2.0

Table Of Contents
Chapter 1 Using the Grading Commands
58
Functionality of Grading Objects in AutoCAD (continued)
Save/Save As Open With Result of Operation
R15/R14/R13 ADE/Map - Open/Query Fully functional display/draw and modify (locked)
including save back to source
WBLOCK
Only R14
R15 (all platforms) Same as all Save As R15 functions
R15/14/R13 R15 INSERT (all platforms) Insert as block and explode, object is intact. Insert
as exploded .DWG (using *), object is intact;
Behavior is same as all Save As R15/14/R13
functions
R12 R12/R13/R14/R15 Save as R12 converts daylight line to 3D polyline;
Projection lines and footprint are converted to 3D
lines
XREF R15 (with or without AutoCAD Land
Development Desktop
support/object enabler)
Display works same as all Save As functions;
Binding the XREF and exploding results in intact
grading object
R13 Display works same as all Save As functions;
Binding the XREF and exploding results in intact
grading object
R12 Save as R12 converts daylight line to 3D polyline;
Projection lines and footprint are converted to 3D
lines
DWF MSIE 4.0/5.0 and WHIP Object shows normally
Creating a Surface from a Grading Object
You can create a surface from a grading object. The surface is created using the
3D information from the grading object footprint, daylight line, and projection
lines.
The surface information is determined from the following features:
n
Footprint: Information from the footprint is gathered from the vertices on
the footprint and along arc segments of the footprint. Along arc segments, a
point is created on the arc at the location of each projection line.
n
Daylight lines: Information from the daylight lines is gathered from
points at each vertex of the daylight line. The daylight line also becomes
the TIN boundary.
n
Projection Lines: Information from the projection lines is gathered from a
point at the beginning and a point at the end of each projection line.
NOTE
When the surface is created, the footprint and projection lines are treated
as breaklines. The daylight line is used as a TIN boundary, to prevent
extraneous TIN lines from being drawn outside of the daylight line.