How to draw OUTLINES on 3D shapes? [REPOST]
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg1638] How to draw OUTLINES on 3D shapes? [REPOST]
- From: Zorro <berriz at husc.harvard.edu>
- Date: Sat, 8 Jul 1995 03:15:27 -0400
- Organization: Harvard University, Cambridge, Massachusetts
From reading Mr. Fairley's reply to my earlier post, I realized that I
had not been entirely clear, so here is (I hope) a clearer statement
of the problem.
How can I get Mathematica to draw 3D shapes (specifically, spheres and
cylinders) as "filled in outlines"? By "outline" I mean that of the
2D representation (as shown on the computer screen) of the 3D object.
For example, whereas a 2D representation of a cylinder would look
something like
__________
()_________)
the *outline* of this representation would look like
__________
(__________)
Similarly, for a cube, a 2D representation would be
______
/ /|
/_____/ |
| | |
| | /
|_____|/
and the outline of this representation would be
______
/ |
/ |
| |
| /
|______/
It's important to note that I'm not referring to the silhouette (which
would be, for example, the 2D figure obtained by filling in the
outline above:
////////
/////////
/////////
/////////
////////
) but to the actual 1-dimensional countour we use to represent the
*boundary* of the silhoutte.
Z.