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<li class="toctree-l3 current"><a class="current reference internal" href="#">Scratches node</a><ul>
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<div class="section" id="scratches-node">
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<h1>Scratches node<a class="headerlink" href="#scratches-node" title="Permalink to this headline">¶</a></h1>
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<p>The <strong>Scratches</strong> node outputs a fibers pattern, that can be used for
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scratches on any material or messy fibers.</p>
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<p>It is inspired from a the <em>Fuzzy scratches</em> shadertoy from
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Daedalus (<a class="reference external" href="https://www.shadertoy.com/view/4syXRD">https://www.shadertoy.com/view/4syXRD</a>).</p>
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<img alt="_images/node_scratches.png" src="_images/node_scratches.png" />
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<div class="section" id="inputs">
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<h2>Inputs<a class="headerlink" href="#inputs" title="Permalink to this headline">¶</a></h2>
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<p>The <strong>Scratches</strong> node does not accept any input.</p>
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<div class="section" id="outputs">
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<h2>Outputs<a class="headerlink" href="#outputs" title="Permalink to this headline">¶</a></h2>
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<p>The <strong>Scratches</strong> node generates a single greyscale output texture.</p>
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<div class="section" id="parameters">
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<h2>Parameters<a class="headerlink" href="#parameters" title="Permalink to this headline">¶</a></h2>
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<p>The <strong>Scratches</strong> node accepts the following parameters:</p>
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<ul class="simple">
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<li><p>the <em>Length</em> parameter defines the length of a fiber in the output texture. The number of
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scratches grows exponentially with the inverse of this length.</p></li>
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<li><p>the <em>Width</em> parameter defines the width of each fiber.</p></li>
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<li><p><em>Layers</em> is the number of layers of the effect. The number of scratches grows
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linearly with the number of layers.</p></li>
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<li><p><em>Waviness</em> can be tweaked to draw straight or curved scratches.</p></li>
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<li><p><em>Angle</em> is the average angle of the scratches.</p></li>
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<li><p><em>Randomness</em> is applied to the scratches angles.</p></li>
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</ul>
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</div>
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<div class="section" id="example-images">
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<h2>Example images<a class="headerlink" href="#example-images" title="Permalink to this headline">¶</a></h2>
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<img alt="_images/node_scratches_samples.png" class="align-center" src="_images/node_scratches_samples.png" />
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