OpenCASCADE 参数曲线曲面面积 eryar@163.com Abstract. 本文介绍了参数曲面的第一基本公式,并应用曲面的第一基本公式,结合OpenCASCADE中计算多重积分的类,对任意参数曲面的面积进行计算. Key Words. Parametric Curve, Parametric Surface, Gauss Integration, Global Properties 1.Introduction 我们知道一元函数y=f(x)的图像是一条曲线,二元函数z=f(x,y)…

OpenCASCADE 参数曲面面积 eryar@163.com Abstract. 本文介绍了参数曲面的第一基本公式,并应用曲面的第一基本公式,结合OpenCASCADE中计算多重积分的类,对任意参数曲面的面积进行计算. Key Words. Parametric Curve, Parametric Surface, Gauss Integration, Global Properties 1.Introduction 我们知道一元函数y=f(x)的图像是一条曲线,二元函数z=f(x,y)的图…

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 surface). When you understand the pcurve of a surface, you can make a helix…

OpenCASCADE PCurve of Topological Face eryar@163.com Abstract. OpenCASCADE provides a class BRepBuilderAPI_MakeFace to build topological faces. A face maybe built from a surface, elementary surface from gp package, surface from Geom, from a wire and…

OpenCASCADE Make Primitives-Sphere eryar@163.com Abstract. The sphere is the simplest topology shape of the BRep structure. But there are several import concept of the sphere edges, such as degenerated edge and seam edge. So construct a sphere by cod…

OpenCASCADE Make Primitives-Box eryar@163.com Abstract. By making a simple box to demonstrate the BRep data structure of the OpenCASCADE. The construction method is different from BRepPrimAPI_MakeBox. In the paper construct the box from vertex, edge…

OpenCASCADE BRep vs. OpenNURBS BRep eryar@163.com Abstract. BRep short for Boundary Representation. First give the definition of the BRep, then compare the BRep mode between OpenCASCADE and OpenNURBS. There are 3 main representation method: use face/…

OpenCASCADE Gauss Integration eryar@163.com Abstract. Numerical integration is the approximate computation of an integral using numerical techniques. The numerical computation of an integral is sometimes called quadrature. The most straightforward nu…

OpenCascade Primitives BRep-Cone eryar@163.com Abstract. BRep is short for Boundary Representation. Boundary Representation gives a complete description of an object by associating topological and geometric information for solid modeling. In this cas…

OpenCascade Primitives BRep-Torus eryar@163.com Abstract. BRep is short for Boundary Representation. Boundary Representation gives a complete description of an object by associating topological and geometric information for solid modeling. In this ca…