<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>libQGLViewer: CameraConstraint Class Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javaScript" src="search/search.js"></script> <link rel="shortcut icon" href="../images/qglviewer.ico" type="image/x-icon" /> <link rel="icon" href="../images/qglviewer.icon.png" type="image/png" /> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body onload='searchBox.OnSelectItem(0);'> <!-- Generated by Doxygen 1.7.2 --> <script type="text/javascript"><!-- var searchBox = new SearchBox("searchBox", "search",false,'Search'); --></script> <div class="navigation" id="top"> <div class="tabs2"> <ul class="tablist"> <li><a 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<div class="summary"> <a href="#pub-methods">Public Member Functions</a> </div> <div class="headertitle"> <h1>CameraConstraint Class Reference</h1> </div> </div> <div class="contents"> <!-- doxytag: class="qglviewer::CameraConstraint" --><!-- doxytag: inherits="qglviewer::AxisPlaneConstraint" --> <p>An <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html" title="An abstract class for Frame Constraints defined by an axis or a plane.">AxisPlaneConstraint</a> defined in the camera coordinate system. <a href="#_details">More...</a></p> <p><a href="classqglviewer_1_1CameraConstraint-members.html">List of all members.</a></p> <table class="memberdecls"> <tr><td colspan="2"><h2><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classqglviewer_1_1CameraConstraint.html#a38cba0f718402b8cd5ab74d36d7666b4">CameraConstraint</a> (const <a class="el" href="classqglviewer_1_1Camera.html">Camera</a> *const camera)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classqglviewer_1_1CameraConstraint.html#ab8570e4f91974b4bd5441297ab123cdb">~CameraConstraint</a> ()</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classqglviewer_1_1CameraConstraint.html#adc695bfbc605b5631be663b28a4ea9f6">constrainTranslation</a> (<a class="el" href="classqglviewer_1_1Vec.html">Vec</a> &translation, <a class="el" href="classqglviewer_1_1Frame.html">Frame</a> *const frame)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classqglviewer_1_1CameraConstraint.html#a71c099a2c356f715f8bf34052875cd25">constrainRotation</a> (<a class="el" href="classqglviewer_1_1Quaternion.html">Quaternion</a> &rotation, <a class="el" href="classqglviewer_1_1Frame.html">Frame</a> *const frame)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classqglviewer_1_1Camera.html">Camera</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classqglviewer_1_1CameraConstraint.html#af5bc7c79df6e4f2f8290775c4fd8d47c">camera</a> () const </td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <p>An <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html" title="An abstract class for Frame Constraints defined by an axis or a plane.">AxisPlaneConstraint</a> defined in the camera coordinate system. </p> <p>The <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#a431b0d36842122de9db3b4e4f00b8d7c">translationConstraintDirection()</a> and <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#af982989dbeb2e0e63c85eecc09bd88d7">rotationConstraintDirection()</a> are expressed in the associated <a class="el" href="classqglviewer_1_1CameraConstraint.html#af5bc7c79df6e4f2f8290775c4fd8d47c">camera()</a> coordinate system.</p> <p>See the <a href="../examples/constrainedFrame.html">constrainedFrame</a> and <a href="../examples/constrainedCamera.html">constrainedCamera</a> examples for an illustration. </p> <hr/><h2>Constructor & Destructor Documentation</h2> <a class="anchor" id="a38cba0f718402b8cd5ab74d36d7666b4"></a><!-- doxytag: member="qglviewer::CameraConstraint::CameraConstraint" ref="a38cba0f718402b8cd5ab74d36d7666b4" args="(const Camera *const camera)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">CameraConstraint </td> <td>(</td> <td class="paramtype">const <a class="el" href="classqglviewer_1_1Camera.html">Camera</a> *const  </td> <td class="paramname"> <em>camera</em> )</td> <td><code> [explicit]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Creates a CameraConstraint, whose constrained directions are defined in the <code>camera</code> coordinate system. </p> </div> </div> <a class="anchor" id="ab8570e4f91974b4bd5441297ab123cdb"></a><!