Use Polar Tracking And Polarsnap - Autodesk 057B1-41A111-1001 - AutoCAD LT 2010 User Manual

As you create or move objects, you can use Ortho mode to restrict the cursor
to the horizontal or vertical axis. As you move the cursor, the rubber-band
line follows the horizontal or vertical axis, whichever is nearest the cursor.
The orientation of the current user coordinate system (UCS) determines the
horizontal and vertical directions. In 3D views, Ortho mode additionally
restricts the cursor to the up and down directions. In that case, the tooltip
displays a +Z or -Z for the angle.
TIP
Use direct distance entry with Ortho mode turned on to create orthogonal
lines of specified lengths or to move objects specified distances.
You can turn Ortho on and off at any time during drawing and editing. Ortho
is ignored when you enter coordinates or specify an object snap. To turn Ortho
on or off temporarily, hold down the temporary override key, Shift. While
you use the temporary override key, the direct distance entry method is not
available.
For drawing or editing objects at angles that are not parallel to the horizontal
or vertical axis, see

Use Polar Tracking and PolarSnap

(page 154).
If turned on, the isometric snap setting takes priority over the UCS in
determining horizontal and vertical directions.
NOTE
Ortho mode and polar tracking cannot be on at the same time. Turning on
Ortho turns off polar tracking.
See also:
Override Object Snap Settings (page 149)
Use Polar Tracking and PolarSnap
Polar tracking restricts cursor movement to specified angles. PolarSnap restricts
cursor movement to specified increments along a polar angle.
When you are creating or modifying objects, you can use polar tracking to
display temporary alignment paths defined by the polar angles you specify.
In 3D views, polar tracking additionally provides an alignment path in the
up and down directions. In that case, the tooltip displays a +Z or -Z for the
angle.
154 | Chapter 6 Create and Modify Objects