摘要：OpenCASCADE微信公众号，欢迎大家关注交流OpenCASCADE. 阅读全文

摘要：Abstract. 本文介绍了参数曲面的第一基本公式，并应用曲面的第一基本公式，结合OpenCASCADE中计算多重积分的类，对任意参数曲面的面积进行计算。 Key Words. Parametric Curve, Parametric Surface, Gauss Integration, Global Properties 阅读全文

摘要：Jenkins in OpenCASCADE eryar@163.com Abstract. Jenkins是一个开源软件项目，是基于Java开发的一个持续集成工具，用于监控持续复制的工作，旨在提供一个开放易用的软件平台，使软件的持续集成变成可能。 Key Words. OpenCASCADE, J 阅读全文

摘要：Abstract. OpenCASCADE package BRepMesh can compute the Delaunay’s triangulation with the algorithm of Watson. It can be used for 2d plane or on surface by meshing in UV parametric space. The blog focus on the usage of the triangulation tool to triangulate 2d points. Key Words. BRepMesh, Delaunay Triangulation, 阅读全文

摘要：Abstract. 管道设计CAD系统中都有涉及到重量重心计算的功能，这个功能得到的重心数据主要用于托盘式造船时方便根据重心设置吊装配件。重量信息主要用于采购订货。本文主要介绍相关软件中重量重心功能，及重量重心计算实现原理。最后结合OpenCASCADE计算管道模型重量重心来验证。 Key Words. CoG, CentreOfMass, Piping CAD, Piping Design 阅读全文

摘要：Abstract. FreeType is required for text display in the 3D viewer. FreeType is a software font engine that is designed to be small, efficient, highly customizable, and portable while capable of producing high-quality output(glyph images). It can be used in graphics libraries, display servers, font conversion tools, text image generation tools, and many other products as well. The blog is focus on the FreeType usage in OpenCASCADE to convert text to BRep shape. Key Words. FreeType, OpenCASCADE, 阅读全文

摘要：Abstract. OpenCASCADE provides a simple twist drill bit modeling example in Tcl script. The blog will give a details of some key points, when you understand the key points, you can modeling the shape like that. Key Words. OpenCASCADE, Twist Drill Bit Modeling, Tcl 阅读全文

摘要：Abstract. Sometimes you want to split a shape by plane or even split a shape by a B Spline surface, OpenCASCADE provide a feature class BRepFeat_SplitShape to implement the function. The paper give a sample code to split a cylinder by plane. Key Words. Split Shape, BRep Feature Algorithms. 阅读全文

摘要：trackball, opengl 阅读全文

摘要：RvmTranslator6.0beta: Translate PDMS RVM to 3ds Max by MAXScript file. 阅读全文

摘要：Abstract. Bounding Volume Hierarchy(BVH) organizes geometric objects in the tree based on spatial relationships. Each node in the tree contains an axis-aligned bounding box of all the objects below it. Bounding volume hierarchies are used in many algorithms to support efficient operations on the sets of geometric objects, such as collision detection, ray-tracing, searching of nearest objects, and view frustum culling. The paper focus on the usage of BVH on TopoDS_Shape, and its application. K 阅读全文

摘要：Abstract. Starting from OCCT6.8.0 will include one more algorithm for solving global optimization problems. Its development has been triggered by insufficient performance and robustness of existing algorithm of minimization of curve-surface distance in Extrema package. The PSO, Algorithms in this family are stochastic, and this feature can be perceived as opposite to robustness. However, we found it was not only much faster than original deterministic one, but also more robust in complex real-wo 阅读全文

摘要：Abstract. OpenCASCADE provides the algorithm to implement of the intersection between two 2d conic curve. The conic is defined by its implicit quadaratic equation, so the intersection problem is become a polynomial roots finding problem. The paper focus on the two conic curve intersection algorithm implementation. Key Words. 2d conic intersection, conic equation 阅读全文

摘要：Abstract. OpenCASCADE provides the algorithm to implementation of the analytical intersection between a 2d line and another conic curve. The conic is defined by its implicit quadaratic equation, so the intersection problem is become a polynomial roots finding problem. The paper focus on the 2d line intersection another conic algorithm implementation. Key Words. 2d line intersection, conic 阅读全文

摘要：Abstract. OpenCASCADE provides the algorithm to search the intersection point between 3 planes. If two of the planes are parallel or identical, will get no result. Key Words. Plane Intersection,Gauss 阅读全文