Add perimeter calculation to Geometry class; add built-in perimeters to standard sections; add perimeter highilight to plot_geometry method

Author: robbievanleeuwen

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 Robbie van Leeuwen
+Copyright (c) 2020 Robbie van Leeuwen
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -53,6 +53,7 @@ $ pip install sectionproperties
 ### Cross-Section Analysis:
 - [x] Global axis geometric section properties:
   - [x] Area
+  - [x] Perimeter
   - [x] First moments of area
   - [x] Second moments of area
   - [x] Elastic centroid

README_pypi.rst

@@ -72,6 +72,7 @@ Cross-Section Analysis:
 -  [x] Global axis geometric section properties:
 
    -  [x] Area
+   -  [x] Perimeter
    -  [x] First moments of area
    -  [x] Second moments of area
    -  [x] Elastic centroid

docs/build/doctrees/environment.pickle

@@ -161,7 +161,7 @@ <h1>Source code for sectionproperties.post.post</h1><div class="highlight"><pre>
 
 
 <div class="viewcode-block" id="setup_plot"><a class="viewcode-back" href="../../../rst/api.html#sectionproperties.post.post.setup_plot">[docs]</a><span class="k">def</span> <span class="nf">setup_plot</span><span class="p">(</span><span class="n">ax</span><span class="p">,</span> <span class="n">pause</span><span class="p">):</span>
-    <span class="sd">&quot;&quot;&quot;Exectues code required to set up a matplotlib figure.</span>
+    <span class="sd">&quot;&quot;&quot;Executes code required to set up a matplotlib figure.</span>
 
 <span class="sd">    :param ax: Axes object on which to plot</span>
 <span class="sd">    :type ax: :class:`matplotlib.axes.Axes`</span>
@@ -171,6 +171,7 @@ <h1>Source code for sectionproperties.post.post</h1><div class="highlight"><pre>
 
     <span class="k">if</span> <span class="ow">not</span> <span class="n">pause</span><span class="p">:</span>
         <span class="n">plt</span><span class="o">.</span><span class="n">ion</span><span class="p">()</span>
+        <span class="n">plt</span><span class="o">.</span><span class="n">tight_layout</span><span class="p">()</span>
         <span class="n">plt</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
     <span class="k">else</span><span class="p">:</span>
         <span class="n">plt</span><span class="o">.</span><span class="n">ioff</span><span class="p">()</span></div>
@@ -190,6 +191,7 @@ <h1>Source code for sectionproperties.post.post</h1><div class="highlight"><pre>
     <span class="n">ax</span><span class="o">.</span><span class="n">set_aspect</span><span class="p">(</span><span class="s1">&#39;equal&#39;</span><span class="p">,</span> <span class="n">anchor</span><span class="o">=</span><span class="s1">&#39;C&#39;</span><span class="p">)</span>
 
     <span class="k">if</span> <span class="n">pause</span><span class="p">:</span>
+        <span class="n">plt</span><span class="o">.</span><span class="n">tight_layout</span><span class="p">()</span>
         <span class="n">plt</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
     <span class="k">else</span><span class="p">:</span>
         <span class="n">plt</span><span class="o">.</span><span class="n">draw</span><span class="p">()</span>
@@ -286,6 +288,10 @@ <h1>Source code for sectionproperties.post.post</h1><div class="highlight"><pre>
         <span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Section Properties:&quot;</span><span class="p">)</span>
         <span class="nb">print</span><span class="p">(</span><span class="s2">&quot;A</span><span class="se">\t</span><span class="s2"> = {:&gt;</span><span class="si">{fmt}</span><span class="s2">}&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">area</span><span class="p">,</span> <span class="n">fmt</span><span class="o">=</span><span class="n">fmt</span><span class="p">))</span>
 
+    <span class="n">perimeter</span> <span class="o">=</span> <span class="n">cross_section</span><span class="o">.</span><span class="n">get_perimeter</span><span class="p">()</span>
+    <span class="k">if</span> <span class="n">perimeter</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+        <span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Perimeter</span><span class="se">\t</span><span class="s2"> = {:&gt;</span><span class="si">{fmt}</span><span class="s2">}&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">perimeter</span><span class="p">,</span> <span class="n">fmt</span><span class="o">=</span><span class="n">fmt</span><span class="p">))</span>
+
     <span class="k">if</span> <span class="n">cross_section</span><span class="o">.</span><span class="n">materials</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
         <span class="n">ea</span> <span class="o">=</span> <span class="n">cross_section</span><span class="o">.</span><span class="n">get_ea</span><span class="p">()</span>
         <span class="k">if</span> <span class="n">ea</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>