Creating Constraints

You can set geometric constraints either on a single element or between several elements. Such a constraint forces a limitation. For instance, a geometric constraint might require that two lines be parallel.

This task shows you how to:

Before you begin: Create a 3D shape containing one or more geometric elements (curves, surfaces, etc.).

Set a constraint on a Single Element

You can set geometric constraints on a single element.

  1. Select the element to be constrained.

  2. Click Constraint in the Constraints toolbar.

    The corresponding constraint symbol appears on the geometry.

Set a Constraint Between Elements

You can set geometric constraints between several elements.

  1. Multi-select two or three elements to be constrained.

  2. Click Constraint Defined in Dialog Box .

    The Constraint Definition dialog box appears indicating the types of constraint you can set between the selected elements.

  3. Select one of the available options to specify that the corresponding constraint is to be made.

  4. Click OK.

    The corresponding constraint symbol appears on the geometry.