sgtplot

Class LinearTransform

java.lang.Object

sgtplot.AxisTransform

sgtplot.LinearTransform

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Transform

public class LinearTransform
extends AxisTransform
implements java.lang.Cloneable

Performs a linear transformation on cartesian axes. If the transformtion is for space the equation is phys = a*user + b and if time is phys = at*time + bt.

Since:

1.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LinearTransform() Default constructor.
LinearTransform(double p1, double p2, double u1, double u2) LinearTransform constructor.
LinearTransform(double p1, double p2, GeoDate t1, GeoDate t2) LinearTransform constructor.
LinearTransform(Range2D pr, Range2D ur) LinearTransform constructor.
LinearTransform(Range2D pr, SoTRange str) LinearTransform constructor.
LinearTransform(Range2D pr, TimeRange tr) LinearTransform constructor.

Method Summary

Modifier and Type	Method and Description
AxisTransform	copy() Create a copy of the LinearTransform.
long	getLongTimeTransU(double p) Transform from physical coordinates to long representation of time.
SoTValue	getSoTTransU(double p) Get user transform value as a SoTValue
GeoDate	getTimeTransU(double p) Transform from physical coordinates to time.
double	getTransP(double u) Transform from user to physical coordinates.
double	getTransP(GeoDate t) Transform from time to physical coordinates.
double	getTransP(long t) Transform from long representation of time to physical coordinates.
double	getTransP(SoTValue v) Get physical value as a function of SoTValue.
double	getTransU(double p) Transform from physical to user coordinates.
java.lang.String	toString()

Methods inherited from class sgtplot.AxisTransform

addPropertyChangeListener, getId, getRangeP, getRangeU, getSoTRangeU, getTimeRangeU, isSpace, isTime, removePropertyChangeListener, setId, setRangeP, setRangeP, setRangeU, setRangeU, setRangeU, setRangeU, setRangeU, setRangeU

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LinearTransform

public LinearTransform()

Default constructor. Creates a transform with arguments Transform(0.0, 1.0, 0.0, 1.0).

LinearTransform

public LinearTransform(double p1,
                       double p2,
                       double u1,
                       double u2)

LinearTransform constructor. This constructor is used to define transforms that use double user values.

Parameters:

p1 - minimum value, physical coordinates

p2 - maximum value, physical coordinates

u1 - minimum value, user coordinates

u2 - maximum value, user coordinates

LinearTransform

public LinearTransform(Range2D pr,
                       Range2D ur)

LinearTransform constructor. This constructor is used to define transforms that use double user values.

Parameters:

pr - physical coordinate range

ur - user coordinate range

See Also:

Range2D

LinearTransform

public LinearTransform(double p1,
                       double p2,
                       GeoDate t1,
                       GeoDate t2)

LinearTransform constructor. This constructor is used to define transforms that use GeoDate user values.

Parameters:

p1 - minimum value, physical coordinates

p2 - maximum value, physical coordinates

t1 - minimum time

t2 - maximum time

See Also:

GeoDate

LinearTransform

public LinearTransform(Range2D pr,
                       TimeRange tr)

LinearTransform constructor. This constructor is used to define transforms that use GeoDate user values.

Parameters:

pr - physical coordinates range

tr - time range

See Also:

Range2D, TimeRange, GeoDate

LinearTransform

public LinearTransform(Range2D pr,
                       SoTRange str)

LinearTransform constructor. This constructor is used to define transforms that use SoTRange user values.

Parameters:

pr - physical coordinates range

str - space or time range

Since:

2.0

See Also:

SoTRange, Range2D

Method Detail

getTransP

public double getTransP(double u)

Transform from user to physical coordinates.

Specified by:

getTransP in interface Transform

Parameters:

u - user value

Returns:

physical value

copy

public AxisTransform copy()

Create a copy of the LinearTransform.

Returns:

the copy

getTransP

public double getTransP(GeoDate t)

Transform from time to physical coordinates.

Parameters:

t - time

Returns:

user value

getTransP

public double getTransP(SoTValue v)

Description copied from class: AxisTransform

Get physical value as a function of SoTValue.

Specified by:

getTransP in class AxisTransform

getTransP

public double getTransP(long t)

Transform from long representation of time to physical coordinates.

Since:

3.0

getTransU

public double getTransU(double p)

Transform from physical to user coordinates.

Specified by:

getTransU in interface Transform

Parameters:

p - physical value

Returns:

user value

getTimeTransU

public GeoDate getTimeTransU(double p)

Transform from physical coordinates to time.

Parameters:

p - physical value

Returns:

time value

getLongTimeTransU

public long getLongTimeTransU(double p)

Transform from physical coordinates to long representation of time.

Parameters:

p - physical value

Returns:

milliseconds since 1970-01-01

Since:

3.0

getSoTTransU

public SoTValue getSoTTransU(double p)

Description copied from class: AxisTransform

Get user transform value as a SoTValue

Specified by:

getSoTTransU in class AxisTransform

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object