STYLE
TABLES Section
VIEW
The following group codes apply to UCS symbol
table entries. In addition to the group codes described here, see Common Group Codes for Symbol Table Entries.
For information about abbreviations and formatting used in this table,
see Formatting Conventions in This
Reference.
|
UCS group
codes
|
|
Group code
|
Description
|
|
100
|
Subclass
marker (AcDbUCSTableRecord)
|
|
2
|
UCS name
|
|
70
|
Standard
flag values (bit-coded values):
16 = If
set, table entry is externally dependent on an xref
32 = If
both this bit and bit 16 are set, the externally dependent xref
has been successfully resolved
64 = If
set, the table entry was referenced by at least one entity in the
drawing the last time the drawing was edited. (This flag is for
the benefit of AutoCAD commands. It can be ignored by most programs
that read DXF files and need not be set by programs that write DXF
files)
|
|
10
|
Origin
(in WCS)
DXF: X value; APP: 3D point
|
|
20, 30
|
DXF: Y and Z values
of origin (in WCS)
|
|
11
|
X-axis
direction (in WCS)
DXF: X value;
APP: 3D vector
|
|
21, 31
|
DXF: Y and Z values
of X-axis direction (in WCS)
|
|
12
|
Y-axis
direction (in WCS)
DXF: X value;
APP: 3D vector
|
|
22, 32
|
DXF: Y and Z values
of Y-axis direction (in WCS)
|
|
79
|
Always
0
|
|
146
|
Elevation
|
|
346
|
ID/handle
of base UCS if this is an orthographic. This code is not present
if the 79 code is 0. If this code is not present and 79 code is
non-zero, then base UCS is assumed to be WORLD
|
|
71
|
Orthographic
type (optional; always appears in pairs with the 13, 23, 33 codes):
1 = Top;
2 = Bottom
3 = Front; 4 = Back
5 = Left;
6 = Right
|
|
13
|
Origin
for this orthographic type relative to this UCS
DXF: X value
of origin point; APP: 3D point
|
|
23, 33
|
DXF: Y and Z values
of origin point
|
Each 71/13,23,33 pair defines the UCS origin
for a particular orthographic type relative to this UCS. For example,
if the following pair is present, then invoking the UCS/LEFT command
when UCSBASE is set to this UCS will cause the new UCS origin to
become (1,2,3).
71: 5
13: 1.0
23: 2.0
33: 3.0
If this pair were not present, then invoking
the UCS/LEFT command would cause the new UCS origin to be set to
this UCS's origin point.