24#include "AstCore/Frame.hpp"
39 static Frame* Instance();
40 Frame* getParent()
const override;
41 Axes* getAxes()
const override;
42 Point* getOrigin()
const override;
47A_ALWAYS_INLINE
Frame* aFrameRoot()
49 return FrameRoot::Instance();
绝对时间点
定义 TimePoint.hpp:106