Edit network curves while maintaining intersections

Edit a network curve using the normal curve editing tools, while maintaining the intersections with the other curves in the network.

Normally when you edit a curve in the network, you run the risk of moving or reshaping the curve out of intersections with the rest of the network. To prevent this you can lock the curve intersections so editing tools won’t disrupt them.

To show the curve network toolbox, choose Surfaces > Curve Networks.

Lock a curve to maintain intersections

Choose CrvNet Tools > Lock Intersection.
Click a free network curve you want to lock.
The curve network surfaces become invisible and the curve highlights.
Use editing tools to edit the curve.
Note
You can only lock one curve at a time.

Unlock a locked curve

Choose CrvNet Tools > Lock Intersection.
Do one of the following:
- Click the curve to unlock it. The surfaces reappear and are updated.
- Click another curve to lock and edit that curve. This automatically unlocks the previously locked curve.

Notes

You can only lock a free curve. Isoparametric curves, trim edges and curves on surface cannot be locked.
You can only lock intersections on networks without sculpt curves. If you want to use the Lock intersection tool, you will have to remove any sculpt curves from the network first.
You cannot use curve network tools on the network while a curve is locked. For example, you cannot add or remove curves, or change continuity.
To edit the curve network, unlock the locked curve by choosing the Lock intersection tool and clicking the locked curve.
If you edit any curve other than the locked curve, the locked curve is unlocked and the curve network returns to its normal state.
If you save the file while a curve is locked, it will be unlocked when you open the file again.