Q: Anyone knows this error message?

[Gala'Vi and Liss @ Mainframe Country]

This error means that the data is not coming through, even though you do a
SetInput() for the vtkMapper. To see what you are doing and what is
happening, try to do the PrintSelf(cerr, 1) on the stuff that you are
giving to the mapper. Say if you have some filter, say

filter->GetOutput()->PrintSelf(cerr, 1);

this will show on the screen the info about the dataset that is coming in.
If that command will SegFault that means that there is just plain no data
and you need to check the way you are generating the input for the filter.
If it will not SefFault but actually print some data on the console, then
examine the dump. Pay attention to the range, the bounds and the lines on
the very bottom of the dump that tell you the polydata info: # of lines,
points, triangles, etc.

Hope this helps.
Good luck.
Gala'Vi
NCSA, UIUC 

//***********************************************
  -- There is always a way, 
        you just have to find it.
              (B.Hambly "Children Of The Jedi")
//***********************************************

On Fri, 24 Sep 1999, Mirco Mueller wrote:

> Greetings vtk-gurus!
> 
> During runtime of a vtk-program I get this error
> 
>     ERROR In vtkOpenGLPolyDataMapper.cxx, line 133
>     vtkOpenGLPolyDataMapper (0x107043c0): No input!
> 
> when I do a
> 
>     ren->AddActor( some_actor );
> 
>     Any idea what could cause this? The mapper is set up with SetInput()
> method before the actor gets properly set up with the SetMapper()
> method.
> 
> Thanks in advance for your time and kind advice!
> 
> Best regards...
> 
> Mirco
> 
> 
> 
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