OpenCASCADE Interpolation - Lagrange eryar@163.com Abstract. Power basis polynomial is the most simple polynomial function. It also be called power series. OpenCASCADE provides basic computation functions for polynomial functions, such as evaluate th…
OpenCascade B-Spline Basis Function eryar@163.com 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…
Create views of OpenCASCADE objects in the Debugger eryar@163.com Abstract. The Visual Studio Natvis framework lets you customize the way Visual Studio displays native types in debugger variable windows such as the Watch, Locals and Data Tips windows…
OpenCASCADE JT Assistant eryar@163.com Abstract. Siemens’ JT data format accepted as the world’s first ISO international standard for viewing and sharing lightweight 3D product information. OpenCASCADE JT Assistant is a viewer for files in JT format.…
OpenNURBS to OpenCASCADE eryar@163.com Abstract. The OpenNURBS initiative provides CAD/CAM/CAE and computer graphics software developers the tools to accurately transfer 3D geometry between applications. The OpenNURBS C++ source code is clean and fai…
OpenCASCADE DataExchange DWG eryar@163.com Abstract. DWG is a file format created in the 70’s for the emerging CAD applications. Currently it is the native file format of AutoCAD, a proprietary CAD program developed by Autodesk. Libredwg is a free C…
OpenCASCADE Conic to BSpline Curves-Parabola eryar@163.com Abstract. Rational Bezier Curve can represent conic curves such as circle, ellipse, hyperbola, .etc. But how to convert a conic curve to BSpline curve is still question, i.e. Represent a coni…
OpenCascade Chinese Text Rendering eryar@163.com Abstract. OpenCascade uses advanced text rendering powered by FTGL library. The FreeType provides vector text rendering, as a result the text can be rotated and zoomed without quality loss. FreeType al…
Mesh Data Structure in OpenCascade eryar@163.com 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 一.引言 Introduction 三角网格就是全部由三角形组成的多边形网格.多边形和三角网格在图形学和建…
Introduction of OpenCascade Foundation Classes Open CASCADE基础类简介 eryar@163.com 一.简介 1． 基础类概述 Foundation Classes Overview 本文将对Open CASCADE中的基础类进行介绍及如何使用基础类.更多信息可访问其官网:www.opencascade.org/support/training/. 基础类库提供了一些通用功能,如自动动态内存管理.集合.异常处理.泛型编程和plug-in的…
Hello World of OpenCascade eryar@163.com 摘要Abstract:以一个经典的Hello World程序为例开始对开源几何造型内核OpenCascade的学习. 关键字Key Words:OpenCascade.Qt.Hello World 一.引言 Introduction OpenCascade编译成功后,看着大量的代码,无从下手.本文以Hello World程序为例,详细说明使用OpenCascade进行编程需要注意的事项,以便对OpenCascade…
Package gp in the OpenCASCADE eryar@163.com China 一.简介 Introduction to Package gp gp是几何处理程序包(Geometric Processor package),简称gp.包gp提供以下功能: 代数计算:如坐标计算.矩阵计算: 基本解析几何元素:如变换.点.矢量.线.面.轴.二次曲线和初等曲面: 这些实体同时在二维和三维空间中定义,且包中的类都是非持续的(non-persistent),即这些类的实例都是以值的方式…
Hello World of OpenCascade Hello World of OpenCascade eryar@163.com 摘要Abstract:以一个经典的Hello World程序为例开始对开源几何造型内核OpenCascade的学习. 关键字Key Words:OpenCascade.Qt.Hello World 一.引言 Introduction OpenCascade编译成功后,看着大量的代码,无从下手.本文以Hello World程序为例,详细说明使用OpenCasc…
FreeType in OpenCASCADE eryar@163.com 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-qual…
路径规划 VS 轨迹规划 轨迹规划的目的是将输入的简单任务描述变为详细的运动轨迹描述.注意轨迹和路径的区别:Trajectory refers to a time history of position, velocity, and acceleration for each degree of freedom. The path provides a pure geometric description of motion. Path planning (global) The (geomet…
转自 http://www.cppblog.com/eryar/archive/2013/08/20/202678.html Topology and Geometry in OpenCascade-Vertex eryar@163.com 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.本文只对顶点数…
Intersection between 2d conic in OpenCASCADE eryar@163.com 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…
Intersection between a 2d line and a conic in OpenCASCADE eryar@163.com 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 quad…
