AutoCAD DXF - Revision history

DonaldNaegely at 03:10, 13 May 2009

2009-05-13T03:10:10Z

DonaldNaegely at 01:03, 13 May 2009

2009-05-13T01:03:53Z

DonaldNaegely at 00:53, 13 May 2009

2009-05-13T00:53:04Z

DonaldNaegely at 00:52, 13 May 2009

2009-05-13T00:52:03Z

DonaldNaegely at 23:11, 12 May 2009

2009-05-12T23:11:58Z

DonaldNaegely at 23:04, 12 May 2009

2009-05-12T23:04:53Z

DonaldNaegely at 22:49, 12 May 2009

2009-05-12T22:49:07Z

DonaldNaegely at 22:35, 12 May 2009

2009-05-12T22:35:37Z

Show changes

DonaldNaegely: Some of the earlier sections are complete

2009-05-12T15:52:02Z

Some of the earlier sections are complete

Show changes

M Piecyk at 17:50, 22 December 2008

2008-12-22T17:50:07Z

← Older revision		Revision as of 03:10, 13 May 2009
Line 151:		Line 151:

	* '''Technical protection considerations:''' None		* '''Technical protection considerations:''' None
−
−	~~'''Typical use:''' CAD, specifically alternate, interoperable format of AutoCAD DWG files.~~

	'''File classification:'''		'''File classification:'''

@@ Line 230: / Line 230: @@
 * [http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=12272454&linkID=10809853 List of all released DXF specifications]
 * [http://en.wikipedia.org/wiki/AutoCAD_DXF#Software_which_supports_DXF Wikipedia page giving general information on DXF]
-* [http://images.autodesk.com/adsk/files/acad_dxf.pdf A timeline of AutoCAD releases]
+* [http://betaprograms.autodesk.com/history/autocad_release_history.htm A timeline of AutoCAD releases]

@@ Line 134: / Line 134: @@
 '''Magic numbers:''' The number 0 will appear at the beginning of the file and at the beginning of every new element. It is used as a delimiter in the file. There are also a number of other magic numbers that may appear in the header section, these are outlined in p13-34  in [http://images.autodesk.com/adsk/files/acad_dxf.pdf]
-'''Format(s):''' ASCII and binary type supported
+'''Format(s):''' application/dxf
 '''Rights:''' Proprietary license distributed by AutoDesk

@@ Line 6: / Line 6: @@
 '''Date released:''' January 2008
-'''Date:''' 1982-12-??
+'''Date:''' December 1982
 '''Creator(s):''' [[Creator::AutoDesk]] - Created as part of AutoCAD 1.0

@@ Line 68: / Line 68: @@
 '''Identifier:''' [http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=12272454&linkID=10809853]
-'''Documentation:''' [http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=12272454&linkID=10809853]
+'''Documentation:''' [http://images.autodesk.com/adsk/files/acad_dxf.pdf]
 '''File Extensions:''' .dxf
@@ Line 225: / Line 225: @@
 ** '''Description:''' N/A
-'''References:''' [[References::]] - A list of references regarding any aspects of this engineering format; any reading material supplemental to this page.
+'''References:'''

