org.geotools.referencing.operation.transform
Class NZMGTransform

java.lang.Object
  org.geotools.referencing.wkt.Formattable
      org.geotools.referencing.operation.transform.AbstractMathTransform
          org.geotools.referencing.operation.transform.NZMGTransform

All Implemented Interfaces:

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

public class NZMGTransform

extends AbstractMathTransform

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

Implementation of the nzmg (New Zealand Map Grid) projection.

This is an implementation of algorithm published by Land Information New Zealand. The algorithm is documented here.

See Also:

Serialized Form

Nested Class Summary

static class

NZMGTransform.Provider The provider for NZMGTransform.

Field Summary

static double[][]	A
static double[][]	B
static double[]	tphi
static double[]	tpsi

Constructor Summary

NZMGTransform()

Method Summary

protected double[]	add(double[] c1, double[] c2) Adds to complex numbers.
protected double[]	divide(double[] c1, double[] c2) Divides one complex number by another.
int	getSourceDimensions() Gets the dimension of input points.
int	getTargetDimensions() Gets the dimension of output points.
org.opengis.referencing.operation.MathTransform	inverse() Creates the inverse transform of this object.
void	inverseTransform(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts)
protected double[]	multiply(double[] c, double s) Multiplies a complex number by a scalar.
protected double[]	multiply(double[] c1, double[] c2) Multplies two complex numbers.
protected double[]	power(double[] c, int power) Computes the integer power of a complex number up to 6.
void	setCentralMeridian(double value)
void	setFalseEasting(double value)
void	setLatitudeOfOrigin(double value)
void	setNorthEasting(double value)
void	setSemiMajorAxis(double value)
void	transform(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts)

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

createTransformedShape, derivative, derivative, ensureNonNull, equals, formatWKT, getDimSource, getDimTarget, getParameterDescriptors, getParameterValues, hashCode, isIdentity, needCopy, rollLongitude, transform, transform, 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, transform

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

derivative, getDimSource, getDimTarget, isIdentity, toWKT, transform, transform

Field Detail

A

public static double[][] A

B

public static double[][] B

tphi

public static double[] tphi

tpsi

public static double[] tpsi

Constructor Detail

NZMGTransform

public NZMGTransform()

Method Detail

getSourceDimensions

public int getSourceDimensions()

Description copied from class: AbstractMathTransform

Gets the dimension of input points.

Specified by:

getSourceDimensions in interface org.opengis.referencing.operation.MathTransform

Specified by:

getSourceDimensions in class AbstractMathTransform

getTargetDimensions

public int getTargetDimensions()

Description copied from class: AbstractMathTransform

Gets the dimension of output points.

Specified by:

getTargetDimensions in interface org.opengis.referencing.operation.MathTransform

Specified by:

getTargetDimensions in class AbstractMathTransform

setSemiMajorAxis

public void setSemiMajorAxis(double value)

setLatitudeOfOrigin

public void setLatitudeOfOrigin(double value)

setCentralMeridian

public void setCentralMeridian(double value)

setFalseEasting

public void setFalseEasting(double value)

setNorthEasting

public void setNorthEasting(double value)

transform

public void transform(double[] srcPts,
                      int srcOff,
                      double[] dstPts,
                      int dstOff,
                      int numPts)
               throws org.opengis.referencing.operation.TransformException

Specified by:

transform in interface org.opengis.referencing.operation.MathTransform

Throws:

org.opengis.referencing.operation.TransformException

inverseTransform

public void inverseTransform(double[] srcPts,
                             int srcOff,
                             double[] dstPts,
                             int dstOff,
                             int numPts)

inverse

public org.opengis.referencing.operation.MathTransform inverse()
                                                        throws org.opengis.referencing.operation.NoninvertibleTransformException

Description copied from class: AbstractMathTransform

Creates the inverse transform of this object. The default implementation returns if this transform is an identity transform, and throws a NoninvertibleTransformException otherwise. Subclasses should override this method.

Specified by:

inverse in interface org.opengis.referencing.operation.MathTransform

Overrides:

inverse in class AbstractMathTransform

Throws:

org.opengis.referencing.operation.NoninvertibleTransformException

multiply

protected double[] multiply(double[] c1,
                            double[] c2)

Multplies two complex numbers.

Parameters:

c1 - DOCUMENT ME!

c2 - DOCUMENT ME!

Returns:

DOCUMENT ME!

multiply

protected double[] multiply(double[] c,
                            double s)

Multiplies a complex number by a scalar.

Parameters:

c - DOCUMENT ME!

s - DOCUMENT ME!

Returns:

DOCUMENT ME!

divide

protected double[] divide(double[] c1,
                          double[] c2)

Divides one complex number by another.

Parameters:

c1 - DOCUMENT ME!

c2 - DOCUMENT ME!

Returns:

DOCUMENT ME!

add

protected double[] add(double[] c1,
                       double[] c2)

Adds to complex numbers.

Parameters:

c1 - DOCUMENT ME!

c2 - DOCUMENT ME!

Returns:

DOCUMENT ME!

power

protected double[] power(double[] c,
                         int power)

Computes the integer power of a complex number up to 6.

Parameters:

c - DOCUMENT ME!

power - DOCUMENT ME!

Returns:

DOCUMENT ME!

Throws:

java.lang.IllegalArgumentException - DOCUMENT ME!