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321 lines
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<div class="title">QwtVectorFieldSample Class Reference</div> </div>
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<p>Sample used in vector fields.
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<a href="class_qwt_vector_field_sample.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="qwt__samples_8h_source.html">qwt_samples.h</a>></code></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a42baed10f078f291bb888c30fdb5340f"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#a42baed10f078f291bb888c30fdb5340f">QwtVectorFieldSample</a> (double <a class="el" href="class_qwt_vector_field_sample.html#ac5fb73df88676e3469f0113db40b8935">x</a>=0.0, double <a class="el" href="class_qwt_vector_field_sample.html#a0e60522aea7d65d8340d691f797ddeb9">y</a>=0.0, double <a class="el" href="class_qwt_vector_field_sample.html#aabefe04201a2d6b1d55228dee122771a">vx</a>=0.0, double <a class="el" href="class_qwt_vector_field_sample.html#af219932e3a663f55b9a3a785f58cf86c">vy</a>=0.0)</td></tr>
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<tr class="memdesc:a42baed10f078f291bb888c30fdb5340f"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="class_qwt_vector_field_sample.html#a42baed10f078f291bb888c30fdb5340f">More...</a><br /></td></tr>
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<tr class="separator:a42baed10f078f291bb888c30fdb5340f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afed31ff0b99fd6baa4cba286ec8a259f"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#afed31ff0b99fd6baa4cba286ec8a259f">QwtVectorFieldSample</a> (const QPointF &<a class="el" href="class_qwt_vector_field_sample.html#a5bb3f6e351f1019b9ea330a0a90c0395">pos</a>, double <a class="el" href="class_qwt_vector_field_sample.html#aabefe04201a2d6b1d55228dee122771a">vx</a>=0.0, double <a class="el" href="class_qwt_vector_field_sample.html#af219932e3a663f55b9a3a785f58cf86c">vy</a>=0.0)</td></tr>
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<tr class="memdesc:afed31ff0b99fd6baa4cba286ec8a259f"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="class_qwt_vector_field_sample.html#afed31ff0b99fd6baa4cba286ec8a259f">More...</a><br /></td></tr>
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<tr class="separator:afed31ff0b99fd6baa4cba286ec8a259f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5bb3f6e351f1019b9ea330a0a90c0395"><td class="memItemLeft" align="right" valign="top">QPointF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#a5bb3f6e351f1019b9ea330a0a90c0395">pos</a> () const</td></tr>
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<tr class="separator:a5bb3f6e351f1019b9ea330a0a90c0395"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8414f5ce56525413f83bb689a1bb1c79"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#a8414f5ce56525413f83bb689a1bb1c79">isNull</a> () const</td></tr>
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<tr class="separator:a8414f5ce56525413f83bb689a1bb1c79"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
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Public Attributes</h2></td></tr>
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<tr class="memitem:ac5fb73df88676e3469f0113db40b8935"><td class="memItemLeft" align="right" valign="top"><a id="ac5fb73df88676e3469f0113db40b8935"></a>
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double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#ac5fb73df88676e3469f0113db40b8935">x</a></td></tr>
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<tr class="memdesc:ac5fb73df88676e3469f0113db40b8935"><td class="mdescLeft"> </td><td class="mdescRight">x coordinate of the position <br /></td></tr>
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<tr class="memitem:a0e60522aea7d65d8340d691f797ddeb9"><td class="memItemLeft" align="right" valign="top"><a id="a0e60522aea7d65d8340d691f797ddeb9"></a>
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double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#a0e60522aea7d65d8340d691f797ddeb9">y</a></td></tr>
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<tr class="memdesc:a0e60522aea7d65d8340d691f797ddeb9"><td class="mdescLeft"> </td><td class="mdescRight">y coordinate of the position <br /></td></tr>
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<tr class="separator:a0e60522aea7d65d8340d691f797ddeb9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aabefe04201a2d6b1d55228dee122771a"><td class="memItemLeft" align="right" valign="top"><a id="aabefe04201a2d6b1d55228dee122771a"></a>
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double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#aabefe04201a2d6b1d55228dee122771a">vx</a></td></tr>
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<tr class="memdesc:aabefe04201a2d6b1d55228dee122771a"><td class="mdescLeft"> </td><td class="mdescRight">x coordinate of the vector <br /></td></tr>
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<tr class="separator:aabefe04201a2d6b1d55228dee122771a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af219932e3a663f55b9a3a785f58cf86c"><td class="memItemLeft" align="right" valign="top"><a id="af219932e3a663f55b9a3a785f58cf86c"></a>
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double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_vector_field_sample.html#af219932e3a663f55b9a3a785f58cf86c">vy</a></td></tr>
