[Paraview-developers] following a cell

[Eric E. Monson]

I've never tried something like this, but I bet it would be possible to use Python to create a path-based camera track based on those coordinates. When you set an "orbit" type of camera track in the animation view, you set the points for that orbit and it doesn't have to be a closed path. 

If you go into the Python shell, you can manipulate the points of the path:

pm = servermanager.ProxyManager()
# Grab out the animation proxy that is the camera path you set up in the animation view
# for me it was element [1] after looking at all the values
cam = pm.GetProxiesInGroup('animation').values()[1]
# The first key frame contains that path
kf0 = cam.GetProperty('KeyFrames')[0]
# Then, the points can be set through the PositionPathPoints property
pointsList = kf0.GetProperty('PositionPathPoints')
kf0.PositionPathPoints = pointsList.GetData() + [1,0,0]

Don't know if it will work, but setting a path point every so many time step values based on the cell location might be worth a try...

-Eric

------------------------------------------------------
Eric E Monson
Duke Visualization Technology Group


On Apr 21, 2010, at 9:36 AM, David E DeMarle wrote:

> Hmmm,
> 
> Plot selection over time will give you access to the cells location as
> it moves over time, but I don't know of any way to automatically tie
> that information to the camera's position in an animation track.
> 
> Perhaps somebody else will chime in with some ideas.
> 
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 28 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-371-3971 x109
> 
> 
> 
> On Tue, Apr 20, 2010 at 7:09 PM, Scott, W Alan <wascott at sandia.gov> wrote:
>> Can ParaView, during an animation, follow one cell?  For instance, I want to
>> watch the bumper of a car hit a guard rail.  The bumper has an initial
>> velocity, with a very strong deceleration.
>> 
>> Thanks,
>> 
>> Alan
>> 
>> --------------------------------------------------------
>> W. Alan Scott
>> ParaView Support Manager
>> 
>> GAITS
>> Sandia National Laboratories, MS 0822
>> Org 9326 - Building 880 A1-C
>> (505) 284-0932   FAX (505) 845-0833
>> ---------------------------------------------------------
>> 
>> 
>> 
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