>hf_noise =</span> <span class="fu">gen_simplex</span>(x, y, <span class="at">frequency =</span> <span class="dv">99</span>, <span class="at">seed =</span> <span class="dv">1234</span>),</span>
<span id="cb16-11"><a href="#cb16-11" aria-hidden="true" tabindex="-1"></a>      <span class="at">paint =</span> lf_noise <span class="sc">+</span> mf_noise <span class="sc">+</span> hf_noise</span>
<span id="cb16-12"><a href="#cb16-12" aria-hidden="true" tabindex="-1"></a>    )</span>
<span id="cb16-13"><a href="#cb