simple dxf file
Alex Kachanov
Can you give one example of "minimum" dxf file?
Just one rectangle saved from CorelDraw gives 4 kb of text.
And I need only simple features: points, lines, polylines and polygons.
Can you write here example of file containing one shape of each type?
Thanks!
roy
created in autocad would also have layer and linetype defaults, which
would be saved in ( I'm going to call it ) a header of it's own.
Surely there would be other headers for other types of info.
I think a polygon would be a polyline, but not sure of that either.
Do you want to be able to write dxf to import to autocad?
I am having trouble conceiving any reason to NOT use autocad to create
the types of entities you mention in the first place.
Dr Fleau
layer 0, purged. Good reading.
Start of incredibly long, yet desperataly simple text file:
-->
0
SECTION
2
HEADER
9
$ACADVER
1
AC1018
9
$ACADMAINTVER
70
76
9
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3
ANSI_1252
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0.0
20
0.0
30
0.0
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-0.0003661829982491
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-0.0002746372486868
30
-0.0015258207003583
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$EXTMAX
10
5.000244160415888
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5.000564591494114
30
0.0000000349246037
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10
0.0
20
0.0
9
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10
17.0
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11.0
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0
9
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70
1
9
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70
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9
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0
9
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0
9
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9
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70
1
9
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0.2
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$TRACEWID
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0.05
9
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7
STANDARD
9
$CLAYER
8
0
9
$CELTYPE
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ByLayer
9
$CECOLOR
62
256
9
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1.0
9
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0
9
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1.0
9
$DIMASZ
40
0.125
9
$DIMEXO
40
0.05
9
$DIMDLI
40
0.5
9
$DIMRND
40
0.0
9
$DIMDLE
40
0.0
9
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0.125
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0.1
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0.1
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0.09
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0.0
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0.0
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0
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0
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0
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0
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1
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1
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mm
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0
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0
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0
9
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0
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1 - 1
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4
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4
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2
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0.71
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0
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70
0
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70
0
9
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70
1
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7
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0
9
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0
9
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0
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4
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4
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2
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Soudo
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0
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0
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0.0
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70
2
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46
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3
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70
1
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5
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$DIMLWD
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-1
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$DIMLWE
70
-1
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0
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2
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4
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0.1
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0.5
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70
0
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0
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$MENU
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.
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40
0.0
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0.0
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0.0
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70
0
9
$CHAMFERA
40
0.125
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$CHAMFERB
40
0.125
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0.0
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0.0
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$SKPOLY
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0
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$TDCREATE
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2453902.670215648
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2453902.836882315
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2453902.670525984
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2453902.837192651
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$TDINDWG
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0.0003108796
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0.0003106944
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$USRTIMER
70
1
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0.0
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$ANGDIR
70
0
9
$PDMODE
70
0
9
$PDSIZE
40
0.0
9
$PLINEWID
40
0.0
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$SPLFRAME
70
0
9
$SPLINETYPE
70
6
9
$SPLINESEGS
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8
9
$HANDSEED
