/span>bottomLeft<span class="token punctuation">;</span>
    ctx<span class="token punctuation">.</span><span class="token function">fillRect</span><span class="token punctuation">(</span>left<span class="token punctuation">,</span> midY<span class="token punctuation">,</span> midX <span class="token operator">-</span> left<span class="token punctuation">,</span> bottom <span class="token operator">-</span> midY<span class="token punctuation">)</span><span class="token punctuation">;</span>
    ctx<span cla