[vtkusers] VTK and JNI

[Jeff Lee]

any reason you're not using the java wrappers?
-Jeff

Gahide Jérôme wrote:

> Hi everybody,
>  
> I have a Java application that use VTK. This appliaction create all 
> the VTK objects we need.
> After the application create the object, I have to pass an vtkActor to 
> C++ using JNI (in order to print the render on a special big screen).
> For now, I have learned with some tutorials JNI and in order to 
> anderstand how to get back the C++ pointer on a vtkActor, I have 
> looked for the header file and the cxx that make the link beetween 
> Java and C++ but I don't find them.
>  
> So the question are : 
> - How can I get back the the C++ pointer on the vtkActor from the 
> jobject I have, when I program with JNI.
>  
>     example :
>     java file.
>     import vtk.*;
>     ...
>     private vtkActor va;
>     public native void getJNIvtkActor();
>        
>     cxx file .
>     JNIEXPORT void ...(JNIEnv* env, jobject obj){
>  
>         what can I do here to work with my vtkActor? and not a jobject
>        
>  
>     }
>  
> - Where can I find this file (.h .cxx) where Wrapping with Java is 
> defined. (with JNI?).
>  
> Thanks a lot.
> Jérôme.