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142
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$SURFTAB1
70
6
9
$SURFTAB2
70
6
9
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6
9
$SURFU
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6
9
$SURFV
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6
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$UCSNAME
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30
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1.0
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30
0.0
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$UCSYDIR
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0.0
20
1.0
30
0.0
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$UCSORTHOREF
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$UCSORTHOVIEW
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0
9
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10
0.0
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30
0.0
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$UCSORGRIGHT
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0.0
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0.0
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$UCSORGBACK
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0.0
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$PUCSBASE
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$PUCSNAME
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0.0
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30
0.0
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$PUCSXDIR
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1.0
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0.0
30
0.0
9
$PUCSYDIR
10
0.0
20
1.0
30
0.0
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$PUCSORTHOREF
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9
$PUCSORTHOVIEW
70
0
9
$PUCSORGTOP
10
0.0
20
0.0
30
0.0
9
$PUCSORGBOTTOM
10
0.0
20
0.0
30
0.0
9
$PUCSORGLEFT
10
0.0
20
0.0
30
0.0
9
$PUCSORGRIGHT
10
0.0
20
0.0
30
0.0
9
$PUCSORGFRONT
10
0.0
20
0.0
30
0.0
9
$PUCSORGBACK
10
0.0
20
0.0
30
0.0
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$USERI1
70
0
9
$USERI2
70
0
9
$USERI3
70
0
9
$USERI4
70
0
9
$USERI5
70
0
9
$USERR1
40
0.0
9
$USERR2
40
0.0
9
$USERR3
40
0.0
9
$USERR4
40
0.0
9
$USERR5
40
0.0
9
$WORLDVIEW
70
1
9
$SHADEDGE
70
3
9
$SHADEDIF
70
70
9
$TILEMODE
70
1
9
$MAXACTVP
70
64
9
$PINSBASE
10
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30
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70
0
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$PEXTMIN
10
1.000000000000000E+20
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1.000000000000000E+20
30
1.000000000000000E+20
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$PEXTMAX
10
-1.000000000000000E+20
20
-1.000000000000000E+20
30
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$PLIMMIN
10
0.0
20
0.0
9
$PLIMMAX
10
12.0
20
9.0
9
$UNITMODE
70
0
9
$VISRETAIN
70
1
9
$PLINEGEN
70
0
9
$PSLTSCALE
70
1
9
$TREEDEPTH
70
3020
9
$CMLSTYLE
2
Standard
9
$CMLJUST
70
0
9
$CMLSCALE
40
1.0
9
$PROXYGRAPHICS
70
1
9
$MEASUREMENT
70
0
9
$CELWEIGHT
370
-1
9
$ENDCAPS
280
0
9
$JOINSTYLE
280
0
9
$LWDISPLAY
290
0
9
$INSUNITS
70
1
9
$HYPERLINKBASE
1
9
$STYLESHEET
1
9
$XEDIT
290
1
9
$CEPSNTYPE
380
0
9
$PSTYLEMODE
290
1
9
$FINGERPRINTGUID
2
{FAABADC0-58F0-4297-85A2-00439C73BBF3}
9
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{A79AA221-F86C-4CBA-82FF-FFB56CFF3044}
9
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290
1
9
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40
0.0
9
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290
0
9
$SORTENTS
280
127
9
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280
0
9
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280
1
9
$XCLIPFRAME
290
0
9
$HALOGAP
280
0
9
$OBSCOLOR
70
257
9
$OBSLTYPE
280
0
9
$INTERSECTIONDISPLAY
280
0
9
$INTERSECTIONCOLOR
70
257
9
$DIMASSOC
280
2
9
$PROJECTNAME
1
0
ENDSEC
0
SECTION
2
CLASSES
0
CLASS
1
ACDBDICTIONARYWDFLT
2
AcDbDictionaryWithDefault
3
ObjectDBX Classes
90
0
91
1
280
0
281
0
0
CLASS
1
TABLESTYLE
2
AcDbTableStyle
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ObjectDBX Classes
90
2047
91
1
280
0
281
0
0
CLASS
1
AMGSETTINGSOBJ
2
AmgSettingsObj
3
"AcadM|Product Description: AutoCAD Mechanical 2000|Company: Autodesk"
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91
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280
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0
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CLASS
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AMGOBJPROPCFG
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AmgObjPropCfg
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"AmgLay|Product Description: AutoCAD Mechanical 2000|Company: Autodesk"
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CLASS
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ACMESCOPE
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AcMeScope
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AcMeServices
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ACGREFMASTER
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AcGrefMaster
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AcAttribServices
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ACME_DOCUMENT
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AcMeDbDoc
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AcMeServices
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ACMEDRAWINGMAN
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AcMeDrawingMan
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AcMeServices
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GSMANAGER
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ACMESTATEMGR
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CLASS
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AM_DRAWING_MGR
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AcDmDwgMgr
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AcMechDwgViewMgmt
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AM_DWG_DOCUMENT
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AcDmDwgDocument
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AcMechDwgViewMgmt
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AM_DWG_SHEET
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AcDmSheet
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AcMechDwgViewMgmt
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0
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280
0
281
0
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CLASS
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AM_VIEWDIMPARMAP
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AcDmViewDimParMap
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AcMechDwgViewMgmt
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280
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CLASS
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ACIMREALSYSVAR
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AcImRealSysVar
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AcMeServices
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CLASS
