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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. 設(shè)計(jì)一條復(fù)雜曲線時(shí),出于設(shè)計(jì)和制造上的考慮,常常通過(guò)多段曲線組合而成,這就需要解決曲線段之間如何實(shí)現(xiàn)光滑連接的問(wèn)題。評(píng)價(jià)曲線間連接的光滑度的度量有兩種:參數(shù)連接性和幾何連續(xù)性。本文對(duì)這兩種連續(xù)性分別進(jìn)行介紹。

            Key Words. Curve Continuity, Geometric Continuity, 參數(shù)連續(xù)性、幾何連續(xù)性  閱讀全文

            posted @ 2015-11-15 23:01 eryar 閱讀(2622) | 評(píng)論 (4)編輯 收藏

                 摘要: Abstract. Global curve interpolation to point data is a way to construct curves. The paper focus on the interpolate algorithm in OPEN CASCADE, and give a simple example to demonstrate the usage of the GeomAPI_Interpolate class.

            Key Words. Interpolate, NURBS, BSpline, OPEN CASCADE  閱讀全文

            posted @ 2015-11-11 22:23 eryar 閱讀(3813) | 評(píng)論 (2)編輯 收藏

                 摘要: RvmTranslator2.2 - Support export 3D OBJ files.  閱讀全文

            posted @ 2015-11-07 18:00 eryar 閱讀(3378) | 評(píng)論 (0)編輯 收藏

                 摘要: Abstract. The Voronoi extension of the Boost.Polygon library provides functionality to construct a Voronoi diagram of a set of points and linear segments in 2D space with some limitations. The paper mainly describles how to compile the boos voronoi visualizer and use it show the example voronoi diagram result.
            Key Words. Boost, Voronoi, Visualizer  閱讀全文

            posted @ 2015-10-31 12:12 eryar 閱讀(2214) | 評(píng)論 (2)編輯 收藏

                 摘要: PDMS提供了在PML中調(diào)用系統(tǒng)命令的命令:syscom。借助這個(gè)PML命令,為PDMS的開(kāi)發(fā)又提供了一種新架構(gòu)(New Architecture)。本文詳細(xì)介紹syscom命令的用法,及如何使用這條命令來(lái)為PDMS的二次開(kāi)發(fā)指出一條新路。  閱讀全文

            posted @ 2015-10-27 22:44 eryar 閱讀(3375) | 評(píng)論 (0)編輯 收藏

                 摘要: Abstract. Clash detection is used for the model collision check. The paper introduce the clash detection in PDMS, and also about how to set the piping component for the operation space clash check.

            Key Word. Clash Detection, Collision Detection
              閱讀全文

            posted @ 2015-10-21 21:01 eryar 閱讀(2079) | 評(píng)論 (0)編輯 收藏

            posted @ 2015-10-15 21:02 eryar 閱讀(1448) | 評(píng)論 (2)編輯 收藏

                 摘要: Abstract. Power basis polynomial is the most simple polynomial function. It also be called power series. OpenCASCADE provides basic computation functions for polynomial functions, such as evaluate the result for a given polynomial, Lagrange interpolation, Hermite interpolation, .etc. The package named PLib, means Polynomial functions Library. The paper focus on the Lagrange interpolation usage of PLib.

            Key Words. OpenCASCADE, PLib, Interpolation, Lagrange, 插值  閱讀全文

            posted @ 2015-09-05 12:16 eryar 閱讀(2836) | 評(píng)論 (0)編輯 收藏

                 摘要: RvmTranslator2.1 [20150818]
            ----------------
            1. Improve performance for STEP translation;
            2. Finish parse all the primitive shapes in RVM file;  閱讀全文

            posted @ 2015-08-18 22:10 eryar 閱讀(2596) | 評(píng)論 (4)編輯 收藏

                 摘要: cad2pdms - Export AutoCAD Entities for PDMS Aids.  閱讀全文

            posted @ 2015-08-15 19:33 eryar 閱讀(3344) | 評(píng)論 (14)編輯 收藏

                 摘要: IsoAlgo3d - A PCF 3D Viewer.  閱讀全文

            posted @ 2015-08-06 22:46 eryar 閱讀(2678) | 評(píng)論 (2)編輯 收藏

                 摘要: Abstract. AVEVA PmlNet allows you to instantiate and invoke methods on .NET objects from PML proxy objects. The PML proxy objects behave just like any other PML object. By PML proxy object you can use many other C# resources easily. The paper show an example to use PML proxy object to read and write AutoCAD DXF/DWG files by the OpenDWG library in AVEVA PDMS.

            Key Words. AVEVA, PDMS, Marine, Plant, OpenDWG, AutoCAD, DWG, DXF  閱讀全文

            posted @ 2015-08-01 09:39 eryar 閱讀(4400) | 評(píng)論 (0)編輯 收藏

                 摘要: Abstract. As implementation of one of the strategic steps in OpenCASCADE visualization component development road-map, support for GLSL shader programs has been added in OpenCASCADE Technology 6.7.0.

            Key Words. OpenCASCADE, GLSL, Shader, Gooch Shader  閱讀全文

            posted @ 2015-07-22 23:12 eryar 閱讀(4153) | 評(píng)論 (3)編輯 收藏

                 摘要: Abstract. The OpenGL Shading Language syntax comes from the C family of programming languages. Tokes, identifiers, semicolons, nesting with curly braces, control-flow, and many key words look like C. GLSL provides three qualifiers which form the interfaces of the shaders to their outside world.

            Key Words. OpenGL, GLSL, Qualifiers,   閱讀全文

            posted @ 2015-07-21 22:56 eryar 閱讀(2218) | 評(píng)論 (1)編輯 收藏

                 摘要: 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 curve easily. The paper first make a helix by Tcl in Draw Test Harness, then translate the Tcl script to OpenCASCADE C++ code.

            Key Words. OpenCASCADE, Helix Curve, PCurve, Sweep, Spring  閱讀全文

            posted @ 2015-07-09 21:52 eryar 閱讀(5641) | 評(píng)論 (15)編輯 收藏

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