ilog.views.maps.defense.format.asrp

Class IlvRasterASRPReader.ASRPProjection

java.lang.Object

ilog.views.maps.projection.IlvProjection

ilog.views.maps.defense.format.asrp.IlvRasterASRPReader.ASRPProjection

All Implemented Interfaces:

IlvPersistentObject, Serializable

Enclosing class:

IlvRasterASRPReader

public static class IlvRasterASRPReader.ASRPProjection
extends IlvProjection

Projection encapsulating an IlvARCProjectionFactory.IlvAbstractARCProjection to ensure that in the non-polar regions longitude coordinates smaller than the longitude origin will have a negative projected value. This is mandatory because the ASRP format does not plan to have coordinates outside of the bounds of the map.

Since:

JViews 7.0

See Also:

Serialized Form

Field Summary

Fields inherited from class ilog.views.maps.projection.IlvProjection

CONFORMAL, EQUAL_AREA, NONE

Constructor Summary

Constructors

Constructor and Description
ASRPProjection(IlvAbstractARCProjection projection) Constructor initializing the internal projection parameter used for projection computation.
ASRPProjection(IlvInputStream stream) Stream constructor.

Method Summary

Modifier and Type	Method and Description
IlvProjection	copy() Copies the object.
void	forward(IlvCoordinate ll) Converts the parameter IlvCoordinate representing a latitude and a longitude to Cartesian coordinates (x,y).
void	inverse(IlvCoordinate ll) Converts the parameter IlvCoordinate representing Cartesian coordinates to a latitude and a longitude.
protected void	sForward(IlvCoordinate ll) Implements the projection for a sphere.
String	toString() Returns a string representation of the object.
void	write(IlvOutputStream stream) Writes the object to an IlvOutputStream.

Methods inherited from class ilog.views.maps.projection.IlvProjection

addDescription, adjustLongitude, eForward, eInverse, equals, forward, getCentralMeridian, getCentralParallel, getDatum, getEllipsoid, getFalseEasting, getFalseNorthing, GetProjection, getProperty, getUnit, getXYOffset, inverse, inverse, isEllipsoidEnabled, isGeocentric, isInverseEnabled, isUsingLongitudeReduction, setCentralMeridian, setCentralParallel, setDatum, setEllipsoid, setFalseEasting, setFalseNorthing, setGeocentric, setLLCenter, setUnit, setUsingLongitudeReduction, setXYOffset, sInverse

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ASRPProjection

public ASRPProjection(IlvAbstractARCProjection projection)

Constructor initializing the internal projection parameter used for projection computation.

Parameters:

projection - The internal projection to use.

ASRPProjection

public ASRPProjection(IlvInputStream stream)
               throws IlvReadFileException

Stream constructor.

Parameters:

stream -

Throws:

IlvReadFileException

Method Detail

copy

public IlvProjection copy()

Copies the object.

Specified by:

copy in class IlvProjection

Returns:

A copy of the object. This method copies the object by calling a constructor defined like this: public <CLASSNAME>(<CLASSNAME> source).

See Also:

IlvProjection.copy()

forward

public void forward(IlvCoordinate ll)

Converts the parameter IlvCoordinate representing a latitude and a longitude to Cartesian coordinates (x,y). The longitude must be in the range [-PI ; PI]. The latitude must be in the range [-PI/2; PI/2]. If required, the function converts the latitude to a geocentric latitude. Then it centers the longitude and adjusts it. The forward projection is computed either by the sForward or the eForward methods depending on whether the ellipsoid is a sphere or not. The implementation of this method varies depending on the projection. Its result is then converted to the appropriate measurement unit.

Overrides:

forward in class IlvProjection

Parameters:

ll - The longitude/latitude coordinates in radians (x = longitude, y = latitude).

See Also:

IlvProjection.forward(ilog.views.maps.IlvCoordinate)

inverse

public void inverse(IlvCoordinate ll)

Converts the parameter IlvCoordinate representing Cartesian coordinates to a latitude and a longitude. The x and y values are expressed in the measurement unit set for the projection (generally meters) unless another unit converter was set using the setUnit method. The longitude/latitude coordinates are in radians.

Overrides:

inverse in class IlvProjection

Parameters:

ll - The Cartesian coordinates in the measurement unit of the projection.

See Also:

IlvProjection.inverse(ilog.views.maps.IlvCoordinate)

sForward

protected void sForward(IlvCoordinate ll)
                 throws IlvToleranceConditionException

Implements the projection for a sphere.

This protected method should be implemented by the classes that extend the class IlvProjection. It is not called directly by the user, but by the IlvProjection.forward method if the ellipsoid associated with the projection is a sphere.

The method should convert the ll parameter to the projected coordinates. The various parameters associated with a projection, such as the measurement unit, the false easting or the central meridian, must not be taken into account in this method because they are processed by the calling method IlvProjection.forward. In this method, the sphere is assumed to be of radius 1.

Specified by:

sForward in class IlvProjection

Parameters:

ll - Longitude/latitude coordinates in radians.

Throws:

IlvToleranceConditionException - If the values are not within the tolerated limits.

See Also:

IlvProjection.sForward(ilog.views.maps.IlvCoordinate)

write

public void write(IlvOutputStream stream)
           throws IOException

Writes the object to an IlvOutputStream.

Specified by:

write in interface IlvPersistentObject

Overrides:

write in class IlvProjection

Parameters:

stream - The output stream.

Throws:

IOException - thrown when an exception occurs during the write operation for this object.

See Also:

IlvProjection.write(ilog.views.io.IlvOutputStream)

toString

public String toString()

Returns a string representation of the object.

Overrides:

toString in class Object

See Also:

Object.toString()