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AM_DWGMGR_NAME
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AcDmDwgMgrName
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AcMechDwgViewMgmt
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CLASS
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ACME_DATABASE
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AcMeDbDatabase
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CLASS
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ACRFINSADJUSTERMGR
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AcGrefacadMaster
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AMIMASTER
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AmiMaster
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AmiServices
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MAPIAMMOUDLE
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MApiAmModule
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MApiAmServices
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CLASS
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ACMSTANDARDANSI
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AcmStandardANSI
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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ACMSURFSTANDARDANSI
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AcmSurfTextStdANSI
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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ACMFCFSTANDARDANSI
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AcmFCFStdANSI
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ACMWELDSTANDARDANSI
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AcmWeldingStdANSI
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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AcmIdStdANSI
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AcmDatumStdANSI
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ACMBOMSTANDARDANSI
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AcmBOMStdANSI
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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280
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ACMDETAILSTANDARDANSI
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AmdtDetailSymStdANSI
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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ACMSECTIONSTANDARDANSI
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AmdtSectionSymStdANSI
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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ACMCENTERLINESTANDARDANSI
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AmdtCenterLineStdANSI
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ACMTHREADLINESTANDARDANSI
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AmdtThreadLineStdANSI
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ACAMGLAYSTD
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AcAmgLayStd
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CLASS
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ACAMGDIMSTD
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AcAmgDimStd
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"AcAmgDimStd|Product Description: AutoCAD Mechanical 2000|Company: Autodesk"
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ACAMGTITLESTD
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AcAmgTitleStd
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ACMNOTESTANDARDANSI
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AmdtNoteStdANSI
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ACAMGHOLECHARTSTDANSI
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ACMSTANDARDISO
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AcmStandardISO
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AMDTEDGESTANDARDISO13715
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ACMSURFSTANDARDISO
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AcmSurfTextStdISO
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ACMFCFSTANDARDISO
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AcmFCFStdISO
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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280
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ACMWELDSTANDARDISO
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AcmWeldingStdISO
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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90
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280
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ACMIDSTANDARDISO
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AcmIdStdISO
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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90
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280
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ACMDATUMSTANDARDISO
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AcmDatumStdISO
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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ACMBOMSTANDARDISO
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AcmBOMStdISO
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ACMDETAILSTANDARDISO
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AmdtDetailSymStdISO
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"Amdt_StdImp|Product Description: AutoCAD Mechanical 2004 DX|Company:
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ACMSECTIONSTANDARDISO
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350
1E
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13F
102
{ACAD_REACTORS
330
C
102
}
330
C
100
AcDbDictionary
281
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CTABLESTYLE
350
140
0
DICTIONARY
5
B1
102
{ACAD_REACTORS
330
C
102
}
330
C
100
AcDbDictionary
281
1
3
AcmStdDictionary
350
B2
0
DICTIONARY
5
2F
102
{ACAD_REACTORS
330
C
102
}
330
C
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AcDbDictionary
281
1
0
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12D
102
{ACAD_REACTORS
330
C
102
}
330
C
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AcDbDictionary
281
1
0
LAYOUT
5
22
102
{ACAD_REACTORS
330
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}
330
1A
100
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1
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{ACAD_REACTORS
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}
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330
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}
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170
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63
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275
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EOF
<--
End of said file.
Epilogue: and they plined happily ever after.
Sorta gives an idea of the trouble Autodesk goes through to ensure
"compatibility" with its own products.
Dr Fleau
"roy" <mel...@socket.net> a écrit dans le message de
news:12902vk...@corp.supernews.com...
roy
> For example, here is the text file generated from a 5"X5" square, lines on
> layer 0, purged. Good reading.
