BOUNDARY Command
Creates a polyline from an enclosed area
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Draw toolbar:
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Draw menu: Boundary |
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Command line: boundary
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The Boundary Creation dialog box is displayed.
If you enter -boundary at the Command prompt, AutoCAD LT presents options on the command
line.
Advanced options / Internal point:
Specify a point or enter a
Boundary Creation Dialog Box
Define Boundary Set
Defines the set of objects that AutoCAD LT uses to define a boundary
based on a pick point.
- From Everything on Screen. Creates a boundary set from everything visible on the screen.
Selecting this option when there's a current boundary set discards
the current set and uses everything visible in the current viewport.
- From Existing Boundary Set. Selects the current boundary set.
- Make New Boundary Set. Selects a set of objects. When you choose Make New Boundary Set,
all dialog boxes close to allow object selection. AutoCAD LT includes
only the hatchable objects you select when it constructs the new
boundary set. If there's already a boundary set, it's discarded
and replaced by the new one. If you do not select any hatchable
objects, AutoCAD LT retains any current set. Until you exit BHATCH
or define a new boundary set, AutoCAD LT uses only the objects
you have selected to construct boundaries.
Island Detection
Uses objects within the outermost boundary as boundary objects.
Pick Points
Accepts all selections in the dialog box. The dialog box closes
so that you can select the internal points that define the boundary
object. Press ENTER when you finish selecting internal points.
Refines the method AutoCAD LT uses to create the boundary.
Boundary set / Island detection / <eXit>:
Enter an option or press ENTER
Defines the set of objects analyzed when AutoCAD LT defines a
boundary from a specified point.
New / Everything: Enter
an option or press ENTER
Specifies whether objects within the outermost boundary are used
as boundary objects.
Do you want island detection? <current>:
Enter y or n, or press ENTER
Specifying no island detection prompts for the ray casting method.
Specify ray:
Nearest / +X / -X / +Y / -Y / Angle
<current>: Enter an option or press ENTER
- Nearest.
Runs a line from the point you specify to the nearest object and
then traces the boundary in a counter clockwise direction.
- +X.
Runs a line in the positive X direction from the point
you specify to the first object encountered and then traces the
boundary in a counterclockwise direction.The illustration indicates
that the valid internal points for positive X direction
ray casting are nearest the right-hand edges of the circle. The
X indicates the area that causes a boundary definition
error.
- -X.
Runs a line in the negative X direction from the point
you specify to the first object encountered and then traces the
boundary in a counterclockwise direction.
The illustration indicates that the valid internal points for
negative X direction ray casting are nearest the left-hand
edges of the circle. The X indicates the area that causes a boundary definition error.
- +Y.
Runs a line in the positive Y direction from the point
you specify to the first object encountered and then traces the
boundary in a counterclockwise direction.
The illustration indicates that the valid internal points for positive Y direction ray casting are nearest the upper edges of the circle. The X indicates the area that causes a boundary definition error.
- -Y.
Runs a line in the negative Y direction from the point
you specify to the first object encountered and then traces the
boundary in a counterclockwise direction.
- Angle. Runs a line at the specified angle from the point you specify
to the first object encountered and then traces the boundary in
a counterclockwise direction.
Ray casting angle: Specify an angle
Returns to the initial prompt of the BOUNDARY command.
Creates a boundary from existing objects that form an enclosed
area. Select a point inside the area.
Related Commands: PLINE creates 2D polylines. BHATCH fills
an enclosed area with a hatch pattern.