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Re: "up" in 3D animations

  • To: mathgroup at
  • Subject: [mg26146] Re: "up" in 3D animations
  • From: Jens-Peer Kuska <kuska at>
  • Date: Thu, 30 Nov 2000 01:03:54 -0500 (EST)
  • Organization: Universitaet Leipzig
  • References: <8vvmhl$>
  • Sender: owner-wri-mathgroup at


the camera in Mathematica's 3D  graphic is determined by
the ViewPoint, ViewCenter and ViewVertical options.

You search the ViewVertical vector that is the usual "up" vector.


Frank Schobel wrote:
> Also I have a problem with Mathematica.
> I need to revolve a tree dimensional object, produced by the
> GarnetSurfaces package (Ross Moore-Dept of Mathematics, Macquari
> University North Ryde Australia around a certain axes.
> I solve the problem by calculating the vector coordinates of every new
> ViewPoint, but there is a problem when I rotate the object around
> horizontal axes. Half of  produced images ar the mirrored images of the
> other half, so that I can see only the "front face" of the object and
> not the back face. I think the solution is to fix every time the "up" of
> the systhem. This seams to be a problem that has  to be solved currently
> in any 3D animation, but for me is the first time that I am confronted
> with it.
> So, can some one help me? Is there in the Mathematica Package a certain
> function or atribut that specifies the "up"?
> Thank you,
> frank schobel

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