Vec3 Class

Extends ValueType

Module: cc Parent Module: cc

Representation of 3D vectors and points.

Index

Properties

• ONE Vec3 return a Vec3 object with x = 1, y = 1, z = 1.
• ZERO Vec3 return a Vec3 object with x = 0, y = 0, z = 0.
• UP Vec3 return a Vec3 object with x = 0, y = 1, z = 0.
• RIGHT Vec3 return a Vec3 object with x = 1, y = 0, z = 0.
• FORWARD Vec3 return a Vec3 object with x = 0, y = 0, z = 1.
• x Number
• y Number
• z Number

Methods

• mag Returns the length of this vector.
• magSqr Returns the squared length of this vector.
• subSelf Subtracts one vector from this.
• sub Subtracts one vector from this, and returns the new result.
• mulSelf Multiplies this by a number.
• mul Multiplies by a number, and returns the new result.
• divSelf Divides by a number.
• div Divides by a number, and returns the new result.
• scaleSelf Multiplies two vectors.
• scale Multiplies two vectors, and returns the new result.
• negSelf Negates the components.
• neg Negates the components, and returns the new result.
• zero The target of an assignment zero vector
• clone Obtaining copy vectors designated
• copy Copy the target vector
• set Set to value
• add Element-wise vector addition
• subtract Element-wise vector subtraction
• multiply Element-wise vector multiplication (product component)
• divide Element-wise vector division
• ceil Rounding up by elements of the vector
• floor Element vector by rounding down
• min The minimum by-element vector
• max The maximum value of the element-wise vector
• round Element-wise vector of rounding to whole
• multiplyScalar Vector scalar multiplication
• scaleAndAdd Element-wise vector multiply add: A + B * scale
• distance Seeking two vectors Euclidean distance
• squaredDistance Euclidean distance squared seeking two vectors
• len Seeking vector length
• lengthSqr Seeking squared vector length
• negate By taking the negative elements of the vector
• inverse Element vector by taking the inverse, return near 0 Infinity
• inverseSafe Element vector by taking the inverse, return near 0 0
• normalize Normalized vector
• dot Vector dot product (scalar product)
• cross Vector cross product (vector product)
• lerp Vector element by element linear interpolation: A + t * (B - A)
• random Generates a uniformly distributed random vectors on the unit sphere
• transformMat4 Four-dimensional vector and matrix multiplication, the default vectors fourth one.
• transformMat4Normal Four-dimensional vector and matrix multiplication, vector fourth default is 0.
• transformMat3 Dimensional vector matrix multiplication
• transformQuat Vector quaternion multiplication
• rotateX Rotation vector specified angle about the X axis
• rotateY Rotation vector specified angle around the Y axis
• rotateZ Around the Z axis specified angle vector
• strictEquals Equivalent vectors Analyzing
• equals Negative error vector floating point approximately equivalent Analyzing
• angle Radian angle between two vectors seek
• projectOnPlane Calculating a projection vector in the specified plane
• project Projection vector calculated in the vector designated
• toArray Vector transfer array
• fromArray Array steering amount
• constructor Constructor
• clone clone a Vec3 value
• set Set the current vector value with the given vector.
• equals Check whether the vector equals another one
• fuzzyEquals Check whether two vector equal with some degree of variance.
• toString Transform to string with vector informations
• lerp Calculate linear interpolation result between this vector and another one with given ratio
• clampf Clamp the vector between from float and to float.
• addSelf Adds this vector.
• add Adds two vectors, and returns the new result.
• subtract Subtracts one vector from this.
• multiplyScalar Multiplies this by a number.
• multiply Multiplies two vectors.
• divide Divides by a number.
• negate Negates the components.
• dot Dot product
• cross Cross product
• len Returns the length of this vector.
• lengthSqr Returns the squared length of this vector.
• normalizeSelf Make the length of this vector to 1.
• normalize Note that the current vector is unchanged and a new normalized vector is returned.
• transformMat4 Transforms the vec3 with a mat4.
• maxAxis Returns the maximum value in x, y, and z
• angle Get angle in radian between this and vector.
• project Calculates the projection of the current vector over the given vector.
• signAngle Get angle in radian between this and vector with direction.
• rotate rotate.
• rotateSelf rotate self.

Details

Properties

ONE

return a Vec3 object with x = 1, y = 1, z = 1.

ZERO

return a Vec3 object with x = 0, y = 0, z = 0.

UP

return a Vec3 object with x = 0, y = 1, z = 0.

RIGHT

return a Vec3 object with x = 1, y = 0, z = 0.

FORWARD

return a Vec3 object with x = 0, y = 0, z = 1.

x

y

z

Methods

mag

Returns the length of this vector.

Examples

var v = cc.v3(10, 10, 10);
v.mag(); // return 17.320508075688775;

magSqr

Returns the squared length of this vector.

subSelf

Subtracts one vector from this. If you want to save result to another vector, use sub() instead.

Parameters

• vector Vec3

sub

Subtracts one vector from this, and returns the new result.

Parameters

• vector Vec3
• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

mulSelf

Multiplies this by a number. If you want to save result to another vector, use mul() instead.

Parameters

• num number

mul

Multiplies by a number, and returns the new result.

Parameters

• num number
• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

divSelf

Divides by a number. If you want to save result to another vector, use div() instead.

Parameters

• num number

div

Divides by a number, and returns the new result.

Parameters

• num number
• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

scaleSelf

Multiplies two vectors.

Parameters

• vector Vec3

scale

Multiplies two vectors, and returns the new result.

