DLCoordinateManager class

Constructors

DLCoordinateManager()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

kilometersDistanceFrom({required double lat1, required double long1, required double lat2, required double long2}) → double

两点之间 距离公式 返回: km

radiusAngle(double angle) → double

角度->弧度

sin_quare(double a) → double

sin的平方 the power of sin(x)

Constants

earthRadius → const double

地球 半径