查询词典 concave polygon

However, along with the use in a deep going way, most users find that the forest reserves map which is built by traditional vector data models in GIS is different from the real.:In traditional forest distribution map, we give tacit consent to the fact that the forest is represented by a polygon, whose boundary is taken as a abrupt change between different types and the interior of the polygon is regarded as uniform.

随着应用的深入，很多用户发现通过传统GIS的矢量模型模式构建的森林资源图上所表示的信息与客观世界中森林的分布是有差别的：基于传统的GIS矢量模型下构建的森林分布图中，多边形的边界默认为一种突变，同时森林内部被认为是均匀的。

If the new polygon intersects another polygon, we merge the two regions.

如果新的多边形相交另一多边形，我们合并这两个地区。

The intermediate frequency elbow piece formation technology basic technological process is: First welds a lateral section is the polygon many leng link shell or both sides seal many leng fan-shaped shells, after the interior flushes the full pressure medium, the serve intrinsic pressure, under the intrinsic pressure function the lateral section by the polygon gradually changes a full circle, ends in a circular link shell.

中频弯管成型技术基本工艺过程是：首先焊接一个横截面为多边形的多棱环壳或两端封闭的多棱扇形壳，内部冲满压力介质后，施以内压，在内压作用下横截面由多边形逐渐变成圆，最终成为一个圆形环壳。

At first monotone chain of polygon is spaned in the new algorithm. Second, the nonregular vertices are sorted by Y-coordinate. At last active monotone chain is established and filling of polygon is finished .

新算法首先生成多边形单调链，并对单调链尖点按Y坐标排序，最后建立活性单调链表，从而完成多边形的填充。

Polygon sorting in the light of depth often arises in eliminating hiddensurfaces of polyhedra, and the calculation to the polygon sorting is much more complex than that to number sorting.

多边形按深度排序是多面体消隐过程中常遇到的一个问题，这是一种比一般的数字排序复杂的排序。

Because of the false star existence, the biggest polygon is not necessarily the optimum match, this study introduced the concept of voting algorithm to the stars of the matched star triangles, the star polygon who takes stars with high match rate as a right identification, thus removed the false star disturbance.

因为有伪星的存在，此时的最大多边形不一定是最佳匹配，本研究引入了投票算法的理念，对组成星三角的导航星进行匹配率统计，选取匹配率高的星多边形作为正确识别，从而排除了伪星的干扰。

Five-pointed star, polygon, satellite round, rotating polygon.

五角星，多边形，卫星圆，旋转多边形。

The double decomposition polygon clipping method is brought forward based on polygon trapezoidal decomposition. By analyzing its time complexity, the case it applicable to and its accuracy, it is pointed out that the new clipping method has a lower complexity than the old methods and does not make mistakes in the case SutherLand-Hodgman algorithm would.

在多边形梯形剖分的基础上提出了双剖分多边形裁剪算法，并对算法的时间复杂度、适用范围和处理的正确程度进行分析，指出该算法的时间复杂度低于以往算法，在处理非自交叉的多边形时结果正确，不存在类似SutherLand-Hodgman等算法处理出错的问题。

For example, OpenGL does not directly support drawing a concave polygon.

举例来说，OpenGL的不直接支持画凹多边形。

At last, present a rapid and valid algorithm for decomposing concave polygon.

第四章图形变换，讨论一种基于象素的图形变换方法，并给出了具体的实现。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