6">clear</a></li></ul></div><p><img vspace="5" hspace="5" src="general-arch.png" alt=""> </p><pre class="codeinput"><span class="keyword">classdef</span> PointLayer &lt; Layer
</pre><h2>Properties (Private)<a name="2"></a></h2><p><b><tt>stack</tt></b>: a 2D matrix containing the order of pixel locations clicked. Newer clicks are are the bottom.</p><pre class="codeinput">    properties (Access = private)
        stack
    <span class="keyword">end</span>

    methods (Access = public)
</pre><h2>PointLayer (C