org.deegree.crs.transformations.coordinate
Class MatrixTransform

java.lang.Object
  org.deegree.crs.CRSIdentifiable
      org.deegree.crs.transformations.Transformation
          org.deegree.crs.transformations.coordinate.CRSTransformation
              org.deegree.crs.transformations.coordinate.MatrixTransform

public class MatrixTransform
extends CRSTransformation

The MatrixTransform class allows transformations using matrices. Although technically n × m matrices are possible, at the moment only 2 × 2, 3 × 3 and 4 × 4 matrices are supported.

Version:

$Revision: 18171 $, $Date: 2009-06-17 16:00:07 +0200 (Mi, 17 Jun 2009) $

Author:

Rutger Bezema, last edited by: $Author: mschneider $

Constructor Summary

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.GMatrix matrix)
Construct a transform.

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.GMatrix matrix, CRSIdentifiable id)
Construct a transform.

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.Matrix3d matrix)
Construct a 3d transform.

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.Matrix3d matrix, CRSIdentifiable id)
Construct a 3d transform.

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.Matrix4d matrix)
Construct a 4d transform.

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.Matrix4d matrix, CRSIdentifiable id)
Construct a 4d transform.

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.Matrix4d matrix, String transformationName)
Construct a 4d transform.

MatrixTransform(CoordinateSystem source, CoordinateSystem target, javax.vecmath.Matrix4d matrix, String transformationName, CRSIdentifiable id)
Construct a 4d transform.

Method Summary

List<javax.vecmath.Point3d>	doTransform(List<javax.vecmath.Point3d> srcPts) Do a transformation, e.g. the incoming data will be transformed into other coordinates.
boolean	equals(Object object)
int	getDimSource()
int	getDimTarget()
String	getImplementationName()
javax.vecmath.GMatrix	getMatrix()
boolean	isIdentity()

Methods inherited from class org.deegree.crs.transformations.Transformation

areInverse, canTransform, createFromTo, doTransform, doTransform, getSourceCRS, getSourceDimension, getTargetCRS, getTargetDimension, getTransformationName, getTransformationPath, inverse, isInverseTransform, setSourceCRS

Methods inherited from class org.deegree.crs.CRSIdentifiable

addAreaOfUse, addName, checkForNullObject, checkForNullObject, checkForNullObject, getAreaOfUse, getAreaOfUseBBox, getAreasOfUse, getCode, getCodeAndName, getCodes, getDescription, getDescriptions, getName, getNames, getOrignalCodeStrings, getVersion, getVersions, hasCode, hasId, hasIdOrName, setDefaultAreaOfUse, setDefaultDescription, setDefaultId, setDefaultName, setDefaultVersion, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.GMatrix matrix,
                       CRSIdentifiable id)

Construct a transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

id - an identifiable instance containing information about this transformation

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.GMatrix matrix)

Construct a transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.Matrix3d matrix,
                       CRSIdentifiable id)

Construct a 3d transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

id - an identifiable instance containing information about this transformation

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.Matrix3d matrix)

Construct a 3d transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.Matrix4d matrix,
                       CRSIdentifiable id)

Construct a 4d transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

id - an identifiable instance containing information about this transformation

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.Matrix4d matrix)

Construct a 4d transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.Matrix4d matrix,
                       String transformationName,
                       CRSIdentifiable id)

Construct a 4d transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

transformationName - the 'optional' name of the transformation, which is useful to specify the 'helmert' transformation.

id - an identifiable instance containing information about this transformation

MatrixTransform

public MatrixTransform(CoordinateSystem source,
                       CoordinateSystem target,
                       javax.vecmath.Matrix4d matrix,
                       String transformationName)

Construct a 4d transform.

Parameters:

source - the source coordinate system

target - the target coordinate system.

matrix -

transformationName - the 'optional' name of the transformation, which is useful to specify the 'helmert' transformation.

Method Detail

doTransform

public List<javax.vecmath.Point3d> doTransform(List<javax.vecmath.Point3d> srcPts)

Description copied from class: Transformation

Do a transformation, e.g. the incoming data will be transformed into other coordinates.

Specified by:

doTransform in class Transformation

Parameters:

srcPts - the points which must be transformed, expected are following values either, long_1, lat_1, height_1, long_2, lat_2, height_2. or long_1, lat_1, long_2, lat_2

Returns:

the transformed points

getDimSource

public int getDimSource()

Returns:

the dimension of input points.

getDimTarget

public int getDimTarget()

Returns:

the dimension of output points.

isIdentity

public boolean isIdentity()

Specified by:

isIdentity in class Transformation

Returns:

true if this transformation holds an identity matrix (e.g. doesn't transform at all).

equals

public boolean equals(Object object)

Overrides:

equals in class CRSIdentifiable

getMatrix

public final javax.vecmath.GMatrix getMatrix()

Returns:

the matrix.

getImplementationName

public String getImplementationName()

Specified by:

getImplementationName in class Transformation

Returns:

the name of the transformation.