Quaternions

QuickDraw 3D defines quaternions as quadruples of floating-point numbers. A quaternion is defined by the TQ3Quaternion data type.

For a description of quaternions and their use in computer graphics, see the article by Hart, Francis, and Kaufman listed in the bibliography.

typedef struct TQ3Quaternion {
    float           w;
    float           x;
    float           y;
    float           z;
} TQ3Quaternion;


w

The w component of a quaternion.

x

The x component of a quaternion.

y

The y component of a quaternion.

z

The z component of a quaternion.

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© 1997 Apple Computer, Inc.

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