Cubic class

This class holds the anchor and control point data for a single cubic Bézier curve, with anchor points (anchor0X, anchor0Y) and (anchor1X, anchor1Y) at either end and control points (control0X, control0Y) and (control1X, control1Y) determining the slope of the curve between the anchor points.

Annotations

Constructors

Cubic(double anchor0X, double anchor0Y, double control0X, double control0Y, double control1X, double control1Y, double anchor1X, double anchor1Y)
Creates a Cubic that holds the anchor and control point data for a single Bézier curve, with anchor points (anchor0X, anchor0Y) and (anchor1X, anchor1Y) at either end and control points (control0X, control0Y) and (control1X, control1Y) determining the slope of the curve between the anchor points.
Cubic.circularArc(double centerX, double centerY, double x0, double y0, double x1, double y1)
Generates a bezier curve that approximates a circular arc, with p0 and p1 as the starting and ending anchor points. The curve generated is the smallest of the two possible arcs around the entire 360-degree circle. Arcs of greater than 180 degrees should use more than one arc together. Note that p0 and p1 should be equidistant from the center.
factory
Cubic.empty(double x0, double y0)
Generates an empty Cubic defined at (x0, y0).
Cubic.fromPoints(Point anchor0, Point control0, Point control1, Point anchor1)
Cubic.straightLine(double x0, double y0, double x1, double y1)
Generates a bezier curve that is a straight line between the given anchor points. The control points lie 1/3 of the distance from their respective anchor points.
factory

Properties

anchor0X → double
no setter
anchor0Y → double
no setter
anchor1X → double
no setter
anchor1Y → double
no setter
control0X → double
no setter
control0Y → double
no setter
control1X → double
no setter
control1Y → double
no setter
hashCode → int
The hash code for this object.
no setteroverride
points → List<double>
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

calculateBounds(List<double> bounds, {bool approximate = false}) → void
Returns the true bounds of this curve, filling bounds with the axis-aligned bounding box values for left, top, right, and bottom, in that order.
convexTo(Cubic next) → bool
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
pointOnCurve(double t) → Point
Returns a point on the curve for parameter t, representing the proportional distance along the curve between its starting point at anchor0 and ending point at anchor1.
reverse() → Cubic
Utility function to reverse the control/anchor points for this curve.
split(double t) → (Cubic, Cubic)
Returns two Cubics, created by splitting this curve at the given distance of t between the original starting and ending anchor points.
toString() → String
A string representation of this object.
override
transformed(PointTransformer f) → Cubic
zeroLength() → bool

Operators

operator *(double x) → Cubic
operator +(Cubic o) → Cubic
operator /(double x) → Cubic
operator ==(Object other) → bool
The equality operator.
override