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Re: Are there Arrow-like objects in 3D

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98432] Re: [mg98380] Are there Arrow-like objects in 3D
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Thu, 9 Apr 2009 05:58:35 -0400 (EDT)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200904080903.FAA23153@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

In Mathematica 7, Arrow, with a list of triples of numbers as arguments, 
does give a 3D arrow thatyou can include in a Graphics3D expression

Alexei Boulbitch wrote:
> Dear community,
> 
> In the 3D graphics one can draw lines. I did not find however, such 
> objects as arrows. Are there operators which would enable one to 
> incorporate an arrow into a 3D graphics object (analogously to Arrow and 
> Arrowheads in 2D)?   To be more concrete, I would like to draw 
> programmatically a sphere together with its radius-vector to show its 
> radius on a sketch, or a cylinder together with an arrow with two heads 
> aside of it to indicate its height and this kind of things.
>  
> More generally, some graphics objects have their "3D versions" (as say, 
> Polygon and Line), but others (such as say, Disk) seem not to have. Is 
> there however, some trick to programmatically combine a 2D graphical 
> object (that has no 3D analog) with a 3D one (say, to draw a disk 
> together with a sphere)?
> 
> I use Math 6/WinXP
> 
> Best, Alexei
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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