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

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

QuickDraw 3D Mathematical Utilities / Managing Quaternions

Q3Quaternion_IsIdentity

You can use the Q3Quaternion_IsIdentity function to determine whether a quaternion is the identity quaternion.

TQ3Boolean Q3Quaternion_IsIdentity (
const TQ3Quaternion *quaternion);

quaternion

A quaternion.

DESCRIPTION

The Q3Quaternion_IsIdentity function returns kQ3True if the quaternion parameter is the identity quaternion; Q3Quaternion_IsIdentity returns kQ3False otherwise.