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VIEWPORT<br />
index is negative, the edge that begins with that vertex is invisible. The first<br />
0 vertex marks the end of the vertices of the face.<br />
The following group codes apply to viewport entities. In addition to the<br />
group codes described here, see “Common Group Codes for Entities” on page<br />
60. For information about abbreviations and formatting used in this table,<br />
see “Formatting Conventions in This Reference” on page 6.<br />
Viewport group codes<br />
Group codes<br />
Description<br />
100 Subclass marker (AcDbViewport)<br />
10 Center point (in WCS)<br />
DXF: X value; APP: 3D point<br />
20, 30 DXF: Y and Z values of center point (in WCS)<br />
40 Width in paper space units<br />
41 Height in paper space units<br />
68 Viewport status field:<br />
–1 = On, but is fully off screen, or is one of the viewports that is not<br />
active because the $MAXACTVP count is currently being exceeded.<br />
0 = Off<br />
= On and active. The value indicates the order of<br />
stacking for the viewports, where 1 is the active viewport, 2 is the next,<br />
and so forth<br />
69 Viewport ID<br />
12 View center point (in DCS)<br />
DXF: X value; APP: 2D point<br />
22 DXF: View center point Y value (in DCS)<br />
VIEWPORT | 109
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