@@ -93,7 +93,8 @@ static inline Direction DiagDirToDir(Dia
/* the 2 axis */
typedef enum Axis {
AXIS_X = 0,
AXIS_Y = 1
AXIS_Y = 1,
AXIS_END
} Axis;
@@ -112,4 +113,19 @@ static inline DiagDirection AxisToDiagDi
return (DiagDirection)(2 - a);
}
static inline bool IsValidDiagDirection(DiagDirection d)
{
return d < DIAGDIR_END;
static inline bool IsValidDirection(DiagDirection d)
return d < DIR_END;
static inline bool IsValidAxis(DiagDirection d)
return d < AXIS_END;
#endif