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<h5 class="subsubsection">3.2.6.1 Swept points</h5>

<p><a name="index-swept-point-278"></a><a name="index-point-sweep-279"></a>If <var>swept_object</var> is a point list and there is no closure tag,
<a name="index-_003c_003e_0040r_007b_002c-closure-tag_007d-280"></a><a name="index-closure-tag_002c-_0040code_007b_003c_003e_007d-281"></a>then <code>sweep</code> connects <var>n</var>+1 successive copies of each
point (including the original) with straight line segments to form a
polyline.  If there are m points in the original point list,
<a name="index-point-list-282"></a>then m polylines with <var>n</var> segments each are formed by the
sweep.  In this manner, <code>sweep</code> forms a set of one-dimensional
objects (polylines) from zero-dimensional ones (points).

   <p>When there <em>is</em> a closure tag,
<a name="index-_003c_003e_0040r_007b_002c-closure-tag_007d-283"></a><a name="index-closure-tag_002c-_0040code_007b_003c_003e_007d-284"></a><code>sweep</code> connects <var>n</var>
successive copies of each point (including the original) with straight
line segments and finally connects the last copy back to the original
to form a polygon with <var>n</var> sides.  If there are m points in
the original point list, then m polygons with <var>n</var> sides
each are formed by the sweep.  In this manner, <code>sweep</code> forms a
set of two-dimensional objects (polygons) from zero-dimensional ones
(points).

   <p>Options
<a name="index-options_002c-sweep-285"></a>of the <code>sweep</code> are copied directly to the resulting
polyline(s).

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