Use the Curves > New Curves > New CV Curve or Curves > New Curves > New Edit Point Curve tools to draw curves by clicking to place CVs or edit points.
Set up the New Curve tools
To set what parameterization and degree the curves you draw will have, open the tool’s option box and set the and options.
Draw curves by placing CVs
- Choose Curves > New Curves > New CV Curve.
- Click in view windows to place the CVs of the new curve, or type coordinates for the CV locations.
See Use the mouse and keyboard in tools.
For a degree 3 curve (default), the curve will only appear after 4 CVs have been placed.
Note
The general rule is that a curve of degree m requires m+1 CVs before becoming visible. To see the curve sooner, turn on in the option box.
Tip
The first CV in the curve is shown as a square and the second as a “” instead of a cross. This helps show the direction of the curve.
- Choose the tool again to start another curve.
Draw curves by placing edit points
- Choose Curves > New Curves > New Edit Point Curve.
- Click in view windows to place the edit points of the new curve, or type coordinates for the CV locations.
See Use the mouse and keyboard in tools.
- Choose the tool again to start another curve.
Tip
This tool is useful when you want to create a single span curve from two end points.
Tip
You can continue drawing curves between view windows. For example, click the first point in the Top window, click the second
point in the Back window, and so on.