Class b2Mat22

A 2-by-2 matrix. Stored in column-major order.

Hierarchy

b2Mat22

Index

Constructors

constructor

Properties

col1
col2

Methods

Constructors

constructor

new b2Mat22(): b2Mat22

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:233
Empty constructor

Returns b2Mat22

Properties

col1

col1: b2Vec2

Column 1

col2

col2: b2Vec2

Column 2

Methods

Abs

Abs(): void

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:243
Sets all internal matrix values to absolute values.

Returns void

AddM

AddM(m: b2Mat22): void

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:249
Adds the two 2x2 matricies together and stores the result in this matrix.

Parameters
- m: b2Mat22
  
  2x2 matrix to add.
Returns void

Copy

Copy(): b2Mat22

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:255
Creates a copy of the matrix.

Returns b2Mat22

Copy of this 2x2 matrix.

GetAngle

GetAngle(): number

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:280
Gets the rotation matrix angle. R(theta) = [ cos(theta) -sin(theta) ] [ sin(theta) cos(theta) ]

Returns number

The rotation matrix angle (theta).

GetInverse

GetInverse(out: b2Mat22): b2Mat22

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:287
Compute the inverse of this matrix, such that inv(A) A = identity.

Parameters
- out: b2Mat22
  
  Inverse matrix.
Returns b2Mat22

Inverse matrix.

Set

Set(angle: number): void

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:295
Sets the 2x2 rotation matrix from the given angle. R(theta) = [ cos(theta) -sin(theta) ] [ sin(theta) cos(theta) ]

Parameters
- angle: number
  
  Matrix angle (theta).
Returns void

SetIdentity

SetIdentity(): void

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:300
Sets the 2x2 matrix to identity.

Returns void

SetM

SetM(m: b2Mat22): void

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:306
Sets the 2x2 matrix from a 2x2 matrix.

Parameters
- m: b2Mat22
  
  2x2 matrix values.
Returns void

SetVV

SetVV(c1: b2Vec2, c2: b2Vec2): void

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:313
Sets the 2x2 matrix from 2 column vectors.

Parameters
- c1: b2Vec2
  
  Column 1 vector.
- c2: b2Vec2
  
  Column 2 vector.
Returns void

SetZero

SetZero(): void

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:318
Sets the 2x2 matrix to all zeros.

Returns void

Solve

Solve(out: b2Vec2, bX: number, bY: number): b2Vec2

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:327
TODO, has something to do with the determinant

Parameters
- out: b2Vec2
  
  Solved vector
- bX: number
- bY: number
Returns b2Vec2

Solved vector

Static FromAngle

FromAngle(angle: number): b2Mat22

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:264
Creates a rotation 2x2 matrix from the given angle. R(theta) = [ cos(theta) -sin(theta) ] [ sin(theta) cos(theta) ]

Parameters
- angle: number
  
  Matrix angle (theta).
Returns b2Mat22

2x2 matrix.

Static FromVV

FromVV(c1: b2Vec2, c2: b2Vec2): b2Mat22

- Defined in node_modules/@tawaship/box2dweb-module/types/box2dweb.d.ts:272
Creates a 2x2 matrix from two columns.

Parameters
- c1: b2Vec2
  
  Column 1 vector.
- c2: b2Vec2
  
  Column 2 vector.
Returns b2Mat22

2x2 matrix.

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