[vtkusers] Crash with nested vtkPropAssembly

[diego0020]

Hello



I am using vtk '6.2.0' through the python wrappings, and I am also having
the same problem described in this thread. I am using the python wrappers,
and here is a minimum code that reproduces the problem

import vtk

ren_win = vtk.vtkRenderWindow()
ren = vtk.vtkRenderer()
ren_win.AddRenderer(ren)
iact = vtk.vtkRenderWindowInteractor()
iact.SetRenderWindow(ren_win)

prop1 = vtk.vtkPropAssembly()
ren.AddViewProp(prop1)
prop2 = vtk.vtkPropAssembly()
prop1.AddPart(prop2)

sphere_source = vtk.vtkSphereSource()
sphere_map = vtk.vtkPolyDataMapper()
sphere_map.SetInputConnection(sphere_source.GetOutputPort())
ac = vtk.vtkActor()
ac.SetMapper(sphere_map)
prop2.AddPart(ac)

iact.Initialize()
iact.Start()


Is there any way to work around this without re compiling vtk?

att
Diego A.


John Platt-3 wrote
>  
> If you try to render the prop assembly tree vtkActor > vtkPropAssembly >
> vtkPropAssembly (from leaf to root), vtkProp3D::PokeMatrix() crashes
> because this->CachedProp3D is NULL. The tree vtkActor > vtkPropAssembly
> renders OK.
> 
>  
> 
> The same problem was reported some years ago
> http://public.kitware.com/pipermail/vtkusers/2002-April/060530.html
> 
>  





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