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Re: Graphics3D question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg110107] Re: Graphics3D question
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Wed, 2 Jun 2010 02:04:48 -0400 (EDT)

Your code won't evaluate, as a number of symbols used in it have no 
values specified: circls, dx, taba1, taba2, coords, imsize, xr, numbr.

If you don't want to show the full example at issue, at least give us a 
simplified where everything is defined.

On 6/1/2010 4:23 AM, S. B. Gray wrote:
> I have some spheres in a 3D display. Each sphere has a number.
>
> Graphics3D[{{RGBColor[0.4, 1.0, 0.9, .2],
>      		 EdgeForm[Gray],
>      Table[Cylinder[{circls[[dx, 1]],
>         circls[[dx, 1]] + .01*circls[[dx, 3]]}, circls[[dx, 2]]],
>         {dx, 1, Length[circls]}]},
>     	PointSize[0.015], Red,  Point[taba1],		
>     	PointSize[0.015], Blue, Point[taba2],
>     	Thickness[.003], White, Line[lines],
>                            LightBlue, Sphere[coords, .6],
>     	Yellow,
>     Table[Style[Text[xr, coords[[xr]]], FontSize ->  imsize/30,
>       FontFamily ->  "Arial Bold"],
>      					     {xr, 1, numbr}]},
>    Boxed ->  False, ImageSize ->  800]
>
> I notice two things that could be better:
>
> 1. The numbers do not get smaller on the more distant spheres. It would
> be better if they had perspective like the spheres themselves do.
>
> 2. When one sphere is occluded by another, its number is not occluded
> but appears in front of the front sphere along with the front number.
>
> Is there a way to make the numbers behave like other image elements do?
>
> Steve Gray
>

-- 
Murray Eisenberg                     murrayeisenberg at gmail.com
80 Fearing Street                    phone 413 549-1020 (H)
Amherst, MA 01002-1912


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