hin the immediate children list of this object, or <code>-1</code> if it is not part of the children list.</p></div></div><div class="field "><a name="getMatrix"></a><h3 class="anchor"><code><span class="label label-private">private</span><span class="label label-meta label-meta-dox" title="">@:dox(show)</span><a href="#getMatrix"><span class="identifier">getMatrix</span></a>(<span style="white-space:nowrap">m:<a class="type" title="h2d.col.Matrix - An affine 2D 2x3 matrix." href="../h2d/col/Matrix.html">Ma