Revolution Property Editor (Curve about Curve)

Creates a surface or polygon mesh by revolving one curve around an axis defined by another curve.

To apply: See Revolving Curves Around Curves [Modeling and Deformation Basics].

To redisplay: Select the revolved object then choose Edit Properties Modeling Properties and click the Revolution tab.

Inputs

Hide/Unhide	Hides all the inputs for the generated object to simplify the display of your scene in the 3D views, or unhides the inputs when you need to modify them.
Delete	Freezes the generator and deletes the inputs. This simplifies the scene once you are satisfied that you won't need to modify the inputs again.

Automatic Uvs

Generate

Automatically generates explicit texture UV coordinates. The UVs created in this way are evenly spaced according to the number of segments (edges or knot curves) in each direction.

The UV generation is "live". If you change the number of subdivisions set in the generator operator, the UV coordinates are automatically updated. If you change the number of subdivisions after you have manually edited the UVs, you probably won't get desirable results because the UV indices have changed. If you freeze the UV coordinates, the generator operator is frozen as well.

Clicking this button multiple times does not generate multiple UV projections.

Subdivisions

Subdivision Type

Determines how you specify the number of subdivisions in the result.

Per Span uses the "natural" subdivisions as determined by the shapes of the inputs. You can subdivide each segment further using the U and V span sliders.

In this case, discontinuities resulting from multiknots in the inputs are preserved in the generated objects.
Absolute allows you to set the total number of subdivisions using the U and V abs sliders.

U, V span

The number of subdivisions corresponding to each segment of the inputs, when Subdivision Type is Per Span.

U, V abs

The total number of subdivisions, when Subdivision Type is Absolute.

Open/Close

Specifies whether the revolved surface is open or closed in U and V. These option work only if the corresponding input curves are open. If the input curves are closed, the surface will always be closed in the corresponding direction.

Revolution

Start Angle

The angle in degrees at which the revolution starts, with respect to the revolution curve.

Revolution Angle

The angle in degrees through which the revolution sweeps, beginning at the Start Angle. When this value is 360 degrees, the revolution sweeps through a complete rotation no matter what the value of the Start Angle.

Revolution Axis

The axis around which the profile curve is revolved:

End Points: the profile is revolved about a straight line connecting the second curve's endpoints.
Start Tangent: the profile is revolved around the tangent of the second curve at its U = 0 boundary.
End Tangent: the profile is revolved around the tangent of the second curve at its U = 1 boundary.