# C1.Util.DX.Matrix4x4.ConstrainedBillboardRef

## Content

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<h1 id="C1_Util_DX_Matrix4x4_ConstrainedBillboardRef_" data-uid="C1.Util.DX.Matrix4x4.ConstrainedBillboardRef*">ConstrainedBillboardRef Method
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<div class="markdown level0 conceptual"></div>



<a id="C1_Util_DX_Matrix4x4_ConstrainedBillboardRef_" data-uid="C1.Util.DX.Matrix4x4.ConstrainedBillboardRef*"></a>
<h4 id="C1_Util_DX_Matrix4x4_ConstrainedBillboardRef_C1_Util_DX_Matrix4x4__C1_Util_DX_Vector3__C1_Util_DX_Vector3__C1_Util_DX_Vector3__C1_Util_DX_Vector3__C1_Util_DX_Vector3__" data-uid="C1.Util.DX.Matrix4x4.ConstrainedBillboardRef(C1.Util.DX.Matrix4x4@,C1.Util.DX.Vector3@,C1.Util.DX.Vector3@,C1.Util.DX.Vector3@,C1.Util.DX.Vector3@,C1.Util.DX.Vector3@)">ConstrainedBillboardRef(out Matrix4x4, ref Vector3, ref Vector3, ref Vector3, ref Vector3, ref Vector3)</h4>
<div class="markdown level1 summary"><p>Creates a cylindrical billboard that rotates around a specified axis.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public static void ConstrainedBillboardRef(out Matrix4x4 result, ref Vector3 objectPosition, ref Vector3 cameraPosition, ref Vector3 rotateAxis, ref Vector3 cameraForwardVector, ref Vector3 objectForwardVector)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Shared Sub ConstrainedBillboardRef(ByRef result As Matrix4x4, ByRef objectPosition As Vector3, ByRef cameraPosition As Vector3, ByRef rotateAxis As Vector3, ByRef cameraForwardVector As Vector3, ByRef objectForwardVector As Vector3)</code></pre>
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<h5 class="parameters">Parameters</h5>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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      <td><a class="xref" href="C1.Util.DX.Matrix4x4.html">Matrix4x4</a></td>
      <td><span class="parametername">result</span></td>
      <td><p>The billboard matrix.</p>
</td>
    </tr>
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      <td><a class="xref" href="C1.Util.DX.Vector3.html">Vector3</a></td>
      <td><span class="parametername">objectPosition</span></td>
      <td><p>The position of the object that the billboard will rotate around.</p>
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      <td><a class="xref" href="C1.Util.DX.Vector3.html">Vector3</a></td>
      <td><span class="parametername">cameraPosition</span></td>
      <td><p>The position of the camera.</p>
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      <td><a class="xref" href="C1.Util.DX.Vector3.html">Vector3</a></td>
      <td><span class="parametername">rotateAxis</span></td>
      <td><p>The axis to rotate the billboard around.</p>
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    </tr>
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      <td><a class="xref" href="C1.Util.DX.Vector3.html">Vector3</a></td>
      <td><span class="parametername">cameraForwardVector</span></td>
      <td><p>The forward vector of the camera.</p>
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    </tr>
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      <td><a class="xref" href="C1.Util.DX.Vector3.html">Vector3</a></td>
      <td><span class="parametername">objectForwardVector</span></td>
      <td><p>The forward vector of the object.</p>
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