[vtkusers] Vtk interactor

[R K Shyam Prakash]

Hello Tom/Users,
		I tried to lock using a vtkMutexLock just before calling
Render() in the animation thread. But it did not work. The application
still crashes when the user clicks on the render window when the
animation is in progress. I am not sure if what I did was right. If you
have a sample code, that will be of great help ?

Thanks
Shyam


> -----Original Message-----
> From: vtkusers-bounces at vtk.org 
> [mailto:vtkusers-bounces at vtk.org] On Behalf Of tom fogal
> Sent: Wednesday, June 09, 2004 11:42 PM
> To: R K Shyam Prakash
> Cc: vtkusers at vtk.org
> Subject: Re: [vtkusers] Vtk interactor
> 
> 
> Use a mutex.
> Threading libraries usually provide a 'mutex_lock()' function 
> that will block until the mutex is acquired.
> 
> HTH,
> 
> -tom
> 
>  <005a01c44e4c$6097f930$8c0aa8c0 at questtw.questglobal.com>"R K 
> Shyam Prakash" writes:
> >Hello,
> >
> >	I am using vtk4.2.2 with MFC (VC++6.0). I am trying to animate 
> >rotation of a cylinder in a separate thread. However, if any mouse 
> >events are fired during animation, program crashes as two 
> threads are 
> >accessing simultaneously. So I would like to block my 
> interactor until 
> >the animation is complete. How can I achieve this. I tried 
> overriding 
> >vtkWin32RenderWindowInteractor. Following is the code.
> >
> >void CustomInteractor::OnLButtonDown(HWND wnd,UINT 
> nFlags,int X,int Y){
> >	if(model->IsAnimating()){
> >		return;
> >	}
> >
> >	
> >this->vtkWin32RenderWindowInteractor::OnLButtonDown(wnd,nFlags,X,Y);
> >}
> >
> >Initially it works fine. When the animation starts, it successfully 
> >blocks the mouse events. However, even after animation is completed
> >(model->IsAnimating() returns false), the interactor (super 
> class) does 
> >not process the mouse events. Am I doing some thing wrong 
> here? Please 
> >suggest.
> >
> >Thanks
> >Shyam
> >
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