Quadrilateral class

A quadrilateral defined by four vertices in order.

Provides classification checks for common quadrilateral types: parallelogram, rhombus, trapezoid, kite, and rectangle.

Implemented types

Constructors

Quadrilateral(Point a, Point b, Point c, Point d): Creates a quadrilateral from four vertices in order.
const

a → Point: Vertex A.
final
AB → Line: Side from a to b
no setter
area → double: Area of this quadrilateral using the shoelace formula.
no setteroverride
b → Point: Vertex B.
final
BC → Line: Side from b to c
no setter
c → Point: Vertex C.
final
CD → Line: Side from c to d
no setter
center → Point: Center point (average of vertices)
no setter
d → Point: Vertex D.
final
DA → Line: Side from d to a
no setter
diagonalAC → Line: Diagonal from a to c
no setter
diagonalBD → Line: Diagonal from b to d
no setter
hashCode → int: The hash code for this object.
no setteroverride
isConvex → bool: Whether this quadrilateral is convex
no setter
isKite → bool: Whether this is a kite
no setter
isParallelogram → bool: Whether this is a parallelogram
no setter
isRectangle → bool: Whether this is a rectangle
no setter
isRhombus → bool: Whether this is a rhombus
no setter
isSquare → bool: Whether this is a square
no setter
isTrapezoid → bool: Whether this is a trapezoid (trapezium)
no setter
perimeter → double: Perimeter of this quadrilateral (sum of all four side lengths).
no setteroverride
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
sides → List<Line>: The four sides in order
no setter
vertices → List<Point>: The four vertices in order
no setter

contains(Point p) → bool: Check if a point is inside this quadrilateral
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
rotate(double deg) → Quadrilateral: Rotate all vertices by deg degrees around the origin.
override
scale(double value) → Quadrilateral: Scale all vertices by value.
override
toString() → String: A string representation of this object.
override
translate({double x = 0, double y = 0}) → Quadrilateral: Translate all vertices by x horizontally and y vertically.
override