Glossary

ACI

AutoCAD Color Index (ACI)

ACIS

The 3D ACIS Modeler (ACIS) is a geometric modeling kernel developed by Spatial Corp. ® (formerly Spatial Technology) and now part of Dassault Systems. All ACIS based DXF entities store their geometry as SAT or SAB data. These are not open data formats and a license has to be purchased to get access to their SDK, therefore ezdxf can not provide any support for creating, processing or transforming of ACIS based DXF entities.

bulge

The Bulge value is used to create arc shaped line segments in Polyline and LWPolyline entities.

CAD

Computer-Assisted Drafting or Computer-Aided Design

CTB

Color dependent plot style table (ColorDependentPlotStyles)

DWG

Proprietary file format of AutoCAD ®. Documentation for this format is available from the Open Design Alliance (ODA) at their Downloads section. This documentation is created by reverse engineering therefore not perfect nor complete.

DXF

Drawing eXchange Format is a file format used by AutoCAD ® to interchange data with other CAD applications. DXF is a trademark of Autodesk ®. See also What is DXF?

raw color

Raw color value as stored in DWG files, this integer value can represent ACI values as well as and true color values

reliable CAD application

CAD applications which create valid DXF documents in the meaning and interpretation of Autodesk. See also What is DXF?

SAB

ACIS file format, data stored as binary data

SAT

ACIS file format, data stored as ASCII text

STB

Named plot style table (NamedPlotStyles)

true color

RGB color representation, a combination red, green and blue values to define a color.