Instantiating Power Copies
Using Step By Step Instantiation

Open the PowerCopyDestination2.CATPart document.

1. Click Instantiate From Document or select Insert > Instantiate From Document from the menu bar.

   The File Selection dialog box is displayed allowing you to navigate to the document where the PowerCopy is stored.

2. Select the document containing the Powercopy, and click Open.

   Here we selected the PowerCopyReference2.CATPart document.

   The Insert Object dialog box is displayed. Warning or error messages can be issued if the chosen destination is ambiguous or forbidden, for instance if you select an ordered geometrical set as the After destination. In case of an error message, the destination field is emptied and the OK button is unavailable. In case of a warning message, the power copy can still be instantiated but some elements may not be inserted in the chosen destination.

   Use the Reference list to choose the correct Power Copy when several have been defined in the document.

3. Select the Step by step instantiation mode.

   The Inputs field is grayed out.

4. Select the Destination of the instantiation.

   It is composed of two elements: a combo list corresponding to the relative position (Inside or After) and a field containing the destination feature.

   The destination depends on the current feature as it is automatically filled with the latter. If there is no current feature, the field is empty.

   When possible, you can modify the default destination, either by modifying the relative position or by selecting another destination feature. The destination is filled with After when the destination is a geometric feature. In this case, the After field is grayed out. The destination is filled with Inside when the destination is a geometrical feature set.

5. Click OK.

   A PowerCopy Instances node is automatically created in the specification tree of the current document. The Comparison Window opens on the right side of the screen and the Scan and Synchronization toolbars are launched.
   The Power Copy instance feature stores several information: A link to the referenced Power Copy. This link will be later used to retrieve the referenced CATPart and the inputs' geometry. The list of inputs to valuate in the current CATPart as well as their role. The list of parameters published by the Power Copy during its creation. The mapping between referenced objects and instantiated objects.
   You cannot delete the Power Copy instance feature as long as instantiated features inputs are not valuated. An error message is displayed if you do so. Deletion is possible only when instantiated features have all their inputs valuated, i.e. when the instantiation is completed, or when all instantiated features are deleted.
   	When editing a feature in the Comparison Window, the edited feature is highlighted simultaneously on both left and right sides of the screen, in specification trees and 3D areas.

6. Click First or First to update in the Scan toolbar to update the features instantiated by the PowerCopy.

   Only the Structure mode is available here.

   Each time the scan finds a feature that needs inputs, a dialog box is launched to valuate them. Only the necessary inputs are requested.

   Here Circle.1 is the first instantiated feature that need inputs.

   Note that: The visualization is automatically synchronized on Circle.1 (in the right viewer). It lets you visualized the reference model with the exact display during the circle creation. Indicators are displayed in the right viewer to identify the previous inputs and each input is highlighted. After the inputs are selected, the scan command is still active. You must select inputs in the order they appear in the dialog box.

7. Select the value for each input.

   After each selection, an indicator is displayed in the left viewer, with orientation when necessary. Click on the green arrow to reverse orientation if needed.

8. Click OK.

   Circle.1 is updated.

9. Click Next or Play update to continue the inputs valuation.
10. Once the update is finished, you can close the Scan command as well as the Comparison Window.

    	The Scan command can be interrupted at any step if you need to create or modify a feature to valuate an input. You can do so while the Comparison window is still active: simply re-launch the Scan command once the creation or modification is done. The Power Copy instance feature that contains all the information is persistent. Therefore you can save the CATPart before (or during) the Scan update, close your session, launch a new session and launch the Scan command again to valuate the inputs. Step by step instantiation is completed when all inputs are correctly selected. If you skip some steps (by direct selection in the tree during the Scan command or by using Last button for instance), you will still need to valuate the inputs of all intermediate steps and a warning message is issued. Indeed the Scan command stops as soon as a feature needs inputs valuation and this feature is then defined as the in work object, in order to prevent the selection of inputs which are below it.
    	If the reference CATPart is not found, the scan and the input valuation can be performed but the Comparison Window is not available and the old inputs (with reference orientation) cannot be displayed.

Nested Power Copies

Perform steps 1 to 5 of the Step by step instantiation.

6. Click Cancel in the Definition dialog box.

7. Click Instantiate From Document (or select Insert > Instantiate From Document... from the menu bar) and navigate to the PowerCopyReference3.CATPart document in the File Selection dialog box.

8. Select the Step by step instantiation mode.

9. Click OK.

   A new Comparison Window is created with the destination CATPart on the left and the TwoPointOnASurface PowerCopy reference on the right. You can either work from this window or switch to the initial window containing the destination CATPart.

   The new instantiated features are inserted after the current one: here after Point.2.

   The scan command is launched.

   A new Power Copy instance is added under the PowerCopy Instances node:

10. Click First or First to update in the Scan toolbar to update the features instantiated by the Power Copy.

    Only the Structure mode is available here.

    Each time the scan finds a feature that needs inputs, a dialog box is launched to valuate the inputs. Here Point.3 is the first instantiated feature that need inputs.

11. Select the value for the Reference surface.

    After each selection, an indicator is displayed in the left viewer, with orientation when necessary. Click on the green arrow to reverse orientation if needed.

12. Click OK.

    Point.3 is updated.

    The instantiation of TwoPointsOnASurface Power Copy is now completed. All instantiated features are updated and you may delete the Power Copy instance feature if desired and the corresponding Comparison Window can be closed.

13. Click Next or Play update .

    The next feature that needs inputs is Circle.1.

    As this feature belongs to the first instantiated Power Copy, the Comparison Window automatically changes to display the CATPart containing the right Power Copy reference. Even if the previous Comparison Window (corresponding to the TwoPointsOnASurface Power Copy instance) has not been closed, the Comparison Window corresponding to the right Power Copy instance (TwoSurfacicHoles) appears in the right viewer. Indicators are displayed in the right viewer to identify the previous inputs and each input is highlighted.

14. Select the value for each input.

    The first input can now be valuated with one of the two previously created features.

    After each selection, an indicator is displayed in the left viewer, with orientation when necessary. Click on the green arrow to reverse orientation if needed.

15. Click OK.

    Circle.1 is updated.

16. Click Next or Play update .

    An input is requested for Circle.2.

17. Select the other created point and click OK.

    Circle.2 is now updated and all inputs of TwoSurfacicHoles are valuated.

18. Close the Comparison Window.

    Now if you launch the Quick Select command , either in the left or in the right window, the visualization is updated in both windows: pre-highlighting is synchronous and a color code indicates the current selection (green labels) in the Quick Select dialog box and the parents/children (red labels). Once all Power Copies have been instantiated, you can close the comparison windows that are still open and delete the Power Copy instance features.