</span> <span class="nf">formConstrain</span><span class="p">(</span><span class="nv">sourceRect</span><span class="p">:</span> <span class="k">inout</span> <span class="kt">CGRect</span><span class="p">,</span> <span class="n">by</span> <span class="nv">rect</span><span class="p">:</span> <span class="kt">CGRect</span><span class="p">)</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                    