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摘要: 上海地目信息科技有限公司招聘OpenCASCADE相关图形开发人员,有兴趣的可直接与hr联系。阅读全文
posted @ 2016-12-09 22:14 opencascade 阅读(154) 评论(0) 编辑
摘要: Abstract. OpenCASCADE7.1.0 introduces new built-in interactive object AIS_Manipulator providing interface for moving objects within 3D viewer. The class features three kinds of transformation modes for attached objects: translation through axis, scaling within axis, rotation around axis. The object can be activated using vmanipulator command within Draw Test Harness. Key Words. OpenCASCADE, 3D Viewer Interactive, Model Editor, Manipulator阅读全文
posted @ 2016-12-08 23:12 opencascade 阅读(156) 评论(0) 编辑
摘要: Abstract. The paper based on OpenCASCADE algorithms to approximate the NURBS curve to arc spline. The method is most useful in numerical control to drive the cutter along straight line or circular paths. Or in the shipbuilding industry to manufacture section bar for cold frame bender. Key Words. NURBS, Biarc approximation, arc spline阅读全文
posted @ 2016-11-22 23:16 opencascade 阅读(100) 评论(0) 编辑
摘要: Abstract. Qt’s ActiveX and COM support allows Qt for Windows developers to access and use ActiveX controls and COM objects provided by any ActiveX server in their Qt applications. Make their Qt application available as COM servers, with any number of Qt objects and widgets as COM objects and ActiveX controls. Make OpenSceneGraph to ActiveX controls then you can use it in other place, like IE. Key Words. OpenSceneGraph, ActiveX, COM, ActiveQt阅读全文
posted @ 2016-11-11 23:39 opencascade 阅读(110) 评论(0) 编辑
摘要: Abstract. The TopLoc package of OpenCASCADE gives resources to handle 3D local coordinate systems called Locations. A Location is a composition of elementary coordinate systems, each one is called a Datum. The Location keeps track of this composition. The paper will use the Draw Test Harness to illustrate the Location concept. Key Words. Transformation, Location, Local Coordinate Systems阅读全文
posted @ 2016-09-07 18:35 opencascade 阅读(316) 评论(2) 编辑
摘要: wrap curve to surface.阅读全文
posted @ 2016-08-16 23:16 opencascade 阅读(237) 评论(0) 编辑
摘要: 对于几何造型内核OpenCASCADE,由于会涉及到大量的数值算法,如矩阵相关计算,微积分,Newton迭代法解方程,以及非线性优化的一些算法,如BFGS,FRPR,PSO等等用于多元函数的极值求解,所以这些数值算法的性能直接影响系统的性能。软件的性能优化是计算机软件开发过程中需要一直关注的重要因素,因此有必要学习下C++应用程序性能优化的方法。 在网上寻找相关资料时,发现这方面的资料也很少,最后发现一本由电子工业出版社出版的《C++应用程序性能优化方法》,从中可以学习下IBM的性能优化方法。 本文主要结合《C++性能优化方法》并结合代码实例来说明内存优化处理对程序性能的影响。看完本书,其实发现C++性能优化方法主要还是依赖的计算机相关的基础知识,比如说计算机操作系统,数据结构与算法等等。阅读全文
posted @ 2016-07-31 13:50 opencascade 阅读(947) 评论(0) 编辑
摘要: Abstract. OpenCASCADE provide data structure of any expression, relation or function used in mathematics. Flex and Bison are tools for building programs that handle structured input. They were originally tools for building compilers, but they have proven to be useful in many other areas. The Expression Interpreter in OpenCASCADE is made by Flex and Bison. So let’s know something about Flex and Bison. Key Words. OpenCASCADE, Expression Interpreter, Flex, Bison阅读全文
posted @ 2016-05-27 23:13 opencascade 阅读(170) 评论(0) 编辑
摘要: 本文主要描述如何修改FreeCAD的Branding,从而使自己能基于FreeCAD灵活的架构快速开发出自己的应用程序。通过修改FreeCAD的Branding甚至启动画面,从而使程序看上去更像是自己开发的。阅读全文
posted @ 2016-05-09 22:27 opencascade 阅读(198) 评论(0) 编辑
摘要: FreeCAD是一个参数化的三维造型软件,主要用于任意大小的实际模型的设计。参数化的建模方式可以通过修改相关参数从而方便地修改你的设计。FreeCAD是开源软件,并提供了便利地自定义方式,也提供了脚本,从而根据自己的需要去扩展功能。FreeCAD是跨平台(Windows, Mac和Linux),可以读写许多开放的模型文件,如STEP,IGES,STL,SVG,DXF,OBJ,IFC,DAE等。 如果说学习OpenCASCADE可以了解一些几何内核底层的算法,那么学习FreeCAD则可以用来实现一些具体的功能,从而将三维的技术应用到实际的生活中去,创造出有意义的功能。 本文详细说明如何在Windows平台上编译FreeCAD源码。如果你已经可以正常编译OpenCASCADE这种开源库的源码,那么编译FreeCAD还是很简单的。阅读全文
posted @ 2016-05-08 11:21 opencascade 阅读(463) 评论(2) 编辑
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