Create a curve from a library of pre-drawn curves (sweeps)
The Sweeps tool is designed for use as part of a workflow: pick the curve from the library, transform it into place, trim it to the section you want, and set its pivot point.
Create a curve from a sweeps library
- In the Curves tool palette, select the Primitives > Sweeps tool
, then the 
icon. - The sweeps window has two tabs for a standard (site-wide) library and your own (user-defined) library. Click a sweep displayed in one of the tabs.
- Click in a view window to place the curve.
- Do any of the following:
- Click Transform and use the transform manipulator to move, rotate, or scale the curve.
- Click Trim to trim the curve (see below).
- Click Pivot to move the curve’s pivot point (same as using the Transform > Local > Set Pivot
). - Click Create to create another curve using the selected library sweep.
Trim the curve
- While using the Sweeps tool, click Trim.
- Click to place manipulators at the start and end points of the section you want to keep.
- A red arrow indicates which part of the curve will be kept. Click the other part of the curve to switch the red arrow.
- Click Go to trim the curve, or click Transform, Pivot, Create, or another tool to cancel the trim.