Package org.geotools.referencing.crs

Class DefaultEngineeringCRS

Object

Formattable

AbstractIdentifiedObject

AbstractReferenceSystem

AbstractCRS

AbstractSingleCRS

DefaultEngineeringCRS

All Implemented Interfaces:

Serializable, CoordinateReferenceSystem, EngineeringCRS, SingleCRS, IdentifiedObject, ReferenceSystem

public class DefaultEngineeringCRS
extends AbstractSingleCRS
implements EngineeringCRS

A contextually local coordinate reference system. It can be divided into two broad categories:

• earth-fixed systems applied to engineering activities on or near the surface of the earth;
• CRSs on moving platforms such as road vehicles, vessels, aircraft, or spacecraft.

Used with CS type(s)
Cartesian, Affine, Ellipsoidal, Spherical, Cylindrical, Polar, Vertical, Linear

Since:

2.1

Author:

Martin Desruisseaux (IRD)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final DefaultEngineeringCRS	CARTESIAN_2D	A two-dimensional cartesian coordinate reference system with x, y axis in metres.
static final DefaultEngineeringCRS	CARTESIAN_3D	A three-dimensional cartesian coordinate reference system with x, y, z axis in metres.
static final DefaultEngineeringCRS	GENERIC_2D	A two-dimensional wildcard coordinate system with x, y axis in metres.
static final DefaultEngineeringCRS	GENERIC_3D	A three-dimensional wildcard coordinate system with x, y, z axis in metres.
protected boolean	wildcard	Marks the CRS as a wildcard one.

Fields inherited from class AbstractSingleCRS

datum

Fields inherited from class AbstractCRS

coordinateSystem

Fields inherited from class AbstractIdentifiedObject

EMPTY_ALIAS_ARRAY, EMPTY_IDENTIFIER_ARRAY, IDENTIFIER_COMPARATOR, NAME_COMPARATOR, REMARKS_COMPARATOR

Fields inherited from class Formattable

SINGLE_LINE

Fields inherited from interface IdentifiedObject

ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Fields inherited from interface ReferenceSystem

DOMAIN_OF_VALIDITY_KEY, SCOPE_KEY

Constructor Summary

Constructors

Constructor	Description
DefaultEngineeringCRS(String name, EngineeringDatum datum, CoordinateSystem cs)	Constructs an engineering CRS from a name.
DefaultEngineeringCRS(Map<String,?> properties, EngineeringDatum datum, CoordinateSystem cs)	Constructs an engineering CRS from a set of properties.
DefaultEngineeringCRS(Map<String,?> properties, EngineeringDatum datum, CoordinateSystem cs, boolean wildcard)	Constructs an engineering CRS from a set of properties.
DefaultEngineeringCRS(EngineeringCRS crs)	Constructs a new enginnering CRS with the same values than the specified one.

Method Summary

Modifier and Type	Method	Description
int	calculateHashCode()	Returns a hash value for this derived CRS.
boolean	equals(AbstractIdentifiedObject object, boolean compareMetadata)	Compares the specified object to this CRS for equality.
protected String	formatWKT(Formatter formatter)	Format the inner part of a Well Known Text (WKT) element.
EngineeringDatum	getDatum()	Returns the datum.
boolean	isWildcard()	Returns true if this is a wildcard CRS, that is, one that will transform from and to any other CRS using the identity transformation

Methods inherited from class AbstractSingleCRS

getAxis, getDimension

Methods inherited from class AbstractCRS

distance, getCoordinateSystem, hashCode

Methods inherited from class AbstractReferenceSystem

getDomainOfValidity, getScope

Methods inherited from class AbstractIdentifiedObject

asSet, ensureAngularUnit, ensureLinearUnit, ensureNonNull, ensureNonNull, ensureTimeUnit, equals, equals, equals, equals, getAlias, getIdentifier, getIdentifier, getIdentifiers, getName, getName, getName, getProperties, getProperties, getRemarks, nameMatches, nameMatches, nameMatches

Methods inherited from class Formattable

cleanupThreadLocals, toString, toWKT, toWKT, toWKT, toWKT

Methods inherited from class Object

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

Methods inherited from interface IdentifiedObject

getAlias, getIdentifiers, getName, getRemarks, toWKT

Methods inherited from interface ReferenceSystem

getDomainOfValidity, getScope

Methods inherited from interface SingleCRS

getCoordinateSystem

Field Details

wildcard

protected boolean wildcard

Marks the CRS as a wildcard one. Wildcard CRS will transform to any other CRS with the identity transform

CARTESIAN_2D

public static final DefaultEngineeringCRS CARTESIAN_2D

A two-dimensional cartesian coordinate reference system with x, y axis in metres. By default, this CRS has no transformation path to any other CRS (i.e. a map using this CS can't be reprojected to a geographic coordinate reference system for example).

