中文摘要：

为了方便快捷地对三维网格模型进行剪切一粘贴，提出了一种新的适用于三维三角形网格的剪切-粘贴方法，该方法把选取的源曲面的特征部分直接粘贴到目标曲面上．通过2个对应平面，源曲面的特征部分被转移到粘贴位置；利用局部网格表示的方法，在最小二乘意义下重建源网格；最后连接源曲面特征区域的边缘顶点和目标曲面上的粘贴区域受影响的顶点．该算法简单，交互性强，适用于任意拓扑结构的源网格，并且结果自然、失真很小．

英文摘要：

A novel direct cut-and-paste editing method over 3D triangular meshes is proposed in this paper. The source feature mesh is transferred to the position where it is to be pasted through the corresponding planes. The planes are created by using the least squares approximation. The local mesh representation is used, and the pasted region is reconstructed in the least squares sense. Then, the boundary vertices of the source feature mesh are connected with target mesh. This method is applicable to source geometry features with non-zero genus. It can be performed at interactive rates and can produce authentic effects with little distortion.