javafx.scene.transform

Class Shear

java.lang.Object

javafx.scene.transform.Transform

javafx.scene.transform.Shear

All Implemented Interfaces:

java.lang.Cloneable

public class Shear
extends Transform

This class represents an Affine object that shears coordinates by the specified multipliers. The matrix representing the shearing transformation around a pivot point (pivotX, pivotY) with multiplication factors x and y is as follows:

              [   1   x   0   -x*pivotY   ]
              [   y   1   0   -y*pivotX   ]
              [   0   0   1       0       ]
 

For example:

 Text text = new Text("Using Shear for pseudo-italic font");
 text.setX(20);
 text.setY(50);
 text.setFont(new Font(20));

 text.getTransforms().add(new Shear(-0.35, 0));
 

Since:

JavaFX 2.0

Property Summary

Type	Property and Description
DoubleProperty	pivotX Defines the X coordinate of the shear pivot point.
DoubleProperty	pivotY Defines the Y coordinate of the shear pivot point.
DoubleProperty	x Defines the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate.
DoubleProperty	y Defines the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate.

Properties inherited from class javafx.scene.transform.Transform

identityProperty, onTransformChangedProperty, type2DProperty

Nested Class Summary

Nested classes/interfaces inherited from class javafx.scene.transform.Transform

Transform.ImmutableTransform

Field Summary

Fields

Modifier and Type	Field and Description
private DoubleProperty	pivotX Defines the X coordinate of the shear pivot point.
private DoubleProperty	pivotY Defines the Y coordinate of the shear pivot point.
private DoubleProperty	x Defines the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate.
private DoubleProperty	y Defines the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate.

Constructor Summary

Constructors

Constructor and Description
Shear() Creates a default Shear (identity).
Shear(double x, double y) Creates a new instance of Shear.
Shear(double x, double y, double pivotX, double pivotY) Creates a new instance of Shear with pivot.

Method Summary

Modifier and Type	Method and Description
(package private) void	appendTo(Affine a) Visitor from Affine class which provides an efficient append operation for the subclasses.
(package private) void	apply(Affine3D trans)
Shear	clone() Returns a deep copy of this transform.
(package private) boolean	computeIs2D() Computes if this transform is currently a 2D transform (has no effect in the direction of Z axis).
(package private) boolean	computeIsIdentity() Computes if this transform is currently an identity (has no effect in any direction).
Transform	createConcatenation(Transform transform) Returns the concatenation of this transform and the specified transform.
Transform	createInverse() Returns the inverse transform of this transform.
Point2D	deltaTransform(double x, double y) Transforms the relative magnitude vector by this transform.
Point3D	deltaTransform(double x, double y, double z) Transforms the relative magnitude vector by this transform.
(package private) BaseTransform	derive(BaseTransform trans)
(package private) void	fill2DArray(double[] array) Core of the toArray implementation for the 2D case.
(package private) void	fill3DArray(double[] array) Core of the toArray implementation for the 3D case.
double	getMxy() Gets the XY coordinate element of the 3x4 matrix.
double	getMyx() Gets the YX coordinate element of the 3x4 matrix.
double	getPivotX() Gets the value of the property pivotX.
double	getPivotY() Gets the value of the property pivotY.
double	getTx() Gets the X coordinate translation element of the 3x4 matrix.
double	getTy() Gets the Y coordinate translation element of the 3x4 matrix.
double	getX() Gets the value of the property x.
double	getY() Gets the value of the property y.
Point2D	inverseDeltaTransform(double x, double y) Transforms the relative magnitude vector by the inverse of this transform.
Point3D	inverseDeltaTransform(double x, double y, double z) Transforms the relative magnitude vector by the inverse of this transform.
Point2D	inverseTransform(double x, double y) Transforms the specified point by the inverse of this transform.
Point3D	inverseTransform(double x, double y, double z) Transforms the specified point by the inverse of this transform.
(package private) void	inverseTransform2DPointsImpl(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts) Core of the inverseTransform2DPoints method.
(package private) void	inverseTransform3DPointsImpl(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts) Core of the inverseTransform3DPoints method.
DoubleProperty	pivotXProperty() Defines the X coordinate of the shear pivot point.
DoubleProperty	pivotYProperty() Defines the Y coordinate of the shear pivot point.
(package private) void	prependTo(Affine a) Visitor from Affine class which provides an efficient prepend operation for the subclasses.
void	setPivotX(double value) Sets the value of the property pivotX.
void	setPivotY(double value) Sets the value of the property pivotY.
void	setX(double value) Sets the value of the property x.
void	setY(double value) Sets the value of the property y.
java.lang.String	toString() Returns a string representation of this Shear object.
Point2D	transform(double x, double y) Transforms the specified point by this transform.
Point3D	transform(double x, double y, double z) Transforms the specified point by this transform.
(package private) void	transform2DPointsImpl(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts) Core of the transform2DPoints method.
(package private) void	transform3DPointsImpl(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts) Core of the transform3DPoints method.
(package private) void	validate() Needed for the proper delivery of the TransformChangedEvent.
DoubleProperty	xProperty() Defines the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate.
DoubleProperty	yProperty() Defines the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate.

