author | Darkvater |
Mon, 31 Jul 2006 15:49:12 +0000 | |
branch | 0.4 |
changeset 10070 | 308b88d1851f |
parent 10032 | fcf09abbde96 |
permissions | -rw-r--r-- |
10032 | 1 |
/* $Id$ */ |
2 |
||
3 |
#ifndef DIRECTION_H |
|
4 |
#define DIRECTION_H |
|
5 |
||
6 |
||
7 |
/* the 2 axis */ |
|
8 |
typedef enum Axis { |
|
9 |
AXIS_X = 0, |
|
10 |
AXIS_Y = 1, |
|
11 |
AXIS_END |
|
12 |
} Axis; |
|
13 |
||
14 |
||
15 |
static inline Axis DiagDirToAxis(uint d) |
|
16 |
{ |
|
17 |
return (Axis)(d & 1); |
|
18 |
} |
|
19 |
||
20 |
||
21 |
/* |
|
22 |
* Converts an Axis to a DiagDirection |
|
23 |
* Points always in the positive direction, i.e. S[EW] |
|
24 |
*/ |
|
25 |
static inline uint AxisToDiagDir(Axis a) |
|
26 |
{ |
|
27 |
return (uint)(2 - a); |
|
28 |
} |
|
29 |
||
30 |
#endif |