这次课程，我们简单介绍曲面基本群（一维同伦群）的理论梗概。主要概念有基本群的定义，表示，计算。然后我们介绍覆盖空间理论，特别是万有覆盖空间理论，曲线同伦检测算法。【1】给出了课程的...

Building OpenCASCADE on Debian eryar@163.com Abstract. When you are familiar with OpenCASCADE on Windows, you should try it on Linux operating system, because of Debian is also ope...

OpenCASCADE 曲线向曲面投影 eryar@163.com   Abstract: Project a curve on a surface no matter the surface is a plane or BSpline Surface. The projected result curve are all BSpli...

Topology and Geometry in OpenCascade-Edge 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...

解析几何求交之圆与二次曲面 eryar@163.com   Abstract. OpenCASCADE provides the analytic intersection between a conic and a quadric in the package IntAna. Key Words. Analytic ge...

Make Helix Curve in OpenCASCADE eryar@163.com Abstract. OpenCASCADE does not provide helix curve directly, but you can build a helix curve by the pcurve of a surface(curve on surfa...

OpenGL Shader in OpenCASCADE eryar@163.com Abstract. As implementation of one of the strategic steps in OpenCASCADE visualization component development road-map, support for GLSL s...

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 geometr...

 1.ACISACIS是美国spatial technology公司的产品，是应用于CAD系统开发的几何平台。它提供从简单实体到复杂实体的造型功能，以及实体的布尔运算、曲面裁减、曲面过渡等多种编辑功能，还提供了...

Building OpenCascade on Windows with Visual Studio eryar@163.com   摘要Abstract：详细说明OpenCascade的编译配置过程，希望对你编译OpenCascacde有所...

Apply Newton Method to Find Extrema in OPEN CASCADE eryar@163.com Abstract. In calculus, Newton’s method is used for finding the roots of a function. In optimization, Newton’s me...

Two analytical 2d line intersection in OpenCASCADE eryar@163.com Abstract. OpenCASCADE geometric tools provide algorithms to calculate the intersection of two 2d curves, surfaces, ...