private void Initialize()
{
// Create a point geometry in NYC in WGS84
MapPoint startingPoint = new MapPoint(-73.984513, 40.748469, SpatialReferences.Wgs84);
// Update the UI with the initial coordinates
beforeLabel.Text = $"x: {startingPoint.X}, y: {startingPoint.Y}";
// Create a geographic transformation step for transform WKID 108055, WGS_1984_To_MSK_1942
GeographicTransformationStep geoStep = new GeographicTransformationStep(108055);
// Create the transformation
GeographicTransformation geoTransform = new GeographicTransformation(geoStep);
// Project to a coordinate system used in New York, NAD_1983_HARN_StatePlane_New_York_Central_FIPS_3102
MapPoint afterPoint = (MapPoint)GeometryEngine.Project(startingPoint, SpatialReference.Create(2829), geoTransform);
// Update the UI with the projected coordinates
afterLabel.Text = $"x: {afterPoint.X}, y: {afterPoint.Y}";
// Perform the same projection without specified transformation
MapPoint unspecifiedTransformPoint = (MapPoint)GeometryEngine.Project(startingPoint, SpatialReference.Create(2829));
// Update the UI with the projection done without specific transform for comparison purposes
nonSpecificLabel.Text = $"x: {unspecifiedTransformPoint.X}, y: {unspecifiedTransformPoint.Y}";
}
private static Geometry Project(this Geometry geometry, SpatialReference spatialReference)
{
if (geometry != null && geometry.IsEmpty && geometry.SpatialReference != null)
{
return(null);
}
// Create a geographic transformation step for transform WKID 108055, WGS_1984_To_MSK_1942
GeographicTransformationStep geoStep = new GeographicTransformationStep(spatialReference.Wkid);
//// Create the transformation
//GeographicTransformation geoTransform = new GeographicTransformation(geoStep);
// Project to a coordinate system
return(GeometryEngine.Project(geometry, spatialReference));
}
