Open Design Alliance
|Developer(s)||Open Design Alliance|
4.3.1 / August 28, 2017
|License||Proprietary (sources available to members)|
The Open Design Alliance is a nonprofit organization of over 1,250 members in 50 countries which develops Teigha, a software development platform used to create engineering applications including CAD. The main idea is to make core graphics technology accessible to software developers allowing them to focus on application development.
The ODA is developing Teigha for two main file formats:
- Teigha for .dwg files is a development platform available using C++, .NET, and ActiveX that is used with .dwg, and .dxf files and other graphics files (old names: OpenDWG and DWGdirect).
- Teigha for .dgn files is a development platform available using C++ that is used with .dgn files and other graphics files (old name: DGNdirect).
- Teigha Architecture is a development platform available using C++ that is used in conjunction with Teigha for .dwg files to additionally support custom architecture objects.
- Teigha Civil is a Teigha extension for civil engineering available using C++ that is used in conjunction with Teigha for .dwg files to additionally support custom engineering objects stored in .dwg files.
- Teigha PRC is a 3D PDF component for Teigha that can be used to export a .dwg or .dgn file to PRC-based 3D PDF (Portable Document Format).
- Teigha Cloud is a framework for developing CAD applications that run in the cloud and can be accessed on any device via a browser or thin client.
- The Alliance was formed in February 1998 as the OpenDWG Alliance, with its initial release of code based on the AUTODIRECT libraries written by Matt Richards of MarComp.
- In 2002, the OpenDWG library was renamed to DWGdirect.
- And the same year, the alliance was renamed to Open Design Alliance.
- On 22 November 2006, Autodesk sued the Open Design Alliance alleging that its DWGdirect libraries infringed Autodesk's trademark for the word "Autodesk", by writing the TrustedDWG code (including the word "AutoCAD") into DWG files it created. In April 2007, the suit was dropped, with Autodesk modifying the warning message in AutoCAD 2008 (to make it more benign), and the Open Design Alliance removing support for the TrustedDWG code from its DWGdirect libraries.
- In 2008, support was added for .dgn files with DGNdirect.
- In April 2010, DWGdirect was renamed to Teigha for .dwg files, OpenDWG was renamed to Teigha Classic and DGNdirect was renamed to Teigha for .dgn files.
- Since August 2017 (v. 4.3.1), Teigha contains production support for version 2018 .dwg files, including architectural, civil and mechanical custom objects.
Members of the Alliance (not exhaustive)
- Adobe Systems
- Advanced Computer Solutions
- Bentley Systems
- Civiltech SA
- CADian Software
- GreatStar Software
- Jacobs Engineering
- IntelliCAD Technology Consortium
- IMSI DESIGN
- Knowledge Base
- Oracle Corporation
- Tekla Corporation
- Tianji Media Group
- ZWCAD Software Co.,LTD
- 20-20 Technologies
- 4M SA
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