Constrain Angle

Constrain Angle only applies to the second point of a two point segment, such as a single line or side of a polygon. Two points define an angle. Constrain Angle means that the SmartCursor finds only the angles specified. By default, the SmartCursor finds horizontal and vertical angles, as well as common angles, such as 30°, 45°, and 60°. Constrain Angle can also detect a plan rotation angle (Design Series required); items created along that angle when in a rotated plan view, appear horizontal when in a non-rotated, world coordinate view.

 

To select or define the snapping angle:

1.	Double-click the Constrain Angle constraint.

The Angle Snaps dialog box opens.

 

Parameter	Description
30, 60	Finds angles at 30° or 60°; the SmartCursor finds angles with respect to any horizontal or vertical axis, which includes 30°, 60°, 120° (90+30), 150°(90+60), 210° (180+30), and so on
45	Finds angles at 45°; the SmartCursor finds angles with respect to any horizontal or vertical axis, which includes 45°, 135° (90+45), 225°(180+45), and so on
Plan Rotation (Design Series required)	Finds the angle of plan rotation; this snap is useful when drawing in a rotated top/plan view, and requiring objects to be horizontal when the plan is no longer rotated
Next Mouse Drag	Defines an alternate snap angle about the X axis based on the next mouse drag
Enter Angle	Sets an angle other than 30°, 45°, or 60°. Enter an alternate angle ‘x’. The SmartCursor finds angles with respect to any horizontal or vertical axis, which includes x, 90+x, 180+x, and so on.
Extension Lines	Draws extension lines between the end of an angled line and a snap point

Holding the Shift key while drawing forces the SmartCursor to select the nearest drawn angle.

2.	Click OK to set the Constrain Angle options.