Mouse Model

The mouse model of FreeCAD is very flexible and intuitive and with a few hints you can use it after a only minute of practice.

General Mouse Model
This describes the mouse usage that is common to all workbenches.


 * Select: Press the left mouse button over an object you want to select.


 * Zoom: Use the + or - keys or the mouse wheel to zoom in and out.


 * Pan: Click the middle mouse button and move the object around.


 * Rotate: Click first with the middle mouse button, hold it and the click the left mouse button on any visible part of an object and drag it in the desired direction. This works like spinning a ball that rotates around its center. If you release the buttons befor you stop your motion, the object continues spinning, if this is enabled.


 * Setting Center of Rotation: A double click with the middle mouse button on any part of an object sets the new center of rotation and zooms in on this point.

Manipulators
FreeCAD offers manipulators that can be used to modify an object or its visual appearance. A simple example is the clipping plane wich can be activated with the View→Clipping Plane menu. After activation the clipping plane object appears and shows seven obvious manipulators as little boxes: One on each end of its three coordinate axes and one on the center of the plane normal axis. There are four more that are not as obvious: The plane it self and the thin part of the three axis objects.


 * Scaling: To scale the object click with the left mouse button on the box manipulators at the end of the axes and pull them back and forth. Depending on the object the manipulators work independently or synchronously.
 * Out of plane shifting: To shift the object along its normal vector, pull the long box on the center of an axis with the left mouse button. For the clipping plane there is only one manipulator along the normal vector.
 * In plane shifting: To move the center of the clipping plane, click on the plane object and pull it to the desired location.
 * Rotation: Clicking on the thin part of the axes puts the manipulator in rotation mode.