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McGePoint2d::scaleBy 方法

以wrtPoint原点,scaleFactor缩放该点

C++
McGePoint2d& scaleBy(double scaleFactor, const McGePoint2d& wrtPoint = McGePoint2d::kOrigin);
参数 
说明 
double scaleFactor 
输入比例因子 
const McGePoint2d& wrtPoint = McGePoint2d::kOrigin 
输入缩放中心 

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