Class Mat3

Basic 3x3 matrix class used for matrix calculations.

Note that like three.js, the constructor and set method take arguments in row-major order, while internally they are stored in the elements array in column-major order.

See

Index

Constructors

constructor

new Mat3(elements?): Mat3
Mat3 constructor
Parameters
- elements: Float32Array = ...
  initial array to use, default to identity matrix
Returns Mat3
- Defined in src/math/Mat3.ts:22

Properties

type

type: string

The type of the Mat3

elements

elements: Float32Array

Our matrix array

Methods

set

set(n11, n12, n13, n21, n22, n23, n31, n32, n33): Mat3
Sets the matrix from 9 numbers
Parameters
- n11: number
  number
- n12: number
  number
- n13: number
  number
- n21: number
  number
- n22: number
  number
- n23: number
  number
- n31: number
  number
- n32: number
  number
- n33: number
  number
Returns Mat3
- this Mat3 after being set
- Defined in src/math/Mat3.ts:45

identity

identity(): Mat3
Sets the Mat3 to an identity matrix

Returns Mat3
- this Mat3 after being set
- Defined in src/math/Mat3.ts:75

setFromArray

setFromArray(array?): Mat3
Sets the Mat3 values from an array
Parameters
- array: number[] | Float32Array = ...
  array to use
Returns Mat3
- this Mat3 after being set
- Defined in src/math/Mat3.ts:87

copy

copy(matrix?): Mat3
Copy another Mat3
Parameters
- matrix: Mat3 = ...
  matrix to copy
Returns Mat3
- this Mat3 after being set
- Defined in src/math/Mat3.ts:104

clone

clone(): Mat3
Clone a Mat3

Returns Mat3
- cloned Mat3
- Defined in src/math/Mat3.ts:123

setFromMat4

setFromMat4(matrix?): Mat3
Set a Mat3 from a Mat4.
Parameters
- matrix: Mat4 = ...
  Mat4 to use.
Returns Mat3
- this Mat3 after being set.
- Defined in src/math/Mat3.ts:132

multiply

multiply(matrix?): Mat3
Multiply this Mat3 with another Mat3
Parameters
- matrix: Mat3 = ...
  Mat3 to multiply with
Returns Mat3
- this Mat3 after multiplication
- Defined in src/math/Mat3.ts:145

premultiply

premultiply(matrix?): Mat3
Multiply another Mat3 with this Mat3
Parameters
- matrix: Mat3 = ...
  Mat3 to multiply with
Returns Mat3
- this Mat3 after multiplication
- Defined in src/math/Mat3.ts:154

multiplyMatrices

multiplyMatrices(a?, b?): Mat3
Multiply two Mat3
Parameters
- a: Mat3 = ...
  first Mat3
- b: Mat3 = ...
  second Mat3
Returns Mat3
- Mat3 resulting from the multiplication
- Defined in src/math/Mat3.ts:164

invert

invert(): Mat3
Invert this Mat3.

Returns Mat3
- this Mat3 after being inverted
- Defined in src/math/Mat3.ts:208

transpose

transpose(): Mat3
Transpose this Mat3.

Returns Mat3
- this Mat3 after being transposed
- Defined in src/math/Mat3.ts:247

getNormalMatrix

getNormalMatrix(matrix?): Mat3
Compute a normal Mat3 matrix from a Mat4 transformation matrix.
Parameters
- matrix: Mat4 = ...
  Mat4 transformation matrix
Returns Mat3
- this Mat3 after being inverted and transposed
- Defined in src/math/Mat3.ts:269

Class Mat3

See

Index

Constructors

Properties

Methods

Constructors

constructor

Parameters

elements: Float32Array = ...

Returns Mat3

Properties

type

elements

Methods

set

Parameters

n11: number

n12: number

n13: number

n21: number

n22: number

n23: number

n31: number

n32: number

n33: number

Returns Mat3

identity

Returns Mat3

setFromArray

Parameters

array: number[] | Float32Array = ...

Returns Mat3

copy

Parameters

matrix: Mat3 = ...

Returns Mat3

clone

Returns Mat3

setFromMat4

Parameters

matrix: Mat4 = ...

Returns Mat3

multiply

Parameters

matrix: Mat3 = ...

Returns Mat3

premultiply

Parameters

matrix: Mat3 = ...

Returns Mat3

multiplyMatrices

Parameters

a: Mat3 = ...

b: Mat3 = ...

Returns Mat3

invert

Returns Mat3

transpose

Returns Mat3

getNormalMatrix

Parameters

matrix: Mat4 = ...

Returns Mat3

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