Feature curves can be automatically created for a given set of boundaries by marking edges based on different criteria. Curves can be created for a single boundary or multiple boundaries simultaneously. Thereafter, additional feature curves can be manually added or the original set edited so that the exact edge curve definition is obtained.
To create a new set of feature curves, right-click on the Feature Curves node for the desired region and select New Feature Curve > Mark Edges... from the pop-up menu. This selection is shown below:
This will open the Mark Feature Edge Options dialog:
The boundaries that require feature curves should be first selected. The Feature Edge Options criteria can then be reviewed and the appropriate selections for the given boundary set made. The following options are available:
Press the Apply button to perform the operation. The feature curve node name for the feature curves created will be based on the method used. For example, if the Mark sharp edges option was selected with the default angle criteria then the feature curve node name would be Sharp Edges (31 deg.). When more than one selection criterion are used, the generic node name Feature Curve is used. An example entry is shown below:
If you don't want to create feature curves automatically and would prefer to start from a blank definition and add them in by hand, then right-click on the Feature Curves node and select New Feature Curve > Empty from the pop-up menu. This selection is shown below:
A new feature curve node (with the generic name Feature Curve) will be created to which new feature curves can be added by hand.