Glossary
========

.. glossary::

    ACI
        :ref:`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
        :term:`SAT` or :term:`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 :ref:`bulge value` is used to create arc shaped line segments in
        :class:`~ezdxf.entities.Polyline` and :class:`~ezdxf.entities.LWPolyline`
        entities.

    CAD
        Computer-Assisted Drafting or Computer-Aided Design

    CTB
        Color dependent plot style table (:class:`~ezdxf.acadctb.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 :term:`CAD` applications. `DXF`_ is a
        trademark of `Autodesk`_ ®. See also :ref:`what is dxf`

    proxy-graphic
        The proxy-graphic is an internal data format to add a graphical
        representation to DXF entities which are unknown (custom DXF entities),
        not documented or very complex so CAD applications can display them
        without knowledge about the internal structure of these entities.

    raw-color
        Raw color value as stored in DWG files, this integer value can
        represent :term:`ACI` values as well as and :term:`true-color` values

    reliable CAD application
        CAD applications which create valid DXF documents in the meaning and
        interpretation of `Autodesk`_. See also :ref:`what is dxf`

    SAB
        ACIS file format (Standard ACIS Binary), binary stored data

    SAT
        ACIS file format (Standard ACIS Text), data stored as ASCII text

    STB
        Named plot style table (:class:`~ezdxf.acadctb.NamedPlotStyles`)

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


.. (R) = Atl+0174

.. _Autodesk: https://www.autodesk.com/

.. _AutoCAD: https://www.autodesk.com/products/autocad/overview

.. _DXF: https://help.autodesk.com/view/OARX/2018/ENU/?guid=GUID-235B22E0-A567-4CF6-92D3-38A2306D73F3

.. _Spatial Corp.: http://www.spatial.com/products/3d-acis-modeling

.. _ACIS: https://en.wikipedia.org/wiki/ACIS

.. _ODA: https://www.opendesign.com/

.. _downloads: https://www.opendesign.com/guestfiles