[vtkusers] wxpython + vtkAxesActor + wxVTKRenderWindow

[Michael Scarpa]

Hi Richard,

yes, you can use the wxVTKRenderWindowInteractor object.  Simply put:  
it is implemented such, that all relevant attribute access is  
forwarded to the interactor object.  As to your code, the problem is  
that the object `marker' that you create is destroyed by the garbage  
collector after the instantiation of `MainWindow'.  If you replace  
`marker' with `self.marker' in your code (in lines 33 to 39), the  
python object becomes an attribute of the `MainWindow' instance, and  
is not destroyed anymore.  I hope this helps.

With kind regards,

Michael


On 20 Apr, 2007, at 20:17, Richard A Rowe wrote:

> Dear vtkusers,
>
> I hope someone can help me with this problem... I'm using wxpython  
> to create a GUI for two vtk windows. Firstly is this a good choice  
> or would a different GUI choice or another language other than  
> python be more straight forward?
>
> I'd like to display xyz orientation widgets within the display  
> windows. I have coded a simple example of how to display the  
> vtkAxesActor within a vtkRenderWindow.
>
> However, since I'm currently using wxpython, I've been using  
> wxVTKRenderWindow(). I'm not sure how to set the interactor of this  
> or even if you can? I read somewhere that you should not use both  
> wxVTKRenderWindow() and wxVTKRenderWindowInteractor() together,  
> plus my efforts have resulted in no progress by doing so... It is  
> my understanding that to use the vtkAxesActor with the  
> vtkOrientationMarkerWidget one should set the interactor of the  
> vtkOrientationMarkerWidget to the window interactor.
>
> Is this possible with wxVTKRenderWindow()? A simple program is  
> below illustrating the problem.
>
> I will be very thankful if someone can help me out here.
>
> Kind Regards,
>
> Richard A Rowe.
>
> import wx
> from math import *
> import vtk
> from vtk.wx.wxVTKRenderWindowInteractor import  
> wxVTKRenderWindowInteractor
>
> class MainWindow(wx.Frame):
>     def __init__(self,parent,id,title):
>         wx.Frame.__init__(self,parent,wx.ID_ANY,title,size =  
> (600,600),
>         style = wx.DEFAULT_FRAME_STYLE | wx.NO_FULL_REPAINT_ON_RESIZE)
>
>         panel = wx.Panel(self)
>
>         widget = wxVTKRenderWindowInteractor(panel, -1)
>
>         ren = vtk.vtkRenderer()
>
>         renWin = widget.GetRenderWindow()
>         renWin.AddRenderer(ren)
>
>         sphere = vtk.vtkSphereSource()
>
>         sphereMapper = vtk.vtkPolyDataMapper()
>         sphereMapper.SetInputConnection(sphere.GetOutputPort())
>
>         sphereActor = vtk.vtkActor()
>         sphereActor.SetMapper(sphereMapper)
>
>         # AxesActor
>         axes = vtk.vtkAxesActor()
>         axes.SetShaftTypeToCylinder()
>
>         # Orientation marker to be used with vtkAxesActor.
>         marker = vtk.vtkOrientationMarkerWidget()
>         marker.SetOrientationMarker(axes)
>         marker.SetViewport(0,0,0.2,0.2)
>
>         marker.SetInteractor(widget)
>         marker.EnabledOn()
>         marker.InteractiveOff()
>
>         ren.AddActor(sphereActor)
>
>         sizer = wx.BoxSizer(wx.VERTICAL)
>         sizer.Add(widget, 1, wx.EXPAND | wx.ALL, 5)
>         self.SetSizer(sizer)
>         self.Layout()
>
>         self.Show(True)
>
>
> app = wx.PySimpleApp()
> frame = MainWindow(None, -1, "wxPython with vtk")
> app.MainLoop()
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