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 include: algorithms to solve a set of linear algebraic equations, algorit…

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 method is applied to find the roots of the derivative. OPEN CASCADE implem…

前台: <form id="form1" runat="server"> <div> 省 <select id="Province"> <option>请选择</option> </select> 市 <select id="City"> <option>请选择</option> </select> 地区 &…

```sql --定义可被SQL语句调用的子程序 create or replace function getempdept(       p_empno emp.empno%type )return varchar2 as v_dname dept.dname%TYPE; begin   select b.dname into v_dname from emp a,dept b   where a.deptno=b.deptno and a.empno=p_empno;   return v_…

1. 实现参照完整性      指若两个表之间具有主从关系(即主外键关系),当删除主表数据时,必须确保相关的从表数据已经被删除.  当修改主表的主键列数据时,必须确保相关从表数据已经被修改.为了实现级联删除,可在定义外部键约束时指定ON DELETE CASCADE关键字  alter table emp add constraint fk_deptno foreign key (deptno) references dept(deptno) on delete cascade; 实现级联更新,…

引入css文件 <link rel="stylesheet" type="text/css" href="js/assets/global/plugins/jstree/dist/themes/default/style.min.css" /> 引入js文件 <script type="text/javascript" src="js/assets/global/plugins/jstree/dis…

现在我们在工作中,在开发中都会或多或少的用到图表统计数据显示给用户.通过图表可以很直观的,直接的将数据呈现出来.这里我就介绍说一下利用百度开源的echarts图表技术实现的具体功能. 1.对于不太理解echarts是个怎样技术的开发者来说,可以到echarts官网进行学习了解,官网有详细的API文档和实例供大家参考学习. 2.以下是我在工作中实现整理出来的实例源码: 公用的支持js文件 echarts.js.echarts.min.js,还有其他的图表需要支持的js文件也可以到官网下载 echa…

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 algorithms. In order to understand these optimization algorithm better, let’s…

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…

Open Cascade Data Exchange STL eryar@163.com 摘要Abstract:介绍了三维数据交换格式STL的组成,以及Open Cascade中对STL的读写.并将Open Cascade读进来的STL的三角面片在OpenSceneGraph中显示. 关键字Key Words:STL, Open Cascade, OpenSceneGraph, Data Exchange STL(the Stereo Lithograpy)是快速原型系统所应用的标准文件类型.它…