2012

Summary
When you apply a geometric constraint to a pair of objects, the order in which
the objects are selected and the point on which each object is selected can
affect how the objects are positioned relative to each other.
The following table outlines the valid constraint points for an object.
Valid Constraint PointsObjects
Endpoints, midpointLine
Center, endpoints, midpointArc
EndpointsSpline
CenterCircle
Center, major and minor axesEllipse
Endpoints, midpoints of line and arc sub-
objects, center of arc subobjects
Polyline
Insertion pointXref, attribute, table
Insertion point, nested entitiesBlock
Insertion point, alignment pointText, multiline text
The following commands are equivalent to each GEOMCONSTRAINT option:
Horizontal (
GCHORIZONTAL on page 841) Causes lines or pairs of points to
lie parallel to the X axis of the current coordinate system.
Vertical (GCVERTICAL on page 849) Causes lines or pairs of points to lie
parallel to the Y axis of the current coordinate system.
Perpendicular (GCPERPENDICULAR on page 844) Causes selected lines to
lie 90 degrees to one another.
Parallel (GCPARALLEL on page 843) Causes selected lines to lie parallel to
each other.
Tangent (GCTANGENT on page 848) Constrains two curves to maintain a
point of tangency to each other or their extensions.
GEOMCONSTRAINT | 857