[vtkusers] Actor -- isMovable?

[Cory Quammen]

Hi Piotr,

Perhaps you could clarify what you mean by moving an actor. It doesn't
sound like you have an interactor style that is manipulating the
actors by picking with the mouse. If you did, however, you could call
PickableOff() on the actor, which will prevent you from picking it and
thereby prevent movement of the actor.

How exactly are you moving the actors now?

Cory

On Wed, Nov 4, 2009 at 7:21 AM, Piotr Byzia <piotr.byzia at gmail.com> wrote:
> Hi,
>
> I want to set an actor to be movable or non-movable, depending on settings
> which I control through PyQT GUI.
> In other words, having a few actors on the scene I want to set checkboxes in
> my GUI that would freeze a given actor, and the rest of them to react as
> usual to the mouse movements / clicks.
>
> Regarding visibility of the actor I'm using GetProperty().SetOpacity(0.0) on
> an instance of any given actor.
> I can't see anything related to movement in the GetProperty() properties, I
> believe it's somewhere else?
>
> Here are most important parts of the code I'm using to generate a single
> actor:
>
> self.ren = vtk.vtkRenderer()
> self.ren.SetBackground(0, 0, 0)
> self.widget_3d.GetRenderWindow().AddRenderer(self.ren)
>
> apd=vtk.vtkAppendPolyData()
>
> for i in xrange(len(coordinates)):
>    line=vtk.vtkLineSource()
>
>    line.SetPoint1(coordinates[i][0]) # 1st atom coordinates for a given bond
>    line.SetPoint2(coordinates[i][1]) # 2nd atom coordinates for a given bond
>    line.SetResolution(21)
>    apd.AddInput(line.GetOutput())
>
> mapper = vtk.vtkPolyDataMapper()
> mapper.SetInput(apd.GetOutput())
> lines_actor = vtk.vtkActor()
> lines_actor.SetMapper(mapper)
> lines_actor.GetProperty().SetColor(0.7, 0.0, 0.0)
> lines_actor.GetProperty().SetOpacity(1.0)
>
> self.ren.AddActor(lines_actor)
>
>
> I found SetCurrentStyleToTrackballActor(), but I want to control this
> behavior from my GUI.
> Besides, trackball mode is very inconvenient in my case, with molecules in
> "lines" representation (it's hard to pick a single line).
>
> Thanks,
> Piotr Byzia
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-- 
Cory Quammen
Center for Computer Integrated Systems for Microscopy and Manipulation (CISMM)
Department of Computer Science
University of North Carolina at Chapel Hill
http://www.cs.unc.edu/~cquammen