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Summary: Constants | Fields | Ctors | Methods | Inherited Methods

Transformation

public class Transformation
extends Object

java.lang.Object
↳	android.view.animation.Transformation

Defines the transformation to be applied at one point in time of an Animation.

Summary

Constants
`int`	`TYPE_ALPHA` Indicates a transformation that applies an alpha only (uses an identity matrix.)
`int`	`TYPE_BOTH` Indicates a transformation that applies an alpha and a matrix.
`int`	`TYPE_IDENTITY` Indicates a transformation that has no effect (alpha = 1 and identity matrix.)
`int`	`TYPE_MATRIX` Indicates a transformation that applies a matrix only (alpha = 1.)

Fields
`protected float`	`mAlpha`
`protected Matrix`	`mMatrix`
`protected int`	`mTransformationType`

Public constructors
`Transformation()` Creates a new transformation with alpha = 1 and the identity matrix.

Public methods
`void`	`clear()` Reset the transformation to a state that leaves the object being animated in an unmodified state.
`void`	`compose(Transformation t)` Apply this Transformation to an existing Transformation, e.g. apply a scale effect to something that has already been rotated.
`float`	`getAlpha()`
`Matrix`	`getMatrix()`
`int`	`getTransformationType()` Indicates the nature of this transformation.
`void`	`set(Transformation t)` Clones the specified transformation.
`void`	`setAlpha(float alpha)` Sets the degree of transparency
`void`	`setTransformationType(int transformationType)` Sets the transformation type.
`String`	`toShortString()` Return a string representation of the transformation in a compact form.
`String`	`toString()` Returns a string representation of the object.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

TYPE_ALPHA

public static final int TYPE_ALPHA

Indicates a transformation that applies an alpha only (uses an identity matrix.)

Constant Value: 1 (0x00000001)

TYPE_BOTH

public static final int TYPE_BOTH

Indicates a transformation that applies an alpha and a matrix.

Constant Value: 3 (0x00000003)

TYPE_IDENTITY

public static final int TYPE_IDENTITY

Indicates a transformation that has no effect (alpha = 1 and identity matrix.)

Constant Value: 0 (0x00000000)

TYPE_MATRIX

public static final int TYPE_MATRIX

Indicates a transformation that applies a matrix only (alpha = 1.)

Constant Value: 2 (0x00000002)

Fields

mAlpha

protected float mAlpha

mMatrix

protected Matrix mMatrix

mTransformationType

protected int mTransformationType

Public constructors

Transformation

public Transformation ()

Creates a new transformation with alpha = 1 and the identity matrix.

Public methods

clear

public void clear ()

Reset the transformation to a state that leaves the object being animated in an unmodified state. The transformation type is TYPE_BOTH by default.

compose

public void compose (Transformation t)

Apply this Transformation to an existing Transformation, e.g. apply a scale effect to something that has already been rotated.

getAlpha

public float getAlpha ()

Returns
`float`	The degree of transparency

getMatrix

public Matrix getMatrix ()

Returns
`Matrix`	The 3x3 Matrix representing the trnasformation to apply to the coordinates of the object being animated

getTransformationType

public int getTransformationType ()

Indicates the nature of this transformation.

Returns
`int`	`TYPE_ALPHA`, `TYPE_MATRIX`, `TYPE_BOTH` or `TYPE_IDENTITY`.

set

public void set (Transformation t)

Clones the specified transformation.

Parameters
`t`	`Transformation`: The transformation to clone.

setAlpha

public void setAlpha (float alpha)

Sets the degree of transparency

Parameters
`alpha`	`float`: 1.0 means fully opaqe and 0.0 means fully transparent Value is between 0.0 and 1.0 inclusive

setTransformationType

public void setTransformationType (int transformationType)

Sets the transformation type.

Parameters
`transformationType`	`int`: One of `TYPE_ALPHA`, `TYPE_MATRIX`, `TYPE_BOTH` or `TYPE_IDENTITY`.

toShortString

public String toShortString ()

Return a string representation of the transformation in a compact form.

Returns
`String`

toString

public String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())

Returns
`String`	a string representation of the object.

Interfaces

Classes

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Transformation

Summary

Constants

Fields

Public constructors

Public methods

Inherited methods

Constants

TYPE_ALPHA

TYPE_BOTH

TYPE_IDENTITY

TYPE_MATRIX

Fields

mAlpha

mMatrix

mTransformationType

Public constructors

Transformation

Public methods

clear

compose

getAlpha

getMatrix

getTransformationType

set

setAlpha

setTransformationType

toShortString

toString