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多边形的顶点
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  “多边形的顶点”译为未确定词的双语例句
     Held proves that the inner Voronoi diagram of a simple polygon has at most n+k 2 vertices and 2(n+k) 3 edges, where n is the number of the polygon’s vertices and k is the number of reflex vertices.
     Held 证明了一个简单多边形的内部 Voronoi 图最多有 n+k 2 个顶点和 2(n+k) 3条边,其中 n 和 k 分别是多边形的顶点和内尖点数.
短句来源
     In addition, a simple and ideal way of sampling on cubic open uniform B_spline type curve is given: 3( n -1) equidistant sample points are taken from a parameter interval ( n is the number of vertex of a B_spline curve characteristic polygon).
     针对 3次准均匀B样条曲线 ,找到一个效果理想、操作简单的取样方案 :在参数区间上等距取 3(n - 1)个样本点 (n为B样条曲线特征多边形的顶点数 ) .
短句来源
     When fitting each contour line, the points measured by non - contact measuring system are as the top points about control polygon for forming EE spline curve.
     在拟合每个轮廓线时,先用非接触测量系统测出的数据反算出EE样条曲线控制多边形的顶点
短句来源
     The segmented Bézier curves are all shape preserving to their tangent polygon.
     曲线上的所有 Bézier曲线段的控制顶点由切线多边形的顶点直接计算产生 .
短句来源
     The control points of the B3-spline to be constructed are computed simply by the vertices of the given polygon.
     在算法中,所有的B3样条曲线的控制点可以通过对多边形的顶点简单计算产生。
短句来源
更多       
  相似匹配句对
     TRIANGULATION OF SIMPLE POLYGON BASED ON DETERMINATION OF CONVEX CONCAVE VERTICES
     基于凹凸顶点判定的简单多边形的三角剖分
短句来源
     Some Results about Median Point of Any Polygon and Orthocenter of Any Inscribed Polygon of a Circle
     关于多边形的顶点重心与圆内接多边形的垂心的若干结论
短句来源
     The Vertex Labeling on Graphs
     图的顶点标号
短句来源
     For a vertex set X C V(G), setE_G(X) = {uv(?)
     对顶点集X? ?
短句来源
     TRIANGULATION OF A POLYGON AND ITS APPLICATION
     多边形的三角剖分及应用
短句来源
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  vertex of a polygon
The proposed algorithm removes the center vertex of a polygon which consists of $${n \geq 3}$$ faces and represents that polygon with $${n-2}$$ faces.
      
At each vertex of a polygon to be environmentally mapped, a reflection vector from the eye to the surface is computed.
      
Here, each vertex of a polygon belongs to at most two sides.
      
The expansion is such that the maximum distortion on a vertex of a polygon is at most d/2.
      


This N/C language system as an applied software in CAM can process sculptured (fre3) surface to simplify the conplicated surface part programming. The format of its' statements conforms the description of set concept. These statements may give us a completed description about mathematical model, and aa intuitional and technological feature. The system written by FORTRAN Ⅳ has a hierachical modular construction, which is divided into three main sections: complier, mathematical processor, post processor. The mathematical...

This N/C language system as an applied software in CAM can process sculptured (fre3) surface to simplify the conplicated surface part programming. The format of its' statements conforms the description of set concept. These statements may give us a completed description about mathematical model, and aa intuitional and technological feature. The system written by FORTRAN Ⅳ has a hierachical modular construction, which is divided into three main sections: complier, mathematical processor, post processor. The mathematical processor provides users with three options: Coons surface, Be'zier surface, Ruled surface. In Coons surfaces' patch the twist vectors are derived from mixed "partial derivatives. And in Be'zier surface which may be derived or from Bs'zier polygonal vertices or from the data points (uniform) of a given surface. In additional statements to satisfy different users' demands the system provibes yet some special functions. There are also some options for users to select the output message.This system has been adopted in a factory which used it to process the fine blade dies. They got a better accuracy keeping surface tolerance less than 0.02~0.03m.m.

本语言系统作为计算机辅助制造中的一个应用软件,可以处理自由曲面,以简化复杂曲面的数控编程工作、语言格式符合曲面的集合描写概念。具有曲面数学模型的完整描述,同时又具有工艺性和直观性。系统主要用FORTRAN Ⅳ编写,为模块分层结构,共分三个主要模块:编译模块、数学处理模块、后置处理模块。数学处理可提供三种选择:COONS曲面、BEZIER曲面、直纹曲面。在COONS曲面块(PATCH)中扭矢由混合偏导数求出。在BEZIER曲面中用户可以给出多边形顶点或直接给出型值点(均匀分布)。系统还提供了某些特殊功能,以满足不同用户的需要。输出信息亦可有几种选择。

A multiple-knot method,which is based upon the nonuniform B-Spli-ne,is adoqted in this paper to design and fit the complex combined curves,we have solved the problam of reducing the order in a linear equation set for varieties of multiple knots in calculating inversely the vertices of a characteristic polygon,and have obtained a unified expres-sion.The program provided in this paper is flexible and convenient for fitting,designing and modifying the complex combined curves quickly in every possible case.This...

A multiple-knot method,which is based upon the nonuniform B-Spli-ne,is adoqted in this paper to design and fit the complex combined curves,we have solved the problam of reducing the order in a linear equation set for varieties of multiple knots in calculating inversely the vertices of a characteristic polygon,and have obtained a unified expres-sion.The program provided in this paper is flexible and convenient for fitting,designing and modifying the complex combined curves quickly in every possible case.This method can offer a more universal tool for using B-Spline in computer-aided geometric design and drawing.

本文在非均匀B样条的基础上,采用重节点方法设计和拟合复杂组合曲线。对于各种不同的重节点情况,解决了反求特征多边形顶点时线性方程组的降秩问题,并建立了统一表达式。由于考虑到使用中可能遇到的各种情况,程序通用性强,使用方便,能快速地拟合、设计、修改复杂组合曲线,为计算机辅助几何设计与绘图中应用B样条提供了一种具有较大灵活性的方法。

A multiple-knot method based on a non-uniform B-spline is adopted to design and fit complex combined curves.We have solved the problem of reducing the order in a linear equation set for varieties of multiple knots in inverse calculation for the vertices of a characteristic polygon and obtained an unified expression.The program provided in this paper is flexible and convenient for fitting,designing and modifying complex combined curves quickly in every possible case.This method can offer a more universal tool...

A multiple-knot method based on a non-uniform B-spline is adopted to design and fit complex combined curves.We have solved the problem of reducing the order in a linear equation set for varieties of multiple knots in inverse calculation for the vertices of a characteristic polygon and obtained an unified expression.The program provided in this paper is flexible and convenient for fitting,designing and modifying complex combined curves quickly in every possible case.This method can offer a more universal tool for using the B-spline in computer-aided geometric design and drawing.

本文在非均匀B样条的基础上,采用重节点方法设计和拟合复杂组合曲线。对于各种不同的重节点情况,解决了反求特征多边形顶点时线性方程组的降秩问题,并建立了统一表达式。由于考虑到使用中可能遇到的各种情况,程序通用性强,使用方便,能快速地拟合、设计、修改复杂组合曲线,为计算机辅助几何设计与绘图中应用B样条提供了一种具有较大灵活性的方法。

 
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