Reverse the tangent direction of a curve (by swapping the start and end points), or the parametric directions (U/V) of a surface.
Reverse, swap, or examine the directions (tangents) of a surface
- If you want to reverse the direction of several surfaces at once, select them now.
- Choose Surface Edit > Reverse Surface UV .
- In the option box, choose whether you want to reverse the U direction, the V direction, or swap U and V.
- Click on the first surface you want to examine or reverse.
An indicator appears on the surface showing the current tangent(s) (U, V, or both, depending on the option chosen).
- Do any of the following:
- Click the and drag over the surface to examine the tangent direction(s).
- Click the or the button in the window to reverse the surface you clicked.
- Click the or the button in the window to reverse all selected surfaces.
- Click on another surface and repeat step 5.
Note
Reversing the direction of the U and V parameters on a surface affects the surface normal, but does not affect the surface orientation. See Normals and surface orientation for details.
Reverse the direction of a curve
- Choose Curve Edit > Reverse Curve.
- Click the first curve you want to reverse.
The tangent of the curve is shown at the point where you clicked.
- Do any of the following:
- Click the and drag along the curve to examine the tangent direction.
- Click the or the button in the window to reverse the curve you clicked.
- Click the or the button in the window to reverse all selected curves.
- Click on another curve to add to the selection and repeat step 3.
Note
You can also select all the curves you want to reverse before entering the tool.