查询词典 polygon

In this paper, a lot of research works of algorithms of mining CAD has been done. Many important mine specialty graph operation algorithms have been put forward. The main results are as follows: polygons cut out algorithm, two close polygons mutual, merge and subtract algorithm, polygon vector fill, any vector polygons area calculating and sequence polygons or multifold which has the direction and region area calculating, curve smoothing, graph element search for any region, graph element attrib collect in any region, parallel polygon or vector intersection-point push out or pull in, ore reserves and grade calculating for any type polygon, mine spatial data searching and boundary line tracking and automatic link algorithm etc.

论文在矿山图形算法研究方面做了大量的工作，提出了许多有价值的矿山专业图形运算算法，主要算法有：多边形裁剪算法、闭多边形的加、减、并算法、多边形的矢量填充算法、任意有向多边形、有向多连域、有向多边形序列面积算法、多种曲线光滑算法、任意区域的图元搜索算法、任意区域图元属性提取算法、多边形平行外推/内缩算法、任意多边形储量品位计算、矿山空间数据搜索算法、界线的自动追踪和连接等。

The sixth part: Studies on the dynamic changes of soil retention function value of ecosystem in YUYANG District. Utilized ERDAS8. 5 to interpret the remote sensing image and get LUCC data and vegetation information of YUYANG District. Utilized R2V5. 5 to digitize administrative map, topographic map, vegetation picture, soil distribution map and meteorological website map. Utilized ARCINFOR8. 3 to change every digitization layer to the same projection, to generate Tyson polygon, to structure DEM and do vector polygon overlay. Utilized ARC VIE W3. 3 to obtain the grid data topographic slope and slope length from DEM data of YUYANG District, and then, turned every coverage layer into grid layer and do grid polygon overlay to gain data about dynamic changes of value of soil retention of ecosystem in YUYANG District, at last, the author analyzed the features of the spatial-temporal changes and its reason.The seventh part: Studies on the dynamic changes of fixing drifting sand against wind function value of ecosystem in YUYANG District.

第六部分：榆阳区生态系统土壤保持功能价值动态变化研究；利用ERDAS8.5对遥感数据进行解译获得榆阳区土地利用数据和植被信息，利用R2V5.5数字化榆阳区政区图、地形图、植被图、土壤分布图及气象站点分布图，利用ARCINFOR8.3对各数字化图层进行投影转换、泰森多边形生成、DEM构建和叠加分析，利用ARCVIEW3.3从DEM数据中获取榆阳区的坡度、坡长面域数据，并将上述各图层格网化，然后通过栅格图层叠加分析和代数运算获取榆阳区生态系统土壤保持功能物质量和价值量时空动态变化数据，最后分析了其变化的时空特点及形成原因。

NParticle to polygon mesh conversion: Static and emitted Blobby Surface nParticles can be converted to polygon meshes. nParticle output meshes can be edited and manipulated like any other polygon.

n粒子转换为多边形网格：静止和发射的blobby surface n粒子都可以转换为多边形网格。n粒子输出的网格可以想任何其他多边形一样被编辑和操作。

A method of polygon simplification based on Strip-Tree in scaleless GIS is presented in this paper through an all-sided analysis of this problem. Maintaining the correctness of the polygon layer's topoloty, it simplifies the polygon layer according to the output scale.

在对此问题进行全面分析的基础上，提出了一种基于Strip-Tree的多边形图层化简策略，在保持输出数据拓扑结构正确的前提下化简多边形图层，且保持了较高的时空效率。

We study a polygon representation composed by the vertex angles and ratios of adjacent edge lengths, which is invariant to geometric transformations such as translation, rotation and scaling. The polygon is globally represented by a scale-invariant intrinsic matrix.

提出了由顶点转角和相邻边长比例构成的多边形伸缩内在量表示的方法，多边形从整体上由一个伸缩内在矩阵来表示，该表示方法具有平移、旋转和伸缩等几何不变性。

Secondly, some foundational arithmetic such as the division of concave polygon, the polygons boolean operation, the transform from circle to polygon, the pick-up of model top surface were designed particularly based on OpenGL.

然后，基于图形库OpenGL完成了包括凹多边形的分割、多边形的布尔运算、圆的多边形转化、模型上表面获取等基础算法；并针对已建模工艺设计了相应的仿真算法。

A discussion is presented on the error compensation of the reflecting planes of polygon s in accurate angular measurement using autocollimator and polygon s.

讨论了利用多面棱体和自准直仪进行精密角度检定时多面棱体工作面偏差的补偿问题，给出了工作面偏差补偿符号的判定方法。

This method will spilt the polygon and we can use this property to proceed Boolean operation of geometric polygon.

本论文中所使用的计算几何理论为二元空间分割法，此方法会对本身多边形进行分割，我们可以利用这个特性去进行几何图形的布林运算。

By using the position information of concave vertices, a new algorithm for finding the kernel of a simple polygon was proposed,which could automatically select concave vertex to clip against polygon to obtain the kernel.

利用凹顶点间的位置信息，提出一种自动选择凹顶点来裁剪多边形的新求核算法。

The implementation process of the algorithm is as follows: First, the scanning lines of each contour are generated, while the contour's shape can be divided into convex polygon and concave polygon, and the generating process of the scanning lines of each contour needs special treatments .

首先依次生成每个轮廓的轮廓扫描线，由于轮廓形状可能为凸多边形也可能为凹多边形，所以在生成各轮廓的扫描线时要增加一些特殊处理操作。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。