20 QuickDraw3D Mathematical Utilities

20 Negating Vectors

QuickDraw3D provides routines that you can use to negate (or reverse) vectors. The result of negating a vector is a vector having the same magnitude but the opposite direction as the original vector.

20 - Q3Vector2D_Negate
20 - Q3Vector3D_Negate

3D Graphics Programming with QuickDraw 3D - 17 OCT 1995

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