ilog.views.maps.projection

Class IlvTransverseMercatorProjection

java.lang.Object

ilog.views.maps.projection.IlvProjection

ilog.views.maps.projection.IlvTransverseMercatorProjection

All Implemented Interfaces:

IlvPersistentObject, Serializable

Direct Known Subclasses:

IlvUniversalTransverseMercatorProjection

public class IlvTransverseMercatorProjection
extends IlvProjection

This class defines the Transverse Mercator projection. This type of projection is generally used for large scale maps of predominantly north-south extent. The Transverse Mercator projection is the projection of a sphere on a cylinder which is tangent to a meridian.

This projection is also known as

• Gauss Conformal
• Gaus-Kruger
• Transverse Cylindrical Orthomorphic.

It implements the forward and inverse functions and is available for spheres and ellipsoids.

The projection is Conformal.

See Also:

IlvUniversalTransverseMercatorProjection, Serialized Form

Field Summary

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

CONFORMAL, EQUAL_AREA, NONE

Constructor Summary

Constructors

Constructor and Description
IlvTransverseMercatorProjection() Creates an instance of the class IlvTransverseMercatorProjection.
IlvTransverseMercatorProjection(IlvInputStream stream) Reads the object from an IlvInputStream.
IlvTransverseMercatorProjection(IlvTransverseMercatorProjection source) Creates a new IlvTransverseMercatorProjection by copying an existing one.

Method Summary

Modifier and Type	Method and Description
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.
double	getScaleFactor() Returns the scale factor applied to the central meridian.
void	setEllipsoid(IlvEllipsoid ellipsoid) Sets the ellipsoid used for the projection.
void	setScaleFactor(double k0) Sets the scale factor applied to the central meridian.
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() Converts the projection to a string with Evenden's format.
void	write(IlvOutputStream stream) Writes the object to an IlvOutputStream.

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, setLLCenter, setUnit, setUsingLongitudeReduction, setXYOffset

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvTransverseMercatorProjection

public IlvTransverseMercatorProjection()

Creates an instance of the class IlvTransverseMercatorProjection.

IlvTransverseMercatorProjection

public IlvTransverseMercatorProjection(IlvInputStream stream)
                                throws IlvReadFileException

Reads the object from an IlvInputStream.

Parameters:

stream - the input stream.

Throws:

IlvReadFileException - if the format is not correct.

Since:

JViews 3.0

IlvTransverseMercatorProjection

public IlvTransverseMercatorProjection(IlvTransverseMercatorProjection source)

Creates a new IlvTransverseMercatorProjection by copying an existing one.

Parameters:

source - the projection that is copied.

Since:

JViews 3.0

Method Detail

copy

public IlvProjection copy()

Copies the projection.

Specified by:

copy in class IlvProjection

Returns:

a copy of the projection.

Since:

JViews 3.0

sForward

protected void sForward(IlvCoordinate ll)
                 throws IlvToleranceConditionException

Implements the projection for a sphere.

Specified by:

sForward in class IlvProjection

Parameters:

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

Throws:

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

eForward

protected void eForward(IlvCoordinate ll)
                 throws IlvToleranceConditionException

Implements the projection for an ellipsoid.

Overrides:

eForward in class IlvProjection

Parameters:

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

Throws:

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

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()

setEllipsoid

public void setEllipsoid(IlvEllipsoid ellipsoid)

Sets the ellipsoid used for the projection. This function also updates the projection parameters for the given ellipsoid.

Overrides:

setEllipsoid in class IlvProjection

Parameters:

ellipsoid - the ellipsoid

See Also:

IlvEllipsoid

setScaleFactor

public void setScaleFactor(double k0)

Sets the scale factor applied to the central meridian. By default, the scale factor is 1.

Parameters:

k0 - the scale factor.

getScaleFactor

public double getScaleFactor()

Returns the scale factor applied to the central meridian.

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.

Since:

JViews 3.0

toString

public String toString()

Converts the projection to a string with Evenden's format.

Overrides:

toString in class Object