Class b2Math

Math utility functions.

Hierarchy

b2Math

Index

Constructors

constructor

Properties

Constructors

constructor

new b2Math(): b2Math

Returns b2Math

Properties

Static b2Mat22_identity

b2Mat22_identity: b2Mat22

Global instance of a 2x2 identity matrix. Use as read-only.

Static b2Transform_identity

b2Transform_identity: b2Transform

Global instance of an identity transform. Use as read-only.

Static b2Vec2_zero

b2Vec2_zero: b2Vec2

Global instance of a zero'ed vector. Use as read-only.

Methods

Static Abs

Abs(a: number): number

- Defined in typings/box2dweb.d.ts:575
Creates an ABS number.

Parameters
- a: number
  
  Number to ABS.
Returns number
Absolute value of a.

Static AbsM

AbsM(A: b2Mat22): b2Mat22

- Defined in typings/box2dweb.d.ts:589
Creates an ABS matrix.

Parameters
- A: b2Mat22
  
  Matrix to ABS all values.
Returns b2Mat22
Matrix with all positive values.

Static AbsV

AbsV(a: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:582
Creates an ABS vector.

Parameters
- a: b2Vec2
  
  Vector to ABS all values.
Returns b2Vec2
Vector with all positive values.

Static AddMM

AddMM(A: b2Mat22, B: b2Mat22): b2Mat22

- Defined in typings/box2dweb.d.ts:552
Parameters
- A: b2Mat22
- B: b2Mat22
Returns b2Mat22

Static AddVV

AddVV(a: b2Vec2, b: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:512
Adds two vectors.

Parameters
- a: b2Vec2
  
  First vector.
- b: b2Vec2
  
  Second vector.
Returns b2Vec2
a + b.

Static Clamp

Clamp(a: number, low: number, high: number): number

- Defined in typings/box2dweb.d.ts:630
Clamp a number to the range of low to high.

Parameters
- a: number
  
  Number to clamp.
- low: number
  
  Low range.
- high: number
  
  High range.
Returns number
Number a clamped to range of low to high.

Static ClampV

ClampV(a: b2Vec2, low: b2Vec2, high: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:639
Clamps a vector to the range of low to high.

Parameters
- a: b2Vec2
  
  Vector to clamp.
- low: b2Vec2
  
  Low range.
- high: b2Vec2
  
  High range.
Returns b2Vec2
Vector a clamped to range of low to high.

Static CrossFV

CrossFV(s: number, a: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:472
Cross product of s and vector 2.

Parameters
- s: number
  
  s value.
- a: b2Vec2
  
  Vector 2 to use in cross product.
Returns b2Vec2
Cross product of s and a.

Static CrossVF

CrossVF(a: b2Vec2, s: number): b2Vec2

- Defined in typings/box2dweb.d.ts:464
Cross product of vector 2 and s.

Parameters
- a: b2Vec2
  
  Vector 2 to use in cross product.
- s: number
  
  s value.
Returns b2Vec2
Cross product of a and s.

Static CrossVV

CrossVV(a: b2Vec2, b: b2Vec2): number

- Defined in typings/box2dweb.d.ts:456
Cross product of two vector 2s.

Parameters
- a: b2Vec2
  
  Vector 2 to use in cross product.
- b: b2Vec2
  
  Vector 2 to use in cross product.
Returns number
Cross product of a and b.

Static Distance

Distance(a: b2Vec2, b: b2Vec2): number

- Defined in typings/box2dweb.d.ts:528
Calculates the distance between two vectors.

Parameters
- a: b2Vec2
  
  First vector.
- b: b2Vec2
  
  Second vector.
Returns number
Distance between a and b.

Static DistanceSquared

DistanceSquared(a: b2Vec2, b: b2Vec2): number

- Defined in typings/box2dweb.d.ts:536
Calculates the squared distance between two vectors.

Parameters
- a: b2Vec2
  
  First vector.
- b: b2Vec2
  
  Second vector.
Returns number
dist^2 between a and b.

Static Dot

Dot(a: b2Vec2, b: b2Vec2): number

- Defined in typings/box2dweb.d.ts:448
Dot product of two vector 2s.

