math.geom2d.transform
Class AbstractAffineTransform2D.Identity2D

java.lang.Object
  math.geom2d.transform.AbstractAffineTransform2D
      math.geom2d.transform.GenericAffineTransform2D
          math.geom2d.transform.AbstractAffineTransform2D.Identity2D

All Implemented Interfaces:

AffineTransform2D, Bijection2D, Isometry2D, LinearTransform2D, Motion2D, Similarity2D, Transform2D

Enclosing class:

AbstractAffineTransform2D

public static final class AbstractAffineTransform2D.Identity2D
extends GenericAffineTransform2D
implements LinearTransform2D, Motion2D

Nested Class Summary

Nested classes/interfaces inherited from class math.geom2d.transform.AbstractAffineTransform2D

AbstractAffineTransform2D.Identity2D

Field Summary

Fields inherited from class math.geom2d.transform.GenericAffineTransform2D

m00, m01, m02, m10, m11, m12

Constructor Summary

AbstractAffineTransform2D.Identity2D()

Method Summary

AbstractAffineTransform2D.Identity2D	getInverseTransform()
LinearTransform2D	getLinearPart()
double	getScalingFactor() Returns the scaling factor of the transform.
Translation2D	getTranslationPart()
boolean	isDirect() Check if the transform is direct, i.e. it preserves the orientation of transformed shapes.
boolean	isIdentity() Check if the transform is equivalent to the identity transform.
boolean	isIsometry() Check if the transform is an isometry, i.e. a compound of translation, rotation and reflection.
boolean	isMotion() Check if the transform is a motion, i.e. a compound of translations and rotation.
boolean	isSimilarity()

Methods inherited from class math.geom2d.transform.GenericAffineTransform2D

compose, getAffineMatrix, getCoefficients, preConcatenate, setToIdentity, setTransform, setTransform, transform, transform

Methods inherited from class math.geom2d.transform.AbstractAffineTransform2D

createRotation, createRotation, createRotation, createScaling, createScaling, createTranslation, createTranslation, equals, isDirect, isIdentity, isIsometry, isMotion, isSimilarity, transform

Methods inherited from class java.lang.Object

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

Methods inherited from interface math.geom2d.transform.AffineTransform2D

compose, getAffineMatrix, getCoefficients

Methods inherited from interface math.geom2d.transform.Transform2D

transform, transform, transform

Constructor Detail

AbstractAffineTransform2D.Identity2D

public AbstractAffineTransform2D.Identity2D()

Method Detail

getLinearPart

public LinearTransform2D getLinearPart()

Specified by:

getLinearPart in interface Similarity2D

Returns:

the linear part of the transform.

getScalingFactor

public double getScalingFactor()

Description copied from interface: Similarity2D

Returns the scaling factor of the transform. The scaling factor is positive for direct transforms.

Specified by:

getScalingFactor in interface Similarity2D

Returns:

the scaling factor of the transform.

getTranslationPart

public Translation2D getTranslationPart()

Specified by:

getTranslationPart in interface Similarity2D

Returns:

the translation part of the transform.

getInverseTransform

public AbstractAffineTransform2D.Identity2D getInverseTransform()

Specified by:

getInverseTransform in interface Bijection2D

Specified by:

getInverseTransform in interface LinearTransform2D

Overrides:

getInverseTransform in class GenericAffineTransform2D

isSimilarity

public boolean isSimilarity()

Specified by:

isSimilarity in interface AffineTransform2D

Overrides:

isSimilarity in class AbstractAffineTransform2D

isMotion

public boolean isMotion()

Description copied from interface: AffineTransform2D

Check if the transform is a motion, i.e. a compound of translations and rotation. Motion preserves area and orientation (directed or undirected) of shapes unchanged.

Specified by:

isMotion in interface AffineTransform2D

Overrides:

isMotion in class AbstractAffineTransform2D

Returns:

true in case of motion.

isIsometry

public boolean isIsometry()

Description copied from interface: AffineTransform2D

Check if the transform is an isometry, i.e. a compound of translation, rotation and reflection. Isometries preserves area of shapes unchanged, but can change orientation (directed or undirected).

Specified by:

isIsometry in interface AffineTransform2D

Overrides:

isIsometry in class AbstractAffineTransform2D

Returns:

true in case of isometry.

isDirect

public boolean isDirect()

Description copied from interface: AffineTransform2D

Check if the transform is direct, i.e. it preserves the orientation of transformed shapes.

Specified by:

isDirect in interface AffineTransform2D

Specified by:

isDirect in interface Isometry2D

Overrides:

isDirect in class AbstractAffineTransform2D

Returns:

true if transform is direct.

isIdentity

public boolean isIdentity()

Description copied from interface: AffineTransform2D

Check if the transform is equivalent to the identity transform.

Specified by:

isIdentity in interface AffineTransform2D

Overrides:

isIdentity in class AbstractAffineTransform2D

Returns:

true if the transform is identity