fu">ch_alpha</span>(<span class="st">"displacement_map"</span>),</span>
<span id="cb28-8"><a href="#cb28-8" aria-hidden="true" tabindex="-1"></a>    <span class="at">y_map =</span> <span class="fu">ch_alpha</span>(<span class="st">"displacement_map"</span>), </span>
<span id="cb28-9"><a href="#cb28-9" aria-hidden="true" tabindex="-1"></a>    <span class="at">x_scale =</span> <span class="dv">150</span>,</span>
<span id="cb28-10"><a href="#cb28-10" aria-hidden="true" tabindex="-1"></a>    <span class="at">y_