几何结构

Human machine interfaces of tank driver cabin was compartmentalized based on the System Analysis and Ergonomic Method, the constitution method of 3D model was put forward by using the method related with computer graphics.

按照系统分析和人机工程学原理，对坦克驾驶舱人机界面的层次结构进行了划分，利用计算机图形学的相关方法，提出了坦克驾驶舱人机界面各组成部分的三维模型的构建方法，建立了坦克驾驶舱人机界面的元件库模型和人体模型；应用OpenGL三维计算机图形软件接口实现了坦克驾驶舱人机界面几何模型的构建，完成了坦克驾驶舱人机界面几何建模软件的开发。

Human-machine interfaces of tank driver cabin was compartmentalized based on the System Analysis and Ergonomic Method, the constitution method of 3D model was put forward by using the method related with computer graphics. The parts' libraries of human-machine interfaces and human body model were carried out. Finally, the design software of human-machine interface of tank driver cabin was developed on the basis of OpenGL, which established the foundation for the virtual design of human-machine interface of tank driver cabin.

按照系统分析和人机工程学原理，对坦克驾驶舱人机界面的层次结构进行了划分，利用计算机图形学的相关方法，提出了坦克驾驶舱人机界面各组成部分的三维模型的构建方法，建立了坦克驾驶舱人机界面的元件库模型和人体模型；应用OpenGL三维计算机图形软件介面实现了坦克驾驶舱人机界面几何模型的构建，完成了坦克驾驶舱人机界面几何建模软件的开发。

In the aspect of structure line detection, the main idea is to separate the roof structure lines into two parts, one is for external contours and the other is for internal structure lines. The external contours were extracted using Hough transform and other geometric conditions. The internal structure lines were extracted by any two adjacent roof faces intersecting each other. Finally, the two kinds of structure lines were combined to construct the roof shapes.

而在结构线的侦测方面，主要将屋顶结构线分为两个部份来进行，第ㄧ为外部轮廓线，萃取的方式是利用霍夫转换及其他附加几何条件来进行；第二为内部结构线，萃取的方式为利用相邻屋顶面的交会来获得；最后再将此二种特徵线合并在一起，进而重建完整的屋顶面形状。

Finally, the locations of independent buildings were obtained. In the aspect of structure line detection, the main idea is to separate the roof structure lines into two parts, one is for external contours and the other is for internal structure lines. The external contours were extracted using Hough transform and other geometric conditions. The internal structure lines were extracted by any two adjacent roof faces intersecting each other.

而在结构线的侦测方面，主要将屋顶结构线分为两个部份来进行，第ㄧ为外部轮廓线，萃取的方式是利用霍夫转换及其他附加几何条件来进行；第二为内部结构线，萃取的方式为利用相邻屋顶面的交会来获得；最后再将此二种特徵线合并在一起，进而重建完整的屋顶面形状。

Results obtained from numerical calculation show that in the range of engineering practice the wave force acting on double-layered perforated caisson breakwaters is less than that of single-layered perforated caisson breakwaters.

数值计算结果表明，在工程常见的范围内，双层开孔板沉箱能够降低波浪对结构的作用力，是否采用双层开孔板结构主要取决于开孔结构的几何尺寸。

In this project, we propose a novel 3D morphing technique that avoids creating a merged embedding that contains the faces, edges and vertices of two given embeddings. This novel 3D morphing technique dynamically adds or removes vertices to gradually transform the connectivity of 3D polyhedrons from a source model into a target model and simultaneously creates the intermediate shapes.

中文摘要在本专题研究计画中，我们提出一项新的三维物体变形技术，此变形技术所能处理的资料型态为two-manifold 之三维网格物体，此技术不需产生一个共有的高复杂度的网格物体或对原始物体进行重新网格化以产生相同连接关系，取而代之的是直接进行来源与目的物体之间几何与连接结构之转换，我们称此项新技术称为渐进式连接结构之转换(progressive connectivity transformation)，此技术藉由动态增加或移除顶点的方式从来源物体到目的物体逐渐地进行连接结构转换同时使用线性位置内差来产生一序列中间物体。

In this project, we propose a novel 3D morphing technique that avoids creating a merged embedding that contains the faces, edges and vertices of two given embeddings. This novel 3D morphing technique dynamically adds or removes vertices to gradually transform the connectivity of 3D polyhedrons from a source model into a target model and simultaneously creates the intermediate shapes.

在本专题研究计画中，我们提出一项新的三维物体变形技术，此变形技术所能处理的资料型态为two-manifold 之三维网格物体，此技术不需产生一个共有的高复杂度的网格物体或对原始物体进行重新网格化以产生相同连接关系，取而代之的是直接进行来源与目的物体之间几何与连接结构之转换，我们称此项新技术称为渐进式连接结构之转换(progressive connectivity transformation)，此技术藉由动态增加或移除顶点的方式从来源物体到目的物体逐渐地进行连接结构转换同时使用线性位置内差来产生一序列中间物体。

Based on the limitations of OBB, this thesis proposes an optimizing overlap test algorithm of bounding box and primitive. This method eliminates the bounding boxes of leaf nodes and streamlines the OBB hierarchical layer. This method also introduces a separating axis theory in the overlapping test between the primitives in order to accelerate the velocity.

针对基于OBB碰撞检测算法存在的缺陷，研究利用包围盒与基本几何元素相交测试的优化方法，消除叶子结点包围盒，精简OBB层次结构；同时在基本几何元素相交测试中引入类似分离轴的方法，加快检测速度。

The modern study of space generalizes these ideas to include higher-dimensional geometry, non-Euclidean geometries (which play a central role in general relativity ) and topology .

现代研究空间推广这些想法，包括高维几何，非欧几里德几何（其中发挥核心作用，广义相对论）和拓扑结构。

The procedure is important because we should analyze the geometric stability of not only the whole structures but the substructures that appear in construction.

掌握几何稳定性的判别方法很重要，因为不仅是成形后的索穹顶结构，就是在进行结构施工成形分析时，也会经常考虑到已安装的构件组成的次结构是否能够通过预应力&硬化&。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。