@orillusion/core

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Class: MathUtil

Defined in: src/math/MathUtil.ts:44

Built-in mathematical basic calculation factory function

Constructors

Constructor

new MathUtil(): MathUtil

Returns

MathUtil

Methods

clampf()

static clampf(value, min_inclusive, max_inclusive): number

Defined in: src/math/MathUtil.ts:107

Limit the value to a certain range

Parameters

value

number

Original value

min_inclusive

number

minimum value

max_inclusive

number

maximum value

Returns

number

Return the calculation result

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normalizeAngle()

static normalizeAngle(a): number

Defined in: src/math/MathUtil.ts:121

Normalize the Angle so that it is limited to the range [-180, 180]

Parameters

a

number

Angle of input

Returns

number

Return the processing result

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fract()

static fract(v): number

Defined in: src/math/MathUtil.ts:136

Returns the fractional part of a number

Parameters

v

number

input value

Returns

number

Return the result

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getRandDirXZ()

static getRandDirXZ(r): object

Defined in: src/math/MathUtil.ts:145

Generate a random pair of x and z coordinates that fall within the radius of the circle

Parameters

r

number

radius

Returns

object

The generated x, z results

x

x: number

z

z: number

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getRandDirXYZ()

static getRandDirXYZ(r): Vector3

Defined in: src/math/MathUtil.ts:158

Generate a random pair of x, y, and z coordinates that fall within the radius of the sphere

Parameters

r

number

radius

Returns

Vector3

The Vector3 vector formed by the generated x, y, and z coordinate values

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getCycleXYZ()

static getCycleXYZ(r): Vector3

Defined in: src/math/MathUtil.ts:172

According to the radius, generate a random pair of x, y, z coordinates that fall within the sphere and the y value is between [-r/2, r/2]

Parameters

r

number

radius

Returns

Vector3

The Vector3 vector formed by the generated x, y, and z coordinate values

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angle()

static angle(p1, p2): number

Defined in: src/math/MathUtil.ts:187

Calculate the Angle between two vectors

Parameters

p1

Vector3

Vector 1

p2

Vector3

Vector 2

Returns

number

Return the calculation result

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angle_360()

static angle_360(from, to): number

Defined in: src/math/MathUtil.ts:203

Calculate the Angle between two vectors

Parameters

from

Vector3

Vector 1

to

Vector3

Vector 2

Returns

number

The Angle between two vectors

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fromToRotation()

static fromToRotation(fromDirection, toDirection, target?): Quaternion

Defined in: src/math/MathUtil.ts:231

Calculate the quaternion from one direction to the other

Parameters

fromDirection

Vector3

Initial direction

toDirection

Vector3

The transformed direction

target?

Quaternion = null

The calculated quaternion is null by default and the result is returned

Returns

Quaternion

Quaternion The calculated quaternion returns a new instance created if target is null

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getEularDir_yUp()

static getEularDir_yUp(v): Vector3

Defined in: src/math/MathUtil.ts:244

Get the Eular direction

Parameters

v

number

input value

Returns

Vector3

Return the calculation result

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transformVector()

static transformVector(matrix, vector, result?): Vector3

Defined in: src/math/MathUtil.ts:258

Compute the vector transformation and assign the results to the input variables

Parameters

matrix

Matrix4

transformation matrix

vector

Vector3

Original vector

result?

Vector3 = null

output vector

Returns

Vector3

Returns the output vector

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getRotationY()

getRotationY(v): number

Defined in: src/math/MathUtil.ts:219

The rotation Angle around the Y-axis is obtained from the input vector

Parameters

v

Vector3

input vector

Returns

number

Return the calculation result