几何造型器

几何造型系统是指能够定义、描述、生成几何模型,并能够进行交互编辑处理的系统称为几何造型系统。采用几何造型技术,可以将物体的形状及其各种属性存储在计算机内,形成该物体的几何模型。这样的几何模型是对原物体确切的数学表达,或对其某种状态的真实模拟。
OpenCASCADE Conic to BSpline Curves-Circle-卡核

OpenCASCADE Conic to BSpline Curves-Circle

OpenCASCADE Conic to BSpline Curves-Circle eryar@163.com Abstract. The conic sections and circles play a fundamental role in CAD/CAM applications. Undoubtedly one of the greatest a...
OpenCASCADE Root-Finding Algorithm-卡核

OpenCASCADE Root-Finding Algorithm

OpenCASCADE Root-Finding Algorithm eryar@163.com Abstract. A root-finding algorithm is a numerical method, or algorithm, for finding a value x such that f(x)=0, for a given functio...
OpenCASCADE Quaternion-卡核

OpenCASCADE Quaternion

OpenCASCADE Quaternion eryar@163.com Abstract. The quaternions are members of a noncommutative division algebra first invented by William Rowan Hamilton. The idea for quaternions o...
OpenCASCADE Interpolation - Lagrange-卡核

OpenCASCADE Interpolation – Lagrange

OpenCASCADE Interpolation - Lagrange eryar@163.com Abstract. Power basis polynomial is the most simple polynomial function. It also be called power series. OpenCASCADE provides bas...
OPEN CASCADE Gauss Least Square-卡核

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...
OPEN CASCADE Multiple Variable Function-卡核

OPEN CASCADE Multiple Variable Function

OPEN CASCADE Multiple Variable Function eryar@163.com Abstract. Multiple variable function with gradient and Hessian matrix is very very import in OPEN CASCADE optimization algorit...
Apply Newton Method to Find Extrema in OPEN CASCADE-卡核

Apply Newton Method to Find Extrema in OPEN CASCADE

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...
Function Set in OPEN CASCADE-卡核

Function Set in OPEN CASCADE

Function Set in OPEN CASCADE eryar@163.com Abstract. The common math algorithms library provides a C++ implementation of the most frequently used mathematical algorithms. These inc...
OpenCASCADE Expression Interpreter by Flex & Bison-卡核

OpenCASCADE Expression Interpreter by Flex & Bison

OpenCASCADE Expression Interpreter by Flex & Bison eryar@163.com Abstract. OpenCASCADE provide data structure of any expression, relation or function used in mathematics. Flex ...
C++ 应用程序性能优化-卡核

C++ 应用程序性能优化

C++ 应用程序性能优化 eryar@163.com 1. Introduction 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...
Bounding Volume Hierarchy BVH in OpenCASCADE-卡核

Bounding Volume Hierarchy BVH in OpenCASCADE

Bounding Volume Hierarchy BVH in OpenCASCADE eryar@163.com Abstract. Bounding Volume Hierarchy(BVH) organizes geometric objects in the tree based on spatial relationships. Each nod...
[转]C语言预处理命令详解-卡核

[转]C语言预处理命令详解

转载:https://www.cnblogs.com/clover-toeic/p/3851102.html 一  前言      预处理(或称预编译)是指在进行编译的第一遍扫描(词法扫描和语法分析)之前所作的工作。预处理指...