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Node: <a name="Polygons">Polygons</a>,
Next: <a rel="next" accesskey="n" href="Text.html#Text">Text</a>,
Previous: <a rel="previous" accesskey="p" href="Arcs.html#Arcs">Arcs</a>,
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<h3 class="subsection">Polygons and Rectangles</h4>
<p>A polygon is drawn by defining all of its segments as a series of
consecutive line segments. If the first point matches a new one and if
the number of points is greater than two, then the polygon is closed.
Since matching up with the first point may be difficult, you may use
<em>Shift<Key>p</em> to close the polygon. The <em>Shift<Key>p</em> won't
work if clipping to 45 degree lines is selected
and the final segment cannot match this condition.
I suggest you create simple convex polygons in order to avoid a strong
negative impact on the performance of the connection scanning routines.
The <em>rectangle-mode</em> is just an easy way to generate rectangular polygons.
<em>Polygon-mode</em> also is selected by <em><Key>F6</em> whereas
<em>rectangle-mode</em> uses <em><Key>F4</em>.
Pressing a <em><Btn1></em> at two locations creates a rectangle by
defining two of its corners.
<em><Key>Insert</em> brings you to <em>insert-point-mode</em> which lets you
add additional points to an already existing polygon.
Single points may be removed by moving the cross hair to them and selecting
one of the delete actions <em>(remove-mode, BackSpace, or Delete</em>. This only works
if the remaining polygon will still have three or more corners.
Pressing <em><Key>u</em> or <em><Key>p</em> while entering a new polygon
brings you back to the previous corner. Removing a point does not
force clipping to 45 degree angles (because it's not generally possible).
Newly created polygons will not connect to pins or vias
that pierce it unless you create a thermal (using the thermal mode) to make
the connection. If the edge of a polygon gets too close to a pin or via that
lies outside of it, a warning will be issued and the pin will be given a
special color. Increasing the distance between them will remove the warning
color.
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