[Paraview] Visualizing rotating sphere

[William Oquendo]

Yes, your suggestions seems very useful, since the arrows (and discs) can be
scaled by the magnitude of the angular velocity. Thanks!

Best regards / Cordialmente,
--------------------------
William-Fernando Oquendo,
Phd Candidate,
skype-id: wfoquendop
Linux User # 321481
************************
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On Mon, Aug 8, 2011 at 6:48 PM, Moreland, Kenneth <kmorel at sandia.gov> wrote:

>   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>
> Date: Mon, 8 Aug 2011 17:32:00 +0200
> To: <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.
>
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