Class b2Math

constructor

• new b2Math(): b2Math

• Returns b2Math

Staticb2Mat22_identity

Staticb2Transform_identity

Staticb2Vec2_zero

StaticAbs

• Abs(a: number): number

• Creates an ABS number.

  Parameters

  • a: number

    Number to ABS.

  Returns number

  Absolute value of a.

StaticAbsM

• AbsM(A: b2Mat22): b2Mat22

• Creates an ABS matrix.

  Parameters

  • A: b2Mat22

    Matrix to ABS all values.

  Returns b2Mat22

  Matrix with all positive values.

StaticAbsV

• AbsV(a: b2Vec2): b2Vec2

• Creates an ABS vector.

  Parameters

  • a: b2Vec2

    Vector to ABS all values.

  Returns b2Vec2

  Vector with all positive values.

StaticAddMM

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

• Parameters

  • A: b2Mat22
  • B: b2Mat22

  Returns b2Mat22

StaticAddVV

• AddVV(a: b2Vec2, b: b2Vec2): b2Vec2

• Adds two vectors.

  Parameters

  • a: b2Vec2

    First vector.
  • b: b2Vec2

    Second vector.

  Returns b2Vec2

  a + b.

StaticClamp

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

• 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.

StaticClampV

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

• 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.

StaticCrossFV

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

• 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.

StaticCrossVF

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

• 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.

StaticCrossVV

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

• 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.

StaticDistance

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

• Calculates the distance between two vectors.

  Parameters

  • a: b2Vec2

    First vector.
  • b: b2Vec2

    Second vector.

  Returns number

  Distance between a and b.

StaticDistanceSquared

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

• Calculates the squared distance between two vectors.

  Parameters

  • a: b2Vec2

    First vector.
  • b: b2Vec2

    Second vector.

  Returns number

  dist^2 between a and b.

StaticDot

• Dot(a: b2Vec2, b: b2Vec2): number

• 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.

StaticIsPowerOfTwo

• IsPowerOfTwo(x: number): boolean

• 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.

StaticIsValid

• IsValid(x: number): boolean

• 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.

StaticMax

• Max(a: number, b: number): number

• Determines the max number.

  Parameters

  • a: number

    First number.
  • b: number

    Second number.

  Returns number

  a or b depending on which is the maximum.

StaticMaxV

• MaxV(a: b2Vec2, b: b2Vec2): b2Vec2

• Determines the max vector.

  Parameters

  • a: b2Vec2

    First vector.
  • b: b2Vec2

    Second vector.

  Returns b2Vec2

  a or b depending on which is the maximum.

StaticMin

• Min(a: number, b: number): number

• Determines the minimum number.

  Parameters

  • a: number

    First number.
  • b: number

    Second number.

  Returns number

  a or b depending on which is the minimum.

StaticMinV

• MinV(a: b2Vec2, b: b2Vec2): b2Vec2

• Determines the minimum vector.

  Parameters

  • a: b2Vec2

    First vector.
  • b: b2Vec2

    Second vector.

  Returns b2Vec2

  a or b depending on which is the minimum.

StaticMulFV

• MulFV(s: number, a: b2Vec2): b2Vec2

• Parameters

  • s: number
  • a: b2Vec2

  Returns b2Vec2

StaticMulMM

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

• Parameters

  • A: b2Mat22
  • B: b2Mat22

  Returns b2Mat22

StaticMulMV

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

• Multiply matrix and vector.

  Parameters

  • A: b2Mat22

    Matrix.
  • v: b2Vec2

    Vector.

  Returns b2Vec2

  Result.

StaticMulTMM

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

• Parameters

  • A: b2Mat22
  • B: b2Mat22

  Returns b2Mat22

StaticMulTMV

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

• Parameters

  • A: b2Mat22
  • v: b2Vec2

  Returns b2Vec2

StaticMulX

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

• Parameters

  • T: b2Transform
  • v: b2Vec2

  Returns b2Vec2

StaticMulXT

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

• Parameters

  • T: b2Transform
  • v: b2Vec2

  Returns b2Vec2

StaticNextPowerOfTwo

• NextPowerOfTwo(x: number): number

• 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.

StaticRandom

• Random(): number

• Generates a random number.

  Returns number

StaticRandomRange

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

• 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.

StaticSubtractVV

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

• Subtracts two vectors.

  Parameters

  • a: b2Vec2

    First vector.
  • b: b2Vec2

    Second vector.

  Returns b2Vec2

  a - b.

StaticSwap

• Swap(a: any, b: any): void

• Swaps a and b objects.

  Parameters

  • a: any

    a -> b.
  • b: any

    b -> a.

  Returns void