Assigning Constraints
Constraints can be assigned manually or automatically to elements in the zone. The constraint assignment tools include:
• Commands:
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Command
|
Function
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|---|---|
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Assign
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Manually assign constraints to geometric elements.
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Free
|
Remove constraints from geometric elements.
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Show
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Show existing constraints by displaying their icons.
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Clear
|
Remove selected constraint icons (but not the constraints themselves) from the display.
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Ban
|
Remove selected constraints and prevent them from being re-assigned by Complete.
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Complete
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Automatically generates a reasonable set of constraints to all remaining elements in the zone.
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• Options:
Options limit the actions of Show, Clear, Free and Ban. Available options are:
|
Option
|
Limiting Action
|
|---|---|
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New
|
Act only on constraints added by the most recent Complete command. New must be used immediately after Complete. Any intervening command converts new constraints to "system" constraints. New only modifies the actions of Show and Clear.
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User
|
Act only on constraints assigned manually by the user. If the user modifies a system-generated constraint, it converts to a "user" constraint.
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System
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Act only on constraints generated by Complete and unchanged by the user.
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Used
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Act only on constraints actually used by the solver during the most recent Complete or Solve command.
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Unused
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Act only on constraints that were not used by the solver during the most recent Solve command.
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Banned
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Act only on constraints that have been banned by the user; i.e., constraints that cannot be assigned by Complete.
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Violated
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Act only on constraints marked "violated" by the most recent Solve.
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• Types:
These blocks specify the available constraint types. You must always specify a type for Assign, Show and Clear. Types can also be used to limit the actions of Free and Ban. A generic type, All Types, refers to all the available constraint types. See Constraint Types for a complete description of each type.
The following sections describe each of the constraint assignment commands.
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The default size and positioning of constraint icons may not be ideal. You can resize or change the color of icons via the Icon Setting dialog box and reposition them with  Move Icon. To update the icon display after changing their size or position, you can use the Creo Elements/Direct Drafting  Redraw button. The text labels that appear on some icons are drawn in the current Creo Elements/Direct Drafting text font. |