org.cts.op

Class Identity

java.lang.Object

org.cts.IdentifiableComponent

org.cts.op.AbstractCoordinateOperation

org.cts.op.Identity

All Implemented Interfaces:

Identifiable, CoordinateOperation, GeocentricTransformation, ParamBasedTransformation

public class Identity
extends AbstractCoordinateOperation
implements ParamBasedTransformation, GeocentricTransformation

The identity transformation.

This transformation doesn't do anything.

Author:

Michaël Michaud

Field Summary

Fields

Modifier and Type	Field and Description
static Identity	IDENTITY The identity transformation.

Fields inherited from class org.cts.op.AbstractCoordinateOperation

precision

Fields inherited from interface org.cts.Identifiable

DEFAULT, LOCAL, UNKNOWN

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) Returns true if o is also an Identity CoordinateOperation.
int	hashCode() Returns 0 for all identity operations.
GeocentricTransformation	inverse() Creates the inverse CoordinateOperation.
boolean	isIdentity()
double[]	transform(double[] coord) Apply the identity transformation to input coordinates.

Methods inherited from class org.cts.op.AbstractCoordinateOperation

getPrecision

Methods inherited from class org.cts.IdentifiableComponent

addAlias, addRemark, getAliases, getAuthorityKey, getAuthorityName, getCode, getComponent, getIdentifier, getName, getRemarks, getShortName, setIdentifier, setRemarks, setShortName, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cts.op.CoordinateOperation

getPrecision

Methods inherited from interface org.cts.Identifiable

addAlias, addRemark, getAliases, getAuthorityKey, getAuthorityName, getCode, getName, getRemarks, getShortName, setRemarks, setShortName

Field Detail

IDENTITY

public static final Identity IDENTITY

The identity transformation. When used to transform coordinates, it returns the input coordinates.

Method Detail

transform

public double[] transform(double[] coord)
                   throws IllegalCoordinateException

Apply the identity transformation to input coordinates.

Specified by:

transform in interface CoordinateOperation

Specified by:

transform in class AbstractCoordinateOperation

Parameters:

coord - is an array containing one, two or three ordinates

Returns:

a double array containing the output coordinate

Throws:

IllegalCoordinateException

inverse

public GeocentricTransformation inverse()
                                 throws NonInvertibleOperationException

Creates the inverse CoordinateOperation.

Specified by:

inverse in interface CoordinateOperation

Specified by:

inverse in interface GeocentricTransformation

Overrides:

inverse in class AbstractCoordinateOperation

Throws:

NonInvertibleOperationException

equals

public boolean equals(Object o)

Returns true if o is also an Identity CoordinateOperation.

Overrides:

equals in class IdentifiableComponent

Parameters:

o - The object to compare this ProjectedCRS against

hashCode

public int hashCode()

Returns 0 for all identity operations.

Overrides:

hashCode in class IdentifiableComponent

isIdentity

public boolean isIdentity()

Specified by:

isIdentity in interface CoordinateOperation

Overrides:

isIdentity in class AbstractCoordinateOperation

Returns:

true if this operation does not change coordinates.