Graphics Programs Reference
In-Depth Information
Notice on the command
line that the Create
Alignment From Objects
command accepts lines,
arcs, and polylines.
2.
On the Home tab of the ribbon, click Alignment
➢
Create Alignment
From Objects.
3.
When the command line prompts you to select an object, click the
longest magenta polyline, labeled Jordan Court.
◀
◀
4.
Press Enter.
5.
If the arrow is pointing toward the south, press Enter. If it's pointing
north, press R and then press Enter.
A black arrow should
appear on the poly-
line, indicating the
program's guess at
the direction of the
alignment.
6.
In the Create Alignment From Objects dialog box, do the following:
▶
For Name, enter
Jordan Court
.
▶
For Type, verify that Centerline is selected.
◀
▶
For Site, verify that <None> is selected.
Believe it or not, the
choice here is very
important. The direc-
tion of the alignment
will affect the configu-
ration and labeling of
many more components
of this design as it
progresses.
▶
For Alignment Style, verify that Proposed is selected.
▶
For Alignment Label Set, verify that _No Labels is selected.
▶
Uncheck the box next to Add Curves Between Tangents.
▶
Verify that the box next to Erase Existing Entities is checked.
▶
Click OK.
7.
Click the newly created alignment, and then click one of the magenta
polylines.
Notice how the polyline grips are different from the alignment
grips (see Figure 5.2).
8.
Experiment with moving the grips, and compare the behavior of a
Civil 3D alignment with the behavior of a polyline.
9.
Repeat steps 2 through 6 to create the Madison Lane and Logan
Court alignments.
10.
Save and close the drawing.
You can view the results of successfully completing this exercise by opening
Alignment from Objects - Complete.dwg
.
