Package com.reportmill.graphics

Class RMTransform

java.lang.Object

com.reportmill.base.RMObject

com.reportmill.graphics.RMTransform

All Implemented Interfaces:

RMArchiver.Archiving, Cloneable

public class RMTransform
extends RMObject

This class represents a simple 2D transform.

Field Summary

Fields

Modifier and Type	Field	Description
float	_a
float	_b
float	_c
float	_d
float	_tx
float	_ty
static final RMTransform	identity

Constructor Summary

Constructors

Constructor	Description
RMTransform()	Creates a new identity transform.
RMTransform(float a, float b, float c, float d, float tx, float ty)	Creates a transform initialized to given matrix components.
RMTransform(float dx, float dy, float angle, float sx, float sy, float skx, float sky)	Create a transform with translation, rotation, and skew.
RMTransform(float dx, float dy, float anAngle, float porx, float pory, float sx, float sy, float skx, float sky)	Creates a transform with translation and given rotation/skew about a point.
RMTransform(RMTransform aTransform)	Creates a new transform from a given transform.

Method Summary

Modifier and Type	Method	Description
float	a()	Returns the first component of the transform matrix.
AffineTransform	awt()	Returns AWT version of transform for use with Java2D (caching it if needed).
float	b()	Returns the second component of the transform matrix.
float	c()	Returns the third component of the transform matrix.
float	d()	Returns the fourth component of the transform matrix.
boolean	equals(Object anObj)	Standard equals implementation.
RMTransform	invert()	Inverts this transform (and returns this for convenience).
boolean	isIdentity()	Returns whether this transform is identity.
RMTransform	multiply(float a, float b, float c, float d, float tx, float ty)	Multiplies this transform by the given transform components (return this for convenience).
RMTransform	multiply(RMTransform aTransform)	Multiplies this transform by the given transform.
RMTransform	rotate(float anAngle)	Rotates this transform by given angle in degrees (returns this for convenience).
RMTransform	scale(float sx, float sy)	Scales this transform by given scale x and scale y (returns this for convenience).
RMTransform	skew(float aSkewX, float aSkewY)	Skews this transform by given skew x and skew y angles in degrees (returns this for convenience).
String	toString()	Returns a string representation of the transform.
RMPoint	transform(RMPoint aPoint)	Transforms the given point.
RMRect	transform(RMRect aRect)	Transforms the given rect.
RMSize	transform(RMSize aSize)	Transforms the given size.
RMSize	transformVector(RMSize aSize)	Transforms the given size as a vector (preserves negative values).
RMTransform	translate(float dx, float dy)	Translates this transform by given x & y (returns this for convenience).
float	tx()	Returns the x translation component of the transform matrix.
float	ty()	Returns the y translation component of the transform matrix.

Methods inherited from class com.reportmill.base.RMObject

clone, copy, didChange, didUndo, getAnimAttribute, getClassNameShort, initWithArchiver, undoClone, undoCopy, undoEquals

Methods inherited from class java.lang.Object

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

Field Details

_a

public float _a

_b

public float _b

_c

public float _c

_d

public float _d

_tx

public float _tx

_ty

public float _ty

identity

public static final RMTransform identity

Constructor Details

RMTransform

public RMTransform()

Creates a new identity transform.

RMTransform

public RMTransform(RMTransform aTransform)

Creates a new transform from a given transform.

RMTransform

public RMTransform(float a,
 float b,
 float c,
 float d,
 float tx,
 float ty)

Creates a transform initialized to given matrix components.

RMTransform

public RMTransform(float dx,
 float dy,
 float angle,
 float sx,
 float sy,
 float skx,
 float sky)

Create a transform with translation, rotation, and skew.

RMTransform

public RMTransform(float dx,
 float dy,
 float anAngle,
 float porx,
 float pory,
 float sx,
 float sy,
 float skx,
 float sky)

Creates a transform with translation and given rotation/skew about a point.

Method Details

a

public float a()

Returns the first component of the transform matrix.

b

public float b()

Returns the second component of the transform matrix.

c

public float c()

Returns the third component of the transform matrix.

d

public float d()

Returns the fourth component of the transform matrix.

tx

public float tx()

Returns the x translation component of the transform matrix.

ty

public float ty()

Returns the y translation component of the transform matrix.

isIdentity

public boolean isIdentity()

Returns whether this transform is identity.

translate

public RMTransform translate(float dx,
 float dy)

Translates this transform by given x & y (returns this for convenience).

rotate

public RMTransform rotate(float anAngle)

Rotates this transform by given angle in degrees (returns this for convenience).

scale

public RMTransform scale(float sx,
 float sy)

Scales this transform by given scale x and scale y (returns this for convenience).

skew

public RMTransform skew(float aSkewX,
 float aSkewY)

Skews this transform by given skew x and skew y angles in degrees (returns this for convenience).

multiply

public RMTransform multiply(RMTransform aTransform)

Multiplies this transform by the given transform.

multiply

public RMTransform multiply(float a,
 float b,
 float c,
 float d,
 float tx,
 float ty)

Multiplies this transform by the given transform components (return this for convenience).

invert

public RMTransform invert()

Inverts this transform (and returns this for convenience).

transform

public RMPoint transform(RMPoint aPoint)

Transforms the given point.

transform

public RMSize transform(RMSize aSize)

Transforms the given size.

transform

public RMRect transform(RMRect aRect)

Transforms the given rect.

transformVector

public RMSize transformVector(RMSize aSize)

Transforms the given size as a vector (preserves negative values).

equals

public boolean equals(Object anObj)

Standard equals implementation.

Overrides:

equals in class Object

awt

public AffineTransform awt()

Returns AWT version of transform for use with Java2D (caching it if needed).

toString

public String toString()

Returns a string representation of the transform.

Overrides:

toString in class Object