[vtkusers] Problem adding actor to a renderer

Roger Blum rogerblum at hawaii.rr.com
Wed Apr 16 16:04:28 EDT 2008


Hi Goodwin,

Unfortunately it's a proprietary application with > 15000 lines of Tcl 
code. Extracting the problematic part isn't easy and I'm not sure if 
writing a special test script would cause the same problem, as it used 
to work the way it is set up.
I will post a test script if I'm able to reproduce the problem.

Thanks,
Roger

Goodwin Lawlor wrote:
> Roger,
> 
> Can you post a small tcl script illustrating this behaviour?
> 
> Goodwin
> 
> Roger Blum wrote:
>> Hello
>>
>> My Tcl application has 2 renderers: 1 showing an overview window and 1 
>> showing the interactive window where user can zoom, pan, etc.
>>
>> The background in both windows is a bitmap displayed with a 
>> vtkImageActor. This used to work perfectly till recently the overview 
>> window stopped showing the image. I can not find the reason for this 
>> sudden change.
>>
>> I' ve found that the actor doesn't get added to the renderer. Writing 
>> output before and after the AddActor command shows that the renderer 
>> has the same amount of actors before and after the call.
>> If I try to add the actor 'manually' from the built-in shell I can add 
>> it to the main window but it wouldn't add to the overview window.
>>
>> What would cause a renderer to not accept an (obviously correctly 
>> configured) actor?
> 
> 
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