AutoCAD 2002 Bible

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♦    Undo: Undoes the last arc.


♦    Width: Defines the width of the polyline. AutoCAD asks you for the starting width and the ending width.


♦    Specify endpoint of arc: Specifies the endpoint of the arc. This is the default. AutoCAD creates an arc tangent to the previous arc (continuing in the same direction).


PLINE continues to display the arc submenu until you use the Line suboption or end the command by pressing Enter.


Generating linetypes on polylines


When you create a polyline with a noncontinuous linetype, you may find that the linetype does not appear properly along the polyline. One reason is that the segments of the polyline may be too short to fit the entire linetype definition — in this case the polyline appears continuous even though it is defined with a dashed or other linetype. You can tell AutoCAD to generate the linetype continuously along the polyline instead of starting the linetype definition anew at each vertex. This results in a more normal looking linetype along the polyline. To do this, you need to turn on the PLINEGEN system variable. By default it is off (set at 0). To turn on PLINEGEN, type plinegen J and then 1 J.


As explained in the section “Editing polylines with the PEDIT command» later in the chapter, you can also modify the PLINEGEN system variable for existing polylines.


The drawing used in the following Step-by-Step exercise on drawing polylines, ab16-a.dwg, is in the Drawings folder of the AutoCAD 2002 Bible CD-rOm.

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