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

Added in API level 11

public class

Matrix2f

extends Object

java.lang.Object
↳	android.renderscript.Matrix2f

Class Overview

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

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Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

Public Constructors

public Matrix2f ()

Added in API level 11

Creates a new identity 2x2 matrix

public Matrix2f (float[] dataArray)

Added in API level 11

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

Parameters

dataArray	values to set the matrix to, must be 4 floats long

Public Methods

public float get (int x, int y)

Added in API level 11

Returns the value for a given row and column

Parameters

x	column of the value to return
y	row of the value to return

Returns

value in the yth row and xth column

public float[] getArray ()

Added in API level 11

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

Returns

internal array representing the matrix

public void load (Matrix2f src)

Added in API level 11

Sets the values of the matrix to those of the parameter

Parameters

src	matrix to load the values from

public void loadIdentity ()

Added in API level 11

Sets the matrix values to identity

public void loadMultiply (Matrix2f lhs, Matrix2f rhs)

Added in API level 11

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

Parameters

lhs	left hand side matrix
rhs	right hand side matrix

public void loadRotate (float rot)

Added in API level 11

Sets current values to be a rotation matrix of given angle

Parameters

rot	rotation angle

public void loadScale (float x, float y)

Added in API level 11

Sets current values to be a scale matrix of given dimensions

Parameters

x	scale component x
y	scale component y

public void multiply (Matrix2f rhs)

Added in API level 11

Post-multiplies the current matrix by a given parameter

Parameters

rhs	right hand side to multiply by

public void rotate (float rot)

Added in API level 11

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

Parameters

rot	angle of rotation

public void scale (float x, float y)

Added in API level 11

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

Parameters

x	scale component x
y	scale component y

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

Added in API level 11

Sets the value for a given row and column

Parameters

x	column of the value to set
y	row of the value to set

public void transpose ()

Added in API level 11

Sets the current matrix to its transpose

Results

Classes

Enums

Exceptions

Matrix2f

Class Overview

Summary

Public Constructors

public Matrix2f ()

public Matrix2f (float[] dataArray)

Parameters

Public Methods

public float get (int x, int y)

Parameters

Returns

public float[] getArray ()

Returns

public void load (Matrix2f src)

Parameters

public void loadIdentity ()

public void loadMultiply (Matrix2f lhs, Matrix2f rhs)

Parameters

public void loadRotate (float rot)

Parameters

public void loadScale (float x, float y)

Parameters

public void multiply (Matrix2f rhs)

Parameters

public void rotate (float rot)

Parameters

public void scale (float x, float y)

Parameters

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

Parameters

public void transpose ()