Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010 User Manual page 277

Specify the Pivot Point
The pivot point is the base point used when rotating the model with the Orbit tool. You can specify the
pivot point in the following ways:
Default pivot point. When you first open a model, the target point of the current view is used as the
pivot point for orbiting the model.
Select objects. You can select objects before the Orbit tool is used to calculate the pivot point. The pivot
point is calculated based on the center of the extents of the selected objects.
Center tool. You can specify a point on the model to use as the pivot point for orbiting with the Center
tool.
CTRL+Click and drag. Press and hold down the Ctrl key before clicking the Orbit wedge or while the Orbit
tool is active; then drag to the point on the model you want to use as the pivot point. This option is only
available when using the big and mini Full Navigation wheels or the mini View Object wheel.
NOTE While the Orbit tool is active, you can be press and hold the Ctrl key at anytime to move the pivot point
used by the Orbit tool.
Maintain Up Direction
You can control how the model orbits around the pivot point by choosing to maintain the up direction of
the model. When the up direction is maintained, orbiting is constrained along the XY axis and in the Z
direction. If you drag horizontally, the camera moves parallel to the XY plane. If you drag vertically, the
camera moves along the Z axis.
If the up direction is not maintained, you can roll the model using the roll ring which is centered around
the pivot point. Use the Options dialog for the SteeringWheels to control whether the up direction is
maintained or not for the Orbit tool.
To orbit a model with the Orbit tool
1 Display one of the View Object or Full Navigation wheels.
2 Click and hold down the Orbit wedge.
The cursor changes to the Orbit cursor.
3 Drag to rotate the model.
NOTE Use the Center tool to re-center the model in the current view, if you are using one of the Full Navigation
or View Object wheels.
4 Release the button on your pointing device to return to the wheel.
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