2011

■ Collinear
Infer Constraints with Line and Polyline
Certain object creation and editing commands can infer constraints regardless
of the current object snap settings.
LINE and PLINE commands infer coincident point-to-point constraints. The
Close option infers a coincident constraint between the start point of the first
line and the endpoint of the last line.
Infer Constraints with Rectangle, Fillet, and Chamfer
The RECTANG, FILLET, and CHAMFER commands infer constraints as follows:
■ RECTANG applies a pair of parallel constraints and a perpendicular
constraint to the closed polyline.
■ FILLET applies tangent and coincident constraints between the newly
created arc and the existing trimmed or extended pair of lines.
■ CHAMFER applies coincident contraints between the newly created line
and the existing trimmed or extended pair of lines.
The following commands are unaffected by the Infer Constraints setting:
■ SCALE
■ MIRROR
■ OFFSET
■ BREAK
■ TRIM
■ EXTEND
■ ARRAY
Infer Constraints with Move, Copy, and Stretch
When moving, copying, or stretching with the Infer Constraints on, you can
apply coincident, perpendicular, parallel, or tangent constraints between the
object being edited and the object being snapped to if the base point of the
edited object is a valid constraint point of that object.
824 | Chapter 20 Add Constraints to Geometry