1) polygonal clipping Boundaries
多边形剪切边界
2) boundary polygon
边界多边形
4) Polygon clipping
多边形裁剪
1.
Application of polygon clipping to visual tunnel excavation;
多边形裁剪在虚拟隧道开挖中的应用
2.
The application of general clipping algorithm occurs frequently in geographical information systems(GIS),which is designed usually as general polygon clipping against single general or rectangle polygon.
从提高任意多边形裁剪效能的要求出发,提出以矩形网格来裁剪任意多边形的思想,该算法省去传统裁剪方式中一些重复运算步骤和数据访问、直线求交的工作量,同时也考虑了节省内存的需求,裁剪性能比传统的逐一单元格裁剪方式有所提高。
3.
Concave polygons have to be divided into several convex polygons, and are clipped according to convex polygon clipping algorithms.
解决了大多数算法将凹多边形裁剪分解为凸多边形处理存在计算时间长、难度大等问题。
5) boundary shear stress
边界剪切应力
1.
Depth-averaged model for lateral distribution of flow velocity and boundary shear stress in an open channel;
明渠断面水流流速与边界剪切应力横向分布模型
2.
Compared with single channel,distributions of boundary shear stress are changed by the momentum transfer between main channel and floodplains.
在复式断面明渠中,由于存在滩槽水流动量的交换,改变了边界剪切应力的分布规律,进而影响滩槽的阻力和输水能力。
6) shear boundary condition
剪切边界条件
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