xtent2D</a></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span>{</div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span>    <span class="keywordtype">size_t</span> m_extent[2];</div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span>  <span class="keyword">public</span>:</div>
<div class="line"><a id="l00014" n