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<body lang="en">
<a name="Swept-points"></a>
<div class="header">
<p>
Next: <a href="Swept-lines.html#Swept-lines" accesskey="n" rel="next">Swept lines</a>, Previous: <a href="Sweeps.html#Sweeps" accesskey="p" rel="prev">Sweeps</a>, Up: <a href="Sweeps.html#Sweeps" accesskey="u" rel="up">Sweeps</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index-of-syntax.html#Index-of-syntax" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Swept-points-1"></a>
<h4 class="subsubsection">3.2.6.1 Swept points</h4>
<a name="index-swept-point-1"></a>
<a name="index-point-sweep-1"></a>
<p>If <var>swept_object</var> is a point list and there is no closure tag,
<a name="index-_003c_003e_002c-closure-tag-3"></a>
<a name="index-closure-tag_002c-_003c_003e-3"></a>
then <code>sweep</code> connects <em><var>n</var>+1</em> successive copies of each
point (including the original) with straight line segments to form a
polyline.  If there are <em>m</em> points in the original point list,
<a name="index-point-list"></a>
then <em>m</em> 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>
<p>When there <em>is</em> a closure tag, 
<a name="index-_003c_003e_002c-closure-tag-4"></a>
<a name="index-closure-tag_002c-_003c_003e-4"></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 <em>m</em> points in
the original point list, then <em>m</em> 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>
<p>Options 
<a name="index-options_002c-sweep-2"></a>
of the <code>sweep</code> are copied directly to the resulting
polyline(s).
</p>



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