查询词典 convex polygon

However, if the polygon is convex, then the bimedial and bisector skeletons will coincide and each subpolygon will be convex.

但是，如果原外围多边形本身是凸的，则中间线骨架与角分线骨架一致，且每个子多边形也均为凸。

By decomposing each polygon into a set of several individual convex sub-polygons and constructing the map between the two sets, this method can solve the metamorphosis problem of two polygons which have not same topology(including concave polygon and holey polygon).

解决了任意非同拓扑结构的变形问题。

Sort-and-Incremental Algorithm Step 4: Intersections of adjacent h-plane pairs in stack form half a convex polygon.

相邻半平面的交点组成相邻半平面的交点组成半个凸多边形。半个凸多边形。

The polar form is used as the representation for one of the composite functions, whereas the Bernstein representation is used for another function. At the last part of this chapter, we consider the problem about generalized Bezier surface, which is defined in arbitrary convex polygon.

我们利用函数复合的思想去处理这个问题，被复合的两个函数一个用Polar形式表示，另外一个用Bernstein基形式表示，这样就可以充分利用Polar形式的多元仿射性，直接生成新的控制顶点，简化了证明过程。

A method to decide whether a vertex on a plane is in a convex polygon or not is presented according to the sign of the third dimension element of cross product of two vect...

引入利用向量叉积符号判定三角形的方向，进而判别平面上一点是否在凸多边形内的方法，简化了计算。

Lilliputian frontier is a convex polygon with non-zero area.

小人国的边境为凸多边形性状（面积不为0 with non-zero area？？

The formula for area of ellipsoidal triangle on earth ellipsoid by means of geodesic coordinate is derived in this paper. It is showed that the primary term is identical with the formula for area of plane triangle by planimetric rectangular coordinate in three angular point, while the expression of remainder terms has also regularity of its form. The presented formula can be applicable also to convex polygon on earth ellipsoid.

本文推导出用三顶点的测地坐标计算地球椭球面上三角形面积的公式，公式表明，其主项的表示式与按平面坐标求面积的计算式完全一致，而附加项的表示式亦有规律可循，因此该公式的适用范围可由椭球面三角形推广至椭球面上任意凸多边形。

Cross section is a set of polygons and for this reason some relative algorithms for polygon are studied firstly. New algorithms for orientation and inclusion test for simple polygon are proposed. And Ghosh's convex hull algorithms for simple polygon and convex polygons, Subramanian's triangulation algorithm for arbitrary planar domain and O'Rourke's intersection algorithm for convex polygons are modified to make them more robust.

断层轮廓为简单多边形，首先对多边形的一些相关算法进行了研究，提出了一种判断简单多边形方向及点在多边形内外的新方法，改进了Subramanian的平面多连通域的三角划分方法、Ghosh的多边形的凸包及多个多边形的凸包算法和O'Rourke的凸多边形的求交算法。

Considering the triangulation algorithm based only on the determination of convex-concave vertices is restricted to simple polygons, this paper presents a triangulation algorithm for the general plane polygon GTP(General Triangulation of Polygons) based on determination of convex-concave vertices and connecting the outer border of a polygon with its inner borders.

摘 要：针对基于凹凸顶点判定的三角剖分算法适用范围有限的缺点，提出了将凹凸顶点判定与连接多边形内外边界相结合的适用任意平面多边形的三角剖分算法GTP(General Triangulation of Polygons)。

Star sensor ; star pattern identification ; convex polygon ; algorithm

星敏感器；星图识别；凸多边形；算法；弹上星表

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。