Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 20 - QuickDraw 3D Mathematical Utilities / QuickDraw 3D Mathematical Utilities Reference

QuickDraw 3D Mathematical Utilities / Negating Vectors

Q3Vector2D_Negate

You can use the Q3Vector2D_Negate function to negate a two-dimensional vector.

TQ3Vector2D *Q3Vector2D_Negate (
const TQ3Vector2D *vector2D, 
TQ3Vector2D *result);

vector2D

A two-dimensional vector.

result

On exit, the negation of the specified vector.

DESCRIPTION

The Q3Vector2D_Negate function returns, as its function result and in the result parameter, the vector that is the negation of the vector vector2D.