[vtkusers] Question on the usage of vtkPanel with Java

[Sebastien Jourdain]

Hi Frederic,

I believe you right, I think the antialiasing as only been implemented
on Windows for some reason but I'm not aware of any way to achieve
what you want. Normally, in Java you shouldn't need to call Render()
on the vtkPanel. Just some repaint should be enough.

Seb

On Mon, Oct 15, 2012 at 9:00 AM, TINGAUD Frederic
<Frederic.TINGAUD at murex.com> wrote:
> Hi all,
>
>
>
> I am trying to use the vtkPanel for Java on Windows, to create a simple
> test. I use the code you can see thereafter. You can notice a commented out
> panel.Render(). While it is commented out, the code works well, but the
> resulting graph will have ugly aliasing. If I uncomment the panel.Render()
> that is just before setting my JFrame to visible, two differences will be
> visible:
>
> -          The graph is way nicer, with smooth edges and faster drawings (I
> see it when doing time consuming operations like multiple AAFrames).
>
> -          One time out of 10, I will have a “ChoosePixelFormat failed“
> error and the application will crash.
>
>
>
> I assume that calling CreateWindow from vtkWin32OpenGLRenderWindow.cxx
> achieves way better results than letting Java do it, but I am wondering
> whether it is possible to obtain the same nice rendering while letting the
> JFrame do the win32 call and if I can protect myself in any way against the
> choosePixelFormat error?
>
>
>
> Regards,
>
>
>
> Frederic
>
>
>
> package murex.gui.component.chart3d;
>
>
>
> import javax.swing.JFrame;
>
>
>
> import vtk.vtkActor;
>
> import vtk.vtkCubeAxesActor;
>
> import vtk.vtkDelaunay2D;
>
> import vtk.vtkNativeLibrary;
>
> import vtk.vtkPanel;
>
> import vtk.vtkPoints;
>
> import vtk.vtkPolyData;
>
> import vtk.vtkPolyDataMapper;
>
> import vtk.vtkRenderer;
>
>
>
> public class minimalTest {
>
>     // 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[]) {
>
>         try {
>
>             javax.swing.SwingUtilities.invokeLater(new Runnable() {
>
>                 @Override
>
>                 public void run() {
>
>                     createVtkPanel();
>
>                 }
>
>             });
>
>         } catch(Exception e) {
>
>             e.printStackTrace();
>
>         }
>
>     }
>
>
>
>     /**
>
>      * @param panel
>
>      */
>
>     static void createVtkPanel() {
>
>         JFrame mainFrame = new JFrame();
>
>         vtkPanel panel = new vtkPanel();
>
>         vtkRenderer renderer = panel.GetRenderer();
>
>
>
>         vtkPoints points = getPoints();
>
>
>
>         vtkPolyData polyData = new vtkPolyData();
>
>         polyData.SetPoints(points);
>
>
>
>         vtkDelaunay2D delaunay = new vtkDelaunay2D();
>
>         delaunay.SetInputData(polyData);
>
>
>
>         vtkPolyDataMapper mapper = new vtkPolyDataMapper();
>
>         mapper.SetInputConnection(delaunay.GetOutputPort());
>
>
>
>         vtkActor surfaceActor = new vtkActor();
>
>         surfaceActor.SetMapper(mapper);
>
>         renderer.AddActor(surfaceActor);
>
>
>
>         vtkCubeAxesActor cubeAxesActor = new vtkCubeAxesActor();
>
>         cubeAxesActor.SetCamera(renderer.GetActiveCamera());
>
>         cubeAxesActor.SetBounds(points.GetBounds());
>
>         renderer.AddActor(cubeAxesActor);
>
>
>
>         renderer.ResetCamera();
>
>         mainFrame.add(panel);
>
>         mainFrame.setSize(600, 600);
>
> //        panel.Render();
>
>         mainFrame.setVisible(true);
>
>         panel.Render();
>
>     }
>
>
>
>     /**
>
>      * @return data to plot.
>
>      */
>
>     static vtkPoints getPoints() {
>
>         vtkPoints points = new vtkPoints();
>
>         points.InsertNextPoint(0.5, 0, 0.);
>
>         points.InsertNextPoint(1, 0, 1.);
>
>         points.InsertNextPoint(2, 0, 0.4);
>
>         points.InsertNextPoint(3, 0, 0.5);
>
>         points.InsertNextPoint(0.5, 1, 0.3);
>
>         points.InsertNextPoint(1, 1, 0.3);
>
>         points.InsertNextPoint(2, 1, 0.8);
>
>         points.InsertNextPoint(3, 1, 0.6);
>
>         points.InsertNextPoint(0.5, 2, 0.5);
>
>         points.InsertNextPoint(1, 2, 0.8);
>
>         points.InsertNextPoint(2, 2, 0.3);
>
>         points.InsertNextPoint(3, 2, 0.4);
>
>         return points;
>
>     }
>
> }
>
>
>
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