StandardProjection

java.lang.Object
- com.partnersoft.geometry.projection.Projection
- - com.partnersoft.geometry.projection.StandardProjection

All Implemented Interfaces:

Coggable, ProjectionConstants

Direct Known Subclasses:

AlbersEqualArea, LambertConformalConic, TransverseMercator
```
public abstract class StandardProjection
extends Projection
implements ProjectionConstants
```
Standard abstract class to derive projections from. Most projections will work fine as subclasses of this, unless really weird. Includes lots of convenience functions to make your algorithms look nicer.
Copyright 2004 Partner Software, Inc.

Author:

Paul Reavis, Russell Cagle

Field Summary

Fields
Modifier and Type	Field and Description
`protected double`	`a` The major axis of the ellipsoid.
`protected double`	`b` The minor axis of the ellipsoid.
`protected java.lang.String`	`datum`
`protected double`	`e` The eccentricity of the ellipsoid.
`protected Ellipsoid`	`ellipsoid`
`protected double`	`es` The square of the eccentricity.
`protected double`	`esp` es / (1.0 - es)
`protected boolean`	`initialized` Set this to false to force initialize() to be run again.
`protected double`	`lam0` Longitude of origin in radians.
`static java.lang.String`	`NAD27`
`static java.lang.String`	`NAD83`
`protected double`	`originLatitude`
`protected double`	`originLongitude`
`protected double`	`originX`
`protected double`	`originY`
`protected double`	`phi0` Latitude of origin in radians.

Fields inherited from interface com.partnersoft.geometry.projection.ProjectionConstants
ATOL, DEG2RAD, EPSILON, FOURTHPI, HALFPI, INTERNATIONAL_FEET_TO_METERS, METERS_TO_INTERNATIONAL_FEET, METERS_TO_US_SURVEY_FEET, NULL_PROJECTION, ONE_TOL, PI, RAD2DEG, TOL, TWOPI, US_SURVEY_FEET_TO_METERS

Constructor Summary

Constructors
Constructor and Description

StandardProjection()

StandardProjection(Cog newState)

Constructors
Constructor and Description
`StandardProjection()`
`StandardProjection(Cog newState)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected static double`	`aacos(double v)`
`protected static double`	`aasin(double v)`
`protected static double`	`aatan2(double n, double d)`
`protected static double`	`abs(double value)`
`protected static double`	`asin(double x)`
`protected static double`	`asqrt(double v)`
`protected static double`	`atan(double a)`
`protected static double`	`atan2(double a, double b)`
`protected static double`	`cos(double theta)`
`java.lang.String`	`getDatum()`
`java.lang.String`	`getEllipsoid()`
`double`	`getOriginLatitude()`
`double`	`getOriginLongitude()`
`double`	`getOriginX()`
`double`	`getOriginY()`
`protected Point`	`gpsToProjection(double longitude, double latitude)` Assumes that GPS coordinates are in NAD83, and converts them to NAD27 if the projection is in NAD27.
`protected static double`	`hypot(double x, double y)`
`protected void`	`initialize()`
`protected abstract void`	`initializeImp()`
`protected static double`	`log(double x)`
`protected static double[]`	`pj_enfn(double es)`
`protected static double`	`pj_msfn(double sinphi, double cosphi, double es)`
`protected static double`	`pj_phi2(double ts, double e)`
`protected static double`	`pj_qsfn(double sinphi, double e, double one_es)`
`protected static double`	`pj_tsfn(double phi, double sinphi, double e)`
`protected static double`	`pow(double a, double b)`
`protected Point`	`projectionToGPS(double longitude, double latitude)` Converts NAD27 coordinates to NAD83.
`void`	`setDatum(java.lang.String newDatum)`
`void`	`setEllipsoid(java.lang.String newEllipsoid)`
`void`	`setOriginLatitude(double newOriginLatitude)`
`void`	`setOriginLongitude(double newOriginLongitude)`
`void`	`setOriginX(double newX)`
`void`	`setOriginY(double newY)`
`protected static double`	`sin(double theta)`
`protected static double`	`sqrt(double value)`
`protected static double`	`tan(double theta)`
`Cog`	`toCog()` Returns the complete internal state of this object in the form of a `Cog`.
`protected static double`	`toDegrees(double radians)`
`protected static double`	`toRadians(double degrees)`

Methods inherited from class com.partnersoft.geometry.projection.Projection
getName, project, project, project, project, project, projectFeet, projectFeet, projectFeet, projectFeet, projectFeet, reverse, reverse, reverse, reverse, reverse, reverseFeet, reverseFeet, reverseFeet, reverseFeet, reverseFeet, setName

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NAD27
```
public static java.lang.String NAD27
```

