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Notes on working with curves, having subordinate curve objects |
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Curves created by certain commands consist of subordinate curve objects, which are obtained as a result of contour construction. Such curves include:
•Outline,
In the Design Tree, subordinate objects-curves are presented as 
Contour (1), Contour (2), and so on. The exception is the fillet curve, whose subordinate objects are the resulting curve and trimmed copies of the source curves.
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A subordinate object-curve is not always a separate contour within the composition of a curve. So, for example, in a fillet curve, the subordinate objects |
The visibility of subordinate objects of a curve can be managed in the Tree using the Visible 
/Hidden 
icons and the Hide/Show commands in the context menu. If all subordinate objects are hidden, then the host curve becomes hidden too. More about controlling visibility of individual objects...
Subordinate objects of outline lines, projection curves, rolled curves, intersection curves, and curves by two projections can also be excluded from the calculation. To that end, select the required subordinate object in the Design Tree and click the icon Excluded from calculation 
or call the Exclude from calculation item in the context menu.
Subordinate objects of the rounding curve and groups of isoparametric curves cannot be excluded from the calculation independently. If the exclusion command is called for a subordinate object, the entire curve is excluded from the calculation.
To include subordinated objects in the calculation, the Included in Calculation 
icon and the Include into Calculation command from the context menu are used. For more details on managing the state of 'included in calculation' for individual objects...
Using curves in operations
Curves with subordinate curve objects can be used in the construction of solids and surfaces by various operations. You can select the entire curve or some of the contours within it for construction.
Notes on Indicating Curves with Subordinate Objects-Curves:
•The entire curve or its subordinate object is specified in the Design Tree. When specified in the graphic area, a segment of the corresponding subordinate object or the entire subordinate object is selected if specifying the segment is not possible.
•In some operations, you can't use a curve with multiple separate contours. When attempting to specify such a curve as a whole, the following occurs (depending on the type of operation):
•Selection of the entire curve is not available,
•the entire curve is selected, but you can't confirm the operation,
•The entire curve is selected and the operation can be confirmed, but building is only performed for the first contour of the curve (e.g., in operations). trimming a curve and Equidistant to curve).
Further work with the model may change the set of subordinate curve objects and the objects themselves. In this case, the result of the operation using the curve will change as well.
