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Functions</h2></td></tr>
<tr class="memitem:aceaac4969247e38262453f82aca8bedf"><td class="memTemplParams" colspan="2">template&lt;typename Coordinate , typename Field &gt; </td></tr>
<tr class="memitem:aceaac4969247e38262453f82aca8bedf"><td class="memTemplItemLeft" align="right" valign="top">Coordinate&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00107.html#aceaac4969247e38262453f82aca8bedf">corner</a> (unsigned c)</td></tr>
<tr class="separator:aceaac4969247e38262453f82aca8bedf"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6862697106891aa590435d076e949702"><td class="memItemLeft" align="right" valign="top">std::pair&lt; unsigned, unsigned &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00107.html#a6862697106891aa590435d076e949702">edgeToCorners</a> (unsigned edge)</td></tr>
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<tr class="memitem:a6cad77ef0322dd2d36743bee614e74e6"><td class="memTemplParams" colspan="2">template&lt;typename Coordinate , typename Corners &gt; </td></tr>
<tr class="memitem:a6cad77ef0322dd2d36743bee614e74e6"><td class="memTemplItemLeft" align="right" valign="top">Corners::value_type&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00107.html#a6cad77ef0322dd2d36743bee614e74e6">interpolate</a> (const Coordinate &amp;x, const Corners &amp;corners)</td></tr>
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<tr class="memitem:ad16a87230471ed2c5af0980dfa1668f0"><td class="memTemplParams" colspan="2">template&lt;typename Coordinate , typename Normals &gt; </td></tr>
<tr class="memitem:ad16a87230471ed2c5af0980dfa1668f0"><td class="memTemplItemLeft" align="right" valign="top">Normals::value_type&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00107.html#ad16a87230471ed2c5af0980dfa1668f0">interpolate_unit_normals</a> (const Coordinate &amp;x, const Normals &amp;normals)</td></tr>
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<tr class="memitem:a870cd1d1b2cb9d977ceab3032db9dca6"><td class="memTemplItemLeft" align="right" valign="top">bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00107.html#a870cd1d1b2cb9d977ceab3032db9dca6">inside</a> (const Coordinate &amp;x, const Field &amp;epsilon)</td></tr>
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<h2 class="groupheader">Function Documentation</h2>
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template&lt;typename Coordinate , typename Field &gt; </div>
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          <td class="memname">Coordinate Dune::GridGlue::ProjectionImplementation::corner </td>
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<p>Return corner coordinates of a simplex.</p>
<p>Given the number <code>c</code> of a corner, this function returns the coordinate of the <code>c</code>th corner of the standard simplex with the same dimension as <code>Coordinate</code>.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">c</td><td>corner number </td></tr>
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  </dd>
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<dl class="section return"><dt>Returns</dt><dd>coordinate of <code>c</code>th corner of the standard simplex </dd></dl>

<p>Referenced by <a class="el" href="a00010.html#a7c9f996e92d0c0874c04b4fda3464aea">Dune::GridGlue::ConformingMerge&lt; dim, dimworld, T &gt;::ConformingMerge()</a>, <a class="el" href="a00063.html#a673c9012160a2b6330099acfa8771c75">Dune::GridGlue::StandardMerge&lt; T, dim1, dim2, dimworld &gt;::enableBruteForce()</a>, and <a class="el" href="a00063.html#afb62b35e1623927b1be7d834a78405b9">Dune::GridGlue::StandardMerge&lt; T, grid1Dim, grid2Dim, dimworld &gt;::nSimplices()</a>.</p>

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          <td class="memname">std::pair&lt;unsigned, unsigned&gt; Dune::GridGlue::ProjectionImplementation::edgeToCorners </td>
          <td>(</td>
          <td class="paramtype">unsigned&#160;</td>
          <td class="paramname"><em>edge</em></td><td>)</td>
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<p>Translate edge to corner numbers.</p>
<p>Given the number <code>edge</code> of an edge of a triangle, this function returns the number of the corners belonging to it.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">edge</td><td>edge number of a triangle </td></tr>
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  </dd>
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<dl class="section return"><dt>Returns</dt><dd>numbers of corners of the edge </dd></dl>

<p>Referenced by <a class="el" href="a00043.html#a4f1e3bfbc87fcad521b8bdb2890b64f0">Dune::GridGlue::Projection&lt; Coordinate &gt;::epsilon()</a>.</p>