Parameters

• vector Vec3
• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

negSelf

Negates the components. If you want to save result to another vector, use neg() instead.

neg

Negates the components, and returns the new result.

Parameters

• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

zero

The target of an assignment zero vector

clone

Obtaining copy vectors designated

copy

Copy the target vector

set

Set to value

add

Element-wise vector addition

subtract

Element-wise vector subtraction

multiply

Element-wise vector multiplication (product component)

divide

Element-wise vector division

ceil

Rounding up by elements of the vector

floor

Element vector by rounding down

min

The minimum by-element vector

max

The maximum value of the element-wise vector

round

Element-wise vector of rounding to whole

multiplyScalar

Vector scalar multiplication

scaleAndAdd

Element-wise vector multiply add: A + B * scale

distance

Seeking two vectors Euclidean distance

squaredDistance

Euclidean distance squared seeking two vectors

len

Seeking vector length

lengthSqr

Seeking squared vector length

negate

By taking the negative elements of the vector

inverse

Element vector by taking the inverse, return near 0 Infinity

inverseSafe

Element vector by taking the inverse, return near 0 0

normalize

Normalized vector

dot

Vector dot product (scalar product)

cross

Vector cross product (vector product)

lerp

Vector element by element linear interpolation: A + t * (B - A)

random

Generates a uniformly distributed random vectors on the unit sphere

Parameters

• scale Unknown 生成的向量长度

transformMat4

Four-dimensional vector and matrix multiplication, the default vectors fourth one.

transformMat4Normal

Four-dimensional vector and matrix multiplication, vector fourth default is 0.

transformMat3

Dimensional vector matrix multiplication

transformQuat

Vector quaternion multiplication

rotateX

Rotation vector specified angle about the X axis

Parameters

• v Unknown 待旋转向量
• o Unknown 旋转中心
• a Unknown 旋转弧度

rotateY

Rotation vector specified angle around the Y axis

Parameters

• v Unknown 待旋转向量
• o Unknown 旋转中心
• a Unknown 旋转弧度

rotateZ

Around the Z axis specified angle vector

Parameters

• v Unknown 待旋转向量
• o Unknown 旋转中心
• a Unknown 旋转弧度

strictEquals

Equivalent vectors Analyzing

equals

Negative error vector floating point approximately equivalent Analyzing

angle

Radian angle between two vectors seek

projectOnPlane

Calculating a projection vector in the specified plane

Parameters

• a Unknown 待投影向量
• n Unknown 指定平面的法线

project

Projection vector calculated in the vector designated

Parameters

• a Unknown 待投影向量
• n Unknown 目标向量

toArray

Vector transfer array

Parameters

• ofs Unknown 数组起始偏移量

fromArray

Array steering amount

Parameters

• ofs Unknown 数组起始偏移量

constructor

Constructor see Cc/vec3:method

Parameters

• x Vec3 | number
• y number
• z number

clone

clone a Vec3 value

set

Set the current vector value with the given vector.

Parameters

• newValue Vec3 !#en new value to set. !#zh 要设置的新值

equals

Check whether the vector equals another one

Parameters

• other Vec3

fuzzyEquals

Check whether two vector equal with some degree of variance.

Parameters

• other Vec3
• variance Number

toString

Transform to string with vector informations

lerp

Calculate linear interpolation result between this vector and another one with given ratio

Parameters

• to Vec3
• ratio number the interpolation coefficient
• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

clampf

Clamp the vector between from float and to float.

Parameters

• min_inclusive Vec3
• max_inclusive Vec3

addSelf

Adds this vector. If you want to save result to another vector, use add() instead.

Parameters

• vector Vec3

add

Adds two vectors, and returns the new result.

Parameters

• vector Vec3
• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

subtract

Subtracts one vector from this.

Parameters

• vector Vec3

multiplyScalar

Multiplies this by a number.

Parameters

• num number

multiply

Multiplies two vectors.

Parameters

• vector Vec3

divide

Divides by a number.

Parameters

• num number

negate

Negates the components.

dot

Dot product

Parameters

• vector Vec3

cross

Cross product

Parameters

• vector Vec3
• out Vec3

len

Returns the length of this vector.

Examples

var v = cc.v3(10, 10, 10);
v.len(); // return 17.320508075688775;

lengthSqr

Returns the squared length of this vector.

normalizeSelf

Make the length of this vector to 1.

normalize

Returns this vector with a magnitude of 1.

Note that the current vector is unchanged and a new normalized vector is returned. If you want to normalize the current vector, use normalizeSelf function.

Parameters

• out Vec3 optional, the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

transformMat4

Transforms the vec3 with a mat4. 4th vector component is implicitly '1'

Parameters

• m Mat4 matrix to transform with
• out Vec3 the receiving vector, you can pass the same vec3 to save result to itself, if not provided, a new vec3 will be created

maxAxis

Returns the maximum value in x, y, and z

angle

Get angle in radian between this and vector.

Parameters

• vector Vec3

project

Calculates the projection of the current vector over the given vector.

Parameters

• vector Vec3

Examples

var v1 = cc.v3(20, 20, 20);
var v2 = cc.v3(5, 5, 5);
v1.project(v2); // Vec3 {x: 20, y: 20, z: 20};

signAngle

Get angle in radian between this and vector with direction.
In order to compatible with the vec2 API.

Parameters

• vector Vec3 | Vec2

rotate

rotate. In order to compatible with the vec2 API.

Parameters

• radians number
• out Vec3 optional, the receiving vector, you can pass the same vec2 to save result to itself, if not provided, a new vec2 will be created

rotateSelf

rotate self. In order to compatible with the vec2 API.

Parameters

• radians number