Class: Vector4

Vector4

new Vector4(x, y, z, w)

四维向量

Name Type Default Description
x Number 0 optional

X component

y Number 0 optional

Y component

z Number 0 optional

Z component

w Number 0 optional

W component

Members Show Inherited

Name Type Default Description
className String Vector4

类名

isVector4 Boolean true
elements Float32Array

数据

x Number

X component

y Number

Y component

z Number

Z component

w Number

W component

Methods Show Inherited

Copy the values from one vec4 to this

Name Type Description
m Vector4

the source vector

Returns:
Type Description
Vector4 this

Creates a new vec4 initialized with values from this vector

Returns:
Type Description
Vector4 a new Vector4

toArray(array, offset){Array}

转换到数组

Name Type Default Description
array Array [] optional

数组

offset Number 0 optional

数组偏移值

Returns:
Type Description
Array

fromArray(array, offset){Vector4}

从数组赋值

Name Type Default Description
array Array

数组

offset Number 0 optional

数组偏移值

Returns:
Type Description
Vector4 this

set(x, y, z, w){Vector4}

Set the components of a vec4 to the given values

Name Type Description
x Number

X component

y Number

Y component

z Number

Z component

w Number

W component

Returns:
Type Description
Vector4 this

Adds two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的和

Returns:
Type Description
Vector4 this

subtract(a, b){Vector4}

Subtracts vector b from vector a

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的差

Returns:
Type Description
Vector4 this

multiply(a, b){Vector4}

Multiplies two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的积

Returns:
Type Description
Vector4 this

Divides two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的商

Returns:
Type Description
Vector4 this

Math.ceil the components of this

Returns:
Type Description
Vector4 this

Math.floor the components of this

Returns:
Type Description
Vector4 this

Returns the minimum of two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Vector4 this

Returns the maximum of two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Vector4 this

Math.round the components of this

Returns:
Type Description
Vector4 this

Scales this by a scalar number

Name Type Description
scale Number

amount to scale the vector by

Returns:
Type Description
Vector4 this

scaleAndAdd(scale, a, b){Vector4}

Adds two vec4's after scaling the second vector by a scalar value

Name Type Description
scale Number

the amount to scale the second vector by before adding

a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Vector4 this

distance(a, b){Number}

Calculates the euclidian distance between two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Number distance between a and b

squaredDistance(a, b){Number}

Calculates the squared euclidian distance between two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Number squared distance between a and b

length(){Number}

Calculates the length of this

Returns:
Type Description
Number length of this

squaredLength(){Number}

Calculates the squared length of this

Returns:
Type Description
Number squared length of this

Negates the components of this

Returns:
Type Description
Vector4 this

Returns the inverse of the components of a vec4

Name Type Default Description
a Vector4 this optional
Returns:
Type Description
Vector4 this

Normalize this

Returns:
Type Description
Vector4 this

dot(a, b){Number}

Calculates the dot product of two vec4's

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Number product of a and b

Performs a linear interpolation between two vec4's

Name Type Description
v Vector4
t Number

interpolation amount between the two vectors

Returns:
Type Description
Vector4 this

random(scale){Vector4}

Generates a random vector with the given scale

Name Type Default Description
scale Number 1 optional

Length of the resulting vector. If ommitted, a unit vector will be returned

Returns:
Type Description
Vector4 this

transformMat4(m){Vector4}

Transforms the vec4 with a mat4

Name Type Description
m Matrix4

matrix to transform with

Returns:
Type Description
Vector4 this

transformQuat(q){Vector4}

Transforms the vec4 with a quat

Name Type Description
q Quaternion

quaternion to transform with

Returns:
Type Description
Vector4 this

exactEquals(a, b){Boolean}

Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Boolean True if the vectors are equal, false otherwise.

equals(a, b){Boolean}

Returns whether or not the vectors have approximately the same elements in the same position.

Name Type Description
a Vector4
b Vector4 optional

如果不传,计算 this 和 a 的结果

Returns:
Type Description
Boolean True if the vectors are equal, false otherwise.

Alias for Vector4#subtract

Alias for Vector4#multiply

Alias for Vector4#divide

Alias for Vector4#distance

Alias for Vector4#length