>
> Start of incredibly long, yet desperataly simple text file:
> -->
> 0
> SECTION
> 2
> HEADER
> 9
> $ACADVER
> 1
> AC1018
> 9
..............................................
WE HEAR YOU, BUT:
when I want to create a polyline in lisp I code in something like:
(entmake (list (cons 0 "LWPOLYLINE")
(cons 100 "AcDbEntity")
(cons 8 lyr)
(cons 100 "AcDbPolyline")
(cons 90 4)
(cons 70 oc)
;;;CLOSED POLYLINE
(cons 43 0)
(cons 38 0)
(cons 39 0)
(cons 10 a)
(cons 40 0)
(cons 41 0)
(cons 42 0)
(cons 10 b)
(cons 40 0)
(cons 41 0)
(cons 42 0)
(cons 10 c)
(cons 40 0)
(cons 41 0)
(cons 42 0)
(cons 10 d)
(cons 40 0)
(cons 41 0)
(cons 42 0)
)
)
where a, b, c and d are points, variables.
there are things dear old autcad will assume if you don't specify.
is this the bare essentials. I hate extra work.
:)
I THINK (if you simply must create data outside of dear old autocad) IT
WOULD BE EASIER BY FAR TO CREATE AN ASCII FILE AND READ IT IN IN LISP.
but then again, I still assume I don't quite get the reason for the
effort, so my solution may be totally ignorant.
Szoszon357
Here is a simplest dxf file with point, line and polyline. It will
work, but it's VERY plain drawing (without any layers, colors, linetype
scales, etc.). It's writen in DXF 12 file format, which is much simpler
then DXF 13 and later.
0
SECTION
2
ENTITIES
0
POINT
8
0
10
15.0
20
60.0
30
0.0
0
LINE
8
0
10
22.807666863788629
20
44.558355977114253
30
0.0
11
84.996858028638727
21
74.176390323253443
31
0.0
0
POLYLINE
8
0
66
1
10
0.0
20
0.0
30
0.0
0
VERTEX
8
0
10
30.94457034468331
20
117.4419503604917
30
0.0
0
VERTEX
8
0
10
6.5338586179422977
20
88.404661582461031
30
0.0
0
VERTEX
8
0
10
39.662681675662242
20
78.82235625113556
30
0.0
0
VERTEX
8
0
10
87.902895995003036
20
100.3099498777275
30
0.0
0
VERTEX
8
0
10
73.953917865436736
20
127.3146284758714
30
0.0
0
VERTEX
8
0
10
39.662681675662242
20
103.5040518853383
30
0.0
0
SEQEND
8
0
0
POLYLINE
8
0
66
1
10
0.0
20
0.0
30
0.0
70
1
0
VERTEX
8
0
10
8.8586887342223442
20
120.9264251521567
30
0.0
0
VERTEX
8
0
10
-3.4919684496407299
20
142.31839090147309
30
0.0
0
VERTEX
8
0
10
-28.193282817366882
20
142.31839090147321
30
0.0
0
VERTEX
8
0
10
-40.543940001229963
20
120.9264251521567
30
0.0
0
VERTEX
8
0
10
-28.193282817366899
20
99.534459402840412
30
0.0
0
VERTEX
8
0
10
-3.4919684496407499
20
99.534459402840383
30
0.0
0
SEQEND
8
0
0
ENDSEC
0
EOF
teserecter
https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/manually-writing-a-minimal-dxf/td-p/2081140
and was able to make a headerless, tableless file.dxf\
which succesfully draws two lines
MinTwoLines.dxf
```
SECTION
2
ENTITIES
0
8
DXF_Lines_LayerName
0.0
20
0.0
30
0.0
1.0
21
0.0
31
0.0
0
8
DXF_Lines_LayerName
1.0
20
0.0
30
0.0
1.0
21
0.0
31
0
ENDSEC
0
EOF
```
a Minimal .dxf with a spline seems to require header and table sections: see\
https://stackoverflow.com/questions/61034242/sample-for-a-minimal-dxf-containing-a-spline
--
For full context, visit https://www.polytechforum.com/autocad/simple-dxf-file-11209-.htm