eryar

PipeCAD - Plant Piping Design Software.
RvmTranslator - Translate AVEVA RVM to OBJ, glTF, etc.
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Plant Design Review Based on AnyCAD

     摘要: Abstract. AVEVA Review is used to 3D model visualization for plant or ship design, construction and operation. Taking data from a range of 3D design systems, AVEVA Review delivers a virtual reality view of a plant or ship which users from all disciplines can freely navigate to view areas of interest, communicate ideas or undertake reviews. Use AVEVA .Net can extract model from DESIGN database, and use AnyCAD .Net can visualize the model. This paper mainly focus on the usage of AnyCAD .Net, and a  阅读全文

posted @ 2014-04-17 20:56 eryar 阅读(4348) | 评论 (0) | 编辑 收藏

Conversion Operators in OpenCascade

     摘要: Abstract. C++ lets us redefine the meaning of the operators when applied to objects. It also lets us define conversion operations for class types. Class-type conversions are used like the built-in conversions to implicitly convert an object of one type to another type when needed. A conversion operator provides a way for you to define how an object can be converted automatically to a different type. The paper gives some conversion operators examples in OpenCascade.

Key words. OpenCascad  阅读全文

posted @ 2014-04-12 19:21 eryar 阅读(2305) | 评论 (0) | 编辑 收藏

AVEVA Model Data Exchange Exports Structure Models

     摘要: Use Model Data Exchange Addin to export structure models for PDMS.
配置方法见：http://www.cppblog.com/eryar/archive/2013/05/01/199875.html
更新记录：http://www.cppblog.com/eryar/archive/2013/09/11/203182.html  阅读全文

posted @ 2014-04-10 20:30 eryar 阅读(1921) | 评论 (0) | 编辑 收藏

Mesh Algorithm in OpenCascade

     摘要: Abstract. Rendering a generic surface is a two steps process: first, computing the points that will form the mesh of the surface and then, send this mesh to 3D API. Use the Triangle to triangulate the parametric space and then lifting map to the model 3D space. This is the main method to visualize the generic shaded surface. This paper show the OpenCascade triangulation of the parametric space and the map result: mesh in 3D model space. Use the method can visualize a generic surface.

K  阅读全文

posted @ 2014-04-06 14:56 eryar 阅读(7362) | 评论 (6) | 编辑 收藏

2014-Blue Horse in PDMS

     摘要: 2014-Blue Horse in PDMS  阅读全文

posted @ 2014-03-31 22:55 eryar 阅读(1289) | 评论 (0) | 编辑 收藏

Triangle - Delaunay Triangulator

     摘要: Abstract. Triangle is a 2D quality mesh generator and Delaunay triangulator. Triangle was created as part of the Quake project in the school of Computer Science at Carnegie Mellon University by Jonathan R. Shewchuk. Triangle is a small C program and its Delaunay refinement algorithm for quality mesh generation is a hybrid one. It includes divide-and-conquer and incremental insertion algorithms and sweepline Delaunay triangulation algorithm. This paper is focused on the usage of the Triangle and   阅读全文

posted @ 2014-03-29 16:43 eryar 阅读(13417) | 评论 (17) | 编辑 收藏

OpenCascade MeshVS Usage

     摘要: Abstract. MeshVS means Mesh Visualization Service. It can be used to representation mesh in different style, such as colored stress patterns mesh, mesh with text and mesh like vector(with arrow). So MeshVS usually used for CAE programming. This paper focus on the MeshVS usage.

Key words. OpenCascade, Mesh, MeshVS, Colored stress Patterns  阅读全文

posted @ 2014-03-27 18:52 eryar 阅读(4943) | 评论 (8) | 编辑 收藏

OpenCascade Primitives BRep-Cone

     摘要: 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 case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Cone BRep in OpenCascade, and also show how to use Tcl script to dump cone BRep info.

Key words. OpenCascade, BRep  阅读全文

posted @ 2014-03-25 18:01 eryar 阅读(1804) | 评论 (0) | 编辑 收藏

OpenCascade Primitives BRep-Torus

     摘要: 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 case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Torus BRep in OpenCascade, and also show how to use Tcl script to dump torus BRep info.

Key words. OpenCascade, BR  阅读全文

posted @ 2014-03-23 17:07 eryar 阅读(1689) | 评论 (0) | 编辑 收藏

OpenCascade Primitives BRep-Cylinder

     摘要: 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 case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Cylinder BRep in OpenCascade, and also show how to use Tcl script to dump cylinder BRep info.

Key words. OpenCasca  阅读全文

posted @ 2014-03-23 11:09 eryar 阅读(2051) | 评论 (0) | 编辑 收藏

OpenCascade Primitives BRep - Sphere

     摘要: 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 case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the sphere BRep in OpenCascade, and also show how to use Tcl script to dump sphere BRep info.

Key words. OpenCascade,   阅读全文

posted @ 2014-03-22 12:24 eryar 阅读(2318) | 评论 (0) | 编辑 收藏

OpenCascade Primitives BRep - Box

     摘要: 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 case, objects are described by their boundaries. There are two types of information in BRep: Topological information and Geometric information. This paper is concerned with the Box BRep in OpenCascade, and also show how to use Tcl script to dump box BRep info.

Key words. OpenCascade, BRep,   阅读全文

posted @ 2014-03-19 19:00 eryar 阅读(3393) | 评论 (0) | 编辑 收藏

PCurve - Curve on Surface

     摘要: Abstract. 本文通过给出曲面上曲线PCurve的定义来对OpenCascade中的Curve On Surface进行理解，并介绍了OpenCascade对应的类BRep_CurveOnSurface实现。通过Tcl脚本输出的球的拓朴信息，分析PCurve的实际应用。

Key words. OpenCascade, ACIS, PCurve, Curve on Surface, Parametric Surface  阅读全文

posted @ 2014-03-15 12:07 eryar 阅读(4201) | 评论 (0) | 编辑 收藏

Parametric Curves and Surfaces

     摘要: Abstract. This paper is concerned with parametric curves and surfaces definitions, such as singular point and regular point and their application in OpenCascade. The two most common methods of representing curves and surfaces in geometric modeling are implicit equations and parametric functions. Successful geometric modeling is done using both techniques. When you use parametric functions to represent curves and surfaces, you need to pay attention for the characteristic of it, such as singularit  阅读全文

posted @ 2014-03-10 18:43 eryar 阅读(3408) | 评论 (0) | 编辑 收藏

Surface Normal Averaging

     摘要: 　　摘要Abstract：正确设置网格面上点的法向，对几何体在光照等情况下显示得更真实，这样就可以减少顶点数量，提高渲染速度。本文通过将OpenCascade中的形状离散成网格数据后在OpenSceneGraph中显示，及使用OSG的快速法向osgUtil::SmoothingVisitor优化与使用OpenCascade来计算正确的法向的结果的对比，说明面法向量的重要性。
　　
关键字Key Words：OpenCascade, OpenSceneGraph, Normal Averaging, Triangulation Mesh  阅读全文

posted @ 2014-02-27 21:47 eryar 阅读(4354) | 评论 (0) | 编辑 收藏

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