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OPEN CASCADE Curve Continuity

摘要: Abstract. 設計一條復雜曲線時，出于設計和制造上的考慮，常常通過多段曲線組合而成，這就需要解決曲線段之間如何實現光滑連接的問題。評價曲線間連接的光滑度的度量有兩種：參數連接性和幾何連續性。本文對這兩種連續性分別進行介紹。

Key Words. Curve Continuity, Geometric Continuity, 參數連續性、幾何連續性閱讀全文

posted @ 2015-11-15 23:01 eryar 閱讀(2611) | 評論 (4) | 編輯收藏

OPEN CASCADE BSpline Curve Interpolation

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(3783) | 評論 (2) | 編輯收藏

RvmTranslator - 3D OBJ

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

posted @ 2015-11-07 18:00 eryar 閱讀(3363) | 評論 (0) | 編輯收藏

BOOST Voronoi Visualizer

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(2203) | 評論 (2) | 編輯收藏

PDMS call Operating System Command

摘要: PDMS提供了在PML中調用系統命令的命令：syscom。借助這個PML命令，為PDMS的開發又提供了一種新架構（New Architecture）。本文詳細介紹syscom命令的用法，及如何使用這條命令來為PDMS的二次開發指出一條新路。閱讀全文

posted @ 2015-10-27 22:44 eryar 閱讀(3357) | 評論 (0) | 編輯收藏

Clash Detection

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
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posted @ 2015-10-21 21:01 eryar 閱讀(2072) | 評論 (0) | 編輯收藏

IsoAlgo2.0 Preview

posted @ 2015-10-15 21:02 eryar 閱讀(1443) | 評論 (2) | 編輯收藏

OpenCASCADE Interpolation - Lagrange

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(2828) | 評論 (0) | 編輯收藏

RvmTranslator 2.1 is released

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(2586) | 評論 (4) | 編輯收藏

Export AutoCAD Entities for PDMS Aids

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

posted @ 2015-08-15 19:33 eryar 閱讀(3332) | 評論 (14) | 編輯收藏

IsoAlgo3d - A PCF 3D Viewer

摘要: IsoAlgo3d - A PCF 3D Viewer. 閱讀全文

posted @ 2015-08-06 22:46 eryar 閱讀(2670) | 評論 (2) | 編輯收藏

AVEVA PML.Net for DWG

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(4391) | 評論 (0) | 編輯收藏

OpenGL Shader in OpenCASCADE

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(4135) | 評論 (3) | 編輯收藏

A Simple OpenGL Shader Example II

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(2210) | 評論 (1) | 編輯收藏

Make Helix Curve in OpenCASCADE

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(5600) | 評論 (15) | 編輯收藏

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