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How it works
Reversing Z values in a 3D object
If you make a 3D object, then place it on your plant and realize that it is
upside-down or inside-out, it means that you were pushing or pulling in the wrong
direction when you dragged points in the Z dimension. Just return to the 3D
object editor and reverse the Z values. The effect is something like this:
Click Reverse. You may not be able to see the effect if you don't have a rotated view of the 3D object showing; click Rotate mode and rotate the 3D object in one of the two View panels. Try reversing the triangles a few times and you'll understand how it works.
Updated: March 10, 1999. Questions/comments on site to email@example.com.
Copyright © 1998, 1999 Paul D. Fernhout & Cynthia F. Kurtz.