Name | Initial Graphics Exchange Specification | AutoCAD Drawing |
File extension | .igs, .iges | .dwg |
Original software | AutoCAD | |
Binary | ||
ASCII | ■ | |
Polygonal | ■ | |
NURBS | ■ | ■ |
Solids | ■ | |
Smoothing groups | ■ | ■ |
Textures, materials | ■ | |
Developer/Owner | U.S. National Bureau of Standards | Autodesk |
Description | ||
Specification | Download PDF | |
Format features | Universal open interchange NURBS-surfaces format. Along with STEP - one of the most popular | Despite the « two-dimensional » AutoCAD specialization, it is possible to create solid models. Autodesk itself for three-dimensional modeling software promotes Inventor |
Viewing software | Delcam Exchange 2012 (free), eDrawings (free) | DWG TrueView (free), DWGSee (free) |