Matrix2f

Kotlin |Java

open class Matrix2f

kotlin.Any
↳	android.renderscript.Matrix2f

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

Summary

Public constructors
`<init>()` Creates a new identity 2x2 matrix
`<init>(dataArray: FloatArray!)` Creates a new matrix and sets its values from the given parameter

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

Public constructors

<init>

Added in API level 11

Matrix2f()

Creates a new identity 2x2 matrix

<init>

Added in API level 11

Matrix2f(dataArray: FloatArray!)

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

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

Public methods

get

Added in API level 11

open fun get(
    x: Int, 
    y: Int
): Float

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

Return
`Float`	value in the yth row and xth column

getArray

Added in API level 11

open fun getArray(): FloatArray!

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

Return
`FloatArray!`	internal array representing the matrix

load

Added in API level 11

open fun load(src: Matrix2f!): Unit

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

open fun loadIdentity(): Unit

Sets the matrix values to identity

loadMultiply

Added in API level 11

open fun loadMultiply(
    lhs: Matrix2f!, 
    rhs: Matrix2f!
): Unit

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

open fun loadRotate(rot: Float): Unit

Sets current values to be a rotation matrix of given angle

Parameters
`rot`	Float: rotation angle

loadScale

Added in API level 11

open fun loadScale(
    x: Float, 
    y: Float
): Unit

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

open fun multiply(rhs: Matrix2f!): Unit

Post-multiplies the current matrix by a given parameter

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

rotate

Added in API level 11

open fun rotate(rot: Float): Unit

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

open fun scale(
    x: Float, 
    y: Float
): Unit

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

open fun set(
    x: Int, 
    y: Int, 
    v: Float
): Unit

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

transpose

Added in API level 11

open fun transpose(): Unit

Sets the current matrix to its transpose