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Re: ViewPoint -> moving into scenes

  • To: mathgroup at smc.vnet.net
  • Subject: [mg40491] Re: ViewPoint -> moving into scenes
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Tue, 8 Apr 2003 03:02:46 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <b6re75$7na$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

ideally *there are* two points  ViewPoint and ViewCenter and
the difference between the ViewCenter and the ViewPoint is the
view direction. 
Moreover there is a ViewVertical, that specify the 
camera orientation.


And


gg = ParametricPlot3D[
       {(2 + Cos[v])*Cos[u], 
        (2 + Cos[v])*Sin[u], 
        Sin[v]}, 
       {u, 0, 2Pi}, {v, Pi, 2Pi}]

Show[
  gg,
  ViewPoint -> {0.5, 0.5, 0.16},
  ViewCenter -> {0.5, 0.5, 0.05},
  PlotRegion -> {{-6, 6}, {-6, 6}}
  ]

look like you where inside of the half-torus.

Regards
  Jens




Patrick McLean wrote:
> 
> In making animations using Mathematica, I would like to create the scene
> as a Graphics3D object and then be able to view the scene from a point
> *inside* the scene.
> 
> The option ViewPoint seems to be the most obvious thing to try.
> 
> But ViewPoint is taken to be a point *outside* the limits of a box
> around the object.
> 
> Ideally their would be two options - ViewPoint and ViewDirection.
> 
> Does anyone know how to make this work?


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