Vector2D结构体 参考

二维向量 更多...

#include <Struct.h>

Public 成员函数
	Vector2D ()
	Vector2D (float a, float b)
float	size ()
	自己的向量长度
Vector2D	unit ()
	单位向量
std::string	To_String () const
	将向量转化为字符串
Vector2D	operator+ (const Vector2D &another)
Vector2D	operator- (const Vector2D &another)
Vector2D &	operator+= (const Vector2D &another)
Vector2D &	operator-= (const Vector2D &another)
Vector2D	operator* (float scale) const
Vector2D &	operator*= (float scale)
Vector2D	operator* (const Vector2D &another) const
bool	operator== (const Vector2D &another)
Vector2D	operator/ (const Vector2D &another)
Vector2D	operator/ (float scale) const
bool	operator== (const Vector2D &another) const
bool	operator!= (const Vector2D &another) const

静态 Public 成员函数
static float	Distance (const Vector2D &a, const Vector2D &b)
	获取两个坐标之间的距离(标量)
static float	DotProduct (const Vector2D &v1, const Vector2D &v2)
	向量点积
static Vector2D	CrossProduct (const Vector2D &v1, const Vector2D &v2)
	向量叉积
static Vector2D	RotateVector (float angle, Vector2D &another)
	旋转某一向量，返回旋转后的向量（单位是角度）
static Vector2D	ProjectVector (Vector2D &u, Vector2D &v)
	向量投影 u投影到v上

Public 属性
float	x
float	y

详细描述

二维向量

精度较高的二维向量

构造及析构函数说明

Vector2D() [1/2]

Vector2D::Vector2D ( )

inline

Vector2D() [2/2]

Vector2D::Vector2D ( float a, float b )

inline

成员函数说明

CrossProduct()

static Vector2D Vector2D::CrossProduct ( const Vector2D & v1, const Vector2D & v2 )

inlinestatic

向量叉积

返回

v1×v2

Distance()

static float Vector2D::Distance ( const Vector2D & a, const Vector2D & b )

inlinestatic

获取两个坐标之间的距离(标量)

参数

向量1
向量2

返回

距离标量

DotProduct()

static float Vector2D::DotProduct ( const Vector2D & v1, const Vector2D & v2 )

inlinestatic

向量点积

返回

v1·v2

operator!=()

bool Vector2D::operator!= ( const Vector2D & another ) const

inline

operator*() [1/2]

Vector2D Vector2D::operator* ( const Vector2D & another ) const

inline

operator*() [2/2]

Vector2D Vector2D::operator* ( float scale ) const

inline

operator*=()

Vector2D & Vector2D::operator*= ( float scale )

inline

operator+()

Vector2D Vector2D::operator+ ( const Vector2D & another )

inline

operator+=()

Vector2D & Vector2D::operator+= ( const Vector2D & another )

inline

operator-()

Vector2D Vector2D::operator- ( const Vector2D & another )

inline

operator-=()

Vector2D & Vector2D::operator-= ( const Vector2D & another )

inline

operator/() [1/2]

Vector2D Vector2D::operator/ ( const Vector2D & another )

inline

operator/() [2/2]

Vector2D Vector2D::operator/ ( float scale ) const

inline

operator==() [1/2]

bool Vector2D::operator== ( const Vector2D & another )

inline

operator==() [2/2]

bool Vector2D::operator== ( const Vector2D & another ) const

inline

ProjectVector()

static Vector2D Vector2D::ProjectVector ( Vector2D & u, Vector2D & v )

inlinestatic

向量投影 u投影到v上

RotateVector()

static Vector2D Vector2D::RotateVector ( float angle, Vector2D & another )

inlinestatic

旋转某一向量，返回旋转后的向量（单位是角度）

注意坐标系方向 默认顺时针

size()

float Vector2D::size ( )

inline

自己的向量长度

To_String()

std::string Vector2D::To_String ( ) const

inline

将向量转化为字符串

返回

格式(x,y)

unit()

Vector2D Vector2D::unit ( )

inline

单位向量

类成员变量说明

x

float Vector2D::x

y

float Vector2D::y