Hi,
I tried to control my paraview from my Xoom tablet, throw plugin
successfully. I used a plugin that opens a port and listen to python
commands, then from my tablet I send python command to rotate zoom, pan
clip... (so now a have a realy big pad ;) ).
for more information read:
http://www.paraview.org/pipermail/paraview/2012-January/023704.html
Felipe
On 29/05/2012 07:23, David Zemon wrote:
Hello,
*Overview*
I am attempting to control ParaView v3.14.1 with something other than
a mouse and keyboard. I don't know how to do this - I've taken some
wild guesses and bits 'n' pieces have started to work. I could really
use some help from someone that knows the inner-workings though.
*What I'd Like to Happen*
I have an class, foo, with some events and callbacks of its own. Foo
is not related to ParaView in any way other than foo needs to make
ParaView do stuff as it sees fit. In the callbacks, I'd like to do
things like zoom, pan and rotate. Eventually I'd like foo to be able
add filters and such too, but that's a long way down the road.
*What I've Tried*
foo has 3 events similar to OnButtonDown, OnMouseMove, and OnButtonUp.
I figure, why not just call these methods (within
vtkPVInteractorStyle) from foo? This is what I've been trying.
I have made foo a friend of vtkPVInteractorStyle. I've created a
global pointer variable, g_pInteractorStyle, which points to
vtkPVInteractorStyle.
I've created a mutator and two integer variables - m_x and m_y -
within foo to hold mouse coordinates. Any time that
GetEventPosition()[0/1] is called, I save those values to local
variables - x and y - and pass them into foo's mutator. This way, any
time a real mouse is used, foo gets updated coordinates. This also now
gives me starting points to pass into OnMouseMove.
From foo I first call g_pInteractorStyle->OnButtonDown(3, 0, 0).
Ideally, this will initiate zoom, which it seems to.
Following that, I make a series of calls following the pattern:
g_pInteractorStyle->Current->OnMouseMove(m_x, m_y + /offset/,
g_pInteractorStyle->CurrentRenderer, g_pInteractorStyle->Interactor),
where /offset/ is some integer value from -49 to 49 and neither m_x or
m_y change during the series of calls.
Finally, I call g_pInteractorStyle->OnButtonup(3).
I have also commented out one line each from OnButonDown and
OnButtonUp:
this->InvokeEvent(vtkCommand::[Start/End]InteractionEvent). With these
two lines in place, OnButtonUp causes a crash. Without these lines in
place (when they're commented out), ParaView acts just fine. I know
this is NOT a good fix and I'm open to other suggestions, but it (this
aspect) seems to be working at the moment.
I've also tried looking into the QT libraries and moving the cursor
via QT. Unfortunately, I've been unable to find the right cursor
because nothing I've done has had any effect on the cursor I'm staring
at (tried setPos() and setShape()).
*The Problem*
OnMouseMove() has caused problem after problem. In our current setup
OnButtonDown(3, 0, 0) works great. OnMouseMove() kills paraview when
it reaches vtkPVRenderView::Render() called from somewhere within
vtkPVGenericRenderWindowInteractor. In a weak attempt to "fix" the
problem, I tried commenting out this Render() call. Nothing too major
seemed to break except that I'm blind as i try to zoom until I release
the mouse button (tests were done using the mouse at first). In other
words: Everything still working, but no rendering during zoom - only
renders upon releasing the mouse. I now try it with foo, and it acts
as though OnButtonUp(3) was never called - the whole foo routine
finishes then I use the mouse and click somewhere to start a new
interaction, and it zooms to wherever it should have zoomed when it
finished foo's routines.
So two options: I can either let it die every time it tries to render,
or hold off rendering until I finish "moving the mouse" and then still
be required to click the mouse somewhere when I'm finished.
This is broken. And something tells me I'm going about this in a very
wrong fashion. How should I be doing this?
Thanks,
David Zemon
Computer
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--
Felipe Bordeu Weldt
Ingénieur de Recherche
-------------------------------------
Tél. : 33 (0)2 40 37 16 57
Fax. : 33 (0)2 40 74 74 06
[email protected]
Institut GeM - UMR CNRS 6183
École Centrale Nantes
1 Rue de La Noë, 44321 Nantes, FRANCE
-------------------------------------
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