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Matrix4f

public class Matrix4f
extends Object

java.lang.Object
↳	android.support.v8.renderscript.Matrix4f

Class for exposing the native RenderScript rs_matrix4x4 type back to the Android system.

Summary

Public constructors
`Matrix4f()` Creates a new identity 4x4 matrix
`Matrix4f(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.
`boolean`	`inverse()` Sets the current matrix to its inverse
`boolean`	`inverseTranspose()` Sets the current matrix to its inverse transpose
`void`	`load(Matrix4f src)` Sets the values of the matrix to those of the parameter
`void`	`loadFrustum(float l, float r, float b, float t, float n, float f)` Sets current values to be a perspective projection matrix
`void`	`loadIdentity()` Sets the matrix values to identity
`void`	`loadMultiply(Matrix4f lhs, Matrix4f rhs)` Sets current values to be the result of multiplying two given matrices
`void`	`loadOrtho(float l, float r, float b, float t, float n, float f)` Set current values to be an orthographic projection matrix
`void`	`loadOrthoWindow(int w, int h)` Set current values to be an orthographic projection matrix with the right and bottom clipping planes set to the given values.
`void`	`loadPerspective(float fovy, float aspect, float near, float far)` Sets current values to be a perspective projection matrix
`void`	`loadProjectionNormalized(int w, int h)` Helper function to set the current values to a perspective projection matrix with aspect ratio defined by the parameters and (near, far), (bottom, top) mapping to (-1, 1) at z = 0
`void`	`loadRotate(float rot, float x, float y, float z)` Sets current values to be a rotation matrix of certain angle about a given axis
`void`	`loadScale(float x, float y, float z)` Sets current values to be a scale matrix of given dimensions
`void`	`loadTranslate(float x, float y, float z)` Sets current values to be a translation matrix of given dimensions
`void`	`multiply(Matrix4f rhs)` Post-multiplies the current matrix by a given parameter
`void`	`rotate(float rot, float x, float y, float z)` Modifies the current matrix by post-multiplying it with a rotation matrix of certain angle about a given axis
`void`	`scale(float x, float y, float z)` 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`	`translate(float x, float y, float z)` Modifies the current matrix by post-multiplying it with a translation matrix of given dimensions
`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

Matrix4f

Matrix4f ()

Creates a new identity 4x4 matrix

Matrix4f

Matrix4f (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 16 floats long

Public methods

get

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

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

inverse

boolean inverse ()

Sets the current matrix to its inverse

Returns
`boolean`

inverseTranspose

boolean inverseTranspose ()

Sets the current matrix to its inverse transpose

Returns
`boolean`

load

void load (Matrix4f src)

Sets the values of the matrix to those of the parameter

Parameters
`src`	`Matrix4f`: matrix to load the values from

loadFrustum

void loadFrustum (float l, 
                float r, 
                float b, 
                float t, 
                float n, 
                float f)

Sets current values to be a perspective projection matrix

Parameters
`l`	`float`: location of the left vertical clipping plane
`r`	`float`: location of the right vertical clipping plane
`b`	`float`: location of the bottom horizontal clipping plane
`t`	`float`: location of the top horizontal clipping plane
`n`	`float`: location of the near clipping plane, must be positive
`f`	`float`: location of the far clipping plane, must be positive

loadIdentity

void loadIdentity ()

Sets the matrix values to identity

loadMultiply

void loadMultiply (Matrix4f lhs, 
                Matrix4f rhs)

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

Parameters
`lhs`	`Matrix4f`: left hand side matrix
`rhs`	`Matrix4f`: right hand side matrix

loadOrtho

void loadOrtho (float l, 
                float r, 
                float b, 
                float t, 
                float n, 
                float f)

Set current values to be an orthographic projection matrix

Parameters
`l`	`float`: location of the left vertical clipping plane
`r`	`float`: location of the right vertical clipping plane
`b`	`float`: location of the bottom horizontal clipping plane
`t`	`float`: location of the top horizontal clipping plane
`n`	`float`: location of the near clipping plane
`f`	`float`: location of the far clipping plane

loadOrthoWindow

void loadOrthoWindow (int w, 
                int h)

Set current values to be an orthographic projection matrix with the right and bottom clipping planes set to the given values. Left and top clipping planes are set to 0. Near and far are set to -1, 1 respectively

Parameters
`w`	`int`: location of the right vertical clipping plane
`h`	`int`: location of the bottom horizontal clipping plane

loadPerspective

void loadPerspective (float fovy, 
                float aspect, 
                float near, 
                float far)

Sets current values to be a perspective projection matrix

Parameters
`fovy`	`float`: vertical field of view angle in degrees
`aspect`	`float`: aspect ratio of the screen
`near`	`float`: near cliping plane, must be positive
`far`	`float`: far clipping plane, must be positive

loadProjectionNormalized

void loadProjectionNormalized (int w, 
                int h)

Helper function to set the current values to a perspective projection matrix with aspect ratio defined by the parameters and (near, far), (bottom, top) mapping to (-1, 1) at z = 0

Parameters
`w`	`int`: screen width
`h`	`int`: screen height

loadRotate

void loadRotate (float rot, 
                float x, 
                float y, 
                float z)

Sets current values to be a rotation matrix of certain angle about a given axis

Parameters
`rot`	`float`: angle of rotation
`x`	`float`: rotation axis x
`y`	`float`: rotation axis y
`z`	`float`: rotation axis z

loadScale

void loadScale (float x, 
                float y, 
                float z)

Sets current values to be a scale matrix of given dimensions

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

loadTranslate

void loadTranslate (float x, 
                float y, 
                float z)

Sets current values to be a translation matrix of given dimensions

Parameters
`x`	`float`: translation component x
`y`	`float`: translation component y
`z`	`float`: translation component z

multiply

void multiply (Matrix4f rhs)

Post-multiplies the current matrix by a given parameter

Parameters
`rhs`	`Matrix4f`: right hand side to multiply by

rotate

void rotate (float rot, 
                float x, 
                float y, 
                float z)

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

Parameters
`rot`	`float`: angle of rotation
`x`	`float`: rotation axis x
`y`	`float`: rotation axis y
`z`	`float`: rotation axis z

scale

void scale (float x, 
                float y, 
                float z)

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
`z`	`float`: scale component z

set

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`

translate

void translate (float x, 
                float y, 
                float z)

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

Parameters
`x`	`float`: translation component x
`y`	`float`: translation component y
`z`	`float`: translation component z

transpose

void transpose ()

Sets the current matrix to its transpose

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Matrix4f

Summary

Public constructors

Public methods

Inherited methods

Public constructors

Matrix4f

Matrix4f

Public methods

get

getArray

inverse

inverseTranspose

load

loadFrustum

loadIdentity

loadMultiply

loadOrtho

loadOrthoWindow

loadPerspective

loadProjectionNormalized

loadRotate

loadScale

loadTranslate

multiply

rotate

scale

set

translate

transpose