@@ Line 176: / Line 176: @@
 **** '''Description:''' An example of this is shown in the 3DFACE section shown in the example file above.
 ** '''Mesh:'''
-*** '''Manifold surface meshes:''' - Can the format support manifold surface meshes? Example: A format that supports surfaces that are mathematical spaces in which every point has a neighborhood which resembles Euclidean space
+*** '''Manifold surface meshes:'''
-**** '''Is Supported:''' [[File Classification Mainfold Surface Meshes - Is Supported::]] - Is the feature supported in the engineering format?
+**** '''Is Supported:''' No
-**** '''Description:''' [[File Classification Manifold Surface Meshes - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Description:''' The only mesh type structure supported is the idea of a polyface mesh which is described in more detail in the specification document.
-*** '''Manifold volume meshes:''' - Can the format support manifold volume meshes? Example: A format that supports volumes that are mathematical spaces in which every point has a neighborhood which resembles Euclidean space
+*** '''Manifold volume meshes:'''
-**** '''Is Supported:''' [[File Classification Manifold Volume Meshes - Is Supported::]] - Is the feature supported in the engineering format?
+**** '''Is Supported:''' No
-**** '''Description:''' [[File Classification Manifold Volume Meshes - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Description:''' The only mesh type structure supported is the idea of a polyface mesh which is described in more detail in the specification document.
-*** '''Non-manifold meshes:''' - Can the format support non-manifold meshes? Example: A format that supports meshes that are not manifolds
+*** '''Non-manifold meshes:'''
-**** '''Is Supported:''' [[File Classification Non-manifold Meshes - Is Supported::]] - Is the feature supported in the engineering format?
+**** '''Is Supported:''' No
-**** '''Description:''' [[File Classification Non-manifold Meshes - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Description:''' The only mesh type structure supported is the idea of a polyface mesh which is described in more detail in the specification document.
-** '''Parametric representation:''' - Section describes whether or not the engineering format supports parametric representations.
+** '''Parametric representation:'''
-*** '''Parametric surfaces:''' - Can the format support parametric surfaces? Example: A format that can contain surfaces that are generated with parametric equations supports parametric surfaces.
+*** '''Parametric surfaces:'''
-**** '''Is Supported:''' [[File Classification Parametric Surfaces - Is Supported::]] - Is the feature supported in the engineering format?
+**** '''Is Supported:''' No
-**** '''Description:''' [[File Classification Parametric Surfaces - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Description:''' N/A
-*** '''Parametric curves:''' - Can the format support parametric curves? Example: A format that can contain curves that are generated with parametric equations supports parametric curves.
+*** '''Parametric curves:'''
-**** '''Is Supported:''' [[File Classification Parametric Curves - Is Supported::]] - Is the feature supported in the engineering format?
+**** '''Is Supported:''' No
-**** '''Description:''' [[File Classification Parametric Curves - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Description:''' N/A
-** '''Contour sets:''' - Can the format support contour sets?
+** '''Contour sets:'''
-*** '''Is Supported:''' [[File Classification Contour Sets - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Contour Sets - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-** '''NURBS:''' - Can the format support Non Uniform Rational Basis Splines? Examples: The engineering formats IGES, STEP, ACIS, and PHIGS
+** '''NURBS:'''
-*** '''Is Supported:''' [[File Classification NURBS - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification NURBS - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' Splines are supported but NURBS are not specifically supported in DXF as these type of spline is not in the specification document.
-* '''Multi-resolution models:''' - Can the format support models with multiple resolutions? Examples: A format that supports a highly detailed and lowly detailed model simultaneously supports multi-resolution models.
+* '''Multi-resolution models:'''
-** '''Is Supported:''' [[File Classification Multi-resolution Models - Is Supported::]] - Is the feature supported in the engineering format?
+** '''Is Supported:''' Yes
-** '''Description:''' [[File Classification Multi-resolution Models - Description::]] - This field is used to describe the support or lack of support of the feature.
+** '''Description:''' Supports different levels. Each level represents a different slice of the overall drawing. See the level discussion in the specification file and in the example file comments.
-* '''Dynamics:''' - Section describes whether or not the engineering format supports dynamics.
+* '''Dynamics:'''
-** '''Kinematics:''' - Can the format support kinematics? Example: Does the format allow model parts to rotate?
+** '''Kinematics:'''
-*** '''Is Supported:''' [[File Classification Kinematics - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Kinematics - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-** '''Assembly:''' - Can the format support assembly? Example: Does the format allow the assembly instructions to be explicitly specified with a model?
+** '''Assembly:'''
-*** '''Is Supported:''' [[File Classification Assembly - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Assembly - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-** '''Force(s):''' - Can the format support forces? Example: Does the format support acceleration forces?
+** '''Force(s):'''
-*** '''Is Supported:''' [[File Classification Force - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Force - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-* '''Boundary representation''' - Can the format support models with boundary representations?
+* '''Boundary representation'''
-** '''Manifold surface boundary representations:''' - Can the format support manifold surface boundary representations? Example: The engineering format STEP
+** '''Manifold surface boundary representations:'''
-*** '''Is Supported:''' [[File Classification Manifold Surface Boundary Representation - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Manifold Surface Boundary Representation - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-** '''Manifold volume boundary representations:''' - Can the format support manifold volume boundary representations? Example: The engineering format STEP
+** '''Manifold volume boundary representations:'''
-*** '''Is Supported:''' [[File Classification Manifold Volume Boundary Representation - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Manifold Volume Boundary Representation - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-** '''Non-manifold boundary representations:''' - Can the format support non-manifold boundary representations? Example: The engineering format STEP
+** '''Non-manifold boundary representations:'''
-*** '''Is Supported:''' [[File Classification Non-manifold Boundary Representation - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Non-manifold Boundary Representation - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-* '''Material transparency:''' - Can the format support transparency? Example: Does the format allow models to have a clear window in a car?
+* '''Material transparency:'''
-** '''Is Supported:''' [[File Classification Material Transparency - Is Supported::]] - Is the feature supported in the engineering format?
+** '''Is Supported:''' No
-** '''Description:''' [[File Classification Material Transparency - Description::]] - This field is used to describe the support or lack of support of the feature.
+** '''Description:''' N/A
 '''References:''' [[References::]] - A list of references regarding any aspects of this engineering format; any reading material supplemental to this page.

