GeodeticMove Method (IGeometryEngine)

In This Topic

Moves each point in the input array by the given distance. The function returns the number of points that has been moved. Points that are outside of the horizon will be discarded.

Syntax

C#
Visual Basic (Declaration)

IReadOnlyList<MapPoint> GeodeticMove( 
   IEnumerable<MapPoint> points,
   SpatialReference spatialReference,
   double distance,
   LinearUnit distanceUnit,
   double azimuth,
   GeodeticCurveType curveType
)

Function GeodeticMove( _
   ByVal points As IEnumerable(Of MapPoint), _
   ByVal spatialReference As SpatialReference, _
   ByVal distance As Double, _
   ByVal distanceUnit As LinearUnit, _
   ByVal azimuth As Double, _
   ByVal curveType As GeodeticCurveType _
) As IReadOnlyList(Of MapPoint)

Parameters

points: The points that are to be moved.
spatialReference: The spatial reference of the points.
distance: The distance by which the points will be moved.
distanceUnit: The unit of the distance property.
azimuth: The azimuth angle in radians of the direction for the points.
curveType: The type of curve to follow when moving the points.

Return Value

The number of points moved. Points outside of the horizon will be discarded.

Exceptions

Exception	Description
System.ArgumentNullException	Points is null or empty. Or spatialReference is null.
System.NotImplementedException	The method is not implemented for GeometryBag.
System.NotImplementedException	The spatial reference is an image coordinate system.

Example

Perform Geodetic Move on a set of MapPoints

SpatialReference sr = SpatialReferences.WebMercator;
var points = new[] { MapPointBuilderEx.CreateMapPoint(0, 0, sr) };
double distance = 10;
double azimuth = Math.PI / 2;
var resultPoints = GeometryEngine.Instance.GeodeticMove(points, sr, distance, LinearUnit.Meters, azimuth, GeodeticCurveType.Geodesic);

// resultPoints.First().X = 10
// resultPoints.First().Y = 0
// resultPoints.First().SpatialReference.Wkid = sr.Wkid

// Change LinearUnit to Miles
resultPoints = GeometryEngine.Instance.GeodeticMove(points, sr, distance, LinearUnit.Miles, azimuth, GeodeticCurveType.Geodesic);
// resultPoints.First().X = 16093.44
// resultPoints.First().Y = 0

// Change curve type
resultPoints = GeometryEngine.Instance.GeodeticMove(points, sr, distance, LinearUnit.Miles, azimuth, GeodeticCurveType.Loxodrome);
// resultPoints.First().X = 16093.44
// resultPoints.First().Y = 0

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

IGeometryEngine Interface
IGeometryEngine Members

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