C# Class SharpMap.CoordinateSystems.Transformations.GeographicTransform

The GeographicTransform class is implemented on geographic transformation objects and implements datum transformations between geographic coordinate systems.

Inheritance: MathTransform

ファイルを表示 Open project: jumpinjackie/fdotoolbox

Public Methods

Method	Description
Inverse ( ) : IMathTransform	Creates the inverse transform of this object. This method may fail if the transform is not one to one. However, all cartographic projections should succeed.
Invert ( ) : void	Reverses the transformation
Transform ( SharpMap point ) : SharpMap.Geometries.Point	Transforms a coordinate point. The passed parameter point should not be modified.
TransformList ( List points ) : List	Transforms a list of coordinate point ordinal values. This method is provided for efficiently transforming many points. The supplied array of ordinal values will contain packed ordinal values. For example, if the source dimension is 3, then the ordinals will be packed in this order (x0,y0,z0,x1,y1,z1 ...). The size of the passed array must be an integer multiple of DimSource. The returned ordinal values are packed in a similar way. In some DCPs. the ordinals may be transformed in-place, and the returned array may be the same as the passed array. So any client code should not attempt to reuse the passed ordinal values (although they can certainly reuse the passed array). If there is any problem then the server implementation will throw an exception. If this happens then the client should not make any assumptions about the state of the ordinal values.

Private Methods

Method	Description
GeographicTransform ( IGeographicCoordinateSystem sourceGCS, IGeographicCoordinateSystem targetGCS ) : System

Method Details

Inverse() public method

Creates the inverse transform of this object.

This method may fail if the transform is not one to one. However, all cartographic projections should succeed.

public Inverse ( ) : IMathTransform
return	IMathTransform

Invert() public method

Reverses the transformation

public Invert ( ) : void
return	void

Transform() public method

Transforms a coordinate point. The passed parameter point should not be modified.

public Transform ( SharpMap point ) : SharpMap.Geometries.Point
point	SharpMap
return	SharpMap.Geometries.Point

TransformList() public method

Transforms a list of coordinate point ordinal values.

This method is provided for efficiently transforming many points. The supplied array of ordinal values will contain packed ordinal values. For example, if the source dimension is 3, then the ordinals will be packed in this order (x0,y0,z0,x1,y1,z1 ...). The size of the passed array must be an integer multiple of DimSource. The returned ordinal values are packed in a similar way. In some DCPs. the ordinals may be transformed in-place, and the returned array may be the same as the passed array. So any client code should not attempt to reuse the passed ordinal values (although they can certainly reuse the passed array). If there is any problem then the server implementation will throw an exception. If this happens then the client should not make any assumptions about the state of the ordinal values.

public TransformList ( List points ) : List
points	List
return	List