图核科技

摘要： 摘要Abstract：本文对网格数据结构作简要介绍，并结合使用OpenCascade中的数据结构，将网格数据在OpenSceneGraph中可视化。 关键字KeyWords：OpenCascade、OpenSceneGraph、Triangulation、Mesh Data Structure 阅读全文

摘要： Abstract. Rendering a generic surface is a two steps process: first, computing the points that will form the mesh of the surface and then, send this mesh to 3D API. Use the Triangle to triangulate the parametric space and then lifting map to the model 3D space. This is the main method to visualize the generic shaded surface. This paper show the OpenCascade triangulation of the parametric space and the map result: mesh in 3D model space. Use the method can visualize a generic surface. Key wor 阅读全文

摘要： Abstract. Triangle is a 2D quality mesh generator and Delaunay triangulator. Triangle was created as part of the Quake project in the school of Computer Science at Carnegie Mellon University by Jonathan R. Shewchuk. Triangle is a small C program and its Delaunay refinement algorithm for quality mesh generation is a hybrid one. It includes divide-and-conquer and incremental insertion algorithms and sweepline Delaunay triangulation algorithm. This paper is focused on the usage of the Triangle and 阅读全文

摘要： Abstract. MeshVS means Mesh Visualization Service. It can be used to representation mesh in different style, such as colored stress patterns mesh, mesh with text and mesh like vector(with arrow). So MeshVS usually used for CAE programming. This paper focus on the MeshVS usage. Key words. OpenCascade, Mesh, MeshVS, Colored stress Patterns 阅读全文

摘要： Abstract. BRep is short for Boundary Representation. Boundary Representation gives a complete description of an object by associating topological and geometric information for solid modeling. In this case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Cone BRep in OpenCascade, and also show how to use Tcl script to dump cone BRep info. Key words. OpenCascade, BRep, Boun 阅读全文

摘要： Abstract. BRep is short for Boundary Representation. Boundary Representation gives a complete description of an object by associating topological and geometric information for solid modeling. In this case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Torus BRep in OpenCascade, and also show how to use Tcl script to dump torus BRep info. Key words. OpenCascade, BRep, B 阅读全文

摘要： Abstract. BRep is short for Boundary Representation. Boundary Representation gives a complete description of an object by associating topological and geometric information for solid modeling. In this case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Cylinder BRep in OpenCascade, and also show how to use Tcl script to dump cylinder BRep info. Key words. OpenCascade, BR 阅读全文

摘要： Abstract. BRep is short for Boundary Representation. Boundary Representation gives a complete description of an object by associating topological and geometric information for solid modeling. In this case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the sphere BRep in OpenCascade, and also show how to use Tcl script to dump sphere BRep info. Key words. OpenCascade, BRep, 阅读全文

摘要： Abstract. BRep is short for Boundary Representation. Boundary Representation gives a complete description of an object by associating topological and geometric information for solid modeling. In this case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Box BRep in OpenCascade, and also show how to use Tcl script to dump box BRep info. Key words. OpenCascade, BRep, Bounda 阅读全文

摘要： 摘要Abstract：本文简要介绍了几何造型中的边界表示法（BRep），并结合程序说明OpenCascade中的边界表示的具体实现，即拓朴与几何的联系。对具有几何信息的拓朴结构顶点（vertex）、边（edge）、面（face）进行了详细说明。本文通过ACIS与OpenCascade进行对比来对拓朴（Topology）的概念进行说明。并通过示例程序，说明如何在OpenCascade中取得与一个拓朴对象相连的其他拓朴对象，包括父对象和子对象。 　　关键字Key Words：OpenCascade、ACIS、BRep、Topology、Geometry 阅读全文