Variable MathUtilsConst

Type declaration

• DEG2RAD: number

• RAD2DEG: number

• ceilPowerOfTwo:function

  • ceilPowerOfTwo(value): number

  • Parameters

    • value: number

    Returns number

• clamp:function

  • clamp(value, min, max): number

  • Parameters

    • value: number

    • min: number

    • max: number

    Returns number

• compare:function

  • compare(num1, num2, tol?): 0 | 1 | -1

  • Compare two numbers: If num1 is fuzzy equal to num2, return 0. If num1 is fuzzy bigger than num2, return 1. If num1 is fuzzy smaller than num2, return -1. If num1 or num2 is a NaN, throw exception.

    Parameters

    • num1: number

    • num2: number

    • Optional tol: number

    Returns 0 | 1 | -1

• damp:function

  • damp(x, y, lambda, dt): number

  • Parameters

    • x: number

    • y: number

    • lambda: number

    • dt: number

    Returns number

• degToRad:function

  • degToRad(degrees): number

  • Parameters

    • degrees: number

    Returns number

• euclideanModulo:function

  • euclideanModulo(n, m): number

  • Parameters

    • n: number

    • m: number

    Returns number

• floorPowerOfTwo:function

  • floorPowerOfTwo(value): number

  • Parameters

    • value: number

    Returns number

• generateMeshByQuad:function

  • generateMeshByQuad(quadPositions, widthSegments?, heightSegments?): {
        indices: number[];
        normals: number[];
        uvs: number[];
        vertices: number[];
    }

  • 根据四方点生成网格

    Parameters

    • quadPositions: Vector3[]

      四方点，左上角为起点，按照顺时针顺序

    • Optional widthSegments: number

      宽度分割段数

    • Optional heightSegments: number

      高度分割段数

    Returns {
        indices: number[];
        normals: number[];
        uvs: number[];
        vertices: number[];
    }

    • indices: number[]

    • normals: number[]

    • uvs: number[]

    • vertices: number[]

• generateUUID:function

  • generateUUID(): string

  • Returns string

• interpolation:function

  • interpolation(start, end, segments?): Vector3[]

  • 单向线性插值

    Parameters

    • start: Vector3

    • end: Vector3

    • Optional segments: number

    Returns Vector3[]

• isBigger:function

  • isBigger(num1, num2, tol?): boolean

  • Check whether num1 is bigger than num2 with specified tolerance. Global (default) tolerance will be used if tol is not provided.

    Parameters

    • num1: number

    • num2: number

    • Optional tol: number

    Returns boolean

• isBiggerOrEqual:function

  • isBiggerOrEqual(num1, num2, tol?): boolean

  • Check whether num1 is bigger than or equal to num2 with specified tolerance. Global (default) tolerance will be used if tol is not provided.

    Parameters

    • num1: number

    • num2: number

    • Optional tol: number

    Returns boolean

• isEqual:function

  • isEqual(num1, num2, tol?): boolean

  • Parameters

    • num1: number

    • num2: number

    • Optional tol: number

    Returns boolean

• isInRange:function

  • isInRange(value, min, max, minOpen?, maxOpen?, tol?): boolean

  • Check whether a number is in a range with specified tolerance. Global (default) tolerance will be used if tol is not provided.

    Parameters

    • value: number

      the value to be checked.

    • min: number

      the range's lower limit.

    • max: number

      the range's upper limit.

    • Optional minOpen: boolean

      whether the range's lower limit is open, default is false.

    • Optional maxOpen: boolean

      whether the range's upper limit is open, default is false.

    • Optional tol: number

    Returns boolean

• isPowerOfTwo:function

  • isPowerOfTwo(value): boolean

  • Parameters

    • value: number

    Returns boolean

• isSmaller:function

  • isSmaller(num1, num2, tol?): boolean

  • Check wether num1 is smaller than num2 with specified tolerance. Global (default) tolerance will be used if tol is not provided.

    Parameters

    • num1: number

    • num2: number

    • Optional tol: number

    Returns boolean

• isSmallerOrEqual:function

  • isSmallerOrEqual(num1, num2, tol?): boolean

  • Check whether num1 is smaller than or equal to num2 with specified tolerance. Global (default) tolerance will be used if tol is not provided.

    Parameters

    • num1: number

    • num2: number

    • Optional tol: number

    Returns boolean

• isZero:function

  • isZero(num, tol?): boolean

  • Parameters

    • num: number

    • Optional tol: number

    Returns boolean

• lerp:function

  • lerp(x, y, t): number

  • Parameters

    • x: number

    • y: number

    • t: number

    Returns number

• mapLinear:function

  • mapLinear(x, a1, a2, b1, b2): number

  • Parameters

    • x: number

    • a1: number

    • a2: number

    • b1: number

    • b2: number

    Returns number

• pingpong:function

  • pingpong(x, length?): number

  • Parameters

    • x: number

    • Optional length: number

    Returns number

• radToDeg:function

  • radToDeg(radians): number

  • Parameters

    • radians: number

    Returns number

• randFloat:function

  • randFloat(low, high): number

  • Parameters

    • low: number

    • high: number

    Returns number

• randFloatSpread:function

  • randFloatSpread(range): number

  • Parameters

    • range: number

    Returns number

• randInt:function

  • randInt(low, high): number

  • Parameters

    • low: number

    • high: number

    Returns number

• seededRandom:function

  • seededRandom(s): number

  • Parameters

    • s: number

    Returns number

• setQuaternionFromProperEuler:function

  • setQuaternionFromProperEuler(q, a, b, c, order): void

  • Parameters

    • q: Quaternion

    • a: number

    • b: number

    • c: number

    • order: string

    Returns void

• smootherstep:function

  • smootherstep(x, min, max): number

  • Parameters

    • x: number

    • min: number

    • max: number

    Returns number

• smoothstep:function

  • smoothstep(x, min, max): number

  • Parameters

    • x: number

    • min: number

    • max: number

    Returns number