Applying Constraints to Objects

An object group is a collection of design objects. Use the following commands for object groups:

• create_group creates an object group.
• report_group outputs information about one or more object groups.

The general procedure for applying constraints to objects (nets, routes, terms, and area boundaries) is as follows:

1. (Optional) Define custom constraints.
2. (Optional) If you want to apply the constraints to a group of objects, create the object group.
3. (Optional) If you are applying the constraints to a new constraint group, create the constraint group.
4. Assign the constraint group. .
   
   You must specify the constraint group type (implicit, default, foundry, taper, inputtaper, outputtaper, shield, transreflexive, reflexive, or interchild).
5. For each constraint, do the following:
   1. (Optional) Set the constraint parameters.
   2. Set the constraint. (set_constraint, set_layer_constraint, set_layerpair_constraint, set_layerarray_constraint).

Related Topics

create_group

report_group

define_constraint

create_constraint_group

set_constraint_parameter