摘要：Abstract. Draw is a command interpreter based on Tcl/Tk and a graphical system used to test and demonstrate OpenCascade modeling libraries. It provides a flexible and easy to use means of testing and demonstrating the OCCT modeling libraries. By a given command of Tcl, you can find the implentation code for that command by OpenCascade, the code could be as a demo to use of OCC modeling libraries. So this is the most effectively way of use OpenCascade. Key words. OpenCascade, Tcl/Tk, Testing, 阅读全文

摘要：Abstract. Delaunay Triangulation is the core algorithm for mesh generation. By Delaunay Triangulator you can make a general method to visualize geometry surfaces, so does OpenCascade. The paper focus on the geometry surfaces visualization, include the surfaces with holes. Key words. OpenCascade, Delaunay Triangulator, OpenSceneGraph, Mesh, NURBS 阅读全文

摘要：Abstract. B-splines are quite a bit more flexible than Bezier curves. This flexibility comes from the fact that you have much more control over the basis functions. For Bezier curves that each control point had an effect on each point on the curve; likewise the number of control points affected the degree of the curve. For the sake of flexiblity, you would like to be able to arbitrarily set the degree of the curve and to also determine the range of the affect each control point has. B-splines al 阅读全文

摘要：Abstract. OpenCascade use the Jacobi method to find the eigenvalues and the eigenvectors of a real symmetric square matrix. Use class math_Jacobi to computes all eigenvalues and eigenvectors by using Jacobi method. The exception NotSquare is raised if the matrix is not square. No verification that the matrix is really symmetric is done. Key words. Eigenvalues, Eigenvectors, OpenCascade, Matrix, Jacobi method, 阅读全文

摘要：Abstract. The ModelDataExchange import utility enables the user to import geometric models of equipment into 3D models within Design. The input models files format are STEP, IGES, STL .etc. The imported model is saved in polyhedron of the equipment. Key Words. ModelDataExchange, Import, MEI, Mechanical Equipment Inteface 阅读全文

摘要：摘要：本文简要介绍了Delaunay三角剖分的基础理论，并使用OpenCascade的三角剖分算法将边界BRep表示的几何体进行三角离散化后在OpenSceneGraph中显示。 关键字：Delaunay Triangulation、OpenCascade、OpenSceneGraph 阅读全文

摘要：摘要Abstract：分析幂基曲线即多项式曲线在OpenCascade中的计算方法，以及利用OpenSceneGraph来显示OpenCascade的计算结果，加深对多项式曲线的理解。 关键字Key Words：OpenCascade、PLib、OpenSceneGraph、Polynomial Library 阅读全文

摘要：Abstract. One of the important features of the boost polygon library is the implementation of the generic sweepline algorithm to construct Voronoi diagrams of points and linear segments in 2D(developed as part of the Google Summer of Code 2010 program). Voronoi diagram data structure has applications in image segmentation, optical character recognition, nearest neighbor queries execution. It is closely related with the other computational geometry conectps: Delaunay triangulation, medial axis, s 阅读全文

摘要：Abstract. In mathematics a Voronoi diagram is a way of dividing space into a number of regions. A set of points, called seeds, sites, or generators is specified beforehand and for each seed there will be a correspoinding region consisting of all points closer to that seed than to any other. The regions are called Voronoi cells. It is dual to the Delaunay triangulation. It is named after Georgy Voronoy, and is also called a Voronoi tessellation, a Voronoi decomposition, a Voronoi partition, or a 阅读全文

摘要：Abstract. AVEVA Review is used to 3D model visualization for plant or ship design, construction and operation. Taking data from a range of 3D design systems, AVEVA Review delivers a virtual reality view of a plant or ship which users from all disciplines can freely navigate to view areas of interest, communicate ideas or undertake reviews. Use AVEVA .Net can extract model from DESIGN database, and use AnyCAD .Net can visualize the model. This paper mainly focus on the usage of AnyCAD .Net, and a 阅读全文

摘要：在OpenCascade的显示模块中，可以设置线型、消隐方式和离散精度等属性。这些属性都是在AIS_Drawer中设置。 阅读全文

摘要：摘要Abstract：本文简要介绍了适配器模式（adapter pattern），并结合程序实例对OpenCascade中的拓朴与几何的适配器的使用进行说明。 　　 　　关键字Key Words：OpenCascade、BRep、Topology、Geometry、Adapter 阅读全文

摘要：Abstract. C++ lets us redefine the meaning of the operators when applied to objects. It also lets us define conversion operations for class types. Class-type conversions are used like the built-in conversions to implicitly convert an object of one type to another type when needed. A conversion operator provides a way for you to define how an object can be converted automatically to a different type. The paper gives some conversion operators examples in OpenCascade. Key words. OpenCascade, Con 阅读全文

摘要：Use Model Data Exchange Addin to export structure models for PDMS. 阅读全文

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