ProjectionConverter¶
Namespace: ThinkGeo.Core
This class represents a projection that you wish to apply to a FeatureSource.
public class ProjectionConverter
Inheritance Object → ProjectionConverter
Remarks:
This class is abstract and designed to be inherited to create your own projection. The derived projection classes are typically used on a FeatureSource or Layer. It is used to project coordinates from one projection to another and back again. It is important to note that you need to implement the projection both ways.
Properties¶
DecimalDegreeBoundary¶
public RectangleShape DecimalDegreeBoundary { get; set; }
Property Value¶
InternalProjection¶
Gets or sets the Proj4 text parameter for the from projection. This parameter typically look like "+Proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs".
public Projection InternalProjection { get; set; }
Property Value¶
ExternalProjection¶
Gets or sets the Proj4 text parameter for the to projection. This parameter typically look like "+proj=utm +zone=33 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs".
public Projection ExternalProjection { get; set; }
Property Value¶
IsOpen¶
This property gets the state of the projection (whether it is opened or closed).
public bool IsOpen { get; protected set; }
Property Value¶
Remarks:
This method will reflect whether the projection is opened or closed. It is set in the concrete methods Open and Close, so if you inherit from this class and override OpenCore or CloseCore, you will not need to be concerned with setting this property.
CanConvertRasterToExternalProjection¶
public bool CanConvertRasterToExternalProjection { get; protected set; }
Property Value¶
InternalProjectionUnit¶
public GeographyUnit InternalProjectionUnit { get; }
Property Value¶
Constructors¶
ProjectionConverter()¶
This is the default constructor for this class.
public ProjectionConverter()
Remarks:
This conctructor pass nothing. After this cconstructor , you should set the InternalProjectionParametersString property and ExternalProjectionParametersString property before open to use.
ProjectionConverter(String, String)¶
public ProjectionConverter(string internalProjString, string externalProjString)
Parameters¶
internalProjString String
externalProjString String
ProjectionConverter(Int32, Int32)¶
public ProjectionConverter(int internalSrid, int externalSrid)
Parameters¶
internalSrid Int32
externalSrid Int32
ProjectionConverter(String, Int32)¶
public ProjectionConverter(string internalProjString, int externalSrid)
Parameters¶
internalProjString String
externalSrid Int32
ProjectionConverter(Int32, String)¶
public ProjectionConverter(int internalSridString, string externalProjString)
Parameters¶
internalSridString Int32
externalProjString String
ProjectionConverter(Projection, Projection)¶
This is a constructor for the class.
public ProjectionConverter(Projection internalProjection, Projection externalProjection)
Parameters¶
internalProjection Projection
This parameter is the projection parameters describing the data.
externalProjection Projection
This parameter is the projection parameters describing the projection you want to
go to.
Remarks:
This constructor allows you to pass in Proj4 text parameters for the to and from projection. The parameters typically look like "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs" You should use this constructor when you know the parameters. If you know the SRID directly you can use the other constructor that takes the SRID.
Methods¶
Open()¶
This method opens the projection and gets it ready to use.
public void Open()
Remarks:
This method opens the projection and gets it ready to use.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
ConvertToExternalProjection(GeoImage, RectangleShape, RectangleShape, Int32, Int32)¶
public RasterProjectionResult ConvertToExternalProjection(GeoImage image, RectangleShape imageExtent, RectangleShape targetExtent, int width, int height)
Parameters¶
image GeoImage
imageExtent RectangleShape
targetExtent RectangleShape
width Int32
height Int32
Returns¶
ConvertToExternalProjection(GeoImage, RectangleShape)¶
public RasterProjectionResult ConvertToExternalProjection(GeoImage image, RectangleShape imageExtent)
Parameters¶
image GeoImage
imageExtent RectangleShape
Returns¶
ConvertToExternalProjection(GeoImage, RectangleShape, RectangleShape)¶
public RasterProjectionResult ConvertToExternalProjection(GeoImage image, RectangleShape imageExtent, RectangleShape targetExtent)
Parameters¶
image GeoImage
imageExtent RectangleShape
targetExtent RectangleShape
Returns¶
ConvertToExternalProjectionCore(GeoImage, RectangleShape, RectangleShape, Int32, Int32)¶
protected RasterProjectionResult ConvertToExternalProjectionCore(GeoImage image, RectangleShape imageExtent, RectangleShape targetExtent, int width, int height)
Parameters¶
image GeoImage
imageExtent RectangleShape
targetExtent RectangleShape
width Int32
height Int32
Returns¶
OpenCore()¶
This method opens the projection and gets it ready to use.
