ThreePointCubic class

A cubic polynomial composed of two curves that share a common center point.

The curve runs through three points: (0,0), the midpoint, and (1,1).

The Curves class contains a curve defined with this class: Curves.easeInOutCubicEmphasized.

The ThreePointCubic class implements third-order Bézier curves, where two curves share an interior midpoint that the curve passes through. If the control points surrounding the middle point (b1, and a2) are not colinear with the middle point, then the curve's derivative will have a discontinuity (a cusp) at the shared middle point.

See also:

  • Curves, where many more predefined curves are available.
  • Cubic, which defines a single cubic polynomial.
  • CatmullRomCurve, a curve which passes through specific values.
Inheritance

Constructors

ThreePointCubic(Offset a1, Offset b1, Offset midpoint, Offset a2, Offset b2)
Creates two cubic curves that share a common control point.
const

Properties

a1 → Offset
The coordinates of the first control point of the first curve.
final
a2 → Offset
The coordinates of the first control point of the second curve.
final
b1 → Offset
The coordinates of the second control point of the first curve.
final
b2 → Offset
The coordinates of the second control point of the second curve.
final
flipped → Curve
Returns a new curve that is the reversed inversion of this one.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
midpoint → Offset
The coordinates of the middle shared point.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
override
transform(double t) → double
Returns the value of the curve at point t.
inherited
transformInternal(double t) → double
Returns the value of the curve at point t.
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited