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Re: Cuboid & RotateShape

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  • Subject: [mg15199] Re: [mg15184] Cuboid & RotateShape
  • From: Andrzej Kozlowski <andrzej at>
  • Date: Tue, 22 Dec 1998 04:01:32 -0500
  • Sender: owner-wri-mathgroup at

On Fri, Dec 18, 1998, Richard W. Klopp <rwklopp at> wrote:

>How come Cuboid[] appears to be designed such that RotateShape doesn't
>work on it? The following doesn't do any rotation:
>         Graphics3D[Cuboid [{0.1,1,1}]],
>		Pi/4,0,0]
>The following is a workaround:
>      AffineShape[Polyhedron[Cube],{0.1,1,1}],
>                 Pi/4,0,0]
>RotateShape looks for Polygon, Line, or Point objects to rotate, so
>Cuboid must somehow not be made of those things. Is this correct? Is
>there a reason that Cuboid[] is designed this way?

Cuboid is a Graphics3D primitive, just as a Rectangle or Polygon are 2D
primitives. Thus it is not made up of anything but itself. What you
probably want is Cube which you can find in the package
<<Geometry`Polytopes` . Note that you display it with 
Show[Polyhedron[Cube]] (no need to wrap it in Graphicds3D !). You can
see that it is made up of polygons by evaluating

Andrzej Kozlowski
Toyama International University

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