# C1.Util.DX.Direct2D.Geometry.Compare

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="C1_Util_DX_Direct2D_Geometry_Compare_" data-uid="C1.Util.DX.Direct2D.Geometry.Compare*">Compare Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Util_DX_Direct2D_Geometry_Compare_" data-uid="C1.Util.DX.Direct2D.Geometry.Compare*"></a>
<h4 id="C1_Util_DX_Direct2D_Geometry_Compare_C1_Util_DX_Direct2D_Geometry_" data-uid="C1.Util.DX.Direct2D.Geometry.Compare(C1.Util.DX.Direct2D.Geometry)">Compare(Geometry)</h4>
<div class="markdown level1 summary"><p>Describes the intersection between this geometry and the specified geometry. The comparison is performed by using the specified flattening tolerance.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public GeometryRelation Compare(Geometry inputGeometry)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function Compare(inputGeometry As Geometry) As GeometryRelation</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.Direct2D.Geometry.html">Geometry</a></td>
      <td><span class="parametername">inputGeometry</span></td>
      <td><p>The geometry to test.</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="C1.Util.DX.Direct2D.GeometryRelation.html">GeometryRelation</a></td>
      <td><p>When this method returns, contains a reference to a value that describes how this geometry is related to inputGeometry. You must allocate storage for this parameter.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 id="C1_Util_DX_Direct2D_Geometry_Compare_C1_Util_DX_Direct2D_Geometry__remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>When interpreting the returned relation value, it is important to remember that the member <span class="xref">C1.Win.DX.Direct2D.GeometryRelation.IsContained</span> of the  D2D1_GEOMETRY_RELATION enumeration type means that this geometry is contained  inside inputGeometry, not that this geometry contains inputGeometry.  For  more information about how to interpret other possible return values, see <span class="xref">C1.Win.DX.Direct2D.GeometryRelation</span>.</p>
</div>


<a id="C1_Util_DX_Direct2D_Geometry_Compare_" data-uid="C1.Util.DX.Direct2D.Geometry.Compare*"></a>
<h4 id="C1_Util_DX_Direct2D_Geometry_Compare_C1_Util_DX_Direct2D_Geometry_System_Single_" data-uid="C1.Util.DX.Direct2D.Geometry.Compare(C1.Util.DX.Direct2D.Geometry,System.Single)">Compare(Geometry, float)</h4>
<div class="markdown level1 summary"><p>Describes the intersection between this geometry and the specified geometry. The comparison is performed by using the specified flattening tolerance.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public GeometryRelation Compare(Geometry inputGeometry, float flatteningTolerance)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function Compare(inputGeometry As Geometry, flatteningTolerance As Single) As GeometryRelation</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.Direct2D.Geometry.html">Geometry</a></td>
      <td><span class="parametername">inputGeometry</span></td>
      <td><p>The geometry to test.</p>
</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><p>The maximum bounds on the distance between points in the polygonal approximation of the geometries. 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="C1.Util.DX.Direct2D.GeometryRelation.html">GeometryRelation</a></td>
      <td><p>When this method returns, contains a reference to a value that describes how this geometry is related to inputGeometry. You must allocate storage for this parameter.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 id="C1_Util_DX_Direct2D_Geometry_Compare_C1_Util_DX_Direct2D_Geometry_System_Single__remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>When interpreting the returned relation value, it is important to remember that the member <span class="xref">C1.Win.DX.Direct2D.GeometryRelation.IsContained</span> of the  D2D1_GEOMETRY_RELATION enumeration type means that this geometry is contained  inside inputGeometry, not that this geometry contains inputGeometry.  For  more information about how to interpret other possible return values, see <span class="xref">C1.Win.DX.Direct2D.GeometryRelation</span>.</p>
</div>


<a id="C1_Util_DX_Direct2D_Geometry_Compare_" data-uid="C1.Util.DX.Direct2D.Geometry.Compare*"></a>
<h4 id="C1_Util_DX_Direct2D_Geometry_Compare_C1_Util_DX_Direct2D_Geometry_System_Nullable_C1_Util_DX_Matrix3x2__System_Single_" data-uid="C1.Util.DX.Direct2D.Geometry.Compare(C1.Util.DX.Direct2D.Geometry,System.Nullable{C1.Util.DX.Matrix3x2},System.Single)">Compare(Geometry, Matrix3x2?, float)</h4>
<div class="markdown level1 summary"><p>HRESULT ID2D1Geometry::CompareWithGeometry([In] ID2D1Geometry* inputGeometry,[In, Optional] const D2D_MATRIX_3X2_F* inputGeometryTransform,[In] float flatteningTolerance,[Out] D2D1_GEOMETRY_RELATION* relation)</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public GeometryRelation Compare(Geometry inputGeometry, Matrix3x2? inputGeometryTransform, float flatteningTolerance)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function Compare(inputGeometry As Geometry, inputGeometryTransform As Matrix3x2?, flatteningTolerance As Single) As GeometryRelation</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.Direct2D.Geometry.html">Geometry</a></td>
      <td><span class="parametername">inputGeometry</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="C1.Util.DX.Matrix3x2.html">Matrix3x2</a>?</td>
      <td><span class="parametername">inputGeometryTransform</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="C1.Util.DX.Direct2D.GeometryRelation.html">GeometryRelation</a></td>
      <td></td>
    </tr>
  </tbody>
</table>
</div>