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Christophe Riccio
2018-05-08 13:51:58 +02:00
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<title>0.9.9 API documenation: GLM_GTX_intersect</title>
<title>0.9.9 API documenation: GLM_GTX_fast_square_root</title>
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<div class="summary">
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">GLM_GTX_intersect<div class="ingroups"><a class="el" href="a00148.html">Experimental extensions</a></div></div> </div>
<div class="title">GLM_GTX_fast_square_root<div class="ingroups"><a class="el" href="a00154.html">Experimental extensions</a></div></div> </div>
</div><!--header-->
<div class="contents">
<p>Include &lt;<a class="el" href="a00042.html" title="GLM_GTX_intersect ">glm/gtx/intersect.hpp</a>&gt; to use the features of this extension.
<p>Include &lt;<a class="el" href="a00031.html" title="GLM_GTX_fast_square_root ">glm/gtx/fast_square_root.hpp</a>&gt; to use the features of this extension.
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga9c68139f3d8a4f3d7fe45f9dbc0de5b7"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga9c68139f3d8a4f3d7fe45f9dbc0de5b7"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga9c68139f3d8a4f3d7fe45f9dbc0de5b7">intersectLineSphere</a> (genType const &amp;point0, genType const &amp;point1, genType const &amp;sphereCenter, typename genType::value_type sphereRadius, genType &amp;intersectionPosition1, genType &amp;intersectionNormal1, genType &amp;intersectionPosition2=genType(), genType &amp;intersectionNormal2=genType())</td></tr>
<tr class="memdesc:ga9c68139f3d8a4f3d7fe45f9dbc0de5b7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute the intersection of a line and a sphere. <a href="a00191.html#ga9c68139f3d8a4f3d7fe45f9dbc0de5b7">More...</a><br /></td></tr>
<tr class="separator:ga9c68139f3d8a4f3d7fe45f9dbc0de5b7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga9d29b9b3acb504d43986502f42740df4"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga9d29b9b3acb504d43986502f42740df4"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga9d29b9b3acb504d43986502f42740df4">intersectLineTriangle</a> (genType const &amp;orig, genType const &amp;dir, genType const &amp;vert0, genType const &amp;vert1, genType const &amp;vert2, genType &amp;position)</td></tr>
<tr class="memdesc:ga9d29b9b3acb504d43986502f42740df4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute the intersection of a line and a triangle. <a href="a00191.html#ga9d29b9b3acb504d43986502f42740df4">More...</a><br /></td></tr>
<tr class="separator:ga9d29b9b3acb504d43986502f42740df4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gad3697a9700ea379739a667ea02573488"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gad3697a9700ea379739a667ea02573488"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#gad3697a9700ea379739a667ea02573488">intersectRayPlane</a> (genType const &amp;orig, genType const &amp;dir, genType const &amp;planeOrig, genType const &amp;planeNormal, typename genType::value_type &amp;intersectionDistance)</td></tr>
<tr class="memdesc:gad3697a9700ea379739a667ea02573488"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute the intersection of a ray and a plane. <a href="a00191.html#gad3697a9700ea379739a667ea02573488">More...</a><br /></td></tr>
<tr class="separator:gad3697a9700ea379739a667ea02573488"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac88f8cd84c4bcb5b947d56acbbcfa56e"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gac88f8cd84c4bcb5b947d56acbbcfa56e"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#gac88f8cd84c4bcb5b947d56acbbcfa56e">intersectRaySphere</a> (genType const &amp;rayStarting, genType const &amp;rayNormalizedDirection, genType const &amp;sphereCenter, typename genType::value_type const sphereRadiusSquered, typename genType::value_type &amp;intersectionDistance)</td></tr>
<tr class="memdesc:gac88f8cd84c4bcb5b947d56acbbcfa56e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute the intersection distance of a ray and a sphere. <a href="a00191.html#gac88f8cd84c4bcb5b947d56acbbcfa56e">More...</a><br /></td></tr>
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<tr class="memitem:gad28c00515b823b579c608aafa1100c1d"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#gad28c00515b823b579c608aafa1100c1d">intersectRaySphere</a> (genType const &amp;rayStarting, genType const &amp;rayNormalizedDirection, genType const &amp;sphereCenter, const typename genType::value_type sphereRadius, genType &amp;intersectionPosition, genType &amp;intersectionNormal)</td></tr>