Methods inherited from class javafx.scene.transform.Transform

add, addEventFilter, addEventHandler, affine, affine, buildEventDispatchChain, checkRequestedMAT, clearInverseCache, column, column, createImmutableTransform, createImmutableTransform, createImmutableTransform, createImmutableTransform, deltaTransform, deltaTransform, determinant, ensureCanTransform2DPoint, getElement, getMxx, getMxz, getMyy, getMyz, getMzx, getMzy, getMzz, getOnTransformChanged, getTz, identityProperty, inverseDeltaTransform, inverseDeltaTransform, inverseTransform, inverseTransform, inverseTransform, inverseTransform2DPoints, inverseTransform3DPoints, isIdentity, isType2D, onTransformChangedProperty, remove, removeEventFilter, removeEventHandler, rotate, row, row, scale, scale, setOnTransformChanged, shear, shear, similarTo, toArray, toArray, transform, transform, transform, transform2DPoints, transform3DPoints, transformChanged, translate, type2DProperty

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Property Detail

x

public final DoubleProperty xProperty

Defines the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate. Typical values are in the range -1 to 1, exclusive.

See Also:

getX(), setX(double)

y

public final DoubleProperty yProperty

Defines the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate. Typical values are in the range -1 to 1, exclusive.

See Also:

getY(), setY(double)

pivotX

public final DoubleProperty pivotXProperty

Defines the X coordinate of the shear pivot point.

See Also:

getPivotX(), setPivotX(double)

pivotY

public final DoubleProperty pivotYProperty

Defines the Y coordinate of the shear pivot point.

See Also:

getPivotY(), setPivotY(double)

Field Detail

x

private DoubleProperty x

Defines the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate. Typical values are in the range -1 to 1, exclusive.

y

private DoubleProperty y

Defines the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate. Typical values are in the range -1 to 1, exclusive.

pivotX

private DoubleProperty pivotX

Defines the X coordinate of the shear pivot point.

pivotY

private DoubleProperty pivotY

Defines the Y coordinate of the shear pivot point.

Constructor Detail

Shear

public Shear()

Creates a default Shear (identity).

Shear

public Shear(double x,
             double y)

Creates a new instance of Shear. The pivot point is set to (0,0)

Parameters:

x - the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate

y - the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate

Shear

public Shear(double x,
             double y,
             double pivotX,
             double pivotY)

Creates a new instance of Shear with pivot.

Parameters:

x - the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate

y - the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate

pivotX - the X coordinate of the shear pivot point

pivotY - the Y coordinate of the shear pivot point

Method Detail

setX

public final void setX(double value)

Sets the value of the property x.

getX

public final double getX()

Gets the value of the property x.

xProperty

public final DoubleProperty xProperty()

Defines the multiplier by which coordinates are shifted in the direction of the positive X axis as a factor of their Y coordinate. Typical values are in the range -1 to 1, exclusive.

See Also:

getX(), setX(double)

setY

public final void setY(double value)

Sets the value of the property y.

getY

public final double getY()

Gets the value of the property y.

yProperty

public final DoubleProperty yProperty()

Defines the multiplier by which coordinates are shifted in the direction of the positive Y axis as a factor of their X coordinate. Typical values are in the range -1 to 1, exclusive.

See Also:

getY(), setY(double)

setPivotX

public final void setPivotX(double value)

Sets the value of the property pivotX.

getPivotX

public final double getPivotX()

Gets the value of the property pivotX.

pivotXProperty

public final DoubleProperty pivotXProperty()

Defines the X coordinate of the shear pivot point.

See Also:

getPivotX(), setPivotX(double)

setPivotY

public final void setPivotY(double value)

Sets the value of the property pivotY.

getPivotY

public final double getPivotY()

Gets the value of the property pivotY.

pivotYProperty

public final DoubleProperty pivotYProperty()

Defines the Y coordinate of the shear pivot point.

See Also:

getPivotY(), setPivotY(double)

getMxy

public double getMxy()

Description copied from class: Transform

Gets the XY coordinate element of the 3x4 matrix.

Overrides:

getMxy in class Transform

Returns:

the XY coordinate element of the 3x4 matrix

getMyx

public double getMyx()

Description copied from class: Transform

Gets the YX coordinate element of the 3x4 matrix.

