org.deegree_impl.model.ct
Class AffineTransform2D

java.lang.Object
  java.awt.geom.AffineTransform
      org.deegree_impl.model.resources.XAffineTransform
          org.deegree_impl.model.ct.AffineTransform2D

All Implemented Interfaces:

java.lang.Cloneable, MathTransform, MathTransform2D, java.io.Serializable

final class AffineTransform2D

extends XAffineTransform

implements MathTransform2D

Transforms two-dimensional coordinate points using an AffineTransform.

Version:

1.00

Author:

Martin Desruisseaux

Field Summary

private AffineTransform2D	inverse The inverse transform.
private static long	serialVersionUID Serial number for interoperability with different versions.

Fields inherited from class org.deegree_impl.model.resources.XAffineTransform

Fields inherited from class java.awt.geom.AffineTransform

TYPE_FLIP, TYPE_GENERAL_ROTATION, TYPE_GENERAL_SCALE, TYPE_GENERAL_TRANSFORM, TYPE_IDENTITY, TYPE_MASK_ROTATION, TYPE_MASK_SCALE, TYPE_QUADRANT_ROTATION, TYPE_TRANSLATION, TYPE_UNIFORM_SCALE

Constructor Summary

protected

AffineTransform2D(java.awt.geom.AffineTransform transform) Construct an affine transform.

Method Summary

protected void	checkPermission() Throws an UnsupportedOperationException when a mutable method is invoked, since AffineTransform2D must be immutable.
Matrix	derivative(CoordinatePoint point) Gets the derivative of this transform at a point.
Matrix	derivative(java.awt.geom.Point2D point) Gets the derivative of this transform at a point.
int	getDimSource() Gets the dimension of input points.
int	getDimTarget() Gets the dimension of output points.
MathTransform	inverse() Creates the inverse transform of this object.
java.lang.String	toString() Returns the WKT for this affine transform.
CoordinatePoint	transform(CoordinatePoint ptSrc, CoordinatePoint ptDst) Transforms the specified ptSrc and stores the result in ptDst.

Methods inherited from class org.deegree_impl.model.resources.XAffineTransform

concatenate, getScaleInstance, getScaleX0, getScaleY0, inverseDeltaTransform, inverseTransform, preConcatenate, rotate, rotate, round, scale, setToIdentity, setToRotation, setToRotation, setToScale, setToShear, setToTranslation, setTransform, setTransform, shear, transform, translate

Methods inherited from class java.awt.geom.AffineTransform

clone, createInverse, createTransformedShape, deltaTransform, deltaTransform, equals, getDeterminant, getMatrix, getRotateInstance, getRotateInstance, getScaleInstance, getScaleX, getScaleY, getShearInstance, getShearX, getShearY, getTranslateInstance, getTranslateX, getTranslateY, getType, hashCode, inverseTransform, inverseTransform, isIdentity, transform, transform, transform, transform, transform, transform

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree_impl.model.ct.MathTransform2D

createTransformedShape, transform

Methods inherited from interface org.deegree_impl.model.ct.MathTransform

isIdentity, transform, transform

Field Detail

serialVersionUID

private static final long serialVersionUID

Serial number for interoperability with different versions.

See Also:

Constant Field Values

inverse

private transient AffineTransform2D inverse

The inverse transform. This field will be computed only when needed.

Constructor Detail

AffineTransform2D

protected AffineTransform2D(java.awt.geom.AffineTransform transform)

Construct an affine transform.

Method Detail

checkPermission

protected void checkPermission()

Throws an UnsupportedOperationException when a mutable method is invoked, since AffineTransform2D must be immutable.

Specified by:

checkPermission in class XAffineTransform

getDimSource

public int getDimSource()

Gets the dimension of input points.

Specified by:

getDimSource in interface MathTransform

See Also:

CT_MathTransform.getDimSource()

getDimTarget

public int getDimTarget()

Gets the dimension of output points.

Specified by:

getDimTarget in interface MathTransform

See Also:

CT_MathTransform.getDimTarget()

transform

public CoordinatePoint transform(CoordinatePoint ptSrc,
                                 CoordinatePoint ptDst)

Transforms the specified ptSrc and stores the result in ptDst.

Specified by:

transform in interface MathTransform

Parameters:

ptSrc - the specified coordinate point to be transformed.

ptDst - the specified coordinate point that stores the result of transforming ptSrc, or null.

Returns:

the coordinate point after transforming ptSrc and storing the result in ptDst, or a newly created point if ptDst was null.

derivative

public Matrix derivative(java.awt.geom.Point2D point)

Gets the derivative of this transform at a point. For an affine transform, the derivative is the same everywhere.

Specified by:

derivative in interface MathTransform2D

Parameters:

point - The coordinate point where to evaluate the derivative. Null value is accepted only if the derivative is the same everywhere. For example affine transform accept null value since they produces identical derivative no matter the coordinate value. But most map projection will requires a non-null value.

Returns:

The derivative at the specified point as a 2×2 matrix. This method never returns an internal object: changing the matrix will not change the state of this math transform.

derivative

public Matrix derivative(CoordinatePoint point)

Gets the derivative of this transform at a point. For an affine transform, the derivative is the same everywhere.

Specified by:

derivative in interface MathTransform

Parameters:

point - The coordinate point where to evaluate the derivative. Null value is accepted only if the derivative is the same everywhere. For example affine transform accept null value since they produces identical derivative no matter the coordinate value. But most map projection will requires a non-null value.

Returns:

The derivative at the specified point (never null). This method never returns an internal object: changing the matrix will not change the state of this math transform.

inverse

public MathTransform inverse()
                      throws NoninvertibleTransformException

Creates the inverse transform of this object.

Specified by:

inverse in interface MathTransform

Returns:

The inverse transform.

Throws:

NoninvertibleTransformException - if the transform can't be inversed.

toString

public java.lang.String toString()

Returns the WKT for this affine transform.