Vector2

struct in UnityEngine

Description 描述

Representation of 2D vectors and points.

This structure is used in some places to represent 2D positions and vectors (e.g. texture coordinates in a Mesh or texture offsets in Material). In the majority of other cases a Vector3 is used.

Static Properties

	down		Shorthand for writing Vector2(0, -1).
	left		Shorthand for writing Vector2(-1, 0).
	negativeInfinity		Shorthand for writing Vector2(float.NegativeInfinity, float.NegativeInfinity).
	one		Shorthand for writing Vector2(1, 1).
	positiveInfinity		Shorthand for writing Vector2(float.PositiveInfinity, float.PositiveInfinity).
	right		Shorthand for writing Vector2(1, 0).
	up		Shorthand for writing Vector2(0, 1).
	zero		Shorthand for writing Vector2(0, 0).

Properties 属性

	magnitude		Returns the length of this vector (Read Only).
	normalized		Returns this vector with a magnitude of 1 (Read Only).
	sqrMagnitude		Returns the squared length of this vector (Read Only).
	this[int]		Access the x or y component using [0] or [1] respectively.
	x		X component of the vector.
	y		Y component of the vector.

Constructors

Vector2

Constructs a new vector with given x, y components.

Public Methods 公共方法

	Equals		Returns true if the given vector is exactly equal to this vector.
	Normalize		Makes this vector have a magnitude of 1.
	Set		Set x and y components of an existing Vector2.
	ToString		Returns a nicely formatted string for this vector.

Static Methods 静态方法

	Angle		Returns the unsigned angle in degrees between from and to.
	ClampMagnitude		Returns a copy of vector with its magnitude clamped to maxLength.
	Distance		Returns the distance between a and b.
	Dot		Dot Product of two vectors.
	Lerp		Linearly interpolates between vectors a and b by t.
	LerpUnclamped		Linearly interpolates between vectors a and b by t.
	Max		Returns a vector that is made from the largest components of two vectors.
	Min		Returns a vector that is made from the smallest components of two vectors.
	MoveTowards		Moves a point current towards target.
	Perpendicular		Returns the 2D vector perpendicular to this 2D vector. The result is always rotated 90-degrees in a counter-clockwise direction for a 2D coordinate system where the positive Y axis goes up.
	Reflect		Reflects a vector off the vector defined by a normal.
	Scale		Multiplies two vectors component-wise.
	SignedAngle		Returns the signed angle in degrees between from and to.
	SmoothDamp		Gradually changes a vector towards a desired goal over time.

Operators 运算符

	operator -		Subtracts one vector from another.
	operator *		Multiplies a vector by a number.
	operator /		Divides a vector by a number.
	operator +		Adds two vectors.
	operator ==		Returns true if two vectors are approximately equal.
	Vector2		Converts a Vector3 to a Vector2.
	Vector3		Converts a Vector2 to a Vector3.