Track To Points On Objects (Object Snap Tracking) - Autodesk 057B1-41A111-1001 - AutoCAD LT 2010 User Manual

Track to Points on Objects (Object Snap Tracking)

You can draw objects at specific angles or in specific relationship to other
objects along specified directions called alignment paths.
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AutoTrack helps you draw objects at specific angles or in specific relationships
to other objects. When you turn on AutoTrack, temporary alignment paths
help you create objects at precise positions and angles. AutoTrack includes
two tracking options: polar tracking and object snap tracking.
You can toggle AutoTrack on and off with the Polar and Otrack buttons on
the status bar. Use temporary override keys to turn object snap tracking on
and off or to turn off all snapping and tracking. See the keyboard illustration
in Override Object Snap Settings (page 149).
Object snap tracking works in conjunction with object snaps. You must set
an object snap before you can track from an object's snap point.
Object Snap Tracking
Use object snap tracking to track along alignment paths that are based on
object snap points. Acquired points display a small plus sign (+), and you can
acquire up to seven tracking points at a time. After you acquire a point,
horizontal, vertical, or polar alignment paths relative to the point are displayed
as you move the cursor over their drawing paths. For example, you can select
a point along a path based on an object endpoint or midpoint or an
intersection between objects.
NOTE You can track Perpendicular or Tangent object snap from the last picked
point in a command even if the object snap tracking is off.
In the following illustration, the Endpoint object snap is on. You start a line
by clicking its start point (1), move the cursor over another line's endpoint
(2) to acquire it, and then move the cursor along the horizontal alignment
path to locate the endpoint you want for the line you are drawing (3).
160 | Chapter 6 Create and Modify Objects