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MANIPULATING 2D
OBJECTS
BDA 10102
COMPUTER AIDED DESIGN
Lecturers name:1. Ashari bin Kasmin
2. Abd Khalil bin Abd Rahim
3. Muhammad Aimullah bin Abdullah
4. Helmy bin Mustafa El Bakri5. Muhammad bin Zulkipli
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Use different selection methods to select objects in the drawing.
Move objects in the drawing using object snaps, object tracking, andcoordinate entry for precise placement.
Use the Copy command or grips to create new objects from existingobjects in the drawing.
Change the angle of objects in the drawing by using the Rotate commandor with grips.
Create mirrored images of objects in the drawing using the Mirrorcommand or with grips.
Use the Array command to create rectangular and circular patterns ofobjects in the drawing.
Change the size of objects in the drawing.
Use grips to edit objects and display geometric information.
Objectives
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An object or group of objects that you select is alsocalled a selection set. There are a variety of methods forselecting, adding, and removing objects within this
selection set.
If you want to select an individual object, you simply
click it. You can continue to select additional objects as
needed. As each new object is added to the selection
set, the object's appearance changes to dashed lines.
In response to the Select Objects prompt, there are
many methods you can use to select several objects at
the same time.
Select Objects in the Drawing
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Used to reposition an object or group of objects to a newlocation
Command: M
Hint: Select base point either on the original object or on areference point to make the move points easier to locate
Modify Commands: Move
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Used to duplicate an object or group of objects
Command: CP
Hint: Select base point either on the original object or on areference point to make the copy easier to locate
Modify Commands: Copy
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Used to change the orientation of an object or group of objectsby identifying a base point and a rotation angle that completesthe new orientation
Command: RO
Modify Commands: Rotate
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Used to create a mirrored copy of an object or group ofobjects
Command: MI
Mirror line is created by selecting 2 points
Modify Commands: Mirror
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The ARRAY command allows you to arrange multiple copies ofan object or group of objects in a rectangular pattern
Example of a rectangular array using 2 rows, 2 columns, andspacing of 100
Modify Commands: Rectangular Arrays
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The ARRAY command allows you to arrange multiple copies ofan object or group of objects in a circular or polar pattern
Example of a polar array with 4 items, 360 degree angle, androtated objects
Modify Commands: Polar Arrays
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Used to change the overall size of an object Command: SC
Scale of 0.50 is 50% of original size
Scale of 2 is 100% bigger than original size
Modify Commands: Scale
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Used to partially delete an object or group of objects basedon a cutting edge
Command: TR
Modify Commands: Trim
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Used to extend objects to a specified boundary edge
Command: EX
Modify Commands: Extend
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Used for creating one object parallel to another Copies objects at preset distances Use to layout centerlines and for beginning drawings
Command: OF
Modify Commands: Offset
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Used to separate an grouped object back into its individualparts
Used on blocks or cut and paste objects to get them back to theoriginal entity configuration
Command: X
Modify Commands: Explode
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END
OF
LESSON 3