org.deegree_impl.model.ct
Class AbridgedMolodenskiTransform

java.lang.Object
  org.deegree_impl.model.ct.AbstractMathTransform
      org.deegree_impl.model.ct.AbridgedMolodenskiTransform

All Implemented Interfaces:

MathTransform, java.io.Serializable

class AbridgedMolodenskiTransform

extends AbstractMathTransform

implements java.io.Serializable

Transforms a three dimensional geographic points using abridged versions of formulas derived by Molodenski.

Version:

1.00

Author:

OpenGIS (www.opengis.org), Martin Desruisseaux

Nested Class Summary

(package private) static class

AbridgedMolodenskiTransform.Provider The provider for AbridgedMolodenskiTransform.

Nested classes inherited from class org.deegree_impl.model.ct.AbstractMathTransform

AbstractMathTransform.Inverse

Field Summary

private double	a Source equatorial radius in meters.
private double	adf Defined as (a*df) + (f*da).
private double	b Source polar radius in meters
private double	da Difference in the semi-major axes (a1 - a2) of the first and second ellipsoids.
private double	df Difference in the flattening of the two ellipsoids.
private double	dx X,Y,Z shift in meters
private double	dy X,Y,Z shift in meters
private double	dz X,Y,Z shift in meters
private double	e2 Square of the eccentricity of the ellipsoid.
private double	f Source flattening factor.

Constructor Summary

protected

AbridgedMolodenskiTransform(HorizontalDatum source, HorizontalDatum target) Construct a transform.

Method Summary

boolean	equals(java.lang.Object object) Compares the specified object with this math transform for equality.
int	getDimSource() Gets the dimension of input points, which is 3.
int	getDimTarget() Gets the dimension of output points, which is the same than getDimSource().
int	hashCode() Returns a hash value for this transform.
boolean	isIdentity() Tests whether this transform does not move any points.
java.lang.String	toString() Returns the WKT for this math transform.
void	transform(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts) Transforms a list of coordinate point ordinal values.
void	transform(float[] srcPts, int srcOff, float[] dstPts, int dstOff, int numPts) Transforms a list of coordinate point ordinal values.

Methods inherited from class org.deegree_impl.model.ct.AbstractMathTransform

addParameter, addParameter, createTransformedShape, createTransformedShape, derivative, derivative, getName, inverse, paramMT, toOpenGIS, transform, transform

Methods inherited from class java.lang.Object

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

Field Detail

dx

private final double dx

X,Y,Z shift in meters

dy

private final double dy

X,Y,Z shift in meters

dz

private final double dz

X,Y,Z shift in meters

a

private final double a

Source equatorial radius in meters.

b

private final double b

Source polar radius in meters

f

private final double f

Source flattening factor.

da

private final double da

Difference in the semi-major axes (a1 - a2) of the first and second ellipsoids.

df

private final double df

Difference in the flattening of the two ellipsoids.

e2

private final double e2

Square of the eccentricity of the ellipsoid.

adf

private final double adf

Defined as (a*df) + (f*da).

Constructor Detail

AbridgedMolodenskiTransform

protected AbridgedMolodenskiTransform(HorizontalDatum source,
                                      HorizontalDatum target)

Construct a transform.

Method Detail

transform

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

Transforms a list of coordinate point ordinal values.

Specified by:

transform in interface MathTransform

Parameters:

srcPts - the array containing the source point coordinates.

srcOff - the offset to the first point to be transformed in the source array.

dstPts - the array into which the transformed point coordinates are returned. May be the same than srcPts.

dstOff - the offset to the location of the first transformed point that is stored in the destination array.

numPts - the number of point objects to be transformed.

transform

public void transform(float[] srcPts,
                      int srcOff,
                      float[] dstPts,
                      int dstOff,
                      int numPts)

Transforms a list of coordinate point ordinal values.

Specified by:

transform in interface MathTransform

Overrides:

transform in class AbstractMathTransform

getDimSource

public int getDimSource()

Gets the dimension of input points, which is 3.

Specified by:

getDimSource in interface MathTransform

See Also:

CT_MathTransform.getDimSource()

getDimTarget

public final int getDimTarget()

Gets the dimension of output points, which is the same than getDimSource().

Specified by:

getDimTarget in interface MathTransform

See Also:

CT_MathTransform.getDimTarget()

isIdentity

public final boolean isIdentity()

Tests whether this transform does not move any points. This method returns always false.

Specified by:

isIdentity in interface MathTransform

Returns:

true if this MathTransform is an identity transform; false otherwise.

hashCode

public final int hashCode()

Returns a hash value for this transform.

Overrides:

hashCode in class AbstractMathTransform

equals

public final boolean equals(java.lang.Object object)

Compares the specified object with this math transform for equality.

Overrides:

equals in class AbstractMathTransform

toString

public final java.lang.String toString()

Returns the WKT for this math transform.

Overrides:

toString in class AbstractMathTransform