Question

Description 描述

Representation of 3D vectors and points.

表示3D的向量和点。

This structure is used throughout Unity to pass 3D positions and directions around. It also contains functions for doing common vector operations.

这个结构用于在Unity传递3D位置和方向。它也包含做些普通向量运算的函数。

Besides the functions listed below, other classes can be used to manipulate vectors and points as well. For example the Quaternion and the Matrix4x4 classes are useful for rotating or transforming vectors and points.

除了下面列出的函数，其他类用于处理向量和点。例如Quaternion和Matrix4x4类用于旋转或变换向量和点。

Static Variables 静态变量

back	Shorthand for writing Vector3(0, 0, -1). 写Vector3(0, 0, -1)的简码。
down	Shorthand for writing Vector3(0, -1, 0). 写Vector3(0, -1, 0)的简码。
forward	Shorthand for writing Vector3(0, 0, 1). 写Vector3(0, 0, 1)的简码,也就是向z轴。
left	Shorthand for writing Vector3(-1, 0, 0). 写Vector3(-1, 0, 0)的简码。
one	Shorthand for writing Vector3(1, 1, 1). 写Vector3(1, 1, 1)的简码。
right	Shorthand for writing Vector3(1, 0, 0). 写Vector3(1, 0, 0)的简码,也就是向x轴。
up	Shorthand for writing Vector3(0, 1, 0). 写Vector3(0, 1, 0)的简码,也就是向y轴
zero	Shorthand for writing Vector3(0, 0, 0). 写Vector3(0, 0, 0)的简码。

Variables 变量

magnitude	Returns the length of this vector (Read Only). 返回向量的长度（只读）。
normalized	Returns this vector with a magnitude of 1 (Read Only). 返回长度为1的该向量（只读）。
sqrMagnitude	Returns the squared length of this vector (Read Only). 返回这个向量的长度的平方（只读）。
this[int]	Access the x, y, z components using [0], [1], [2] respectively. 使用[0], [1], [2]分别访问组件x, y, z组件。简单来说就是用索引号代替x, y, z组件。
x	X component of the vector. 向量的X组件。
y	Y component of the vector. 向量的Y组件。
z	Z component of the vector. 向量的Z组件。

Constructors 构造器

Vector3

Creates a new vector with given x, y, z components. 创建一个新的具有给定x, y, z组件的向量。

Functions 函数

Set	Set x, y and z components of an existing Vector3. 设置现有的Vector3的x、y、z组件
ToString	Returns a nicely formatted string for this vector. 返回此向量格式化的字符串。

Static Functions 静态函数

Angle	Returns the angle in degrees between from and to. 由from和to两者返回一个角度。
ClampMagnitude	Returns a copy of vector with its magnitude clamped to maxLength. 返回向量的长度，最大不超过maxLength所指示的长度。
Cross	Cross Product of two vectors. 两个向量的交叉乘积。返回lhs x rhs。
Distance	Returns the distance between a and b. 返回a和b之间的距离。
Dot	Dot Product of two vectors. 两个向量的点乘积。
Lerp	Linearly interpolates between two vectors. 两个向量之间的线性插值。
LerpUnclamped	Linearly interpolates between two vectors. 两个向量之间的线性插值。改插值t在小于0或大于1时的返回值不会被限制。
Max	Returns a vector that is made from the largest components of two vectors. 返回一个由两个向量的最大组件组成的向量。
Min	Returns a vector that is made from the smallest components of two vectors. 返回一个由两个向量的最小组件组成的向量。
MoveTowards	Moves a point current in a straight line towards a target point. 当前的地点移向目标。
Normalize	Makes this vector have a magnitude of 1. 使向量的长度为1。
OrthoNormalize	Makes vectors normalized and orthogonal to each other. 使向量规范化并且彼此相互垂直。
Project	Projects a vector onto another vector. 投影一个向量到另一个向量。
ProjectOnPlane	Projects a vector onto a plane defined by a normal orthogonal to the plane. 投影向量到一个平面上由垂直到该平面的法线定义。
Reflect	Reflects a vector off the plane defined by a normal. 沿着法线反射向量。
RotateTowards	Rotates a vector current towards target. 当前的向量转向目标。
Scale	Multiplies two vectors component-wise. 两个矢量组件对应相乘。
Slerp	Spherically interpolates between two vectors. 在两个向量之间球形插值。
SlerpUnclamped	Spherically interpolates between two vectors. 在两个向量之间球形插值。改插值t在小于0或大于1时的返回值不会被限制。
SmoothDamp	Gradually changes a vector towards a desired goal over time. 随着时间的推移，逐渐改变一个向量朝向预期的目标。