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/* $Id$ */

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#ifndef DIRECTION_H

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#define DIRECTION_H

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/* the 2 axis */

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typedef enum Axis {

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	AXIS_X = 0,

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	AXIS_Y = 1,

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	AXIS_END

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} Axis;

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static inline Axis DiagDirToAxis(uint d)

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{

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	return (Axis)(d & 1);

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}

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/*

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 * Converts an Axis to a DiagDirection

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 * Points always in the positive direction, i.e. S[EW]

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 */

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static inline uint AxisToDiagDir(Axis a)

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{

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	return (uint)(2 - a);

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}

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#endif