<tr class="memdesc:gad28c00515b823b579c608aafa1100c1d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute the intersection of a ray and a sphere. <a href="a00191.html#gad28c00515b823b579c608aafa1100c1d">More...</a><br /></td></tr>
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<tr class="memitem:ga62e2b3c67ff9e95c04e39383920a9c27"><td class="memTemplParams" colspan="2">template&lt;typename T , qualifier Q&gt; </td></tr>
<tr class="memitem:ga62e2b3c67ff9e95c04e39383920a9c27"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga62e2b3c67ff9e95c04e39383920a9c27">intersectRayTriangle</a> (vec&lt; 3, T, Q &gt; const &amp;orig, vec&lt; 3, T, Q &gt; const &amp;dir, vec&lt; 3, T, Q &gt; const &amp;v0, vec&lt; 3, T, Q &gt; const &amp;v1, vec&lt; 3, T, Q &gt; const &amp;v2, vec&lt; 3, T, Q &gt; &amp;baryPosition, T &amp;distance)</td></tr>
<tr class="memdesc:ga62e2b3c67ff9e95c04e39383920a9c27"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute the intersection of a ray and a triangle. <a href="a00191.html#ga62e2b3c67ff9e95c04e39383920a9c27">More...</a><br /></td></tr>
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<tr class="memitem:gaac333418d0c4e0cc6d3d219ed606c238"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#gaac333418d0c4e0cc6d3d219ed606c238">fastDistance</a> (genType x, genType y)</td></tr>
<tr class="memdesc:gaac333418d0c4e0cc6d3d219ed606c238"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common distance function but less accurate. <a href="a00191.html#gaac333418d0c4e0cc6d3d219ed606c238">More...</a><br /></td></tr>
<tr class="separator:gaac333418d0c4e0cc6d3d219ed606c238"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga42d3e771fa7cb3c60d828e315829df19"><td class="memTemplParams" colspan="2">template&lt;length_t L, typename T , qualifier Q&gt; </td></tr>
<tr class="memitem:ga42d3e771fa7cb3c60d828e315829df19"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL T&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga42d3e771fa7cb3c60d828e315829df19">fastDistance</a> (vec&lt; L, T, Q &gt; const &amp;x, vec&lt; L, T, Q &gt; const &amp;y)</td></tr>
<tr class="memdesc:ga42d3e771fa7cb3c60d828e315829df19"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common distance function but less accurate. <a href="a00191.html#ga42d3e771fa7cb3c60d828e315829df19">More...</a><br /></td></tr>
<tr class="separator:ga42d3e771fa7cb3c60d828e315829df19"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="memitem:ga7f081b14d9c7035c8714eba5f7f75a8f"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga7f081b14d9c7035c8714eba5f7f75a8f">fastInverseSqrt</a> (genType x)</td></tr>
<tr class="memdesc:ga7f081b14d9c7035c8714eba5f7f75a8f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common inversesqrt function but less accurate. <a href="a00191.html#ga7f081b14d9c7035c8714eba5f7f75a8f">More...</a><br /></td></tr>
<tr class="separator:ga7f081b14d9c7035c8714eba5f7f75a8f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gadcd7be12b1e5ee182141359d4c45dd24"><td class="memTemplParams" colspan="2">template&lt;length_t L, typename T , qualifier Q&gt; </td></tr>
<tr class="memitem:gadcd7be12b1e5ee182141359d4c45dd24"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL vec&lt; L, T, Q &gt;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#gadcd7be12b1e5ee182141359d4c45dd24">fastInverseSqrt</a> (vec&lt; L, T, Q &gt; const &amp;x)</td></tr>
<tr class="memdesc:gadcd7be12b1e5ee182141359d4c45dd24"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common inversesqrt function but less accurate. <a href="a00191.html#gadcd7be12b1e5ee182141359d4c45dd24">More...</a><br /></td></tr>
<tr class="separator:gadcd7be12b1e5ee182141359d4c45dd24"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gafe697d6287719538346bbdf8b1367c59"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gafe697d6287719538346bbdf8b1367c59"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#gafe697d6287719538346bbdf8b1367c59">fastLength</a> (genType x)</td></tr>
<tr class="memdesc:gafe697d6287719538346bbdf8b1367c59"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common length function but less accurate. <a href="a00191.html#gafe697d6287719538346bbdf8b1367c59">More...</a><br /></td></tr>
