CubicLine class - signature library

Constructors

CubicLine.new({required OffsetPoint start, required Offset cpStart, required Offset cpEnd, required OffsetPoint end, Offset? upStartVector, Offset? upEndVector, double startSize = 0.0, double endSize = 0.0}): Creates a CubicLine segment.

Properties

cpEnd → Offset: The second control point, influencing the curve's shape from the end point.
final
cpStart → Offset: The first control point, influencing the curve's shape from the start point.
final
direction → double: The angle of this offset as radians clockwise from the positive x-axis, in the range -pi to pi, assuming positive values of the x-axis go to the right and positive values of the y-axis go down.
no setterinherited
distance → double: The magnitude of the offset.
no setterinherited
distanceSquared → double: The square of the magnitude of the offset.
no setterinherited
dx → double: The x component of the offset.
no setterinherited
dy → double: The y component of the offset.
no setterinherited
end → OffsetPoint: The ending point of the cubic Bezier curve.
final
endSize ↔ double: The size ratio of the line at its ending point (typically 0.0 to 1.0).
getter/setter pair
hashCode → int: The hash code for this object.
no setteroverride
isDot → bool: Indicates if this line segment represents a 'dot' (i.e., start and end points are the same, and velocity is zero).
no setter
isFinite → bool: Whether both components are finite (neither infinite nor NaN).
no setterinherited
isInfinite → bool: Returns true if either component is double.infinity, and false if both are finite (or negative infinity, or NaN).
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
start → OffsetPoint: The starting point of the cubic Bezier curve.
final
startSize ↔ double: The size ratio of the line at its starting point (typically 0.0 to 1.0).
getter/setter pair
upEndVector → Offset: The 'Up' vector for the end point, calculated if not already cached. This vector is perpendicular to the curve's direction at the end.
no setter
upStartVector → Offset: The 'Up' vector for the start point, calculated if not already cached. This vector is perpendicular to the curve's direction at the start.
no setter

Methods

combineVelocity(double inVelocity, {double velocityRatio = 0.65, double maxFallOff = 1.0}) → double: Combines the line's intrinsic velocity with an inVelocity based on a velocityRatio.
cpeDown(double size, double maxSize) → Offset: Returns the 'Down' offset for the end point, scaled by the end radius.
cpeUp(double size, double maxSize) → Offset: Returns the 'Up' offset for the end point, scaled by the end radius.
cpsDown(double size, double maxSize) → Offset: Returns the 'Down' offset for the start point, scaled by the start radius.
cpsUp(double size, double maxSize) → Offset: Returns the 'Up' offset for the start point, scaled by the start radius.
endRadius(double size, double maxSize) → double: Returns the calculated radius for the end point based on size, maxSize, and endSize.
length({double accuracy = 0.1}) → double: Calculates the approximate length of the cubic curve with a given accuracy.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
point(double t) → Offset: Calculates a point on the cubic curve at a given parameter t.
scale(double scaleX, double scaleY) → CubicLine: Returns a new offset with the x component scaled by scaleX and the y component scaled by scaleY.
override
startRadius(double size, double maxSize) → double: Returns the calculated radius for the start point based on size, maxSize, and startSize.
toArc({double? deltaSize, double precision = 0.5}) → List<CubicArc>: Converts this cubic line into a list of CubicArc segments. This is used to approximate the curve with a series of arcs for drawing.
toPath() → Path: Converts this cubic line segment into a Flutter Path object.
toShape(double size, double maxSize) → Path: Converts this cubic line into a closed Path representing a filled shape. This is typically used for drawing thick, filled lines.
toString() → String: A string representation of this object.
inherited
translate(double translateX, double translateY) → CubicLine: Returns a new offset with translateX added to the x component and translateY added to the y component.
override
velocity({double accuracy = 0.0}) → double: Calculates the velocity along this line segment.

Operators

operator %(double operand) → Offset: Modulo (remainder) operator.
inherited
operator &(Size other) → Rect: Rectangle constructor operator.
inherited
operator *(double operand) → Offset: Multiplication operator.
inherited
operator +(Offset other) → Offset: Binary addition operator.
inherited
operator -(Offset other) → Offset: Binary subtraction operator.
inherited
operator /(double operand) → Offset: Division operator.
inherited
operator <(OffsetBase other) → bool: Less-than operator. Compares an Offset or Size to another Offset or Size, and returns true if both the horizontal and vertical values of the left-hand-side operand are smaller than the horizontal and vertical values of the right-hand-side operand respectively. Returns false otherwise.
inherited
operator <=(OffsetBase other) → bool: Less-than-or-equal-to operator. Compares an Offset or Size to another Offset or Size, and returns true if both the horizontal and vertical values of the left-hand-side operand are smaller than or equal to the horizontal and vertical values of the right-hand-side operand respectively. Returns false otherwise.
inherited
operator ==(Object other) → bool: Compares two Offsets for equality.
override
operator >(OffsetBase other) → bool: Greater-than operator. Compares an Offset or Size to another Offset or Size, and returns true if both the horizontal and vertical values of the left-hand-side operand are bigger than the horizontal and vertical values of the right-hand-side operand respectively. Returns false otherwise.
inherited
operator >=(OffsetBase other) → bool: Greater-than-or-equal-to operator. Compares an Offset or Size to another Offset or Size, and returns true if both the horizontal and vertical values of the left-hand-side operand are bigger than or equal to the horizontal and vertical values of the right-hand-side operand respectively. Returns false otherwise.
inherited
operator unary-() → Offset: Unary negation operator.
inherited
operator ~/(double operand) → Offset: Integer (truncating) division operator.
inherited

Static Methods

softCP(OffsetPoint current, {OffsetPoint? previous, OffsetPoint? next, bool reverse = false, double smoothing = 0.65}) → Offset: Calculates a 'soft' control point for a current point based on its previous and next neighbors. This is used to create smooth curves.