Managing Ordered Geometrical Sets

You can insert an ordered geometrical set in the specification tree.

1. In the specification tree, select an element as the location of the new ordered geometrical set. This element will be considered as a child of the new ordered geometrical set. Inserting an Ordered Geometrical Set does not break the succession of steps as the order applies to all the elements of a same root ordered geometrical set.

2. Select Insert > Ordered Geometrical Set... from the menu bar.

   The Insert Ordered Geometrical Set dialog box is displayed.

   The Features list displays the elements to be contained in the new ordered geometrical set.

   
   
   

3. Enter the name of the new ordered geometrical set you wish to insert.

4. Use the Father drop-down list to choose the body where the new ordered geometrical set is to be inserted. All destinations present in the document are listed allowing you to select one to be the father without scanning the specification tree. They can be:

   
   

   • ordered geometrical sets

   • representations

   By default the destination is the father of the current object. By default the ordered geometrical set is created after the current feature.

5. Select additional entities that are to be included in the new ordered geometrical set.

   Tip: If all selected entities belong to the same ordered geometrical set, the father of the new ordered geometrical set is automatically set to the father of these entities.

6. Click OK to create the ordered geometrical set at the desired location.

   The result is immediate. CATIA displays this new Ordered Geometrical Set.x, incrementing its name in relation to the pre-existing bodies, in the specification tree. It is created after the last current ordered geometrical set and is underlined, indicating that it is the active ordered geometrical set.

Important: You can insert an ordered geometrical set after the current feature. You can insert a body into an ordered geometrical set. For further information, refer to Inserting a Body into an Ordered Geometrical Set. The state of a geometrical set is kept in your data model. For instance, if the geometrical set was expanded when closing the model, it is still expanded when re-opening it; except if it has more than 40 children: in this case, it is automatically collapsed.

Warning: You cannot create an ordered geometrical set within a geometrical set and vice versa.

You can remove an ordered geometrical set from the specification tree.

You can remove a feature within an ordered geometrical set.

You may need to sort the contents of an ordered geometrical set, when the geometric elements no longer appear in the logical creation order. It may be the case if you enabled the selection of drawn or future geometry.

In that case, use the Auto-sort capability to reorder the ordered geometrical set contents in the specification tree. The ordered geometrical set contains a line based on two points lines. The specification tree looks like this:

The reordering capability enables you to reorder elements inside the same ordered geometrical set.

1. Right-click the geometrical set from the specification tree and choose the Geometrical Set.x object > Reorder Children command. The Reorder Children dialog box is displayed.

2. Select an element.

3. Use the arrows to move an element up or down.

   
   
   

Warning: You cannot move an element from a geometrical set to an ordered geometrical set as it may break the order rules. Reordering contextual features does not modify their mode: they are always set to Keep mode at creation and remain in Keep mode after being reordered.

You can modify the contents of an ordered geometrical set by selecting its first and last component, as well as destroy it.

Warning: This command is only available on sub-ordered geometrical sets.

1. Right-click the sub-ordered geometrical set from the specification tree and choose the Ordered Geometrical Set.x object > Modify Children.

   The Edit ordered geometrical set dialog box opens with the First element and Last element fields automatically valuated with the first and last elements of the ordered geometrical set.

   
   
   

2. Select the elements you wish to place first and last.

   In our scenario, we chose Line.1 as the first element and Split.1 as the last element.

   
   
   

3. Click OK.

   The specification tree is modified consequently. Elements before or after the first and last elements are rerouted in the father ordered geometrical set.

   
   
   

   The Modify children command also allows you to remove the sub-ordered geometrical set. As a consequence, elements are rerouted in the father ordered geometrical set.

   
   
   

You can replace the feaures within the geometrical set.

This capability is only available on shape elements.

1. Right-click the geometrical set from the specification tree and choose the Geometrical Set.x object > Replace... command.The Replace dialog box is displayed.

2. Select the replacing element.

3. Click OK.

   For more information, refer to the Replacing Elements chapter in the Part Design User's Guide.

   To manage this capability, the Do replace only for elements situated after the In Work Object option is available in Tools > Options > Infrastructure > 3D Shape Infrastructure > General tab. It allows you to make the Replace option possible only for features located below the feature in Work Object and in the same branch.

While in an ordered geometrical set environment, you may want to switch to a geometrical set environment (for instance, if you do not want to work in an ordered environment any more).

Warning: This command is only available on a root ordered geometrical set. Switching from geometrical set to ordered geometrical set is not possible. Colors may be modified.

A feature can be created within an OGS using different feature types (creation or modification) depending on the options selected to create it. If a feature is created as a modification feature, then when editing it, you are prevented from changing the options that were used to define its type.

Here is the list of commands whose options lead to a modification of the feature type:

Let's take an example with the corner feature.

1. Click Corner .

   The Corner Definition dialog box opens.

2. Choose the Corner On Support type from the combo list.

3. Clear the Corner On Vertex check box.

4. Select two lines as Element 1 and Element 2.

5. Select the Trim element 1 and Trim element 2 check boxes to trim and assemble the two reference elements to the corner. By selecting these options, the corner is now considered as a modification feature.

   
   
   

6. Click OK to create the corner.

7. Double-click the corner (in the specification tree or in the 3D geometry) to edit it.

   The Corner Definition dialog box opens.

   
   
   

   Both Trim options are disabled.