[vtkusers] reliability of vtkStreamLine

[Sebastian Hirschberg]

Hello Song

I am using vtkStreamLine and I have encountered similar problems in some 
cases when I calculated the streamlines with the second order Runge Kutta 
solver. Switching to the fourth order Runge Kutta solver eliminated this 
problem in my case (Don't ask me why).

Sebastian

> Hi,gurus,
>    I am trying to execute vtkStreamLine continuously, the procedure is
> like :
>
> rendering streamline  -- get new position of start point -- rendering
> streamline
>
>   in an infinite loop unless give a signal to end the loop, the problem
> is , the program may stuck at the point of  vtkStreamLine::Update()
> after executed for some time, the period it can work is
> unpredictable......Does anybody has experienced such problem before ??
>   Thanks a lot!!!!