Overrides:

getMyx in class Transform

Returns:

the YX coordinate element of the 3x4 matrix

getTx

public double getTx()

Description copied from class: Transform

Gets the X coordinate translation element of the 3x4 matrix.

Overrides:

getTx in class Transform

Returns:

the X coordinate translation element of the 3x4 matrix

getTy

public double getTy()

Description copied from class: Transform

Gets the Y coordinate translation element of the 3x4 matrix.

Overrides:

getTy in class Transform

Returns:

the Y coordinate translation element of the 3x4 matrix

computeIs2D

boolean computeIs2D()

Description copied from class: Transform

Computes if this transform is currently a 2D transform (has no effect in the direction of Z axis). Used by the subclasses to effectively provide value of the type2D property.

Overrides:

computeIs2D in class Transform

Returns:

true if this transform is currently 2D-only

computeIsIdentity

boolean computeIsIdentity()

Description copied from class: Transform

Computes if this transform is currently an identity (has no effect in any direction). Used by the subclasses to effectively provide value of the identity property.

Overrides:

computeIsIdentity in class Transform

Returns:

true if this transform is currently an identity transform

fill2DArray

void fill2DArray(double[] array)

Description copied from class: Transform

Core of the toArray implementation for the 2D case. All of the checks has been made by the enclosing method as well as the constant elements filled, this method only fills the varying elements to the array. Used by subclasses to fill the elements efficiently.

Overrides:

fill2DArray in class Transform

Parameters:

array - array to be filled with the 6 2D elements

fill3DArray

void fill3DArray(double[] array)

Description copied from class: Transform

Core of the toArray implementation for the 3D case. All of the checks has been made by the enclosing method as well as the constant elements filled, this method only fills the varying elements to the array. Used by subclasses to fill the elements efficiently.

Overrides:

fill3DArray in class Transform

Parameters:

array - array to be filled with the 12 3D elements

createConcatenation

public Transform createConcatenation(Transform transform)

Description copied from class: Transform

Returns the concatenation of this transform and the specified transform. Applying the resulting transform to a node has the same effect as adding the two transforms to its getTransforms() list, this transform first and the specified transform second.

Overrides:

createConcatenation in class Transform

Parameters:

transform - transform to be concatenated with this transform

Returns:

The concatenated transform

createInverse

public Transform createInverse()

Description copied from class: Transform

Returns the inverse transform of this transform.

Overrides:

createInverse in class Transform

Returns:

the inverse transform

clone

public Shear clone()

Description copied from class: Transform

Returns a deep copy of this transform.

Overrides:

clone in class Transform

Returns:

a copy of this transform

transform

public Point2D transform(double x,
                         double y)

Description copied from class: Transform

Transforms the specified point by this transform. This method can be used only for 2D transforms.

Overrides:

transform in class Transform

Parameters:

x - the X coordinate of the point

y - the Y coordinate of the point

Returns:

the transformed point

transform

public Point3D transform(double x,
                         double y,
                         double z)

Description copied from class: Transform

Transforms the specified point by this transform.

Overrides:

transform in class Transform

Parameters:

x - the X coordinate of the point

y - the Y coordinate of the point

z - the Z coordinate of the point

Returns:

the transformed point

transform2DPointsImpl

void transform2DPointsImpl(double[] srcPts,
                           int srcOff,
                           double[] dstPts,
                           int dstOff,
                           int numPts)

Description copied from class: Transform

Core of the transform2DPoints method. All the checks has been performed and the care of the overlaps has been taken by the enclosing method, this method only transforms the points and fills them to the array. Used by the subclasses to perform the transform efficiently.

Overrides:

transform2DPointsImpl in class Transform

transform3DPointsImpl

void transform3DPointsImpl(double[] srcPts,
                           int srcOff,
                           double[] dstPts,
                           int dstOff,
                           int numPts)

Description copied from class: Transform

Core of the transform3DPoints method. All the checks has been performed and the care of the overlaps has been taken by the enclosing method, this method only transforms the points and fills them to the array. Used by the subclasses to perform the transform efficiently.

Overrides:

transform3DPointsImpl in class Transform

deltaTransform

public Point2D deltaTransform(double x,
                              double y)

Description copied from class: Transform

Transforms the relative magnitude vector by this transform. The vector is transformed without applying the translation components of the affine transformation matrix. This method can be used only for a 2D transform.

Overrides:

deltaTransform in class Transform

Parameters:

x - vector magnitude in the direction of the X axis

y - vector magnitude in the direction of the Y axis

Returns:

the transformed relative magnitude vector represented by a Point2D instance

deltaTransform

public Point3D deltaTransform(double x,
                              double y,
                              double z)

Description copied from class: Transform

Transforms the relative magnitude vector by this transform. The vector is transformed without applying the translation components of the affine transformation matrix.

