2011

example, if the Radius constraint had not been applied, the radius of the circle
would have been modified instead of the tangent point of the line.
The CONSTRAINTSOLVEMODE system variable determines the way an object
behaves when constraints are applied or when grips are used to edit it.
BEST PRACTICE You can limit unexpected changes by applying additional
geometric or dimensional constraints. Common choices include coincident and
fix constraints.
Modify Constrained Objects with Editing Commands
You can use editing commands such as MOVE, COPY, ROTATE, SCALE, and
STRETCH to modify constrained geometry. The results maintain the constraints
applied to the objects.
NOTE The TRIM, EXTEND, BREAK, and JOIN commands in some circumstances
can remove constraints.
For information about temporarily relaxing constraints, see
Overview of
Constraints
on page 619.
To grip-edit constrained geometry
1 Select the constrained object.
2 Click the grips and drag it to edit the geometry.
To turn a constraint off
1 Click the constrained object to select it.
2 Move your mouse over a grip.
The grips are displayed in red to show that the object is selected.
3 Click the grip.
634 | Chapter 18 Add Constraints to Geometry