{ (define LIBNAME "A Geometry Library (HtDC)")
  (include "head.tinc") }

<p>Add 
<pre><code>
  import geometry.*
</code></pre>
at the top of your Definitions Window to import this library. 
</p>

<p>This <code>geometry</code> package provides a class for representing
positions in a Cartesian world:
<pre>
<code>
                      +----------+
                      | Posn     |
                      +----------+
                      | int x    |
                      | int y    |
                      +----------+
</code>
</pre>
</p>

<p>To create an instance of the <code>Posn</code> class, a program must supply
two <code>int</code> values: one for its x coordinate of the canvas and the
second for its y coordinate. </p>

{(include "foot.tinc")}