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          <td>(</td>
          <td class="paramtype">const Coordinate &amp;&#160;</td>
          <td class="paramname"><em>x</em>, </td>
        </tr>
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<p>Check if the point <code>x</code> is inside the standard simplex.</p>
<p>This functions checks if the point <code>x</code> is in the inside (or on the boundary) of the standard simplex, that is <code>xᵢ ≥ 0</code> and <code>∑ xᵢ ≤ 1</code>.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">x</td><td>coordinates of point to check </td></tr>
    <tr><td class="paramname">epsilon</td><td>tolerance used for floating-point comparisions </td></tr>
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  </dd>
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<dl class="section return"><dt>Returns</dt><dd><code>true</code> if <code>x</code> is inside, <code>false</code> otherwise </dd></dl>

<p>References <a class="el" href="a00043.html#a0f443c28663148f72a8671a2ef9d096e">Dune::GridGlue::Projection&lt; Coordinate &gt;::Projection()</a>.</p>

<p>Referenced by <a class="el" href="a00043.html#a4f1e3bfbc87fcad521b8bdb2890b64f0">Dune::GridGlue::Projection&lt; Coordinate &gt;::epsilon()</a>.</p>

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          <td class="memname">Corners::value_type Dune::GridGlue::ProjectionImplementation::interpolate </td>
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          <td class="paramtype">const Coordinate &amp;&#160;</td>
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<p>Convert barycentric coordinates to euclidian coordinates.</p>
<p>This function converts barycentric coordinates <code>x</code> with respect to the triangle with corners <code>corners</code> to euclidian coordinates. For the result <code>y</code> the following equation holds: <code>yᵢ = (cornersᵢ₊₁ - corners₀) xᵢ</code></p>
<p>Note that this can also be for linear interpolation of normals given on the corners, but this does not preserve the norm (e.g. for unit normals).</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">x</td><td>barycentric coordinates </td></tr>
    <tr><td class="paramname">corners</td><td>coordinates or normals at the corners </td></tr>
  </table>
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<dl class="section return"><dt>Returns</dt><dd>euclidian coordinates or interpolated normal </dd></dl>

<p>Referenced by <a class="el" href="a00043.html#a4f1e3bfbc87fcad521b8bdb2890b64f0">Dune::GridGlue::Projection&lt; Coordinate &gt;::epsilon()</a>, <a class="el" href="a00107.html#ad16a87230471ed2c5af0980dfa1668f0">interpolate_unit_normals()</a>, <a class="el" href="a00108.html#a84bdedfab7dc7e7f9ed2f0ea09499414">Dune::GridGlue::ProjectionWriterImplementation::write_edge_intersection_points()</a>, and <a class="el" href="a00108.html#a20f7b27dad92956efe88514a4a3970ad">Dune::GridGlue::ProjectionWriterImplementation::write_points()</a>.</p>

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          <td class="paramtype">const Coordinate &amp;&#160;</td>
          <td class="paramname"><em>x</em>, </td>
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          <td class="paramname"><em>normals</em>&#160;</td>
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<p>Interpolate between unit normals on corners of a simplex.</p>
<p>This functions interpolates between unit normals given on corners of a simplex using linear interpolation.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">x</td><td>barycentric coordinates </td></tr>
    <tr><td class="paramname">normals</td><td>unit normals at corners </td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>unit normal at <code>x</code>  <a class="el" href="a00107.html#a6cad77ef0322dd2d36743bee614e74e6">interpolate(const Coordinate&amp;, const Corners&amp;)</a> </dd></dl>

<p>References <a class="el" href="a00107.html#a6cad77ef0322dd2d36743bee614e74e6">interpolate()</a>.</p>

<p>Referenced by <a class="el" href="a00043.html#a4f1e3bfbc87fcad521b8bdb2890b64f0">Dune::GridGlue::Projection&lt; Coordinate &gt;::epsilon()</a>, <a class="el" href="a00108.html#acba14119e369d32663687241e6abcca5">Dune::GridGlue::ProjectionWriterImplementation::write_edge_intersection_normals()</a>, and <a class="el" href="a00108.html#a127c7fdc1ce8ef1da9e80e5e4dc6189d">Dune::GridGlue::ProjectionWriterImplementation::write_normals()</a>.</p>

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