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<section id="dynamic-control-py-graphical-control-for-parameters">
<h1>02-dynamic-control.py - Graphical control for parameters.<a class="headerlink" href="#dynamic-control-py-graphical-control-for-parameters" title="Permalink to this heading">¶</a></h1>
<p>With pyo, it’s easy to quickly try some parameter combination
with the controller window already configured for each object.
To open the controller window, just call the ctrl() method on
the object you want to control.</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <a class="sphinx-codeautolink-a" href="../../api/alphabetical.html#module-pyo" title="pyo"><span class="nn">pyo</span></a> <span class="kn">import</span> <span class="o">*</span>

<span class="n">s</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/server.html#pyo.Server" title="pyo.lib.server.Server"><span class="n">Server</span></a><span class="p">()</span><span class="o">.</span><span class="n">boot</span><span class="p">()</span>
<span class="n">s</span><span class="o">.</span><span class="n">amp</span> <span class="o">=</span> <span class="mf">0.1</span>

<span class="c1"># Creates two objects with cool parameters, one per channel.</span>
<span class="n">a</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.FM" title="pyo.lib.generators.FM"><span class="n">FM</span></a><span class="p">()</span><span class="o">.</span><span class="n">out</span><span class="p">()</span>
<span class="n">b</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.FM" title="pyo.lib.generators.FM"><span class="n">FM</span></a><span class="p">()</span><span class="o">.</span><span class="n">out</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>

<span class="c1"># Opens the controller windows.</span>
<span class="n">a</span><span class="o">.</span><span class="n">ctrl</span><span class="p">(</span><span class="n">title</span><span class="o">=</span><span class="s2">"Frequency modulation left channel"</span><span class="p">)</span>
<span class="n">b</span><span class="o">.</span><span class="n">ctrl</span><span class="p">(</span><span class="n">title</span><span class="o">=</span><span class="s2">"Frequency modulation right channel"</span><span class="p">)</span>

<span class="c1"># If a list of values is given at a particular argument, the ctrl</span>
<span class="c1"># window will show a multislider to set each value separately.</span>

<span class="n">oscs</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Sine" title="pyo.lib.generators.Sine"><span class="n">Sine</span></a><span class="p">([</span><span class="mi">100</span><span class="p">,</span> <span class="mi">200</span><span class="p">,</span> <span class="mi">300</span><span class="p">,</span> <span class="mi">400</span><span class="p">,</span> <span class="mi">500</span><span class="p">,</span> <span class="mi">600</span><span class="p">,</span> <span class="mi">700</span><span class="p">,</span> <span class="mi">800</span><span class="p">],</span> <span class="n">mul</span><span class="o">=</span><span class="mf">0.1</span><span class="p">)</span><span class="o">.</span><span class="n">out</span><span class="p">()</span>
<span class="n">oscs</span><span class="o">.</span><span class="n">ctrl</span><span class="p">(</span><span class="n">title</span><span class="o">=</span><span class="s2">"Simple additive synthesis"</span><span class="p">)</span>

<span class="n">s</span><span class="o">.</span><span class="n">gui</span><span class="p">(</span><span class="nb">locals</span><span class="p">())</span>
</pre></div>
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