DXF file with negatively indexed vertex

negatively-indexed-vertex.dxf

  0
SECTION
  2
HEADER
  9
$ACADVER
  1
AC1009
  9
$INSBASE
 10
0.0
 20
0.0
 30
0.0
  9
$EXTMIN
 10
0.0
 20
0.0
 30
0.0
  9
$EXTMAX
 10
0.0
 20
0.0
 30
0.0
  0
ENDSEC
  0
SECTION
  2
TABLES
  0
TABLE
  2
VPORT
 70
1
  0
VPORT
  2
*ACTIVE
 70
0
 10
0.0
 20
0.0
 11
1.0
 21
1.0
 12
-5.0
 22
1.0
 13
0.0
 23
0.0
 14
0.1
 24
0.1
 15
0.1
 25
0.1
 16
0.0
 26
0.0
 36
1.0
 17
0.0
 27
0.0
 37
0.0
 40
10.0
 41
1.0
 42
50.0
 43
0.0
 44
0.0
 50
0.0
 51
0.0
 71
0
 72
100
 73
1
 74
1
 75
0
 76
0
 77
0
 78
0
  0
ENDTAB
  0
TABLE
  2
LTYPE
 70
8
  0
LTYPE
  2
CONTINUOUS
 70
0
  3
Solid line
 72
65
 73
0
 40
0.0
  0
LTYPE
  2
DOT
 70
0
  3
. . . . . . .
 72
65
 73
2
 40
0.25
 49
0.0
 49
-0.25
  0
LTYPE
  2
DASHED
 70
0
  3
__ __ __ __ __
 72
65
 73
2
 40
0.8
 49
0.5
 49
-0.3
  0
LTYPE
  2
DASHDOT
 70
0
  3
__ . __ . __ .
 72
65
 73
4
 40
1.0
 49
0.5
 49
-0.25
 49
0.0
 49
-0.25
  0
LTYPE
  2
DIVIDE
 70
0
  3
____ . . ____ . . 
 72
65
 73
6
 40
1.25
 49
0.5
 49
-0.25
 49
0.0
 49
-0.25
 49
0.0
 49
-0.25
  0
LTYPE
  2
BORDER
 70
0
  3
__ __ . __ __ . 
 72
65
 73
6
 40
1.75
 49
0.5
 49
-0.25
 49
0.5
 49
-0.25
 49
0.0
 49
-0.25
  0
LTYPE
  2
HIDDEN
 70
0
  3
__ __ __ __ __
 72
65
 73
2
 40
0.4
 49
0.25
 49
-0.25
  0
LTYPE
  2
CENTER
 70
0
  3
____ _ ____ _ __
 72
65
 73
4
 40
2.0
 49
1.25
 49
-0.25
 49
0.25
 49
-0.25
  0
ENDTAB
  0
TABLE
  2
LAYER
 70
1
  0
LAYER
  2
PYDXF
 70
64
 62
7
  6
continuous
  0
ENDTAB
  0
TABLE
  2
STYLE
 70
1
  0
STYLE
  2
STANDARD
 70
0
 40
0
 41
1.0
 50
0.0
 71
0
 42
1
 3
ARIAL.TTF
 4

  0
ENDTAB
  0
TABLE
  2
VIEW
 70
1
  0
VIEW
  2
BF_TOPVIEW
 70
0
 40
120.0
 10
0.0
 20
0.0
 41
200.0
 11
0.0
 21
0.0
 31
1.0
 12
0.0
 22
0.0
 32
0.0
 42
50.0
 43
0.0
 44
0.0
 50
0.0
 71
0
  0
ENDTAB
  0
ENDSEC
  0
SECTION
  2
BLOCKS
  0
ENDSEC
  0
SECTION
  2
ENTITIES
  0
POLYLINE
  8
0
 70
64
 66
1
 10
0.0
 20
0.0
 30
0.0
 71
4
 72
2
  0
VERTEX
  8
0
 10
1.0
 20
1.0
 30
1.0
 70
192
  0
VERTEX
  8
0
 10
1.0
 20
1.0
 30
-1.0
 70
192
  0
VERTEX
  8
0
 10
1.0
 20
-1.0
 30
1.0
 70
192
  0
VERTEX
  8
0
 10
1.0
 20
-1.0
 30
-1.0
 70
192
  0
VERTEX
  8
0
 10
0.0
 20
0.0
 30
0.0
 70
128
 71
2
 72
1
 73
-3
  0
VERTEX
  8
0
 10
0.0
 20
0.0
 30
0.0
 70
128
 71
-2
 72
3
 73
4
  0
SEQEND
  8
0
  0
ENDSEC
  0
EOF