We have enhanced the interface of the Surfaces > Revolve tool and added new functionality.

The tool now uses a control window rather than an option window, allowing the options to be modified and the surface to update interactively while inside the tool.

The revolved surface can now:

• Be either periodic or non-periodic (default).
• Have any degree between 1 and 7 (the default is 5).
• Be broken into several individual surfaces using the Segments option (non-periodics only). The surfaces are grouped and curvature continuous with each other.

The axis of revolution can:

• Be set parallel to the X, Y, or Z axis (Local or Global) at any time from inside the control window (or by typing X, Y or Z on the prompt line).
• Be set to a vector object by using the Picked option.
• Be converted to a vector object through the Retain Vector option.

As before, only one item can be selected when using Local mode. Group the objects to revolve them around the rotation pivot of the group, or use Global mode.

All the curves selected within the same invocation of the tool belong to a single history command and can be modified simultaneously when the Revolve tool is re-entered through Query Edit.

New control options Chain select and Auto recalc behave the same as in other Surfaces tools. If Continuity check is on, it displays continuity locators at the boundaries of the different surfaces when Segments is greater than 1.

New buttons Recalc, Undo All, and Next behave the same as in other Surfaces tools.

The behavior of the manipulator remains the same, except that you can now snap the axis and its end points to the grid, control points, or geometry.