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

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

QuickDraw 3D Mathematical Utilities / Calculating Distances Between Points

Q3RationalPoint4D_DistanceSquared

You can use the Q3RationalPoint4D_DistanceSquared function to determine the square of the distance between two rational four-dimensional points.

float Q3RationalPoint4D_DistanceSquared (
const TQ3RationalPoint4D *p1, 
const TQ3RationalPoint4D *p2);

p1

A rational four-dimensional point.

p2

A rational four-dimensional point.

DESCRIPTION

The Q3RationalPoint4D_DistanceSquared function returns, as its function result, the square of the distance between points p1 and p2. The distance returned is a three-dimensional distance.