-- doxytag: member="qglviewer::CameraConstraint::~CameraConstraint" ref="ab8570e4f91974b4bd5441297ab123cdb" args="()" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">virtual ~CameraConstraint </td> <td>(</td> <td class="paramname"> )</td> <td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Virtual destructor. Empty. </p> </div> </div> <hr/><h2>Member Function Documentation</h2> <a class="anchor" id="af5bc7c79df6e4f2f8290775c4fd8d47c"></a><!-- doxytag: member="qglviewer::CameraConstraint::camera" ref="af5bc7c79df6e4f2f8290775c4fd8d47c" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const <a class="el" href="classqglviewer_1_1Camera.html">Camera</a>* camera </td> <td>(</td> <td class="paramname"> )</td> <td> const</td> </tr> </table> </div> <div class="memdoc"> <p>Returns the associated <a class="el" href="classqglviewer_1_1Camera.html" title="A perspective or orthographic camera.">Camera</a>. Set using the CameraConstraint constructor. </p> </div> </div> <a class="anchor" id="a71c099a2c356f715f8bf34052875cd25"></a><!-- doxytag: member="qglviewer::CameraConstraint::constrainRotation" ref="a71c099a2c356f715f8bf34052875cd25" args="(Quaternion &rotation, Frame *const frame)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void constrainRotation </td> <td>(</td> <td class="paramtype"><a class="el" href="classqglviewer_1_1Quaternion.html">Quaternion</a> & </td> <td class="paramname"> <em>rotation</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="classqglviewer_1_1Frame.html">Frame</a> *const  </td> <td class="paramname"> <em>frame</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>When <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#a61a05b9e18948b2b787e355c90b7b85f">rotationConstraintType()</a> is <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#a1d1cfd8ffb84e947f82999c682b666a7a1ad785f7d0b0b3a5a52cdd4385785a6b">AxisPlaneConstraint::AXIS</a>, constrain <code>rotation</code> to be a rotation around an axis whose direction is defined in the <a class="el" href="classqglviewer_1_1CameraConstraint.html#af5bc7c79df6e4f2f8290775c4fd8d47c">camera()</a> coordinate system by <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#af982989dbeb2e0e63c85eecc09bd88d7">rotationConstraintDirection()</a>. </p> <p>Reimplemented from <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#a5de5f38e75b58476b7926171dba4b31b">AxisPlaneConstraint</a>.</p> </div> </div> <a class="anchor" id="adc695bfbc605b5631be663b28a4ea9f6"></a><!-- doxytag: member="qglviewer::CameraConstraint::constrainTranslation" ref="adc695bfbc605b5631be663b28a4ea9f6" args="(Vec &translation, Frame *const frame)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void constrainTranslation </td> <td>(</td> <td class="paramtype"><a class="el" href="classqglviewer_1_1Vec.html">Vec</a> & </td> <td class="paramname"> <em>translation</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="classqglviewer_1_1Frame.html">Frame</a> *const  </td> <td class="paramname"> <em>frame</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Depending on <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#a12ad675910ffa86fbabefff2cd6a594a">translationConstraintType()</a>, constrain <code>translation</code> to be along an axis or limited to a plane defined in the <a class="el" href="classqglviewer_1_1CameraConstraint.html#af5bc7c79df6e4f2f8290775c4fd8d47c">camera()</a> coordinate system by <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#a431b0d36842122de9db3b4e4f00b8d7c">translationConstraintDirection()</a>. </p> <p>Reimplemented from <a class="el" href="classqglviewer_1_1AxisPlaneConstraint.html#ab7d724965c6765209f47c1abe7f7b7b4">AxisPlaneConstraint</a>.</p> </div> </div> </div> <!--- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" 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