cxx), (Python)

Code

CompositePolyDataMapper.java

import vtk.vtkNativeLibrary;
import vtk.vtkActor;
import vtk.vtkSphereSource;
import vtk.vtkMultiBlockDataSet;
import vtk.vtkCompositePolyDataMapper2;
import vtk.vtkCompositeDataDisplayAttributes;
import vtk.vtkNamedColors;

import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;



public class CompositePolyDataMapper  {
  //private static final long serialVersionUID = 1L;
  // -----------------------------------------------------------------
  // 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 Color = new vtkNamedColors(); 
    //For Actor Color
    double ActorColor[] = new double[4];
    //For Renderer Background Color
    double BgColor[] = new double[4];


    //Change Color Name to Use your own Color for Change Actor Color
    Color.GetColor("Red",ActorColor);
    //Change Color Name to Use your own Color for Renderer Background
    Color.GetColor("Black",BgColor);


    vtkSphereSource Sphere1 = new vtkSphereSource();
    Sphere1.SetRadius(3);
    Sphere1.SetCenter(0, 0, 0);
    Sphere1.Update();

    vtkSphereSource Sphere2 = new vtkSphereSource();
    Sphere2.SetRadius(2);
    Sphere2.SetCenter(2, 0, 0);
    Sphere2.Update();

    vtkMultiBlockDataSet MBDS = new vtkMultiBlockDataSet();
    MBDS.SetNumberOfBlocks(3);
    MBDS.SetBlock(0, Sphere1.GetOutput());
    // Leave block 1 NULL.  
    //NULL blocks are valid and should be handled by algorithms that process multiblock datasets.  
    //Especially when running in parallel where the blocks owned by other processes are NULL in this process
    MBDS.SetBlock(2, Sphere2.GetOutput());

    vtkCompositePolyDataMapper2 Mapper = new vtkCompositePolyDataMapper2();
    Mapper.SetInputDataObject(MBDS);


    vtkCompositeDataDisplayAttributes CDSA = new vtkCompositeDataDisplayAttributes();
    Mapper.SetCompositeDataDisplayAttributes(CDSA);
    // You can use the vtkCompositeDataDisplayAttributes to set the color,
    // opacity and visibiliy of individual blocks of the multiblock dataset.
    // Attributes are mapped by block pointers (vtkDataObject*), so these can
    // be queried by their flat index through a convenience function in the
    // attribute class (vtkCompositeDataDisplayAttributes::DataObjectFromIndex).
    // Alternatively, one can set attributes directly through the mapper using
    // flat indices.
    // This sets the block at flat index 3 red
    // Note that the index is the flat index in the tree, so the whole multiblock
    // is index 0 and the blocks are flat indexes 1, 2 and 3.  This affects
    // the block returned by mbds->GetBlock(2)
    Mapper.SetBlockColor(3, ActorColor);


    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);

    // Visualise the arrow
    ren.AddActor(Actor);
    ren.SetBackground(BgColor);
    ren.ResetCamera();

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

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

  }
}