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MathGroup Archive 2001

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Re: Text Statements in 3D Graphics

  • To: mathgroup at smc.vnet.net
  • Subject: [mg31573] Re: Text Statements in 3D Graphics
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 14 Nov 2001 03:41:49 -0500 (EST)
  • Organization: Universitaet Leipzig
  • References: <9sl359$dkm$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

this can't work because, true 3d text would require
that the outlines of the characters in Text[] are converted into
3d polygones, otherwise Mathematica's hidden line removal can't find out
if the polygons from the characters are hidden by any other polygon.

Regards
  Jens

David Park wrote:
> 
> Dear MathGroup
> 
> Mathematica treats text in 3D graphics so that it is projected forward and
> is always visible. In other words, text is never hidden behind a surface.
> However, this is often undesirable. Suppose one wishes to label certain
> points on a 3D object and then rotate it with SpinShow. It is better not to
> display the text labels that are behind the surface. Otherwise the eye
> naturally attaches the label to the part of the surface that can be seen,
> not to speak of text clutter if there are a number of labeled points. It
> would be much nicer if there were an option to suppress Text statements if
> the application point is hidden. Perhaps this should even be the normal
> behavior. Text in 3D which should always show can be added with the Epilog
> option.
> 
> David Park
> djmp at earthlink.net
> http://home.earthlink.net/~djmp/


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