Overrides:

deltaTransform in class Transform

Parameters:

x - vector magnitude in the direction of the X axis

y - vector magnitude in the direction of the Y axis

z - vector magnitude in the direction of the Z axis

Returns:

the transformed relative magnitude vector represented by a Point3D instance

inverseTransform

public Point2D inverseTransform(double x,
                                double y)
                         throws NonInvertibleTransformException

Description copied from class: Transform

Transforms the specified point by the inverse of this transform. This method can be used only for 2D transforms.

Overrides:

inverseTransform in class Transform

Parameters:

x - the X coordinate of the point

y - the Y coordinate of the point

Returns:

the inversely transformed point

Throws:

NonInvertibleTransformException - if this transform cannot be inverted

inverseTransform

public Point3D inverseTransform(double x,
                                double y,
                                double z)
                         throws NonInvertibleTransformException

Description copied from class: Transform

Transforms the specified point by the inverse of this transform.

Overrides:

inverseTransform in class Transform

Parameters:

x - the X coordinate of the point

y - the Y coordinate of the point

z - the Z coordinate of the point

Returns:

the inversely transformed point

Throws:

NonInvertibleTransformException - if this transform cannot be inverted

inverseTransform2DPointsImpl

void inverseTransform2DPointsImpl(double[] srcPts,
                                  int srcOff,
                                  double[] dstPts,
                                  int dstOff,
                                  int numPts)
                           throws NonInvertibleTransformException

Description copied from class: Transform

Core of the inverseTransform2DPoints method. All the checks has been performed and the care of the overlaps has been taken by the enclosing method, this method only transforms the points and fills them to the array. Used by the subclasses to perform the transform efficiently.

Overrides:

inverseTransform2DPointsImpl in class Transform

Throws:

NonInvertibleTransformException

inverseTransform3DPointsImpl

void inverseTransform3DPointsImpl(double[] srcPts,
                                  int srcOff,
                                  double[] dstPts,
                                  int dstOff,
                                  int numPts)
                           throws NonInvertibleTransformException

Description copied from class: Transform

Core of the inverseTransform3DPoints method. All the checks has been performed and the care of the overlaps has been taken by the enclosing method, this method only transforms the points and fills them to the array. Used by the subclasses to perform the transform efficiently.

Overrides:

inverseTransform3DPointsImpl in class Transform

Throws:

NonInvertibleTransformException

inverseDeltaTransform

public Point2D inverseDeltaTransform(double x,
                                     double y)
                              throws NonInvertibleTransformException

Description copied from class: Transform

Transforms the relative magnitude vector by the inverse of this transform. The vector is transformed without applying the translation components of the affine transformation matrix. This method can be used only for a 2D transform.

Overrides:

inverseDeltaTransform in class Transform

Parameters:

x - vector magnitude in the direction of the X axis

y - vector magnitude in the direction of the Y axis

Returns:

the inversely transformed relative magnitude vector represented by a Point2D instance

Throws:

NonInvertibleTransformException - if this transform cannot be inverted

inverseDeltaTransform

public Point3D inverseDeltaTransform(double x,
                                     double y,
                                     double z)
                              throws NonInvertibleTransformException

Description copied from class: Transform

Transforms the relative magnitude vector by the inverse of this transform. The vector is transformed without applying the translation components of the affine transformation matrix.

Overrides:

inverseDeltaTransform in class Transform

Parameters:

x - vector magnitude in the direction of the X axis

y - vector magnitude in the direction of the Y axis

z - vector magnitude in the direction of the Z axis

Returns:

the inversely transformed relative magnitude vector represented by a Point3D instance

Throws:

NonInvertibleTransformException - if this transform cannot be inverted

toString

public java.lang.String toString()

Returns a string representation of this Shear object.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this Shear object.

apply

void apply(Affine3D trans)

Specified by:

apply in class Transform

derive

BaseTransform derive(BaseTransform trans)

Specified by:

derive in class Transform

validate

void validate()

Description copied from class: Transform

Needed for the proper delivery of the TransformChangedEvent. If the members are invalid, the transformChanged() notification is not called and the event is not delivered. To avoid that we need to manually validate all properties. Subclasses validate their specific properties.

Overrides:

validate in class Transform

appendTo

void appendTo(Affine a)

Description copied from class: Transform

Visitor from Affine class which provides an efficient append operation for the subclasses.

Overrides:

appendTo in class Transform

Parameters:

a - Affine instance to append to

prependTo

void prependTo(Affine a)

Description copied from class: Transform

Visitor from Affine class which provides an efficient prepend operation for the subclasses.

Overrides:

prependTo in class Transform

Parameters:

a - Affine instance to prepend to