Glyphs

Function

GSQuarticToCubic(_:_:_:)GSQuarticToCubicGSQuarticToCubic

Converts from a quartic curve segment to two cubic curve segments.

func GSQuarticToCubic(
    _ quartic: UnsafePointer<NSPoint>,
    _ cubic1: UnsafeMutablePointer<NSPoint>,
    _ cubic2: UnsafeMutablePointer<NSPoint>
)
void GSQuarticToCubic(
    const NSPoint quartic[5],
    NSPoint cubic1[4],
    NSPoint cubic2[4]
);
GSQuarticToCubic(
    quartic: NSPoint,
    cubic1: NSPoint,
    cubic2: NSPoint
)

Parameters

quartic

The five points of a quartic segment: start point, three control points, and the end point.

cubic1

The four points of a cubic segment: start point, two control points, and the end point.

cubic2

The four points of a cubic segment: start point, two control points, and the end point.

Discussion

The following constraints hold:

  • cubic1[0] == quartic[0]

  • cubic1[3] == cubic2[0]

  • cubic2[3] == quartic[4]

See Also

Curve Subdivision and Conversion