protected void OpenCore()
Remarks:
As this is the core version of the Open method, it is intended to be overridden in an inherited version of the class. When overriding, you will be responsible for getting the projection classes' state ready for doing projections.
Close()¶
This method closes the projection and gets it ready for serialization if necessary.
public void Close()
Remarks:
This method closes the projection and gets it ready for serialization if necessary.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
CloseCore()¶
This method closes the projection and gets it ready for serialization if necessary.
protected void CloseCore()
Remarks:
As this is the core version of the Close method, it is intended to be overridden in an inherited version of the class. When overriding, you will be responsible freeing any state you have maintained and getting the class ready for serialization if necessary. Note that the object may be opened again, so you want to make sure you can open and close the object multiple times without any ill effects.
ConvertToExternalProjection(Double, Double)¶
This method returns a projected vertex based on the coordinates passed in.
public Vertex ConvertToExternalProjection(double x, double y)
Parameters¶
x Double
This parameter is the X decimalDegreesValue of the point that will be projected.
y Double
This parameter is the Y decimalDegreesValue of the point that will be projected.
Returns¶
Vertex
This method returns a projected vertex based on the coordinates passed in.
Remarks:
This method returns a projected vertex based on the coordinates passed in.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
ConvertToExternalProjection(BaseShape)¶
This method returns a projected BaseShape based on the baseShape passed in.
public BaseShape ConvertToExternalProjection(BaseShape baseShape)
Parameters¶
baseShape BaseShape
This parameter is the baseShape (in decimalDegreesValue) to be projected.
Returns¶
BaseShape
This method returns a projected baseShape for the passed-in BaseShape.
Remarks:
This method returns a projected baseShape based on the BaseShape passed in.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
ConvertToExternalProjection(Feature)¶
This method returns a projected Feature based on the Feature passed in.
public Feature ConvertToExternalProjection(Feature feature)
Parameters¶
feature Feature
This parameter is the Feature that contains a BaseShape in decimalDegreesValue
to be projected.
Returns¶
Feature
This method returns a projected Feature for the passed-in Feature.
Remarks:
This method returns a projected Feature based on the Feature passed in.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
ConvertToExternalProjection(IEnumerable<Feature>)¶
public Collection<Feature> ConvertToExternalProjection(IEnumerable<Feature> features)
Parameters¶
features IEnumerable<Feature>
Returns¶
UpdateToExternalProjection(Feature)¶
internal void UpdateToExternalProjection(Feature feature)
Parameters¶
feature Feature
ConvertToExternalProjection(RectangleShape)¶
This method returns a projected rectangle based on the rectangle passed in.
public RectangleShape ConvertToExternalProjection(RectangleShape rectangleShape)
Parameters¶
rectangleShape RectangleShape
This parameter represents the rectangle you want to project.
Returns¶
RectangleShape
This method returns a projected rectangle based on the rectangle passed in.
Remarks:
This method returns a projected rectangle based on the rectangle passed in.
ConvertToExternalProjectionCore(IEnumerable<Vertex>)¶
This method returns projected vertices based on the coordinates passed in.
protected Collection<Vertex> ConvertToExternalProjectionCore(IEnumerable<Vertex> verticies)
Parameters¶
verticies IEnumerable<Vertex>
Returns¶
This method returns projected vertices based on the coordinates passed
in.
