Created
April 13, 2017 13:45
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| public static List<Point2D_F64> sortPoints( List<Point2D_F64> pts ) { | |
| //Copy points into a working list | |
| List<Point2D_F64> points = new ArrayList<Point2D_F64>(); | |
| points.addAll(pts); | |
| //Create list of points to be returned. | |
| List<Point2D_F64> returns = new ArrayList<Point2D_F64>(); | |
| //Sort the points by Y value | |
| Collections.sort(points, new Comparator<Point2D_F64>() { | |
| @Override | |
| public int compare( Point2D_F64 a, Point2D_F64 b ) { | |
| if (a.y < b.y) { | |
| return -1; | |
| } else if (a.y == b.y) { | |
| return 0; | |
| } else { | |
| return 1; | |
| } | |
| } | |
| }); | |
| // First 2 elements in the list are the top of the page. The one with | |
| // the lower X is TL the other is TR | |
| Point2D_F64 a, b; | |
| a = points.get(0); | |
| b = points.get(1); | |
| if (a.x < b.x) { | |
| returns.add(a); | |
| returns.add(b); | |
| } else { | |
| returns.add(b); | |
| returns.add(a); | |
| } | |
| // Second 2 elements are the bottom points | |
| a = points.get(2); | |
| b = points.get(3); | |
| if (a.x < b.x) { | |
| returns.add(b); | |
| returns.add(a); | |
| } else { | |
| returns.add(a); | |
| returns.add(b); | |
| } | |
| return returns; | |
| } |
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