2013

Table Of Contents
Add Constraints to Geometry
With parametric drawing, you can add constraints to geometry to ensure that
the design conforms to specified requirements.
Overview of Constraints
Parametric drawing is a technology that is used for designing with constraints.
Constraints are associations and restrictions applied to 2D geometry.
There are two general types of constraints:
Geometric constraints control the relationships of objects with respect to
each other
Dimensional constraints control the distance, length, angle, and radius
values of objects
The following illustration displays geometric and dimensional constraints
using the default format and visibility.
A blue cursor icon always displays when you move the cursor over an object
that has constraints applied to it.
In the design phase of a project, constraints provide a way to enforce
requirements when experimenting with different designs or when making
changes. Changes made to objects can adjust other objects automatically, and
restrict changes to distance and angle values.
282 | Chapter 6 Create and Modify Objects