Remarks:
This method returns a projected vertex based on the coordinates passed in. You will need to override this method for the Projection class. Typically, you can call the projection utility library that has interfaces for dozens of different types of projections.
ConvertToExternalProjection(IEnumerable<Vertex>)¶
This method returns projected vertices based on the coordinates passed in.
public Collection<Vertex> ConvertToExternalProjection(IEnumerable<Vertex> vertices)
Parameters¶
vertices IEnumerable<Vertex>
This parameter is the vertices that will be projected.
Returns¶
This method returns projected vertices based on the coordinates passed
in.
Remarks:
This method returns a projected vertex based on the coordinates passed in. You will need to override this method for the Projection class. Typically, you can call the projection utility library that has interfaces for dozens of different types of projections.
ConvertToInternalProjection(Double, Double)¶
This method returns a de-projected vertex based on the coordinates passed in.
public Vertex ConvertToInternalProjection(double x, double y)
Parameters¶
x Double
This parameter is the X decimalDegreesValue of the point that will be de-projected.
y Double
This parameter is the Y decimalDegreesValue of the point that will be de-projected.
Returns¶
This method returns a de-projected vertex based on the coordinates passed
in.
Remarks:
This method returns a de-projected vertex based on the coordinates passed in.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
ConvertToInternalProjection(BaseShape)¶
This method returns a de-projected BaseShape based on the BaseShape passed in.
public BaseShape ConvertToInternalProjection(BaseShape baseShape)
Parameters¶
baseShape BaseShape
This parameter is the baseShape (in decimalDegreesValue) to be de-projected.
Returns¶
BaseShape
This method returns a de-projected BaseShape for the passed in BaseShape.
Remarks:
This method returns a de-projected BaseShape based on the BaseShape passed in.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
ConvertToInternalProjection(Feature)¶
This method returns a de-projected Feature based on the Feature passed in.
public Feature ConvertToInternalProjection(Feature feature)
Parameters¶
feature Feature
This parameter is the Feature that contains a BaseShape in decimalDegreesValue
to be de-projected.
Returns¶
Feature
This method returns a de-projected Feature for the passed-in Feature.
Remarks:
This method returns a de-projected Feature based on the Feature passed in.
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
ConvertToInternalProjection(IEnumerable<Vertex>)¶
This method returns de-projected vertices based on the coordinates passed in.
public Collection<Vertex> ConvertToInternalProjection(IEnumerable<Vertex> vertices)
Parameters¶
vertices IEnumerable<Vertex>
This parameter is the vertices that will be de-projected.
Returns¶
This method returns de-projected vertices based on the coordinates passed
in.
Remarks:
This method returns a de-projected vertex based on the coordinates passed in. The de-projection is important because, inside of the FeatureSource, you will in many cases go to and from various projections.
ConvertToInternalProjection(RectangleShape)¶
This method returns a de-projected rectangle based on the rectangle passed in.
public RectangleShape ConvertToInternalProjection(RectangleShape rectangleShape)
Parameters¶
rectangleShape RectangleShape
This parameter represents the rectangle you want to de-project.
Returns¶
This method returns a de-projected rectangle based on the rectangle passed
in.
Remarks:
This method returns a de-projected rectangle based on the rectangle passed in.
ConvertToInternalProjectionCore(IEnumerable<Vertex>)¶
This method returns de-projected vertices based on the coordinates passed in.
protected Collection<Vertex> ConvertToInternalProjectionCore(IEnumerable<Vertex> verticies)
Parameters¶
verticies IEnumerable<Vertex>
Returns¶
This method returns de-projected vertices based on the coordinates passed
in.
Remarks:
This method returns a de-projected vertex based on the coordinates passed in. You will need to override this method for the Projection class. Typically, you can call the projection utility library that has interfaces for dozens of different types of projections. The de-projection is important because, inside of the FeatureSource, you will in many cases go to and from various projections.
UpdateToInternalProjection(Feature)¶
internal void UpdateToInternalProjection(Feature feature)
Parameters¶
feature Feature