Graphics Programs Reference
In-Depth Information
T
H E
C
O N C E N T R I C
C
O N S T R A I N T
You've seen how the Auto Constrain tool applies a set of constraints to a set of objects. You
have also seen some manually applied constraints. In the next exercise, you'll add a circle to the
drawing and then add a few more:
1.
Choose Edit
Undo from the menu bar, or press F-Z several times to change the drawing
back to before the Horizontal constraint was added. Or, you can close the current draw-
ing without saving and open Parametric01a.dwg (which is available on the companion
website).
2.
From the Tool Sets palette, click and hold the Linear Dimension tool. The flyout will open.
Select the Radius tool, or select Draw
Circle
Center, Radius from the menu bar. You can
also type
C
↵.
3.
Click a location roughly above and to the left of the drawing, as shown in Figure 16.8. You
don't need to be exact because you will use a geometric constraint to move the circle into
an exact location.
4.
Type
0.25
↵ for the radius of the circle.
FIGURE 16.8
Place the circle
roughly in the loca-
tion shown here.
Place the circle here
and give it a 0.25 radius.
5.
Click and hold on the Coincident tool on the Tool Sets palette. A drop-down will open.
Select the Concentric tool. You can also choose Parametric
Geometric Constraints
Concentric from the menu bar or type
GEOMCONSTRAINT
↵
CON
↵. (You can also
type
GCCONCENTRIC
↵.)
6.
Click the arc at the left side of the drawing, and then click the circle you just added. The
circle moves to a location that is concentric to the arc, as shown in Figure 16.9.
FIGURE 16.9
The circle is con-
centric to the arc
on the left side.
