[Insight-users] [how to interrupt an registration process]

[Luis Ibanez]

Hi Joris,


Do you want to do something more than what "Ctrl-c" will do ?

e.g. do you want to change input parameters and restart ?

I would suggest you to start playing with a GUI library,
it will require some learning but it will pay off in the
long run.  Good options are : curses, FLTK, Qt, wxWindows.

Note also that recently we added some Tcl examples for
registration they are in


          Insight/Examples/Registration

Those are probably the more flexible for interacting with
the registration process.




    Luis


------------------------------------------------------------


Miller, James V (Research) wrote:
> In your command/observer, you would have to peek at the stdin buffer to see
> if a key had been pressed. Note that cannot just
> do a "cin >> keypress" type call because your app would block
> at every iteration (waiting for you to press the enter key).
> 
> But you should be able to peek into the queue to see if a
> key was pressed. Or maybe do a read/timeout type operation.
> In any case, this code would be standard C++ standard library
> calls or OS specific calls.  This capability is not ITK specific.
> 
> 
> 
> 
> 
>>-----Original Message-----
>>From: J Mst [mailto:gave_edgar@hotmail.com]
>>Sent: Tuesday, April 29, 2003 12:39 PM
>>To: insight-users@public.kitware.com
>>Subject: Re: [Insight-users] [how to interrupt an 
>>registration process]
>>
>>
>>Hi Luis,
>>
>>I've an command/observer which passes the current position etc. And i 
>>understand that i have to interrupt this execute() method. I 
>>am working 
>>within the command line but I don't know how i can do this.
>>
>>It would be great if I could stop the process by pressing a 
>>button eg. the 
>>enter button.
>>
>>A practical example would be great
>>
>>thanx in advance
>>
>>Joris
>>
>>
>>
>>
>>
>>
>>>From: Luis Ibanez <luis.ibanez@kitware.com>
>>>To: J Mst <gave_edgar@hotmail.com>
>>>CC: insight-users@public.kitware.com
>>>Subject: Re: [Insight-users] [how to interrupt an 
>>
>>registration process]
>>
>>>Date: Tue, 29 Apr 2003 08:52:34 -0400
>>>
>>>Hi Joris,
>>>
>>>The registration process invokes iteration events.
>>>You probably have defined already a Command/Observer
>>>that receives these events and print out the current
>>>parameters of the transform.
>>>
>>>In order to interrupt the registration, simply add
>>>a "Cancel" button in your GUI, and during the Execute()
>>>method of the Command/Observer check for the state of
>>>this new button.
>>>
>>>
>>>Regards,
>>>
>>>
>>>  Luis
>>>
>>>
>>>----------------------
>>>
>>>J Mst wrote:
>>>
>>>>hi all,
>>>>
>>>>I'm working on a project which includes registration and 
>>>
>>now I reached the 
>>
>>>>testing stage. I am constantly testing my code with 
>>>
>>different images. All 
>>
>>>>is going well, but one thing anoys me.
>>>>
>>>>When I see that the registration process is going in the 
>>>
>>wrong direction, 
>>
>>>>I cannot interrupt the process in any way. I read in the 
>>>
>>SoftwareGuide 
>>
>>>>that this can be done.. but I don't know how to do this.
>>>>
>>>>Is there a simple way to interrupt the registration process 
>>>
>>so I can 
>>
>>>>change the parameters of the registration an I don't have 
>>>
>>to wait till the 
>>
>>>>maximum number of iterations is reached.
>>>>
>>>>Thanx in advance for any reactions.
>>>>
>>>>ps: I am using a code based on the imageregistration4 example.
>>>>
>>>>Joris
>>>>
>>>>
>>>>_________________________________________________________________
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>>>>
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>>>>
>>>
>>>
>>>
>>
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>>
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> 
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