Created
May 27, 2016 07:42
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Rects overlapping
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| """ | |
| Rects overlapping | |
| A rect representation: | |
| rect = [x1, y1, x2, y2] | |
| """ | |
| def range_overlap(a_min, a_max, b_min, b_max): | |
| return not ((a_min > b_max) or (a_max < b_min)) | |
| def overlap_rects(rect1, rect2): | |
| r1_x1, r1_y1, r1_x2, r1_y2 = rect1 | |
| r2_x1, r2_y1, r2_x2, r2_y2 = rect2 | |
| if (range_overlap(r1_x1, r1_x2, r2_x1, r2_x2) and | |
| range_overlap(r1_y1, r1_y2, r2_y1, r2_y2)): | |
| c_x1 = max(r1_x1, r2_x1) | |
| c_y1 = max(r1_y1, r2_y1) | |
| c_x2 = min(r1_x2, r2_x2) | |
| c_y2 = min(r1_y2, r2_y2) | |
| return [c_x1, c_y1, c_x2, c_y2] | |
| return None | |
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