org.geotools.referencing.operation.projection
Class StereographicOblique

java.lang.Object
  org.geotools.referencing.wkt.Formattable
      org.geotools.referencing.operation.transform.AbstractMathTransform
          org.geotools.referencing.operation.projection.MapProjection
              org.geotools.referencing.operation.projection.Stereographic
                  org.geotools.referencing.operation.projection.StereographicOblique

All Implemented Interfaces:

org.opengis.referencing.operation.MathTransform, org.opengis.referencing.operation.MathTransform2D, java.io.Serializable

Direct Known Subclasses:

StereographicEquatorial

public class StereographicOblique

extends Stereographic

The USGS oblique/equatorial case of the stereographic projection. This is similar but NOT equal to EPSG code 9809.

Since:

2.1

Version:

$Id: StereographicOblique.java 17672 2006-01-19 00:25:55Z desruisseaux $

Author:

Andr? Gosselin, Martin Desruisseaux, Rueben Schulz

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class org.geotools.referencing.operation.projection.Stereographic

Stereographic.Provider_North_Pole, Stereographic.Provider_Oblique, Stereographic.Provider_Polar_A, Stereographic.Provider_Polar_B, Stereographic.Provider_South_Pole, Stereographic.Provider_USGS

Nested classes inherited from class org.geotools.referencing.operation.projection.MapProjection

MapProjection.AbstractProvider

Field Summary

Fields inherited from class org.geotools.referencing.operation.projection.Stereographic

EPSG, POLAR_A, POLAR_B, POLAR_NORTH, POLAR_SOUTH, stereoType, USGS

Fields inherited from class org.geotools.referencing.operation.projection.MapProjection

centralMeridian, excentricity, excentricitySquared, falseEasting, falseNorthing, globalScale, isSpherical, latitudeOfOrigin, scaleFactor, semiMajor, semiMinor

Method Summary

boolean	equals(java.lang.Object object) Compares the specified object with this map projection for equality.
int	hashCode() Returns a hash value for this map projection.
protected java.awt.geom.Point2D	inverseTransformNormalized(double x, double y, java.awt.geom.Point2D ptDst) Transforms the specified (x,y) coordinate and stores the result in .
protected double	ssfn(double phi, double sinphi) Compute part of function (3-1) from Snyder
protected java.awt.geom.Point2D	transformNormalized(double x, double y, java.awt.geom.Point2D ptDst) Transforms the specified (x,y) coordinate (units in radians) and stores the result in (linear distance on a unit sphere).

Methods inherited from class org.geotools.referencing.operation.projection.Stereographic

getParameterDescriptors

Methods inherited from class org.geotools.referencing.operation.projection.MapProjection

getParameterValues, getSourceDimensions, getTargetDimensions, getToleranceForAssertions, inverse, transform, transform, transform

Methods inherited from class org.geotools.referencing.operation.transform.AbstractMathTransform

createTransformedShape, derivative, derivative, ensureNonNull, formatWKT, getDimSource, getDimTarget, isIdentity, needCopy, rollLongitude, transform

Methods inherited from class org.geotools.referencing.wkt.Formattable

toString, toWKT, toWKT, toWKT

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opengis.referencing.operation.MathTransform2D

createTransformedShape, derivative

Methods inherited from interface org.opengis.referencing.operation.MathTransform

derivative, isIdentity, toWKT, transform

Method Detail

transformNormalized

protected java.awt.geom.Point2D transformNormalized(double x,
                                                    double y,
                                                    java.awt.geom.Point2D ptDst)
                                             throws ProjectionException

Transforms the specified (x,y) coordinate (units in radians) and stores the result in (linear distance on a unit sphere).

Specified by:

transformNormalized in class MapProjection

Parameters:

x - The longitude of the coordinate, in radians.

y - The latitude of the coordinate, in radians.

ptDst - the specified coordinate point that stores the result of transforming , or . Ordinates will be in a dimensionless unit, as a linear distance on a unit sphere or ellipse.

Returns:

the coordinate point after transforming , and storing the result in .

Throws:

ProjectionException - if the point can't be transformed.

inverseTransformNormalized

protected java.awt.geom.Point2D inverseTransformNormalized(double x,
                                                           double y,
                                                           java.awt.geom.Point2D ptDst)
                                                    throws ProjectionException

Transforms the specified (x,y) coordinate and stores the result in .

Specified by:

inverseTransformNormalized in class MapProjection

Parameters:

x - The easting of the coordinate, linear distance on a unit sphere or ellipse.

y - The northing of the coordinate, linear distance on a unit sphere or ellipse.

ptDst - the specified coordinate point that stores the result of transforming , or . Ordinates will be in radians.

Returns:

the coordinate point after transforming , and storing the result in .

Throws:

ProjectionException - if the point can't be transformed.

ssfn

protected final double ssfn(double phi,
                            double sinphi)

Compute part of function (3-1) from Snyder

hashCode

public int hashCode()

Returns a hash value for this map projection.

Overrides:

hashCode in class MapProjection

equals

public boolean equals(java.lang.Object object)

Compares the specified object with this map projection for equality.

Overrides:

equals in class MapProjection