<tr class="separator:gafe697d6287719538346bbdf8b1367c59"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga90f66be92ef61e705c005e7b3209edb8"><td class="memTemplParams" colspan="2">template&lt;length_t L, typename T , qualifier Q&gt; </td></tr>
<tr class="memitem:ga90f66be92ef61e705c005e7b3209edb8"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL T&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga90f66be92ef61e705c005e7b3209edb8">fastLength</a> (vec&lt; L, T, Q &gt; const &amp;x)</td></tr>
<tr class="memdesc:ga90f66be92ef61e705c005e7b3209edb8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common length function but less accurate. <a href="a00191.html#ga90f66be92ef61e705c005e7b3209edb8">More...</a><br /></td></tr>
<tr class="separator:ga90f66be92ef61e705c005e7b3209edb8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga3b02c1d6e0c754144e2f1e110bf9f16c">fastNormalize</a> (genType const &amp;x)</td></tr>
<tr class="memdesc:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common normalize function but less accurate. <a href="a00191.html#ga3b02c1d6e0c754144e2f1e110bf9f16c">More...</a><br /></td></tr>
<tr class="separator:ga3b02c1d6e0c754144e2f1e110bf9f16c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#ga6c460e9414a50b2fc455c8f64c86cdc9">fastSqrt</a> (genType x)</td></tr>
<tr class="memdesc:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common sqrt function but less accurate. <a href="a00191.html#ga6c460e9414a50b2fc455c8f64c86cdc9">More...</a><br /></td></tr>
<tr class="separator:ga6c460e9414a50b2fc455c8f64c86cdc9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gae83f0c03614f73eae5478c5b6274ee6d"><td class="memTemplParams" colspan="2">template&lt;length_t L, typename T , qualifier Q&gt; </td></tr>
<tr class="memitem:gae83f0c03614f73eae5478c5b6274ee6d"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL vec&lt; L, T, Q &gt;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00191.html#gae83f0c03614f73eae5478c5b6274ee6d">fastSqrt</a> (vec&lt; L, T, Q &gt; const &amp;x)</td></tr>
<tr class="memdesc:gae83f0c03614f73eae5478c5b6274ee6d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Faster than the common sqrt function but less accurate. <a href="a00191.html#gae83f0c03614f73eae5478c5b6274ee6d">More...</a><br /></td></tr>
<tr class="separator:gae83f0c03614f73eae5478c5b6274ee6d"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Include &lt;<a class="el" href="a00042.html" title="GLM_GTX_intersect ">glm/gtx/intersect.hpp</a>&gt; to use the features of this extension. </p>
<p>Add intersection functions </p>
<p>Include &lt;<a class="el" href="a00031.html" title="GLM_GTX_fast_square_root ">glm/gtx/fast_square_root.hpp</a>&gt; to use the features of this extension. </p>
<p>Fast but less accurate implementations of square root based functions.</p><ul>
<li>Sqrt optimisation based on Newton's method, www.gamedev.net/community/forums/topic.asp?topic id=139956 </li>
</ul>
<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">GLM_FUNC_DECL bool glm::intersectLineSphere </td>
<td class="memname">GLM_FUNC_DECL genType glm::fastDistance </td>
<td>(</td>
<td class="paramtype">genType const &amp;&#160;</td>
<td class="paramname"><em>point0</em>, </td>
<td class="paramtype">genType&#160;</td>
<td class="paramname"><em>x</em>, </td>
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<td class="paramtype">genType const &amp;&#160;</td>
<td class="paramname"><em>point1</em>, </td>
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<td class="paramtype">typename genType::value_type&#160;</td>
<td class="paramname"><em>sphereRadius</em>, </td>
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<td class="paramtype">genType &amp;&#160;</td>
<td class="paramname"><em>intersectionPosition1</em>, </td>
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<td class="paramtype">genType &amp;&#160;</td>
<td class="paramname"><em>intersectionNormal1</em>, </td>
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<td class="paramtype">genType &amp;&#160;</td>
<td class="paramname"><em>intersectionPosition2</em> = <code>genType()</code>, </td>
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<td class="paramtype">genType &amp;&#160;</td>
<td class="paramname"><em>intersectionNormal2</em> = <code>genType()</code>&#160;</td>
