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. 2015 Jul 24;10(7):e0133905. doi: 10.1371/journal.pone.0133905

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© 2015 Sun et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 7 — The range of curve is the same with that of Fig 6, and it is an eighth of the moving space which is symmetrical around $_{m}^{m s} P_{0}$ . The initialized control points ‘○’ take control of the surrounding space which is partitioned by adjacent control points.