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142 lines
6.6 KiB
HTML
142 lines
6.6 KiB
HTML
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<title>point.py</title>
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<div class='docs'><h1>point.py</h1></div>
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<div class="highlight"><pre></pre></div>
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<p>base class for points, used by line and bbox</p>
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<div class="highlight"><pre><span class="k">class</span> <span class="nc">Point</span><span class="p">():</span></pre></div>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">x</span> <span class="o">=</span> <span class="n">x</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">y</span> <span class="o">=</span> <span class="n">y</span></pre></div>
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<p>emulate python's container types</p>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">project</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">proj</span><span class="p">):</span>
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<span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span> <span class="o">=</span> <span class="n">proj</span><span class="o">.</span><span class="n">project</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">)</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">x</span> <span class="o">=</span> <span class="n">x</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">y</span> <span class="o">=</span> <span class="n">y</span></pre></div>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="k">return</span> <span class="mi">2</span></pre></div>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">k</span><span class="p">):</span>
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<span class="n">pt</span> <span class="o">=</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">)</span>
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<span class="k">return</span> <span class="n">pt</span><span class="p">[</span><span class="n">k</span><span class="p">]</span></pre></div>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">__setitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">k</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
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<span class="k">if</span> <span class="n">k</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">x</span> <span class="o">=</span> <span class="n">value</span>
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<span class="k">elif</span> <span class="n">k</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">y</span> <span class="o">=</span> <span class="n">value</span>
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<span class="k">else</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">IndexError</span></pre></div>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">__delitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">):</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s">'deletion not supported'</span><span class="p">)</span>
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