名称 

说明 

 

kIdentity 

零向量 

 

kXAxis 

X方向的向量 

 

kYAxis 

Y方向的向量 

 

x 

This is x, a member of class McGeVector2d. 

 

y 

This is y, a member of class McGeVector2d. 

名称 

说明 

MXGEDLL McGeVector2d operator * (const McGeMatrix2d& mat, const McGeVector2d& vec) 

This is friend MXGEDLL McGeVector2d operator * (const McGeMatrix2d& mat, const McGeVector2d& vec). 

MXGEDLL McGeVector2d operator * (double scl, const McGeVector2d& vec) 

This is friend MXGEDLL McGeVector2d operator * (double scl, const McGeVector2d& vec). 

 

名称 

说明 

 

angle 

返回这个矢量和X轴在范围[0, 2 * Pi]内的夹角 

 

angleTo 

返回这个矢量和矢量vec在范围[0, Pi]内的夹角 

 

isEqualTo 

两个失量是否相等 

 

isUnitLength 

这个矢量是否为单位失量 

 

isZeroLength 

这个失量是否为零长度 

 

length 

返回这个矢量的长度 

 

lengthSqrd 

返回这个矢量长度的平方 

 

McGeVector2d 

McGeVector2d 构造函数 有多种定义，点击查看. 

 

mirror 

This is mirror, a member of class McGeVector2d. 

 

negate 

求这个矢量的反矢量，即设置此矢量为矢量(-x, -y) 

 

normal 

返回平行于这个矢量的一个单位矢量,如果矢量的长度小于tol.equalVector()则此矢量不被规范化，此时返回的矢量与这个矢量相同 

 

normalize 

normalize 方法 有多种定义，点击查看. 

 

perpVector 

返回与这个矢量正交的一个矢量，即矢量( -y, x) 

 

rotateBy 

旋转矢量。旋转角度由变量angle给定，其中旋转的正方向设为从X轴到Y轴 

 

set 

设置失量的x,y值 

 

setToProduct 

setToProduct 方法 有多种定义，点击查看. 

 

setToSum 

This is setToSum, a member of class McGeVector2d. 

 

transformBy 

把向量与矩阵变换，结果和setToProduct(mat, *this)相同 

 

名称 

说明 

 

- 

- 操作符 有多种定义，点击查看. 

 

!= 

This is !=, a member of class McGeVector2d. 

 

* 

This is *, a member of class McGeVector2d. 

 

*= 

This is *=, a member of class McGeVector2d. 

 

/ 

This is /, a member of class McGeVector2d. 

 

/= 

This is /=, a member of class McGeVector2d. 

 

[] 

[] 操作符 有多种定义，点击查看. 

 

+ 

This is +, a member of class McGeVector2d. 

 

+= 

This is +=, a member of class McGeVector2d. 

 

-= 

This is -=, a member of class McGeVector2d. 

 

== 

This is ==, a member of class McGeVector2d. 

 

McGeMatrix2d 

由这个矢量返回变换矩阵