Added in API level 11

Summary: Ctors | Methods | Inherited Methods | [Expand All]

Matrix2f

public class Matrix2f
extends Object

java.lang.Object
↳	android.renderscript.Matrix2f

Class for exposing the native RenderScript rs_matrix2x2 type back to the Android system.

Summary

Public constructors
`Matrix2f()` Creates a new identity 2x2 matrix
`Matrix2f(float[] dataArray)` Creates a new matrix and sets its values from the given parameter

Public methods
`float`	`get(int x, int y)` Returns the value for a given row and column
`float[]`	`getArray()` Return a reference to the internal array representing matrix values.
`void`	`load(Matrix2f src)` Sets the values of the matrix to those of the parameter
`void`	`loadIdentity()` Sets the matrix values to identity
`void`	`loadMultiply(Matrix2f lhs, Matrix2f rhs)` Sets current values to be the result of multiplying two given matrices
`void`	`loadRotate(float rot)` Sets current values to be a rotation matrix of given angle
`void`	`loadScale(float x, float y)` Sets current values to be a scale matrix of given dimensions
`void`	`multiply(Matrix2f rhs)` Post-multiplies the current matrix by a given parameter
`void`	`rotate(float rot)` Modifies the current matrix by post-multiplying it with a rotation matrix of given angle
`void`	`scale(float x, float y)` Modifies the current matrix by post-multiplying it with a scale matrix of given dimensions
`void`	`set(int x, int y, float v)` Sets the value for a given row and column
`void`	`transpose()` Sets the current matrix to its transpose

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 millis, 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 millis)` 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.

Public constructors

Matrix2f

Added in API level 11

Matrix2f ()

Creates a new identity 2x2 matrix

Matrix2f

Added in API level 11

Matrix2f (float[] dataArray)

Creates a new matrix and sets its values from the given parameter

Parameters
`dataArray`	`float`: values to set the matrix to, must be 4 floats long

Public methods

get

Added in API level 11

float get (int x, 
                int y)

Returns the value for a given row and column

Parameters
`x`	`int`: column of the value to return
`y`	`int`: row of the value to return

Returns
`float`	value in the yth row and xth column

getArray

Added in API level 11

float[] getArray ()

Return a reference to the internal array representing matrix values. Modifying this array will also change the matrix

Returns
`float[]`	internal array representing the matrix

load

Added in API level 11

void load (Matrix2f src)

Sets the values of the matrix to those of the parameter

Parameters
`src`	`Matrix2f`: matrix to load the values from

loadIdentity

Added in API level 11

void loadIdentity ()

Sets the matrix values to identity

loadMultiply

Added in API level 11

void loadMultiply (Matrix2f lhs, 
                Matrix2f rhs)

Sets current values to be the result of multiplying two given matrices

Parameters
`lhs`	`Matrix2f`: left hand side matrix
`rhs`	`Matrix2f`: right hand side matrix

loadRotate

Added in API level 11

void loadRotate (float rot)

Sets current values to be a rotation matrix of given angle

Parameters
`rot`	`float`: rotation angle

loadScale

Added in API level 11

void loadScale (float x, 
                float y)

Sets current values to be a scale matrix of given dimensions

Parameters
`x`	`float`: scale component x
`y`	`float`: scale component y

multiply

Added in API level 11

void multiply (Matrix2f rhs)

Post-multiplies the current matrix by a given parameter

Parameters
`rhs`	`Matrix2f`: right hand side to multiply by

rotate

Added in API level 11

void rotate (float rot)

Modifies the current matrix by post-multiplying it with a rotation matrix of given angle

Parameters
`rot`	`float`: angle of rotation

scale

Added in API level 11

void scale (float x, 
                float y)

Modifies the current matrix by post-multiplying it with a scale matrix of given dimensions

Parameters
`x`	`float`: scale component x
`y`	`float`: scale component y

set

Added in API level 11

void set (int x, 
                int y, 
                float v)

Sets the value for a given row and column

Parameters
`x`	`int`: column of the value to set
`y`	`int`: row of the value to set
`v`	`float`

transpose

Added in API level 11

void transpose ()

Sets the current matrix to its transpose

Interfaces
- Allocation.OnBufferAvailableListener
Classes
Enums
Exceptions

Oct	NOV	Dec
	07
2015	2016	2017

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Matrix2f

Summary

Public constructors

Public methods

Inherited methods

Public constructors

Matrix2f

Matrix2f

Public methods

get

getArray

load

loadIdentity

loadMultiply

loadRotate

loadScale

multiply

rotate

scale

set

transpose

Interfaces

Classes

Enums

Exceptions