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

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

QuickDraw 3D Mathematical Utilities / Subtracting Points

Q3Point2D_Subtract

You can use the Q3Point2D_Subtract function to subtract one two-dimensional point from another.

TQ3Vector2D *Q3Point2D_Subtract (
const TQ3Point2D *p1, 
const TQ3Point2D *p2, 
TQ3Vector2D *result);

p1

A two-dimensional point.

p2

A two-dimensional point.

result

On exit, a two-dimensional vector that is the result of subtracting the point p2 from p1.

DESCRIPTION

The Q3Point2D_Subtract function returns, as its function result and in the result parameter, the two-dimensional vector that is the result of subtracting the point p2 from p1.