CARTESIAN_3D

public static final DefaultEngineeringCRS CARTESIAN_3D

A three-dimensional cartesian coordinate reference system with x, y, z axis in metres. By default, this CRS has no transformation path to any other CRS (i.e. a map using this CS can't be reprojected to a geographic coordinate reference system for example).

GENERIC_2D

public static final DefaultEngineeringCRS GENERIC_2D

A two-dimensional wildcard coordinate system with x, y axis in metres. At the difference of CARTESIAN_2D, this coordinate system is treated specially by the default coordinate operation factory with loose transformation rules: if no transformation path were found (for example through a derived CRS), then the transformation from this CRS to any CRS with a compatible number of dimensions is assumed to be the identity transform. This CRS is usefull as a kind of wildcard when no CRS were explicitly specified.

GENERIC_3D

public static final DefaultEngineeringCRS GENERIC_3D

A three-dimensional wildcard coordinate system with x, y, z axis in metres. At the difference of CARTESIAN_3D, this coordinate system is treated specially by the default coordinate operation factory with loose transformation rules: if no transformation path were found (for example through a derived CRS), then the transformation from this CRS to any CRS with a compatible number of dimensions is assumed to be the identity transform. This CRS is usefull as a kind of wildcard when no CRS were explicitly specified.

Constructor Details

DefaultEngineeringCRS

public DefaultEngineeringCRS(EngineeringCRS crs)

Constructs a new enginnering CRS with the same values than the specified one. This copy constructor provides a way to wrap an arbitrary implementation into a Geotools one or a user-defined one (as a subclass), usually in order to leverage some implementation-specific API. This constructor performs a shallow copy, i.e. the properties are not cloned.

Parameters:

crs - The CRS to copy.

Since:

2.2

DefaultEngineeringCRS

public DefaultEngineeringCRS(String name,
 EngineeringDatum datum,
 CoordinateSystem cs)

Constructs an engineering CRS from a name.

Parameters:

name - The name.

datum - The datum.

cs - The coordinate system.

DefaultEngineeringCRS

public DefaultEngineeringCRS(Map<String,?> properties,
 EngineeringDatum datum,
 CoordinateSystem cs)

Constructs an engineering CRS from a set of properties. The properties are given unchanged to the super-class constructor.

Parameters:

properties - Set of properties. Should contains at least "name".

datum - The datum.

cs - The coordinate system.

DefaultEngineeringCRS

public DefaultEngineeringCRS(Map<String,?> properties,
 EngineeringDatum datum,
 CoordinateSystem cs,
 boolean wildcard)

Constructs an engineering CRS from a set of properties. The properties are given unchanged to the super-class constructor.

Parameters:

properties - Set of properties. Should contains at least "name".

datum - The datum.

cs - The coordinate system.

wildcard - When true the CRS will transform to any other CRS with the identity transform

Method Details

getDatum

public EngineeringDatum getDatum()

Returns the datum.

Specified by:

getDatum in interface EngineeringCRS

Specified by:

getDatum in interface SingleCRS

Overrides:

getDatum in class AbstractSingleCRS

Returns:

The datum.

calculateHashCode

public int calculateHashCode()

Returns a hash value for this derived CRS.

Overrides:

calculateHashCode in class AbstractSingleCRS

Returns:

The hash code value. This value doesn't need to be the same in past or future versions of this class.

formatWKT

protected String formatWKT(Formatter formatter)

Format the inner part of a Well Known Text (WKT) element.

Overrides:

formatWKT in class AbstractCRS

Parameters:

formatter - The formatter to use.

Returns:

The name of the WKT element type, which is "LOCAL_CS".

See Also:

• Formattable.toWKT()
• Formattable.toString()

equals

public boolean equals(AbstractIdentifiedObject object,
 boolean compareMetadata)

Compares the specified object to this CRS for equality. This method is overridden because, otherwise, CARTESIAN_xD and GENERIC_xD would be considered equals when metadata are ignored.

Overrides:

equals in class AbstractSingleCRS

Parameters:

object - The object to compare to this.

compareMetadata - true for performing a strict comparaison, or false for comparing only properties relevant to transformations.

Returns:

true if both objects are equal.

isWildcard

public boolean isWildcard()

Returns true if this is a wildcard CRS, that is, one that will transform from and to any other CRS using the identity transformation