IGES Connection

IGES Connection
Convert your IGES files to Computer Graphics Metafiles (CGMs) and import them into any publishing system or generate hardcopy output outside of your CAD system.

An IGES to CGM File Conversion Filter

IGES-Connection is a software filter to convert information in an Initial Graphics Exchange Standard (IGES) file to a Computer Graphics Metafile (CGM). IGES is a popular data representation specification in the Mechanical CAD area for exchange of 3D information. CGM is an equally popular picture description specification for 2D graphics in the CAD and desktop publishing areas.

Why Convert?

There are many reasons for converting IGES files to CGMs. IGES is intended for representation of 3D information, so an IGES file may contain complex entities like curves and surfaces and allow hierarchical relationships among groups of entities called structures. Parsing and import of information from IGES files is complex and sometimes resource-intensive. The CGM format, on the other hand, is a simpler specification consisting of only 2D elements.

While IGES has become a popular exchange format in the mechanical CAD sector, CGM has propagated itself across the board into diverse sectors including mechanical and electrical CAD, geophysical exploration, GIS, desktop publishing and presentation graphics. Very few software packages outside the mechanical CAD area are capable of accepting IGES files. However, CGMs are supported by many popular software packages such as Microsoft Word, Harvard Graphics, Interleaf, and FrameMaker, to name a few.

Versions, File Types, and Encodings

IGES-Connection works with version 5.1 IGES files in standard ASCII format. Output CGM files can be generated in one of three encodings: binary, character or clear text. Binary CGMs are compliant with the CALS profile.

No-Loss Translation

IGES-Connection was designed to ensure that there will be no loss of information in the translation. All possible IGES entities are mapped directly to CGM elements. Entities that have no direct CGM element counterparts are either exploded, decomposed, or converted into simpler geometrical forms. Verbose messages containing information about entity counts, warning and error messages are made available during translation. Messages can also be output to a disk file, with user control over the maximum number of error messages to be output.

Translation Flexibility and User Control

Many translation controls are available to customize the resulting CGM output. These controls can be used to fine tune the translation for optimal visual integrity, file size, and CGM element usage. Many CGM interpreters are minimal implementations, so by using the available controls, you can ensure that a CGM you generate will be capable of import into the target system.

Viewing and Printing IGES Files

CGM files from IGES Connection may be directly piped to CGM-Spooler, available from ATC, for viewing, printing, and plotting IGES files. Alternatively, IGES-Connection may be used as a front-end filter to a variety of view and markup products, including ForView and ForReview, also from ATC. Off-the-shelf Client/Server configurations are available whereby the user may translate and view IGES files residing on UNIX servers from MS Windows based PCs.

Rely on Robust IGES Translation Technology

IGES translation is a difficult task complicated by the numerous flavors of IGES files output by the leading graphics applications. The technology and the underlying IGES interpretation engine used in IGES-Connection is the same as the one used by premier CAD vendors for whom IGES translation accuracy is a must. IGES-Connection assures you that your IGES translation will be just as accurate and correct.

Complete CGM Solutions

In addition to IGES, CGM is another important standard included as part of the CALS specification. ATC offers a complete family of CGM products. Generate CGMs from your applications using GRAFPAK-CGM, a CGM generator library. Use Metacheck to verify conformance of your CGMs to the standard, and to the CALS profile. Incorporate MDL/I into your application and read in element-level information from CGMs. Use CGM-Spooler to view the CGMs and generate hardcopy on a variety of graphics printers and plotters. By using CGM solutions from ATC, you will be in the company of leading CAD vendors who obtain CGM technology from ATC.

For more information on IGES Connection or any of our other products, contact an ATC account representative today.

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