org.gvsig.fmap.geom.jts.mgeom

Class MCoordinate

java.lang.Object

Coordinate

org.gvsig.fmap.geom.jts.mgeom.MCoordinate

public class MCoordinate
extends Coordinate

This coordinate class supports 4D coordinates, where the first 3 measures (x,y,z) are coordinates in a 3 dimensional space (cartesian for example), and the fourth is a measure value used for linear referencing. Note that the measure value is independent of whether the (x,y,z) values are used. For example, the z value can not be used while the measure value is used.

While this class extends the Coordinate class, it can be used seamlessly as a substitute in the event that the Measure value is not used. In these cases the Measure value shall simply be Double.NaN

See Also:

com.vividsolutions.jts.geom.Coordinate

Field Summary

Fields

Modifier and Type	Field and Description
double	m

Constructor Summary

Constructors

Constructor and Description
MCoordinate() Default constructor
MCoordinate(Coordinate coord)
MCoordinate(double x, double y)
MCoordinate(double x, double y, double z, double m)

Method Summary

Modifier and Type	Method and Description
static MCoordinate	convertCoordinate(Coordinate coordinate) Converts a standard Coordinate instance to an MCoordinate instance.
static MCoordinate	create2d(double x, double y) A convenience method for creating a MCoordinate instance where there are only 2 coordinates and an lrs measure value.
static MCoordinate	create2dWithMeasure(double x, double y, double m) A convenience method for creating a MCoordinate instance where there are only 2 coordinates and an lrs measure value.
static MCoordinate	create3d(double x, double y, double z) A convenience method for creating a MCoordinate instance where there are 3 coordinates but no lrs measure value.
static MCoordinate	create3dWithMeasure(double x, double y, double z, double m) A convenience method for creating a MCoordinate instance where there are 3 coordinates and an lrs measure value.
boolean	equals(java.lang.Object other)
boolean	equals2DWithMeasure(Coordinate other)
boolean	equals3DWithMeasure(Coordinate other)
double	getOrdinate(int ordinateIndex) TODO: I'd like to see this method added to the base Coordinate class Returns the ordinate value specified in this Coordinate instance.
void	setOrdinate(int ordinateIndex, double value) TODO: I'd like to see this method added to the base Coordinate class Sets the value for a given ordinate.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

m

public double m

Constructor Detail

MCoordinate

public MCoordinate()

Default constructor

MCoordinate

public MCoordinate(double x,
                   double y,
                   double z,
                   double m)

MCoordinate

public MCoordinate(double x,
                   double y)

MCoordinate

public MCoordinate(Coordinate coord)

Method Detail

getOrdinate

public double getOrdinate(int ordinateIndex)

TODO: I'd like to see this method added to the base Coordinate class Returns the ordinate value specified in this Coordinate instance. The index of the desired ordinates are specified in the CoordinateSequence class; hence CoodinateSequence.X returns the x ordinate, CoodinateSequence.Y the y ordinate, CoodinateSequence.Z the z ordinate, and CoodinateSequence.M the m ordinate. Note that the dimension may not imply the desired ordinate in the case where one is using a 2 dimensional geometry with a measure value. Therefore, these constants are highly recommended.

Parameters:

ordinateIndex - the desired ordinate index.

Returns:

the value of stored in the ordinate index. Incorrect or unused indexes shall return Double.NaN

setOrdinate

public void setOrdinate(int ordinateIndex,
                        double value)

TODO: I'd like to see this method added to the base Coordinate class Sets the value for a given ordinate. This should be specified using the CoordinateSequence ordinate index constants.

Parameters:

ordinateIndex - the desired ordinate index.

value - the new ordinate value

Throws:

java.lang.IllegalArgumentException - if the ordinateIndex value is incorrect

See Also:

getOrdinate(int)

equals2DWithMeasure

public boolean equals2DWithMeasure(Coordinate other)

equals3DWithMeasure

public boolean equals3DWithMeasure(Coordinate other)

equals

public boolean equals(java.lang.Object other)

toString

public java.lang.String toString()

convertCoordinate

public static MCoordinate convertCoordinate(Coordinate coordinate)

Converts a standard Coordinate instance to an MCoordinate instance. If coordinate is already an instance of an MCoordinate, then it is simply returned. In cases where it is converted, the measure value of the coordinate is initialized to Double.NaN.

Parameters:

coordinate - The coordinate to be converted

Returns:

an instance of MCoordinate corresponding to the coordinate parameter

create2dWithMeasure

public static MCoordinate create2dWithMeasure(double x,
                                              double y,
                                              double m)

A convenience method for creating a MCoordinate instance where there are only 2 coordinates and an lrs measure value. The z value of the coordinate shall be set to Double.NaN

Parameters:

x - the x coordinate value

y - the y coordinate value

m - the lrs measure value

Returns:

The constructed MCoordinate value

create2d

public static MCoordinate create2d(double x,
                                   double y)

A convenience method for creating a MCoordinate instance where there are only 2 coordinates and an lrs measure value. The z and m value of the coordinate shall be set to Double.NaN

Parameters:

x - the x coordinate value

y - the y coordinate value

Returns:

The constructed MCoordinate value

create3dWithMeasure

public static MCoordinate create3dWithMeasure(double x,
                                              double y,
                                              double z,
                                              double m)

A convenience method for creating a MCoordinate instance where there are 3 coordinates and an lrs measure value.

Parameters:

x - the x coordinate value

y - the y coordinate value

z - the z coordinate value

m - the lrs measure value

Returns:

The constructed MCoordinate value

create3d

public static MCoordinate create3d(double x,
                                   double y,
                                   double z)

A convenience method for creating a MCoordinate instance where there are 3 coordinates but no lrs measure value. The m value of the coordinate shall be set to Double.NaN

Parameters:

x - the x coordinate value

y - the y coordinate value

z - the z coordinate value

Returns:

The constructed MCoordinate value