GeomConstraint

Works with Bricscad (Windows) Classic, Pro and Platinum, Bricscad (Linux) Classic, Pro and Platinum

Applies geometric relationships between entities and/or valid constraint points on entities.

Valid constraint points on an entity:

Entity Type	Valid Constraint Points
Line	Endpoints, Midpoint
Arc, Elliptical Arc	Endpoints, Center, Midpoint
Circle, Ellipse	Center
Polyline	Endpoints, vertices, midpoints of line and arc segments, center of arc segments
Spline	Endpoints
Insert (Block, Xref, Text, Mtext, Attribute, Table)	Insertion point

Valid constraint entities

Entity Type

Line

Polyline Segment

Circle

Arc, Elliptical Arc

Ellipse

Spline

Accessing the Command

command bar: geomconstraint

menu bar: Parametric | Geometric Constraints| item

toolbar: Geometric Constraints |

: geomconstraint

Prompts you in the command bar:

Enter constraint type [Horizontal / Vertical / Perpendicular / PArallel / Tangent / SMooth / Coincident / CONcentric / COLlinear / Symmetric / Equal / Fix] <Coincident>: (Enter an option).

Command Options

Option	Description
Horizontal	Constrains lines or pairs of points to lie parallel to the X-axis of the current coordinate system. This option is equivalent to the GcHorizontal command ().
Vertical	Constrains lines or pairs of points to lie parallel to the Y-axis of the current coordinate system. This option is equivalent to the GcVertical command ().
Perpendicular	Constrains two lines to lie perpendicularly to each other. This option is equivalent to the GcPerpendicular command ().
Parallel	Forces two lines to be parallel to each other. This option is equivalent to the GcParallel command ().
Tangent	Constrains two entities to maintain a point of tangency to each other or their extensions. This option is equivalent to the GcTangent command ().
Smooth	Forces a spline to maintain fluid geometric continuity with another spline, line, arc or polyline. This option is equivalent to the GcSmooth command ().
Coincident	Applies a coincident geometrical constraint to two points or constrains a point to an entity. This option is equivalent to the GcCoincident command ().
Concentric	Constrains the center points of circles, arcs, ellipses or elliptical arcs to coincide. This option is equivalent to the GcConcentric command ().
Collinear	Forces lines to be collinear. This option is equivalent to the GcCollinear command ().
Symmetric	Constrains two entities or points to lie symmetrically with respect to a selected line. This option is equivalent to the GcSymmetric command ().
Equal	Constrains arcs and circles to the same radius, or lines to the same length. This option is equivalent to the GcEqual command ().
Fix	Constrains points and entities at a fixed position. This option is equivalent to the GcFix command ().

Related Commands

GcCoincident - applies a coincident geometrical constraint to two points or constrains a point to an entity.

GcCollinear - forces lines to be collinear.

GcConcentric - constrains the center points of circles, arcs, ellipses or elliptical arcs to coincide.

GcEqual - constrains arcs and circles to the same radius, or lines to the same length.

GcFix - constrains points and entities at a fixed position.

GcHorizontal - constrains lines or pairs of points to lie parallel to the X-axis of the current coordinate system.

GcParallel - forces two lines to be parallel to each other.

GcPerpendicular - constrains two lines to lie perpendicularly to each other.

GcSmooth - forces a spline to maintain fluid geometric continuity with another spline, line, arc or polyline.

GcSymmetric - constrains two entities or points to lie symmetrically with respect to a selected line.

GcTangent - constrains two entities to maintain a point of tangency to each other or their extensions.

GcVertical - constrains lines or pairs of points to lie parallel to the Y-axis of the current coordinate system.

Dimconstraint - applies a dimensional constraint to an entity or between constraint points on entities; converts associative dimensions to dynamic dimensions.