[vtkusers] New wiki Java examples

[Sebastien Jourdain]

Hi Jim,

I am lazy too and I could have done such kind of documentation, but
you've done it and that is GREAT !

I did learn VTK some time ago with Java and with the IDE completion...
So I know how hard it is.

Anyway, I could give some hints here that can be useful and that may
have a place in a wiki some time...

 - If you create a vtkPanel before using any VTK code, you don't need
the System.loadLibrary because the vtkPanel embed them...
- The vtkPanel provide you a renderer where you can add actors and
Reset the camera.
- the vtkPanel can be include in any Swing component, although it's a
AWT component so you may need to deal with HeavyWeight component for
menu and tooltip that might want to go below the 3d view.
- If you need to access the interactor for working with widget, you
might want to go to vtkCanvas, but you will have to setup yourself the
interaction style if you want a trackball mode.
- I've added recently some Enum for CellTypes and Helper for library
loading. (Sorry I don't remember what I've called them)
- The garbage collection management has been improved to be more
flexible to allow multi-threaded VTK management. Although VTK is NOT
thread safe. (See some other Java class about garbage collection.)
- what else... VTK is fun in Java !!!

Enjoy,

Seb
-

On Sun, Nov 14, 2010 at 6:19 PM, Jim Peterson <jimcp at cox.net> wrote:
> Sebastien,
> Thanks for having a look.
> The short answer is "Jim is a lazy good for nothing slug.".... <grin>
> The fact is I built my vtk/Java knowledge on the examples I found in the
> distribution, and at the time that was the tutorial steps 1 through 5. I see
> there are three others in infovis that might have been illuminating,
> however, I cannot get the TreeView example to display anything. Also, as far
> as I can tell, there is no help or documentation for vtkCanvas, vtkPanel, or
> vtkRenderWindowPanel. they consist of undocumented source code, so even if I
> create javadoc, I get no more information than the IDE provides by listing
> the available methods, parameter types and return types, so unless you think
> the
>
> I started with something that worked and stayed with it, and that was the
> very basic tutorial style code. While composing this I found the SimpleVTK
> example. It claims to have JRadioButtons to control the display, but
> actually only has one large friendly Exit button. The first time I ran it I
> did not recognize the cone because of the camera position, I now know enough
> to use the R interaction to reset the camera position. I may see if I can
> adapt that one to some of my existing projects.
>
> Feel free to post updates or interpretations of these or any of the other
> java examples to use the intended Java interfaces.
> thanks,
> Jim
>
> Sebastien Jourdain wrote:
>>
>> Thanks Jim for your contribution !
>>
>> Just a quick question. Why you didn't use the vtkPanel for the
>> renderer and render window ?
>>
>> Anyway, thanks again
>>
>> Seb
>>
>> On Sun, Nov 14, 2010 at 4:12 PM, Jim Peterson <jimcp at cox.net> wrote:
>>
>>>
>>> Dear list, I have demonstrated several interaction concepts in Java on
>>> the
>>> Examples Wiki here :
>>>
>>>
>>> http://www.vtk.org/Wiki/VTK/Examples/Java/ImplicitFunctions/ImplicitSphere
>>> Illustrates the shere source, and use of the tubefilter to create tubes
>>> around likes.
>>> http://www.vtk.org/Wiki/VTK/Examples/Java/Interaction/ExtrudeTest
>>> Illustrates the linear extrusion filter, the rotational extrusion filter,
>>> uses a CharEvent callback on the renderwindow interactor to toggle
>>> between
>>>  the trackballActor and trackballCamera style interactions. This example
>>> also demonstrates the end plane artifacts when the extrusion profile has
>>> concave characteristics.
>>> Please feel free to give feedback/comment/modify/add to them.
>>>
>>> Thanks,
>>>
>>
>
>