Parametric Points

QuickDraw 3D defines the TQ3Param2D and TQ3Param3D data structures to represent two- and three-dimensional parametric points.

typedef struct TQ3Param2D {
    float           u;
    float           v;
} TQ3Param2D;
typedef struct TQ3Param3D {
    float           u;
    float           v;
    float           w;
} TQ3Param3D;


u

The u component of a parametric point.

v

The v component of a parametric point.

w

The w component of a parametric point.

The u , v , and w components are sometimes represented by the letters s ,  t , and u , respectively. This book always uses u , v , and w .

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© 1997 Apple Computer, Inc.

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