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| # This tests whether the first point is east or west of the boundary | |
| if (boundary[1] < point1[1]): | |
| if (bearing < 30 and bearing > 230): | |
| direction = 'Upstream' | |
| else: | |
| direction = 'Downstream' | |
| else: | |
| if (bearing < 270 and bearing > 120): | |
| direction = 'Upstream' | |
| else: | |
| direction = 'Downstream' | |
| if (boundary[1] < point1[1] and boundary[1] > point2[1]): | |
| direction = 'Upstream' | |
| if (boundary[1] > point1[1] and boundary[1] < point2[1]): | |
| direction = 'Downstream' |
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