图核科技

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 阅读全文

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 阅读全文

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 阅读全文

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 阅读全文

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 阅读全文

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, 阅读全文

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 阅读全文

摘要： Abstract. OpenGL Shading Language, the high-level programming language defined to allow application writers to write programs that execute on the programmable processors defined within OpenGL. Informally the language is sometimes referred to as GLSL. The GLSL has been made part of the OpenGL standard as of OpenGL2.0. The paper focus on a simple example of OpenGL Shader, which can be used as a guide of GLSL. Key Words. OpenGL, OpenGL Shading Language, GLSL, Shader, Qt 阅读全文

摘要： It can compile and run correctly, the compile error in occQt do not appear in the test program. you can also debug the code in Qt Creator. So use Qt Creator to program on Linux is very convenient. 阅读全文

摘要： Abstract. OpenCASCADE provides a class BRepBuilderAPI_MakeFace to build topological faces. A face maybe built from a surface, elementary surface from gp package, surface from Geom, from a wire and find the surface automatically if possible, etc. If a face is built, how to check it for visualization? What does PCurve means? The paper will answer those question. Key Words. OpenCASCADE, Topological Face, PCurve, Holes 阅读全文