<td class="paramtype">genType&#160;</td>
<td class="paramname"><em>y</em>&#160;</td>
</tr>
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@@ -176,50 +154,26 @@ Functions</h2></td></tr>
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<p>Compute the intersection of a line and a sphere. </p>
<p>From GLM_GTX_intersect extension </p>
<p>Faster than the common distance function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
</div>
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<td class="memname">GLM_FUNC_DECL bool glm::intersectLineTriangle </td>
<td class="memname">GLM_FUNC_DECL T glm::fastDistance </td>
<td>(</td>
<td class="paramtype">genType const &amp;&#160;</td>
<td class="paramname"><em>orig</em>, </td>
<td class="paramtype">vec&lt; L, T, Q &gt; const &amp;&#160;</td>
<td class="paramname"><em>x</em>, </td>
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<td class="paramtype">genType const &amp;&#160;</td>
<td class="paramname"><em>dir</em>, </td>
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<td class="paramtype">genType const &amp;&#160;</td>
<td class="paramname"><em>vert0</em>, </td>
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<td class="paramtype">genType const &amp;&#160;</td>
<td class="paramname"><em>vert1</em>, </td>
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<td class="paramname"><em>vert2</em>, </td>
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<td class="paramtype">genType &amp;&#160;</td>
<td class="paramname"><em>position</em>&#160;</td>
<td class="paramtype">vec&lt; L, T, Q &gt; const &amp;&#160;</td>
<td class="paramname"><em>y</em>&#160;</td>
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@@ -229,214 +183,141 @@ Functions</h2></td></tr>
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<p>Compute the intersection of a line and a triangle. </p>
<p>From GLM_GTX_intersect extension. </p>
<p>Faster than the common distance function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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<td class="memname">GLM_FUNC_DECL genType glm::fastInverseSqrt </td>
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<p>Compute the intersection of a ray and a plane. </p>
<p>Ray direction and plane normal must be unit length. From GLM_GTX_intersect extension. </p>
<p>Faster than the common inversesqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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<td class="memname">GLM_FUNC_DECL bool glm::intersectRaySphere </td>
<td class="memname">GLM_FUNC_DECL vec&lt;L, T, Q&gt; glm::fastInverseSqrt </td>
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<p>Compute the intersection distance of a ray and a sphere. </p>
<p>The ray direction vector is unit length. From GLM_GTX_intersect extension. </p>
<p>Faster than the common inversesqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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<p>Compute the intersection of a ray and a sphere. </p>
<p>From GLM_GTX_intersect extension. </p>
<p>Faster than the common length function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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<td class="memname">GLM_FUNC_DECL bool glm::intersectRayTriangle </td>
<td class="memname">GLM_FUNC_DECL T glm::fastLength </td>
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<p>Compute the intersection of a ray and a triangle. </p>
<p>Based om Tomas M<>ller implementation <a href="http://fileadmin.cs.lth.se/cs/Personal/Tomas_Akenine-Moller/raytri/">http://fileadmin.cs.lth.se/cs/Personal/Tomas_Akenine-Moller/raytri/</a> From GLM_GTX_intersect extension. </p>
<p>Faster than the common length function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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<p>Faster than the common normalize function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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<p>Faster than the common sqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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<p>Faster than the common sqrt function but less accurate. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00191.html" title="Include <glm/gtx/fast_square_root.hpp> to use the features of this extension. ">GLM_GTX_fast_square_root</a> extension. </dd></dl>
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