Geodesy class

Geodesy class that acts as a wrapper for various geodetic calculations. This class provides a wide range of geo-spatial functionalities, from calculating distances and bearings to working with polygons, points, and lines. This can be a valuable utility for geo-spatial applications

Constructors

Geodesy()

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

bearingBetweenTwoGeoPoints(LatLng l1, LatLng l2) → num

Calculate the initial bearing from point l1 to point l2.

calculateBoundingBox(LatLng centerPoint, num distanceInKm) → List<LatLng>

Calculate a bounding box around a center point with a specified distance in kilometers.

calculateDestinationPoint(LatLng initialPoint, double bearingDegrees, double distanceKm) → LatLng

Calculate a destination point given an initial point, bearing in degrees, and distance in kilometers.

calculateGeodesicLineIntersection(LatLng start1, LatLng end1, LatLng start2, LatLng end2) → LatLng?

Calculate the intersection points of two geodesic lines defined by start and end points.

calculateMidpoint(LatLng point1, LatLng point2) → LatLng

Calculate the midpoint between two geographic points.

calculatePointsAlongGreatCircle(LatLng startPoint, LatLng endPoint, int numPoints) → List<LatLng>

Calculate a list of points along a great circle arc connecting two points.

calculatePolygonArea(List<LatLng> polygonPoints) → double

Calculate the area of a polygon defined by a list of polygonPoints points.

calculatePolygonWithHolesArea(List<LatLng> outerPolygon, List<List<LatLng>> holes) → double

Calculate the area of a polygon with holes.

calculatePolyLineLength(List<LatLng> polyLinePoints) → double

Calculate the length of a polyline formed by connecting multiple points.

crossTrackDistanceTo(LatLng l1, LatLng start, LatLng end, [num? radius]) → num

Calculate the signed distance from a geographic point l1 to create a circle with start start and end end points.

destinationPointByDistanceAndBearing(LatLng l, num distance, num bearing, [num? radius]) → LatLng

Calculate a destination point given the starting point, distance, bearing, and optional radius.

distanceBetweenTwoGeoPoints(LatLng l1, LatLng l2, [num? radius]) → num

Calculate the distance in meters between two geographic points.

equirectangularDistance(LatLng point1, LatLng point2) → double

Calculate the equirectangular approximation distance between two geographic points.

finalBearingBetweenTwoGeoPoints(LatLng l1, LatLng l2) → num

Calculate the final bearing from point l1 to point l2.

findPolygonCentroid(List<LatLng> polygons) → LatLng

Find the centroid of a polygon defined by a list of polygons points.

getPolygonIntersection(List<LatLng> polygon1, List<LatLng> polygon2) → List<LatLng>

Calculate the intersection points of two polygons represented by lists of polygon1 and polygon2 points.

getRectangleBounds(List<LatLng> polygonCoords) → List<LatLng>

Calculate the bounds of a rectangle that encloses a polygon defined by a list of polygonCoords points.

greatCircleDistanceBetweenTwoGeoPoints(num lat1, num lon1, num lat2, num lon2) → num

Calculate the great-circle distance between two geographic points using the Haversine formula.

intersectionByPaths(LatLng l1, LatLng l2, num b1, num b2) → LatLng?

Calculate the geographic point of intersection of two paths.

isGeoPointInBoundingBox(LatLng l, LatLng topLeft, LatLng bottomRight) → bool

Check if a given geographic point l is within a bounding box defined by the top-left and bottom-right corners.

isGeoPointInPolygon(LatLng l, List<LatLng> polygon) → bool

Check if a given geographic point l is within a polygon defined by a list of polygon points using the even-odd rule algorithm.

midPointBetweenTwoGeoPoints(LatLng l1, LatLng l2) → LatLng

Calculate the midpoint between two geographic points.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

pointsInRange(LatLng point, List<LatLng> pointsToCheck, num distance) → List<LatLng>

Get a list of LatLng points within a specified distance from a given point.

projectPointOntoGeodesicLine(LatLng point, LatLng start, LatLng end) → LatLng

Project a point onto a geodesic line.

sphericalLawOfCosinesDistance(LatLng point1, LatLng point2) → double

Calculate the Spherical Law of Cosines distance between two geographic points.

toString() → String

A string representation of this object.

inherited

vincentyDistance(double lat1, double lon1, double lat2, double lon2) → double

Calculate the Vincenty formula for geodesic distance calculation between two geographic points.

Operators

operator ==(Object other) → bool

The equality operator.

inherited