Edit Curves > Modify Curves > Lock Length

 
 
 

When you select Edit Curves > Modify Curves > Lock Length, the selected curve (or selected CVs) will maintain a constant hull length. If you then modify the curve, for example, by moving a CV, the shape of the curve will adjust so that it maintains a constant hull length (that is, CVs other than the one you move will also move).

When you select Edit Curves > Modify Curves > Lock Length, a Lock Length attribute is added to the curveShape node.

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