Rev 684 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
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| - | 1 | #include <stdlib.h> |
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| 1 | #include <avr/pgmspace.h> |
2 | #include <avr/pgmspace.h> |
| 2 | #include "mymath.h" |
3 | #include "mymath.h" |
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| 3 | 4 | ||
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| 13 | 14 | ||
| 14 | // avoid negative angles |
15 | // avoid negative angles |
| 15 | if (angle < 0) |
16 | if (angle < 0) |
| 16 | { |
17 | { |
| 17 | m = -1; |
18 | m = -1; |
| 18 | angle = -angle; |
19 | angle = abs(angle); |
| 19 | } |
20 | } |
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| 20 | else m = 1; |
21 | else m = +1; |
| 21 | 22 | ||
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| 22 | // fold angle to intervall 0 to 359 |
23 | // fold angle to intervall 0 to 359 |
| 23 | angle %= 360; |
24 | angle %= 360; |
| 24 | 25 | ||
| 25 | // queck quadrant |
26 | // check quadrant |
| 26 | if (angle <= 90) n=1; // first quadrant |
27 | if (angle <= 90) n=1; // first quadrant |
| 27 | else if ((angle > 90) && (angle <= 180)) {angle = 180 - angle; n = 1;} // second quadrant |
28 | else if ((angle > 90) && (angle <= 180)) {angle = 180 - angle; n = 1;} // second quadrant |