查询词典 convex polygon

Local topological information is imported to the altered polygon in this new algorithm.The arcs which are joined in the same node are ordered by means of bina sorting tree,and the minimal polygons are built by the right sequence of arcs,then polygon overlaying is finished.

通过在无拓扑矢量数据中局部引入拓扑关系，对同一结点连接的弧段，采用二叉树方法进行排序，构建最小多边形，完成无拓扑信息的矢量图形的重组，并对新算法与已有算法的结构进行了对比。

A simple polygon is a polygon with no two non-consecutive edges intersecting.

一个简单的多边形是一个没有两个非连续边缘交叉多边形。

DirectX framework code, rendering a simple polygon, but this would be sufficient, because any complex graphics can be used to construct the polygon.

详细说明： Directx框架代码，渲染了一个简单的多边形，但是这个就足够了，因为任何复杂的图形都可以用多边形来构造。

The given method takes the Hermite interpolation curvcs and the cubic non-uniform B-spline curves as the special cases and unifies the representation of the curves interpolating the control polygon and the cubic non-uniform B-spline curves approximating the control polygon.

所给方法以Hermite型插值曲线和非均匀三次B样条曲线为特殊情形，将插值于控制点的曲线和逼近于控制多边形的非均匀B样条曲线统一起来。

At the same time the author points out that the polygon vertexes can be sorted clockwise or anticlockwise by judging the sign of the vector polygon area.

同时指出可以通过判断矢量多边形面积的正负值将多边形的顶点按照顺时针或逆时针方向排序。

Polygon Filling Algorithm typical scan line mainly include filling algorithm and contour filling algorithm domain signs for the document vector polygon filling algorithm for the scan line fill algorithm.

详细说明：典型的多边形填充算法主要包括扫描线填充算法和轮廓标志域填充算法，适用于矢量多边形文件的填充算法为扫描线填充算法。

From a uncertain point which located outside of the figure to draw radial, according to the junction of radial and polygon to judge the internal and outside relationship; Boundary algebra filling, a vector convert to raster arithmetic which based on integral thought, suit for polygon vector convert which

录拓扑关系的多边形矢量数据转换，方法是由多边形边界上某点开始，顺时针搜索边界线，上行时边界左侧具有相同行坐标的栅格减去某值，下行时边界左侧所有栅格点加上该值，边界搜索完毕之后即完成多边形的转换。关系，并表示成矢量格式边界线的过程。步骤包括：多边形边界提取，即使用高通滤波将栅格图像二值化；边界线追踪，即对每个弧段由一个节点向另一个节点搜索；拓扑关系生成和去处多余点及曲线圆滑。

Some key algorithms were researched here: a "cut-and-sew" algorithm was presented here to resolve the reconstruction problem of adjacent section contour lines which different from shape and polygon vertex count; a random polygon triangulation algorithm based on CDT was studied to resolve the modeling problem of complex geological model with stones and holes inside; a grid-constraining algorithm of judging whether a point is in a polyhedron was studied here to construct the corresponding geological block model which constrained to wire frame model.

研究了构模过程中的若干关键算法：提出"切开-缝合"算法，解决了形状和顶点数目差异较大的相邻剖面轮廓线重构三维形体模型问题；研究了基于约束Delaunay三角剖分的任意多边形三角剖分算法，解决了含夹石或孔洞的复杂地质体构模问题；研究了判断点在多面体内的网格约束算法，以线框模型为约束构建了相应的地质块段体模型。

When the polygon-filling mode is ALTERNATE, the system fills the area between odd-numbered and even-numbered polygon sides on each scan line.

当多边形填充模式为&间隔的&，系统会在每个扫描行填充多边形奇数边和偶数边之间的区域

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。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？