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