[vtkusers] Problem with conversion from VRML into VTK file

[Kristian Sons]

Dear RimAY,

the vtkVRMLImporter creates one vtkActor per VRML Shape node. So if yo 
have many Shapes in your VRML scene you will have to iterate over the 
scene, and you will get one PolyData per Shape.

If you intend to have one PolyData as result, you can use the 
vtkAppendFilter to append the meshes. Please be aware that point/cell 
attributes that are not available in all the polydata objects will be 
discarded.

Another way would be to combine the geometry using a composite data 
type. vtkMultiBlockData is a good candidate. Several filters support 
this "new" kind of of data object. You can use the 
vtkXMLMultiBlockDataWriter to serialize your data.

Hope that helps,
   Kristian

RimAY schrieb:
> Dear All , 
> 
> I try to convert a vrml file into vtk file, my problem is that i got only a
> part of the image in the vtk format.
> this is the code i used:
> 
> target = vtkVRMLImporter()
> target.SetFileName("WRL path")
> target.Read()
> 
> actors = vtkActorCollection() 
> actors = target.GetRenderer().GetActors()
> actors.InitTraversal()
> 
> pDataset = actors.GetNextActor().GetMapper().GetInput()
> 
> geometryFilter = vtkGeometryFilter()
> geometryFilter.SetInput(pDataset)
> 
> filter1 = vtkImageDataGeometryFilter()
> filter1.SetInput(pDataset)
>  
> data = vtkPolyData()
> data = geometryFilter.GetOutput()
> data.Update()
> 
> 
> writer = vtkXMLPolyDataWriter()
> writer.SetFileName("vtk path")
> writer.SetInput(data)
> writer.Write()
> 
> print "fichier crée"
> 
> Any help will be very appreciated
> 
> Best Regards

-- 

Kristian Sons
Actor3D - Agentur für interaktive 3D-Medien
Chiemgaustr 62
D-81549 München / Germany

tel     +49-89-20327854
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mail    kristian.sons at actor3d.com
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