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清华笔记：计算共形几何讲义 （12）极值长度
图1. 圆柱面的共形模。拓扑等价的度量曲面是否共形等价，亦即拓扑同胚的带有黎曼度量的曲面间是否存在保角双射，这是一个微妙的问题。几何上，我们需要寻找共形变换下的全系不变量，通过比较不...
顾险峰
OPEN CASCADE Gauss Least Square
OPEN CASCADE Gauss Least Square eryar@163.com Abstract. The least square can be used to solve a set of n linear equations of m unknowns(n >= m). The OPEN CASCADE class math_Gaus...
eryar
OpenCASCADE Camera
OpenCASCADE Camera eryar@163.com Abstract. OpenCASCADE introduce a new class Graphic3d_Camera for the Visualization module. The camera class provides object-oriented approach to se...
eryar
Change Line Type in OpenCascade
Change Line Type in OpenCascade eryar@163.com 关键字KeyWords：OpenCascade,Line Aspect, Line Type 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...
eryar
Memory Management in Open Cascade
Open Cascade中的内存管理 Memory Management in Open Cascade eryar@163.com 一、C++中的内存管理 Memory Management in C++ 1. 引言 为了表现出多态，在C++中就会用到大量的指针和引用。指针...
eryar
OpenCascade Chinese Text Rendering
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 resul...
eryar
OpenCASCADE Rational Bezier Curves
OpenCASCADE Rational Bezier Curves eryar@163.com Abstract. Although polynomials offer many advantages, there exist a number of important curve and surface types which cannot be rep...
eryar
OpenSceneGraph in ActiveX by ActiveQt
OpenSceneGraph in ActiveX by ActiveQt eryar@163.com Abstract. Qt’s ActiveX and COM support allows Qt for Windows developers to access and use ActiveX controls and COM objects...
eryar
Intersection between a 2d line and a conic in OpenCASCADE
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 l...
eryar
Distribution of Data Through OCAF Tree
Distribution of Data Through OCAF Tree OCAF数据的分配 eryar@163.com 一、作者注 Annotation 本文档主要用于说明OCAF（Open CASCADE Application Framework）中数据模型的选择问题。另外，以...
eryar
OpenCASCADE Trihedron Law
OpenCASCADE Trihedron Law eryar@163.com Abstract. In differential geometry the Frenet-Serret formulas describe the kinematic properties of a particle moving along a continuous, dif...
eryar
Convert BSpline Curve to Arc Spline in OpenCASCADE
Convert BSpline Curve to Arc Spline in OpenCASCADE eryar@163.com Abstract. The paper based on OpenCASCADE algorithms to approximate the NURBS curve to arc spline. The method i...
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