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

**References**:**Are there Arrow-like objects in 3D***From:*Alexei Boulbitch <Alexei.Boulbitch@iee.lu>