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<tr class="memdesc:af219932e3a663f55b9a3a785f58cf86c"><td class="mdescLeft"> </td><td class="mdescRight">y coordinate of the vector <br /></td></tr>
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<tr class="separator:af219932e3a663f55b9a3a785f58cf86c"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Sample used in vector fields. </p>
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<p>A vector field sample is a position and a vector - usually representing some direction and magnitude - attached to this position.</p>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_vector_field_data.html" title="Interface for iterating over an array of vector field samples.">QwtVectorFieldData</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__samples_8h_source.html#l00243">243</a> of file <a class="el" href="qwt__samples_8h_source.html">qwt_samples.h</a>.</p>
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<a id="a42baed10f078f291bb888c30fdb5340f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a42baed10f078f291bb888c30fdb5340f">◆ </a></span>QwtVectorFieldSample() <span class="overload">[1/2]</span></h2>
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<td class="memname">QwtVectorFieldSample::QwtVectorFieldSample </td>
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<td>(</td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>posX</em> = <code>0.0</code>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>posY</em> = <code>0.0</code>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>vectorX</em> = <code>0.0</code>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>vectorY</em> = <code>0.0</code> </td>
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<td></td>
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<td>)</td>
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<p>Constructor. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">posX</td><td>x coordinate of the position </td></tr>
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<tr><td class="paramname">posY</td><td>y coordinate of the position </td></tr>
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<tr><td class="paramname">vectorX</td><td>x coordinate of the vector </td></tr>
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<tr><td class="paramname">vectorY</td><td>y coordinate of the vector </td></tr>
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</table>
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</dd>
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<p class="definition">Definition at line <a class="el" href="qwt__samples_8h_source.html#l00277">277</a> of file <a class="el" href="qwt__samples_8h_source.html">qwt_samples.h</a>.</p>
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<a id="afed31ff0b99fd6baa4cba286ec8a259f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#afed31ff0b99fd6baa4cba286ec8a259f">◆ </a></span>QwtVectorFieldSample() <span class="overload">[2/2]</span></h2>
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<td class="memname">QwtVectorFieldSample::QwtVectorFieldSample </td>
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<td>(</td>
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<td class="paramtype">const QPointF & </td>
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<td class="paramname"><em>pos</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>vectorX</em> = <code>0.0</code>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>vectorY</em> = <code>0.0</code> </td>
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<td></td>
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<td>)</td>
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<p>Constructor. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">pos</td><td>Position </td></tr>
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<tr><td class="paramname">vectorX</td><td>x coordinate of the vector </td></tr>
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<tr><td class="paramname">vectorY</td><td>y coordinate of the vector </td></tr>
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<p class="definition">Definition at line <a class="el" href="qwt__samples_8h_source.html#l00293">293</a> of file <a class="el" href="qwt__samples_8h_source.html">qwt_samples.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<a id="a8414f5ce56525413f83bb689a1bb1c79"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a8414f5ce56525413f83bb689a1bb1c79">◆ </a></span>isNull()</h2>
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<td class="memname">bool QwtVectorFieldSample::isNull </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>true, if vx and vy are 0 </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__samples_8h_source.html#l00309">309</a> of file <a class="el" href="qwt__samples_8h_source.html">qwt_samples.h</a>.</p>
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<a id="a5bb3f6e351f1019b9ea330a0a90c0395"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a5bb3f6e351f1019b9ea330a0a90c0395">◆ </a></span>pos()</h2>
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<td class="memname">QPointF QwtVectorFieldSample::pos </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>x/y coordinates as QPointF </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__samples_8h_source.html#l00303">303</a> of file <a class="el" href="qwt__samples_8h_source.html">qwt_samples.h</a>.</p>
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