NAD83
```
public static java.lang.String NAD83
```

originLatitude
```
protected double originLatitude
```

originLongitude
```
protected double originLongitude
```

originX
```
protected double originX
```

originY
```
protected double originY
```

ellipsoid
```
protected Ellipsoid ellipsoid
```

datum
```
protected java.lang.String datum
```

initialized
```
protected transient boolean initialized
```
Set this to false to force initialize() to be run again.

e
```
protected transient double e
```
The eccentricity of the ellipsoid.

es
```
protected transient double es
```
The square of the eccentricity.

esp
```
protected transient double esp
```
es / (1.0 - es)

a
```
protected transient double a
```
The major axis of the ellipsoid.

b
```
protected transient double b
```
The minor axis of the ellipsoid.

lam0
```
protected transient double lam0
```
Longitude of origin in radians.

phi0
```
protected transient double phi0
```
Latitude of origin in radians.

Constructor Detail

StandardProjection
```
public StandardProjection()
```

StandardProjection

public StandardProjection(Cog newState)

Method Detail

hypot

protected static double hypot(double x,
           double y)

pj_enfn

protected static double[] pj_enfn(double es)

pj_tsfn

protected static double pj_tsfn(double phi,
             double sinphi,
             double e)

pj_phi2

protected static double pj_phi2(double ts,
             double e)
                         throws java.lang.Exception

Throws:: java.lang.Exception

pj_msfn

protected static double pj_msfn(double sinphi,
             double cosphi,
             double es)

pj_qsfn

protected static double pj_qsfn(double sinphi,
             double e,
             double one_es)

aasin

protected static double aasin(double v)

aacos

protected static double aacos(double v)

asqrt

protected static double asqrt(double v)

aatan2

protected static double aatan2(double n,
            double d)

toDegrees

protected static double toDegrees(double radians)

toRadians

protected static double toRadians(double degrees)

abs

protected static double abs(double value)

sqrt

protected static double sqrt(double value)

sin

protected static double sin(double theta)

cos

protected static double cos(double theta)

log

protected static double log(double x)

asin

protected static double asin(double x)

atan2

protected static double atan2(double a,
           double b)

pow

protected static double pow(double a,
         double b)

tan

protected static double tan(double theta)

atan

protected static double atan(double a)

getOriginLatitude
```
public double getOriginLatitude()
```

setOriginLatitude

public void setOriginLatitude(double newOriginLatitude)

getOriginLongitude
```
public double getOriginLongitude()
```

setOriginLongitude

public void setOriginLongitude(double newOriginLongitude)

getOriginX
```
public double getOriginX()
```

setOriginX
```
public void setOriginX(double newX)
```

getOriginY
```
public double getOriginY()
```

setOriginY
```
public void setOriginY(double newY)
```

getEllipsoid

public java.lang.String getEllipsoid()

setEllipsoid

public void setEllipsoid(java.lang.String newEllipsoid)

getDatum
```
public java.lang.String getDatum()
```

setDatum

public void setDatum(java.lang.String newDatum)

gpsToProjection
```
protected Point gpsToProjection(double longitude,
                    double latitude)
```
Assumes that GPS coordinates are in NAD83, and converts them to NAD27 if the projection is in NAD27.

projectionToGPS

protected Point projectionToGPS(double longitude,
                    double latitude)

Converts NAD27 coordinates to NAD83.

initialize
```
protected void initialize()
```

initializeImp

protected abstract void initializeImp()

toCog
```
public Cog toCog()
```
Description copied from interface: Coggable

Returns the complete internal state of this object in the form of a Cog.

Specified by:

toCog in interface Coggable

Returns:
Cog representing the internal state of this object

Class StandardProjection

Field Summary

Fields inherited from interface com.partnersoft.geometry.projection.ProjectionConstants

Constructor Summary

Method Summary

Methods inherited from class com.partnersoft.geometry.projection.Projection

Methods inherited from class java.lang.Object

Field Detail

NAD27

NAD83

originLatitude

originLongitude

originX

originY

ellipsoid

datum

initialized

e

es

esp

a

b

lam0

phi0

Constructor Detail

StandardProjection

StandardProjection

Method Detail

hypot

pj_enfn

pj_tsfn

pj_phi2

pj_msfn

pj_qsfn

aasin

aacos

asqrt

aatan2

toDegrees

toRadians

abs

sqrt

sin

cos

log

asin

atan2

pow

tan

atan

getOriginLatitude

setOriginLatitude

getOriginLongitude

setOriginLongitude

getOriginX

setOriginX

getOriginY

setOriginY

getEllipsoid

setEllipsoid

getDatum

setDatum

gpsToProjection

projectionToGPS

initialize

initializeImp

toCog