@@ Line 150: / Line 150: @@
 * '''External dependencies:''' None
-* '''Technical protection considerations:''' [[Technical protection considerations::]] - Any considerations that are necessary when it comes to technical protection.
+* '''Technical protection considerations:''' None
-'''Typical use:''' [[Typical use::]] - Keywords that describe the format's typical use. Examples: CAD and CAM
+'''Typical use:''' CAD, specifically alternate, interoperable format of AutoCAD DWG files.
-'''File classification:''' - Specific properties that pertain to this engineering format.
+'''File classification:'''
-* '''Type {Binary, Text}:''' [[File Classification Type::]] - The type of file, choices are binary and text.
+* '''Type {Binary, Text}:''' Binary and ASCII
-* '''Raster data:''' - Section describes whether or not the engineering format supports raster data.
+* '''Raster data:'''
-** '''Raster data 2D:''' - Can the format support 2D raster data? Example: A format that can contain 2D pixelated data supports 2D raster data.
+** '''Raster data 2D:'''
-*** '''Is Supported:''' [[File Classification Raster Data 2D - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Raster Data 2D - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-** '''Raster data 3D:''' - Can the format support 3D raster data? Example: A format that can contain 2D pixelated data of a 3D model supports 3D raster data.
+** '''Raster data 3D:'''
-*** '''Is Supported:''' [[File Classification Raster Data 3D - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Is Supported:''' No
-*** '''Description:''' [[File Classification Raster Data 3D - Description::]] - This field is used to describe the support or lack of support of the feature.
+*** '''Description:''' N/A
-* '''Geometric representation:''' - Section describes whether or not the engineering format supports geometric representations.
-** '''Implicit representation:''' - Section describes whether or not the engineering format supports implicit representations.
+* '''Geometric representation:'''
-*** '''Implicit surfaces:''' - Can the format support implicit surfaces? Example: A format that can contain surfaces that are generated with mathematical equations that contain the independent variables x, y, and z, like x^2 + y^2 + z^2 * R^2 = 0, supports implicit surfaces.
+** '''Implicit representation:'''
-**** '''Is Supported:''' [[File Classification Implicit Surfaces - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Implicit surfaces:'''
-**** '''Description:''' [[File Classification Implicit Surfaces - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Is Supported:''' No
-*** '''Implicit curves:''' - Can the format support implicit curves? Example: A format that can contain curves that are generated with mathematical equations that contain the independent variables x, y, and z, supports implicit curves.
+**** '''Description:''' N/A
-**** '''Is Supported:''' [[File Classification Implict Curves - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Implicit curves:'''
-**** '''Description:''' [[File Classification Implicit Curves - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Is Supported:''' No
-*** '''Point set:''' - Can the format support point sets? Example: A format that supports surfaces and lines that are generated by points that form triangles supports point sets.
+**** '''Description:''' N/A
-**** '''Is Supported:''' [[File Classification Point Set - Is Supported::]] - Is the feature supported in the engineering format?
+*** '''Point set:'''
-**** '''Description:''' [[File Classification Point Set - Description::]] - This field is used to describe the support or lack of support of the feature.
+**** '''Is Supported:''' Yes
-** '''Mesh:''' - Section describes whether or not the engineering format supports mesh.
+**** '''Description:''' An example of this is shown in the 3DFACE section shown in the example file above.
 *** '''Manifold surface meshes:''' - Can the format support manifold surface meshes? Example: A format that supports surfaces that are mathematical spaces in which every point has a neighborhood which resembles Euclidean space
 **** '''Is Supported:''' [[File Classification Mainfold Surface Meshes - Is Supported::]] - Is the feature supported in the engineering format?

@@ Line 17: / Line 17: @@
 '''Applications:'''
-* '''Native application(s):''' [[Native Application::DXF Format - AutoCAD]]
+* '''Native application(s):''' [[Native Application::AutoCAD DXF Format - AutoCAD]]
 * '''Interoperable applications:''' [[Interoperable Application::AutoCAD DXF Format - QCad]], [[Interoperable Application::AutoCAD DXF Format - Pro/ENGINEER]]