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            eryar

            PipeCAD - Plant Piping Design Software.
            RvmTranslator - Translate AVEVA RVM to OBJ, glTF, etc.
            posts - 603, comments - 590, trackbacks - 0, articles - 0

                 摘要: Abstract. There are many drawing files during the ship design or other design process, so somebody want to merge them to one DWG file. The DwgMerger is a AutoCADE plugin developed by AutoCAD .NET, its purpose is to merge all the drawing files, include dwg and dxf format to one drawing paper.

            Key Words. AutoCAD, DWG, DXF, Merger, 合并   閱讀全文

            posted @ 2015-01-15 19:32 eryar 閱讀(3549) | 評論 (3)編輯 收藏

                 摘要: Abstract. Qt’s Undo Framework is an implementation of the Command Pattern, for implementing undo/redo functionality in applications. The Command pattern is based on the idea that all editing in an application is done by creating instances of command objects. Command objects apply changes to the document and are stored on a command stack. Furthermore, each command knows how to undo its changes to bring the document back to its previous state. As long as the application only uses command objects t  閱讀全文

            posted @ 2015-01-13 18:59 eryar 閱讀(6740) | 評論 (0)編輯 收藏

                 摘要: Abstract. To provide the precision required in industrial design, drawings need to offer the possibility of removing lines, which are hidden in a given projection. OpenCASCADE provides two algorithms for this Hidden Line Removal component. The paper mainly translate the document of OpenCASCADE Modeling Algorithms, and give some applications in the plant design CAD software.

            Key Words. OpenCASCADE, HLR, Hidden Line Removal  閱讀全文

            posted @ 2015-01-05 18:39 eryar 閱讀(4894) | 評論 (0)編輯 收藏

                 摘要: Abstract. OpenCASCADE have provided the Qt samples in the samples directory, but they are a little complicated. So I decide write a simple OpenCASCADE Qt demo for the OpenCASCADE beginners.

            Key Words. OpenCASCADE6.8.0, Qt5.4  閱讀全文

            posted @ 2014-12-29 23:52 eryar 閱讀(8202) | 評論 (0)編輯 收藏

                 摘要: Abstract. Siemens’ JT data format accepted as the world’s first ISO international standard for viewing and sharing lightweight 3D product information. OpenCASCADE JT Assistant is a viewer for files in JT format.

            Key Words. Simens JT, JtOpen, OpenCASCADE, Jt Assistant  閱讀全文

            posted @ 2014-12-28 12:49 eryar 閱讀(3468) | 評論 (0)編輯 收藏

                 摘要: Abstract. AVEVA PMLNet allows you to instantitate and invoke methods on .NET objects from PML proxy objects. The PML proxy objects behave just like any other PML object. The paper gives a hello world example to demenstrate the PMLNet usage.

            Key Words. AVEVA, PMLNet, PML, AVEVA .Net, C#, Managed C++  閱讀全文

            posted @ 2014-12-25 22:33 eryar 閱讀(4734) | 評論 (2)編輯 收藏

                 摘要: Abstract. When you finish modeling objects in the scene, you must want to use some operations to view the scene objects, such as Pan, Zoom and Rotate the scene. Pan and Zoom is easy to understand, rotate the 3D scene according to 2D point in the viewport is a little complicated. There are many methods to rotate the 3D scene, but the Arcball Controller is intuitive for the user and any viewport can be described. You can rotate your model at will just by using the mouse.

            Key Words. OpenCA  閱讀全文

            posted @ 2014-12-20 19:52 eryar 閱讀(4458) | 評論 (2)編輯 收藏

                 摘要: OpenCASCADE使用Doxygen及一些第三方程序來自動生成文檔,簡化程序開發過程中的文檔工作。尤其是Tcl/Tk腳本的使用,讓重復機械的勞動由電腦來自動完成,提高工作效率及編程的樂趣。

            如果想使用搜索功能,可以自己運行gendoc.bat并指定搜索模式為local即可解決問題。   閱讀全文

            posted @ 2014-12-16 19:37 eryar 閱讀(1782) | 評論 (0)編輯 收藏

                 摘要: Abstract. The purpose of the OpenGL graphics processing pipeline is to convert 3D descriptions of objects into a 2D image that can be displayed. In many ways, this process is similar to using a camera to convert a real-world scene into a 2D print. To accomplish the transformation from 3D to 2D, OpenGL defines several coordinate spaces and transformations between those spaces. Each coordinate space has some properties that make it useful for some part of the rendering process. The transformations  閱讀全文

            posted @ 2014-12-07 17:01 eryar 閱讀(4454) | 評論 (1)編輯 收藏

                 摘要: Abstract. OpenCASCADE introduce a new class Graphic3d_Camera for the Visualization module. The camera class provides object-oriented approach to setting up projection and orientation properties of 3D view. The paper use GLUT to test the function of the new Camera class.

            Key Words. OpenCASCADE, Camera, OpenGL, GLUT, Transformations  閱讀全文

            posted @ 2014-12-03 21:30 eryar 閱讀(4007) | 評論 (0)編輯 收藏

                 摘要: Abstract. The quaternions are members of a noncommutative division algebra first invented by William Rowan Hamilton. The idea for quaternions occurred to him while he was walking along the Royal Cannal on his way to a meeting of the Irish Academy, and Hamilton was so pleased with his discovery that he scratched the fundamental formula of quaternion algebra. There are several different ways we can express orientation and angular displacement in 3D. Here we discuss the three most important methods  閱讀全文

            posted @ 2014-11-29 19:18 eryar 閱讀(4050) | 評論 (0)編輯 收藏

                 摘要: OpenGL Shader Test - Shadertoy  閱讀全文

            posted @ 2014-11-29 15:14 eryar 閱讀(2443) | 評論 (0)編輯 收藏

                 摘要: Abstract. OpenCASCADE linear extrusion surface is a generalized cylinder. Such a surface is obtained by sweeping a curve (called the “extruded curve” or “basis”) in a given direction (referred to as the direction of extrusion and defined by a unit vector). The u parameter is along the extruded curve. The v parameter is along the direction of extrusion. The form of a surface of linear extrusion is generally a ruled surface. It can be a cylindrical surface, or a planar surface.

            Key Words.  閱讀全文

            posted @ 2014-11-23 16:46 eryar 閱讀(3380) | 評論 (0)編輯 收藏

                 摘要: 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 code, you will learn these.

            Key Words. OpenCASCADE, Sphere, BRep  閱讀全文

            posted @ 2014-11-22 17:52 eryar 閱讀(2591) | 評論 (0)編輯 收藏

                 摘要: 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 to solid, while in BRepPrimAPI_MakeBox from solid, shell to vertex. From the construction, the BRep data structure in OpenCASCADE also can be called the Winged-Edge data structure.

            Key Words. OpenCASCADE, BRep, Box, The Winged-Edge Structure  閱讀全文

            posted @ 2014-11-16 22:22 eryar 閱讀(4761) | 評論 (0)編輯 收藏

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