Make the other choices as with the 2D tool. To duplicate objects in-plane, use the tool like the WildTools Radial Duplicate tool. The only difference is that the rotation is in the current view plane. To duplicate objects in a spiral, set the tool to spiral duplication, and use the method shown below for the 3D Radial Repeat tool, which is the tool you normally use for spiral duplications. The 3D Radial Repeat tool allows you to radially duplicate selected objects in the current view plane by drawing an arc with the mouse.
Spiral duplications are also available.
The repeat angle is set in the tool's dialog, and the number of duplications is determined by the angle of the arc that you draw. Thus the number of duplications depends on the angle that you indicate-the farther you drag, the more objects are duplicated. In the case of a spiral duplication, you may have any number of complete revolutions. Spiral staircases are nothing. The 3D Radial Distribute tool allows you to radially duplicate selected objects in the current view plane by drawing an arc with the mouse.