# C1.Util.DX.Direct2D.Geometry.ComputeLength

## Content

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<h1 id="C1_Util_DX_Direct2D_Geometry_ComputeLength_" data-uid="C1.Util.DX.Direct2D.Geometry.ComputeLength*">ComputeLength Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Util_DX_Direct2D_Geometry_ComputeLength_" data-uid="C1.Util.DX.Direct2D.Geometry.ComputeLength*"></a>
<h4 id="C1_Util_DX_Direct2D_Geometry_ComputeLength" data-uid="C1.Util.DX.Direct2D.Geometry.ComputeLength">ComputeLength()</h4>
<div class="markdown level1 summary"><p>Calculates the length of the geometry as though each segment were unrolled into a line.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public float ComputeLength()</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function ComputeLength() As Single</code></pre>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.single">float</a></td>
      <td><p>When this method returns, contains a reference to the length of the geometry. For closed geometries, the length includes an implicit closing segment. You must allocate storage for this parameter.</p>
</td>
    </tr>
  </tbody>
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<a id="C1_Util_DX_Direct2D_Geometry_ComputeLength_" data-uid="C1.Util.DX.Direct2D.Geometry.ComputeLength*"></a>
<h4 id="C1_Util_DX_Direct2D_Geometry_ComputeLength_System_Single_" data-uid="C1.Util.DX.Direct2D.Geometry.ComputeLength(System.Single)">ComputeLength(float)</h4>
<div class="markdown level1 summary"><p>Calculates the length of the geometry as though each segment were unrolled into a line.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public float ComputeLength(float flatteningTolerance)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function ComputeLength(flatteningTolerance As Single) As Single</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.single">float</a></td>
      <td><span class="parametername">flatteningTolerance</span></td>
      <td><p>The maximum bounds on the distance between points in the polygonal approximation of the geometry. Smaller values produce more accurate results but cause slower execution.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.single">float</a></td>
      <td><p>When this method returns, contains a reference to the length of the geometry. For closed geometries, the length includes an implicit closing segment. You must allocate storage for this parameter.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="C1_Util_DX_Direct2D_Geometry_ComputeLength_" data-uid="C1.Util.DX.Direct2D.Geometry.ComputeLength*"></a>
<h4 id="C1_Util_DX_Direct2D_Geometry_ComputeLength_System_Nullable_C1_Util_DX_Matrix3x2__System_Single_" data-uid="C1.Util.DX.Direct2D.Geometry.ComputeLength(System.Nullable{C1.Util.DX.Matrix3x2},System.Single)">ComputeLength(Matrix3x2?, float)</h4>
<div class="markdown level1 summary"><p>HRESULT ID2D1Geometry::ComputeLength([In, Optional] const D2D_MATRIX_3X2_F* worldTransform,[In] float flatteningTolerance,[Out] float* length)</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public float ComputeLength(Matrix3x2? worldTransform, float flatteningTolerance)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function ComputeLength(worldTransform As Matrix3x2?, flatteningTolerance As Single) As Single</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.Util.DX.Matrix3x2.html">Matrix3x2</a>?</td>
      <td><span class="parametername">worldTransform</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.single">float</a></td>
      <td><span class="parametername">flatteningTolerance</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.single">float</a></td>
      <td></td>
    </tr>
  </tbody>
</table>
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