[vtkusers] VTK6 and Java Examples

[Ric Wright]

Thanks Gerrick and Sebastien.  Very helpful.

Ric


From:  Gerrick Bivins <Gerrick.Bivins at halliburton.com>
Date:  Monday, August 5, 2013 7:40 AM
To:  Ric Wright <rkwright at geofx.com>, "vtkusers at vtk.org" <vtkusers at vtk.org>
Subject:  RE: VTK6 and Java Examples

HA!
Yes, those are out of date BUT I believe you¹ll have more luck looking here:
{VTK_SOURCE_HOME}\VTK6.0.0\Wrapping\Java\vtk\sample
 
And here:
http://www.vtk.org/Wiki/VTK/Java_Wrapping
 
 
Gerrick

From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf
Of Ric Wright
Sent: Monday, August 05, 2013 7:02 AM
To: vtkusers at vtk.org
Subject: [vtkusers] VTK6 and Java Examples
 

I recently pulled down VTK 6.0.0 and installed it.  Getting it running
provided to be a little more fun than I anticipated but I got there
(http://blogs.geofx.com/).

 

However, part of my confusion arose from what I believe is out of date
tutorials.  In the first Java tutorial, the first part pf the example has a
"load library" method:

 
> 
> // In the static contructor we load in the native code.
> 
> // The libraries must be in your path to work.
> 
> static {
> 
>    System.loadLibrary("vtkCommonJava");
> 
>    System.loadLibrary("vtkFilteringJava");
> 
>    System.loadLibrary("vtkIOJava");
> 
>    System.loadLibrary("vtkImagingJava");
> 
>    System.loadLibrary("vtkGraphicsJava");
> 
>    System.loadLibrary("vtkRenderingJava");
> 
> }

 

  This doesn't work with VTK 6.0.0.  Instead, one gets an exception

 

 java.lang.UnsatisfiedLinkError: no vtkCommonJava in java.library.path

 

  This turns out to be reasonable as there is no vtkCommonJava library in
the lib folder.

 

  In the example Cone2.java, the loading of libraries is significantly
different:

 

       // 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);

     }

 

This works fine.  As it turns out, only the example Cone2.java uses the
"correct" method for loading the libraries.  Am I correct in assuming that
Cone 1 and Cone3-5 are simply out-of-date with respect to VTK 6.0.0?  Or am
I missing something?

 

I also note that only the simple "Sample" folder with its Cone examples even
has Java implementations.  I guess I am on my own to convert the examples to
Java myself (which is fine, that will be a good learning exercise) or will
that be a Quixotic effort on my part, tilting at an incomplete Java
windmill?

 

TIA,

Ric

 

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