Automatically

• Capture smart points automatically by hovering briefly over an object snap point.

Manually

1. Tap Ctrl once to place a manual smart point anywhere in space.

   This makes it easy to for example to place smart points along curves.

2. Tap Ctrl twice to clear all smart points.

Note

• Captured smart points are drawn in their own color and styles: gray with a cross for captured, but not currently active points (that is they are not sending out any tracking lines), and blue for active smart points.
• Tracking lines are drawn once a smart point is captured and the cursor is in a predictable relation with the captured point(s).
• In this case, predictable means that the cursor is along or near an ortho line through the point, at or near the intersection between ortho lines from two smart points. Ortho tracking lines pay attention to the OrthoAngle setting.
• When a single smart point is highlighted and you see the ortho cursor with a distance, type a distance or Enter relative coordinates to place a point relative to the active smart point.

Example 1

1. Start the Polyline command.
2. Place some points.
3. With Point object snap on, hover over one of the previous polyline vertices (or any other snap) to wake up a smart point and pull the cursor away along an ortho tracking line.
   You should see the cursor tooltip telling you a distance from the Smart point and an angle.
4. Type a single number and press Enter to place the next point on the polyline that number of units away from the Smart Point in the direction you are pulling along the tracking line.
5. Type rx,y,z then the r will make the point relative to the active smart point.
   This only works along a tracking line from a single active smart point.

Example 2

1. Start the Polyline command.
2. Place some points.
3. With Point object snap on, hover over one of the previous polyline vertices (or any other snap) to wake up a smart point and pull the cursor away along an ortho tracking line.
   You should see the cursor tooltip telling you a distance from the Smart point and an angle.
4. Type a single number and press Alt +Enter to activate distance constraint for the next pick.
   Without the Alt key, the pick will be finalized number units away from the active smart point rather than the last point picked.

Example

1. Enable the end object snap.
2. Draw a curve or a polyline.
   When you snap to a curve end, you can see the smart tangent tracking line.
   

Example

1. Enable Smart tangents and perpendiculars.
2. Draw a polyline.
   Every time you click, a smart point is generated at the current end point of the polyline.
3. Snap to a curve end, the ortho tracking line appears.
   

Example

1. Enable Parallels.
2. Snap to a curve end and another point with a different type of object snap.
   You will see the parallel tracking line (when the mouse cursor is close to the parallel tracking line).

Add guides

1. Start the command.
2. Pick two points in the viewport to set a guide.
   The points can be picked on the CPlane, or in 3-D space.
   

Enable/Disable guides

• Click the SmartTrack pane in the status bar to toggle existing guides on and off.
  Pressing Alt temporarily hides and disables guides.

Delete guides

• Use the RemoveGuide command.
  

Change appearance

• Go to Options > Modeling Aids > SmartTrack and Guides > Appearance.
  You can select a different color to display guides.
  

Delete a guide

1. Start the command.
2. Click on the guides to remove.

Clear all guides

1. Start the command.
2. Select the RemoveAll option in the command-line.

Steps

• Specify a command line option.