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McGeVector2d 数据 成员 Public Data Members
Public 数据成员
 
名称 
说明 
 
零向量 
 
X方向的向量 
 
Y方向的向量 
 
x 
This is x, a member of class McGeVector2d. 
 
y 
This is y, a member of class McGeVector2d. 
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