surface expandedness

The characteristic of the algorithm is that distance between the edge points and the center points is changeless before or after surface expandedness, so It meets the request of putting metal wallboards together without gap.
算法具有曲面展開(kāi)前后其邊沿點(diǎn)到中心點(diǎn)的距離不變的特點(diǎn),從而可以滿(mǎn)足曲面整體拼裝后的接縫整齊美觀的要求。