Q3Param2D_Subtract (IM: QD3D)

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

Q3Param2D_Subtract
You can use the Q3Param2D_Subtract function to subtract one two-dimensional parametric point from another.
TQ3Vector2D *Q3Param2D_Subtract (
const TQ3Param2D *p1, 
const TQ3Param2D *p2, 
TQ3Vector2D *result);
p1
A two-dimensional parametric point.
p2
A two-dimensional parametric point.
result
On exit, a two-dimensional vector that is the result of subtracting the parametric point p2 from p1.

DESCRIPTION
The Q3Param2D_Subtract function returns, as its function result and in the result parameter, the two-dimensional vector that is the result of subtracting the parametric point p2 from p1.