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CAD tip CAD tip # 6832:

Question CAD 
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Q - question

Change your rectangle to a true rectangle.

A - answer With a single AutoCAD command you can change rectangles drawn with the command RECTANGLE to true rectangles, which also behave like rectangles.

Compare the following two animations - they illustrate the behaviour of two similar objects. The first one is a normal rectangle created using the standard AutoCAD command. The second one is a true rectangle ("rectangle on steroids" if you want), which also behaves like a rectangle during grip-editing and other AutoCAD editing operations.

Standard rectangle (polyline)

True rectangle (constrained polyline)

So how to get a true rectangle from a standard rectangular polyline (pline)? Just a single "magic" command is enough: AUTOCONSTRAIN. With this command you will add automatic geometric constraints to the selected object - and these constraints will be then kept also during editing.

So you can e.g. add a new command for drawing rectangles to your AutoCAD command set (to the ribbon, toolbars, etc.) - use CUI and the following menu macro:

  
^C^C_RECTANGLE;\\_AUTOCONSTRAIN;_L;;  
This new command will directly create the "true" rectangles. Such rectangles will behave like rectangles even in AutoCAD LT 2010 (and higher), which itself cannot create such kind of constrained objects.

You can suppress displaying the constraint bars by setting the CONSTRAINTBARMODE variable to 0.

ACAD2010ADT2010ACADM2010Map2010
100% *  CAD 
31.7.2009    7538x  
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See also:
Tip 11093:Inventor: No preview in Place Constraints (grayed out)
Tip 10769:What is the orange marker on the sketch icon in Fusion 360 model tree?
Tip 10165:Changing the orbit mode inside the 3DORBIT command.
Tip 10039:Two types of equidistants (offsets) to an ellipse.
Tip 9719:Animating constraints in Showcase: AdWorkflowHost is unknown.


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