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SPATIAL_INDEX group codes (continued)<br />
Group codes<br />
Description<br />
40 Timestamp (Julian date)<br />
100 Subclass marker (AcDbSpatialIndex)<br />
The SPATIAL_INDEX is always written out empty to a DXF file. This object<br />
can be ignored.<br />
SPATIAL_FILTER<br />
The following group codes are used by SPATIAL_FILTER objects. In addition<br />
to the group codes described here, see “Common Group Codes for Objects”<br />
on page 116. For information about abbreviations and formatting used in<br />
this table, see “Formatting Conventions in This Reference” on page 6.<br />
SPATIAL_FILTER group codes<br />
Group codes<br />
Description<br />
0 Object name (SPATIAL_FILTER)<br />
5 Handle<br />
102 Start of persistent reactors group; always “{ACAD_REACTORS”<br />
330 Soft-pointer ID/handle to owner dictionary (SPATIAL)<br />
102 End of persistent reactors group, always “}”<br />
100 Subclass marker (AcDbFilter)<br />
100 Subclass marker (AcDbSpatialFilter)<br />
70 Number of points on the clip boundary<br />
2 = Rectangular clip boundary (lower-left and upper-right)<br />
greater than 2 = Polyline clip boundary<br />
10 Clip boundary definition point (in OCS) (always 2 or more) based on an<br />
xref scale of 1<br />
DXF: X value; APP: 2D point<br />
20 DXF: Y value of boundary definition point (always 2 or more)<br />
SPATIAL_FILTER | 137
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