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Cardinal Direction: get cardinal direction from degrees
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| //given "0-360" returns the nearest cardinal direction "N/NE/E/SE/S/SW/W/NW/N" | |
| function getCardinal (angle) { | |
| if (angle >= 0 && angle <= 22 || angle >= 338 && angle <= 360) | |
| return "N"; | |
| if (angle >= 23 && angle <= 67) | |
| return "NE"; | |
| if (angle >= 68 && angle <= 112) | |
| return "E"; | |
| if (angle >= 113 && angle <= 157) | |
| return "SE"; | |
| if (angle >= 158 && angle <= 202) | |
| return "S"; | |
| if (angle >= 203 && angle <= 247) | |
| return "SW"; | |
| if (angle >= 248 && angle <= 292) | |
| return "W"; | |
| if (angle >= 293 && angle <= 337) | |
| return "NW"; | |
| //Should never happen: | |
| return undefined; | |
| } |
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