4 Data Structures
TQ3RationalPoint4D
data type for defining control points of rational surfaces and solids. The TQ3RationalPoint4D
data type represents homogeneous points in four-dimensional space. To get the equivalent three-dimensional point, divide the point's x
, y
, and z
components by the w
component.
typedef struct TQ3RationalPoint3D { float x; float y; float w; } TQ3RationalPoint3D; typedef struct TQ3RationalPoint4D { float x; float y; float z; float w; } TQ3RationalPoint4D;x
The x coordinate (abscissa) of a rational point.y
The y coordinate (ordinate) of a rational point.z
The z coordinate of a rational point.w
The weight of a rational point.
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