VTK – The Visualization Toolkit (VTK) is an open-source, freely available software system for 3D computer graphics, image processing and visualization. OCCT code includes header file glext.h obtained from Khronos web site. OpenGL specification is developed by the Khronos group. OpenGL is an industry standard API for 3D graphics used by OCCT for implementation of 3D viewer. TBB version 2017 is available under Apache 2.0 license, while older versions until 4.4 are available under GPLv2 license with the runtime exception ( ). It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanisms for scalability and performance. Threading Building Blocks is not just a threads-replacement library.
It is a library that helps you to take advantage of multi-core processor performance without having to be a threading expert. Intel(R) Threading Building Blocks (TBB) offers a rich and complete approach to expressing parallelism in a C++ program. FreeType 2 is released under two open-source licenses: BSD-like FreeType License and the GPL ( ). This product can be used in graphic libraries, display servers, font conversion tools, text image generation tools, and many other products. It is a software font engine that is designed to be small, efficient, highly customizable and portable while capable of producing high-quality output (glyph images). The library is licensed under GL2PS license ( ).įreeType 2 is developed by Antoine Leca, David Turner, Werner Lemberg and others. It is optionally used by OCCT to export content of OpenGL scene to vector graphics formats (PS, PDF, EMF, SVG). GL2PS is developed by Christophe Geuzaine and others. To use Tcl/Tk, please refer to the Licensing Terms ( ). However, Tcl/Tk is an open source, and the copyright allows you to use, modify, and redistribute Tcl/Tk for any purpose, without an explicit license agreement and without paying any license fees or royalties. Tcl/Tk is under copyright by Scriptics Corp., Sun Microsystems, and other companies. Taken together Tcl and Tk provide a solution to develop cross-platform graphical user interfaces with a native look and feel. Tk is a graphical user interface (GUI) toolkit, with buttons, menus, listboxes, scrollbars, and so on. Tcl is a high-level programming language. If you need further information on Qt, please, refer to Qt Homepage ( ) In OCCT Qt is used for programming samples. Qt is free and open source software distributed under the terms of the GNU Lesser General Public License. Qt is a cross-platform application framework that is widely used for developing application software with graphical user interface (GUI). We strongly recommend that you carefully read the license of these products and, in case you need any further information, directly contact their authors. You are hereby informed that all rights to the software listed below belong to its respective authors and such software may not be freely available and/or be free of charge for any kind of use or purpose. The following parties are acknowledged for producing tools which are used within Open CASCADE Technology libraries or for release preparation. Mac and the Mac logo are trademarks of Apple Inc., registered in the U.S. Windows is a registered trademark of Microsoft Corporation in the United States and other countries. Linux is a registered trademark of Linus Torvalds. Should you need further information, please directly contact the authors.ĬAS.CADE and Open CASCADE are registered trademarks of OPEN CASCADE S.A.S. You are hereby informed that all software is a property of its respective authors and is protected by international and domestic laws on intellectual property and trademarks. See the license text for formal disclaimer. The entire risk related to any use of the OCCT code and materials is on you. Note that Open CASCADE Technology is provided on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND. Open CASCADE Technology is free software you can redistribute it and / or modify it under the terms of the GNU Lesser General Public License (LGPL) version 2.1, with additional exception.Īlternatively, Open CASCADE Technology may be used under the terms of Open CASCADE commercial license or contractual agreement. All datafiles are ASCII so they can be modified by users. works on most personal computers (It's Java-based so: Windows, Mac OS X, Linux, Unix are supported).
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