[vtkusers] VTK in a MultiTouch Environment

[Clinton Stimpson]

In Carbon a Window is the outer most container that contains the minimize, 
maximize, buttons and such.  Within that Window, you may have a hierarchy of 
HIViews.  You'll want to give VTK the HIView you want it to draw in.
Getting the content view from the Window is giving you the top most HIView in 
the hierarchy, which might not be the one you want.

If PyMT gives a pretty dynamic GUI and the VTK Window has a hard time 
following it, there is a vtkCarbonRenderWindow::UpdateGLRegion() to fix that.

So basically an X11 Window = Carbon HIView
The X11 window manager has something equivalent to a Carbon Window.
In Windows, both the container and views within the container are called 
Windows.

You should be able to make it work without offscreen.

Clint

On Tuesday 20 October 2009 12:37:03 pm Christopher Denter wrote:
> Hello again,
>
> after your last helpful reply we (that includes the two PyMT main
> developers and me) tried to integrate VTK with PyMT somehow. We made
> some progress, but now we need your help again.
>
> First we just tried to do what you, David, pointed out: See
> http://paste.pocoo.org/show/146039/ Now this always fills the entire PyMT
> window. We only got that working on linux and windows. Pymt uses Pyglet,
> which in turn uses Carbon on OSX. (Here we could not find a proper method
> to extract the window ID. See [0] for a more detailed description of this
> problem.)
> While I could somehow live without OSX support and work around the
> problem that arises from VTK's full-window filling habit (by zooming
> out and drawing the UI elements with PyMT 'above' the VTK rendering),
> we were unable to draw anything above the VTK renderings.
>
> So what we tried next was to render VTK into a framebuffer object,
> which would even allow us to rotate and resize the VTK rendering
> inside the PyMT window and draw other GUI elements above the VTK
> rendering.
> Unfortunately we were unable to make VTK render into a FBO. We tried
> transforming the Cone example into something like this:
> http://paste.pocoo.org/show/146030/ (Scroll down)
> The result of that code is a segmentation fault.
>
> So the main question is: How can we make VTK render into a FBO?
>
> Berk, I will keep you updated if this project works out.
>
>
> In the hope that you can again help me out,
> 	Christopher
>
> [0]
> http://groups.google.com/group/pyglet-users/browse_thread/thread/968f235b70
>efb8b7
>
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