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。
BRep Builder-卡核

BRep Builder

BRep Builder eryar@163.com   1 Introduction 类BRep_Builder提供了创建、修改BRep模型的方法。使用这个类,你可以从底层自己构建BRep体,前提条件是你要对BRep模型的数据结构有一定理解...
OpenCASCADE DRAW Command Source-卡核

OpenCASCADE DRAW Command Source

OpenCASCADE DRAW Command Source eryar@163.com OpenCASCADE Draw Harness是基于Tcl脚本命令语言的工具,可以用来演示OCCT中的造型功能。Draw Harness中提供的命令基本包含了OCCT中所有的功能...
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...
Boolean operations between triangle meshes-卡核

Boolean operations between triangle meshes

Boolean operations between triangle meshes eryar@163.com Abstract. Boolean operations is one of basic and well known on 3D models. The operations are widely used in computer graphi...
清华笔记:计算共形几何讲义 (21)离散曲面曲率流 (Discrete Surface Ricci Flow)III-卡核

清华笔记:计算共形几何讲义 (21)离散曲面曲率流 (Discrete Surface Ricci Flow)III

以前章节,我们介绍了曲面曲率流的一种离散形式-离散Yamabe流,主要操作是顶点缩放(Vertex Scaling)来共形变换度量来实现目标曲率。在实践中,往往多面体曲面的三角剖分是固定的。如果给定一...
OpenCASCADE Ring Type Spring Modeling-卡核

OpenCASCADE Ring Type Spring Modeling

OpenCASCADE Ring Type Spring Modeling eryar@163.com Abstract. The general method to directly create an edge is to give a 3D curve as the support(geometric domain) of the edge. The ...
Delaunay Triangulation in OpenCascade-卡核

Delaunay Triangulation in OpenCascade

Delaunay Triangulation in OpenCascade eryar@163.com 摘要:本文简要介绍了Delaunay三角剖分的基础理论,并使用OpenCascade的三角剖分算法将边界BRep表示的几何体进行三角离散化后在OpenScene...
OpenCASCADE BRep vs. OpenNURBS BRep-卡核

OpenCASCADE BRep vs. OpenNURBS BRep

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 OpenCA...
Building OpenCascade on Windows with Visual Studio-卡核

Building OpenCascade on Windows with Visual Studio

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...
OpenCascade BRep Format Description-卡核

OpenCascade BRep Format Description

OpenCascade BRep Format Description eryar@163.com 摘要Abstract:本文结合OpenCascade的BRep格式描述文档和源程序,对BRep格式进行分析,详细说明BRep的数据组织形式。结合源程序,可以对Ope...
OpenCASCADE JT Assistant-卡核

OpenCASCADE JT Assistant

OpenCASCADE JT Assistant eryar@163.com Abstract. Siemens’ JT data format accepted as the world’s first ISO international standard for viewing and sharing lightweight 3D product i...
超材料设计中的共形几何-卡核

超材料设计中的共形几何

依随三维打印技术的推广成熟,增材制造工艺的日益普及,超材料设计的理论和方法蓬勃发展。超材料(meta-material)指的是自然界中所没有的一类具有特殊性质的人造材料。这类材料具有特异的光、...