CIGAL Reference Manual, Chapter 6 (RealTime): r_flip
usage: r_flip opflg eflag ltime Rect Flag [DatBuf]
FLAG is a bit mask indicating the direction to flip:
1 - flip around the vertical axis (i.e., left to right) 2 - flip around the horizontal axis (i.e., top to bottom) 3 - flip left to right first, then top to bottom
See Also:
CIGAL Home,
CIGAL Manual,
RealTime List,
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