ilog.views.maps.projection
Class IlvCassiniProjection

java.lang.Object
  ilog.views.maps.projection.IlvProjection
      ilog.views.maps.projection.IlvCassiniProjection

All Implemented Interfaces:

IlvPersistentObject, Serializable

public class IlvCassiniProjection
extends IlvProjection

This class defines the Cassini projection. This projection is a cylindrical projection where central meridian, meridians 90 degree from central meridian and Equator are straight lines.

This projection applies both to spherical and non-spherical ellipsoids and implements an inverse function.

This projection is neither conformal nor equal area.

Since:

JViews 3.5

See Also:

Serialized Form

Field Summary

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

CONFORMAL, EQUAL_AREA, NONE

Constructor Summary

IlvCassiniProjection()
Initializes a new instance of the class IlvCassiniProjection.

IlvCassiniProjection(IlvCassiniProjection source)
Creates a new IlvCassiniProjection by copying an existing one.

IlvCassiniProjection(IlvInputStream stream)
Reads a new IlvCassiniProjection from the specified stream.

Method Summary

IlvProjection	copy() Copies the projection.
protected void	eForward(IlvCoordinate ll) Implements the projection for an ellipsoid.
protected void	eInverse(IlvCoordinate xy) Implements the inverse projection for an ellipsoid.
void	setEllipsoid(IlvEllipsoid ellipsoid) Sets the ellipsoid used for the projection.
void	setLLCenter(double lon, double lat) Specifies the central meridian and the central parallel associated with the projection.
protected void	sForward(IlvCoordinate ll) Implements the projection for a sphere.
protected void	sInverse(IlvCoordinate xy) Implements the inverse projection for a sphere.
String	toString() Returns a string representation of this projection.
void	write(IlvOutputStream stream) Writes this projection to the specified stream.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvCassiniProjection

public IlvCassiniProjection()

Initializes a new instance of the class IlvCassiniProjection.

IlvCassiniProjection

public IlvCassiniProjection(IlvCassiniProjection source)

Creates a new IlvCassiniProjection by copying an existing one.

Parameters:

source - The projection that is copied.

IlvCassiniProjection

public IlvCassiniProjection(IlvInputStream stream)
                     throws IlvReadFileException

Reads a new IlvCassiniProjection from the specified stream.

Throws:

IlvReadFileException

Since:

JViews 5.0

Method Detail

write

public void write(IlvOutputStream stream)
           throws IOException

Writes this projection to the specified stream.

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.

Since:

JViews 5.0

copy

public IlvProjection copy()

Copies the projection.

Specified by:

copy in class IlvProjection

Returns:

A copy of the projection.

toString

public String toString()

Returns a string representation of this projection.

Overrides:

toString in class Object

Since:

JViews 5.0

setEllipsoid

public void setEllipsoid(IlvEllipsoid ellipsoid)

Sets the ellipsoid used for the projection.

Overrides:

setEllipsoid in class IlvProjection

Parameters:

ellipsoid - The ellipsoid.

See Also:

IlvEllipsoid

setLLCenter

public void setLLCenter(double lon,
                        double lat)

Specifies the central meridian and the central parallel associated with the projection. By default, the central parallel and the central meridian are set to 0.

Overrides:

setLLCenter in class IlvProjection

Parameters:

lon - The central meridian in radians.

lat - The central parallel in radians.

See Also:

IlvProjectionUtil.DegreeToRadian(double), IlvProjectionUtil.DMSToRadian(java.lang.String)

sForward

protected void sForward(IlvCoordinate ll)

Implements the projection for a sphere.

Specified by:

sForward in class IlvProjection

Parameters:

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

eForward

protected void eForward(IlvCoordinate ll)

Implements the projection for an ellipsoid.

Overrides:

eForward in class IlvProjection

Parameters:

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

sInverse

protected void sInverse(IlvCoordinate xy)

Implements the inverse projection for a sphere.

Overrides:

sInverse in class IlvProjection

Parameters:

xy - The Cartesian coordinates.

See Also:

IlvProjection.inverse(ilog.views.IlvPoint), IlvProjection.isInverseEnabled()

eInverse

protected void eInverse(IlvCoordinate xy)
                 throws IlvToleranceConditionException

Implements the inverse projection for an ellipsoid.

Overrides:

eInverse in class IlvProjection

Parameters:

xy - The Cartesian coordinates.

Throws:

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

See Also:

IlvProjection.inverse(ilog.views.IlvPoint), IlvProjection.isEllipsoidEnabled(), IlvProjection.isInverseEnabled()