[Paraview] Visualizing rotating sphere

[Moreland, Kenneth]

On the contrary, that question does not sound simple at all.

So, I am assuming that you are representing the rotation of the particles by the angular velocity vector, which is pointing along the axis of rotation and whose magnitude is proportional to the speed of the rotation.  To my knowledge, there is no mechanism to convert that to rotational transformations on glyphs that change over time, and implementing it sounds painful.

If you're open to suggestion, you might consider a more static representation with a less symmetrical glyph that better represents the angular moment of the particles.  You could use either an arrow in the direction of the angular velocity or a disk in the plane of rotation (perpendicular to the angular velocity vector) or, better yet, both.  Both can be done with the glyph filter using the arrow and cylinder glyphs, respectively.  I've attached a screenshot demonstrating the idea.

-Ken

   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel

From: William Oquendo <woquendo at gmail.com<mailto:woquendo at gmail.com>>
Date: Mon, 8 Aug 2011 17:32:00 +0200
To: <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: [Paraview] Visualizing rotating sphere

Dear all,

I apologize in advance if this is an extremely simple question for you but I have not been able to find solution to the following: I am simulating a system of spheres interacting with each other. I am printing their information into a vtk-xml file as points with both scalar (mass, radius, number of contacts, etc) and vectorial (Position, Velocity, etc) attributes. I am using the sphere glyph to visualize the actual sphere, scaling them appropriately by radius. At the end of each simulation I have a time series described into a .pvd file which names and associate time to the individual vtk-xml file. The previous allows me to make animations of my system (one of the several ways to go, o course). I am representing the glyph as a Surface with Edges, in order to track rotations.

What I want to know is how can I represent my spheres correctly into paraview in order to show clearly their rotation. Let's assume the following simple example. The vertical axis is z. The particle is rotating with angular velocity along that axis. If I orient the glyph using the angular velocity, the glyph will orient along the z axis but then it wont rotate. I am very likely forgetting something useful in Paraview for this problem, so I really would like to know your suggestions.

Thanks in advance.

Best regards / Cordialmente,
--------------------------
William-Fernando Oquendo,
Phd Candidate,
skype-id: wfoquendop
Linux User # 321481
************************
Este correo puede carecer de tildes o eñes debido al teclado.

_______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.paraview.org/pipermail/paraview/attachments/20110808/561fbcab/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: AngularMoment.png
Type: image/png
Size: 41221 bytes
Desc: AngularMoment.png
URL: <http://www.paraview.org/pipermail/paraview/attachments/20110808/561fbcab/attachment-0001.png>