[vtkusers] Multiple vtk3DSImporter importers in a render window

[Bill Lorensen]

You are correct. Importer's do not behave as readers. This is because
they often include camera and or light information as well as actors
with properties. Importers have a method SetRenderWindow that you can
use to control where they appear.

>From vtkImporter.h:
  // Description
  // Set the vtkRenderWindow to contain the imported actors, cameras and
  // lights, If no vtkRenderWindow is set, one will be created and can be
  // obtained with the GetRenderWindow method. If the vtkRenderWindow has been
  // specified, the first vtkRenderer it has will be used to import the
  // objects. If the vtkRenderWindow has no Renderer, one will be created and
  // can be accessed using GetRenderer.
  virtual void SetRenderWindow(vtkRenderWindow*);
  vtkGetObjectMacro(RenderWindow,vtkRenderWindow);

In your example try  setting
importer SetRenderWindow renWin
importer2 SetRenderWindow renWin

If you need to manipulate the individual actors it is a bit more
complicated since the importers may have multiple actors.

On Sat, May 12, 2012 at 7:04 AM, Dora Szasz <dora.szasz at yahoo.com> wrote:
> Hello vtk users,
>
> How can I integrate in a render window multiple vtk3DS importers?
> I have tried the following code in Tcl, but I have received the following
> error: "Object named importer could not find requested method:
> GetOutputPort", so the importer is not behaving like a reader.
>
> How can I do this?
>
>
> Thank you a lot,
> Dora Szasz
>
> package require vtk
> package require vtkinteraction
>
> # Create the importer and read a file
> vtk3DSImporter importer
>   importer ComputeNormalsOn
>   importer SetFileName "204_c_01_v14a_body_3.3ds"
>   importer Read
>
> vtk3DSImporter importer2
>   importer2 ComputeNormalsOff
>   importer2 SetFileName "216_03_v6f_corp-ns3.3ds"
>   importer2 Read
>
> vtkPolyDataNormals normals
>   normals SetInputConnection [importer GetOutputPort]
>   normals FlipNormalsOn
> vtkPolyDataMapper importerMapper
>   importerMapper SetInputConnection [normals GetOutputPort]
> vtkActor importerActor
> importerActor SetMapper importerMapper
> importerActor SetOrigin 2 1 3
> importerActor SetPosition 2.25 0 0
> [importerActor GetProperty] SetColor 1 0 1
> vtkPolyDataNormals normals2
>   normals2 SetInputConnection [importer2 GetOutputPort]
>   normals2 FlipNormalsOn
> vtkPolyDataMapper importer2Mapper
>   importer2Mapper2 SetInputConnection [normals2 GetOutputPort]
> vtkActor importer2Actor
> importer2Actor SetMapper importer2Mapper
> importer2Actor SetPosition 0 0 0.25
> [importer2Actor GetProperty] SetColor 0 1 0
> vtkRenderer ren1
> vtkRendererWindow renWin
> renWin AddRenderer ren1
> vtkRendererWindowInteractor iren
> iren SetRenderWindow renWin
> ren1 AddActor importerActor
> ren1 AddActor importer2Actor
> ren1 SetBackground 0.1 0.2 0.4
> renWin SetSize 200 200
>
> # Set up the camera to get a particular view of the scene
> vtkCamera camera
>     camera SetClippingRange 21.9464 30.0179
>     camera SetFocalPoint 3.49221 2.28844 -0.970866
>     camera SetPosition 3.49221 2.28844 24.5216
>     camera SetViewAngle 30
>     camera SetViewUp 0 1 0
> ren1 SetActiveCamera camera
>
> # Set the user method (bound to key 'u')
> #
> iren AddObserver UserEvent {wm deiconify .vtkInteract}
> renWin Render
>
> # Withdraw the default tk window
> wm withdraw .
>
>
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