The advanced rotation options let you precisely adjust the rotation of your view.
Reposition rotation triad
Moves the rotation triad to a position that you specify. The rotation triad indicates the point about which the rotation occurs. Select a point in the graphic view to specify the new location.
Set rotation triad to center of view
Moves the rotation triad to the center of the view volume.
Planar rotation (SHIFT + right mouse drag)
Limits the rotation to the view plane.
Rotation angle
Specifies the step angle that Smart 3Dx uses when you select the Active rotation plane.
Active rotation plane
Specifies the plane in which Smart 3Dx rotates the view. The available options include:
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Y-Z Plane
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X-Z Plane
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X-Y Plane
Select to rotate the model in the active plane by the Rotation angle. Press SHIFT and select to rotate in the opposite direction.