ilog.views.maps.projection

Class IlvOrthographicProjection

java.lang.Object

ilog.views.maps.projection.IlvProjection

ilog.views.maps.projection.IlvOrthographicProjection

All Implemented Interfaces:

IlvPersistentObject, Serializable

public class IlvOrthographicProjection
extends IlvProjection

This class defines the Orthographic projection. This projection is used to represent the globe as a perspective projection from infinite distance.

This projection applies to spherical ellipsoids only, and implements an inverse function.

This projection is neither equal area nor conformal.

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

Constructors

Constructor and Description
IlvOrthographicProjection() Initializes a new instance of the class IlvOrthographicProjection.
IlvOrthographicProjection(IlvInputStream stream) Reads a new IlvOrthographicProjection from the specified stream.
IlvOrthographicProjection(IlvOrthographicProjection source) Creates a new IlvGnomonicProjection by copying an existing one.

Method Summary

Modifier and Type	Method and Description
IlvProjection	copy() Copies 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() Converts the projection to a string with Evenden's format.
void	write(IlvOutputStream stream) Writes this projection to the specified stream.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvOrthographicProjection

public IlvOrthographicProjection()

Initializes a new instance of the class IlvOrthographicProjection.

IlvOrthographicProjection

public IlvOrthographicProjection(IlvOrthographicProjection source)

Creates a new IlvGnomonicProjection by copying an existing one.

Parameters:

source - The projection that is copied.

IlvOrthographicProjection

public IlvOrthographicProjection(IlvInputStream stream)
                          throws IlvReadFileException

Reads a new IlvOrthographicProjection 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.

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)
                 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.

sInverse

protected void sInverse(IlvCoordinate xy)
                 throws IlvToleranceConditionException

Implements the inverse projection for a sphere.

Overrides:

sInverse in class IlvProjection

Parameters:

xy - The Cartesian coordinates.

Throws:

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

See Also:

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

toString

public String toString()

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

Overrides:

toString in class Object

Since:

JViews 7.5