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MathGroup Archive 2008

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How can I make a fixed size arrowhead in 3D?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86831] How can I make a fixed size arrowhead in 3D?
  • From: John Browne <john.browne at alum.unimelb.edu.au>
  • Date: Sat, 22 Mar 2008 00:55:05 -0500 (EST)

I would like to make three-dimensional arrows with arrowheads of a  
fixed size in printer's points, no matter how long the arrows turn out  
to be in coordinate terms, or how big the graphic is made. In 2D this  
is effected by using the Small, Medium, Large values for the  
Arrowheads directive.

In 3D, line thickness, point size and text size can be given in  
printers points. And I can make a 3D arrowhead in the same coordinates  
as the arrow dimensions (by drawing some polygons at the end of a  
line), but how do I make it a fixed number of printers points wide and  
long, just like you can with line thickness, point size or text size?

Or is there some other way of getting a fixed size arrowhead in 3D?

Thanks

John


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