Parameters
- a: b2Vec2
  
  Vector 2 to use in dot product.
- b: b2Vec2
  
  Vector 2 to use in dot product.
Returns number
Dot product of a and b.

Static IsPowerOfTwo

IsPowerOfTwo(x: number): boolean

- Defined in typings/box2dweb.d.ts:674
Check if a number is a power of 2.

Parameters
- x: number
  
  Number to check if it is a power of 2.
Returns boolean
True if x is a power of 2, otherwise false.

Static IsValid

IsValid(x: number): boolean

- Defined in typings/box2dweb.d.ts:440
Determines if a number is valid. A number is valid if it is finite.

Parameters
- x: number
  
  Number to check for validity.
Returns boolean
True if x is valid, otherwise false.

Static Max

Max(a: number, b: number): number

- Defined in typings/box2dweb.d.ts:613
Determines the max number.

Parameters
- a: number
  
  First number.
- b: number
  
  Second number.
Returns number
a or b depending on which is the maximum.

Static MaxV

MaxV(a: b2Vec2, b: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:621
Determines the max vector.

Parameters
- a: b2Vec2
  
  First vector.
- b: b2Vec2
  
  Second vector.
Returns b2Vec2
a or b depending on which is the maximum.

Static Min

Min(a: number, b: number): number

- Defined in typings/box2dweb.d.ts:597
Determines the minimum number.

Parameters
- a: number
  
  First number.
- b: number
  
  Second number.
Returns number
a or b depending on which is the minimum.

Static MinV

MinV(a: b2Vec2, b: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:605
Determines the minimum vector.

Parameters
- a: b2Vec2
  
  First vector.
- b: b2Vec2
  
  Second vector.
Returns b2Vec2
a or b depending on which is the minimum.

Static MulFV

MulFV(s: number, a: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:544
Parameters
- s: number
- a: b2Vec2
Returns b2Vec2

Static MulMM

MulMM(A: b2Mat22, B: b2Mat22): b2Mat22

- Defined in typings/box2dweb.d.ts:560
Parameters
- A: b2Mat22
- B: b2Mat22
Returns b2Mat22

Static MulMV

MulMV(A: b2Mat22, v: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:480
Multiply matrix and vector.

Parameters
- A: b2Mat22
  
  Matrix.
- v: b2Vec2
  
  Vector.
Returns b2Vec2
Result.

Static MulTMM

MulTMM(A: b2Mat22, B: b2Mat22): b2Mat22

- Defined in typings/box2dweb.d.ts:568
Parameters
- A: b2Mat22
- B: b2Mat22
Returns b2Mat22

Static MulTMV

MulTMV(A: b2Mat22, v: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:488
Parameters
- A: b2Mat22
- v: b2Vec2
Returns b2Vec2

Static MulX

MulX(T: b2Transform, v: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:496
Parameters
- T: b2Transform
- v: b2Vec2
Returns b2Vec2

Static MulXT

MulXT(T: b2Transform, v: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:504
Parameters
- T: b2Transform
- v: b2Vec2
Returns b2Vec2

Static NextPowerOfTwo

NextPowerOfTwo(x: number): number

- Defined in typings/box2dweb.d.ts:667
Calculates the next power of 2 after the given number.

Parameters
- x: number
  
  Number to start search for the next power of 2.
Returns number
The next number that is a power of 2.

Static Random

Random(): number

- Defined in typings/box2dweb.d.ts:652
Generates a random number.

Returns number

Static RandomRange

RandomRange(lo: number, hi: number): number

- Defined in typings/box2dweb.d.ts:660
Returns a random number between lo and hi.

Parameters
- lo: number
  
  Lowest random number.
- hi: number
  
  Highest random number.
Returns number
Number between lo and hi.

Static SubtractVV

SubtractVV(a: b2Vec2, b: b2Vec2): b2Vec2

- Defined in typings/box2dweb.d.ts:520
Subtracts two vectors.

Parameters
- a: b2Vec2
  
  First vector.
- b: b2Vec2
  
  Second vector.
Returns b2Vec2
a - b.

Static Swap

Swap(a: any, b: any): void

- Defined in typings/box2dweb.d.ts:646
Swaps a and b objects.

Parameters
- a: any
  
  a -> b.
- b: any
  
  b -> a.
Returns void

Generated using TypeDoc