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<a href="#pub-types">Public Types</a> &#124;
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<div class="title">QwtSplineC2 Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Base class for spline interpolations providing a second order parametric continuity ( C2 ) between adjoining curves.
<a href="class_qwt_spline_c2.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="qwt__spline_8h_source.html">qwt_spline.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtSplineC2:</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:aa26bfd4bf07baf03fcf47c8f73f632af"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#aa26bfd4bf07baf03fcf47c8f73f632af">BoundaryConditionC2</a> { <a class="el" href="class_qwt_spline_c2.html#aa26bfd4bf07baf03fcf47c8f73f632afa850dacde625b21daa3ee408df0400119">CubicRunout</a> = LinearRunout + 1
, <a class="el" href="class_qwt_spline_c2.html#aa26bfd4bf07baf03fcf47c8f73f632afa1193d143aa03aa9c874bd9b26f57847b">NotAKnot</a>
}</td></tr>
<tr class="separator:aa26bfd4bf07baf03fcf47c8f73f632af"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_types_class_qwt_spline"><td colspan="2" onclick="javascript:toggleInherit('pub_types_class_qwt_spline')"><img src="closed.png" alt="-"/>&#160;Public Types inherited from <a class="el" href="class_qwt_spline.html">QwtSpline</a></td></tr>
<tr class="memitem:ad82b1f33946d2489511f5e697a32b128 inherit pub_types_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128">BoundaryType</a> { <a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128af5bf38b7f712e69c699458cd6dfef711">ConditionalBoundaries</a>
, <a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128aeec4576967e31745e7d96d3a8a016171">PeriodicPolygon</a>
, <a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128a63108a1fe17778b7d9c236efc17774b1">ClosedPolygon</a>
}</td></tr>
<tr class="separator:ad82b1f33946d2489511f5e697a32b128 inherit pub_types_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a21cca305dad4f1e21437953c4801595a inherit pub_types_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a> { <a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024">AtBeginning</a>
, <a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55">AtEnd</a>
}</td></tr>
<tr class="separator:a21cca305dad4f1e21437953c4801595a inherit pub_types_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af2195032fa62c2b9fe74dc4d44b636cb inherit pub_types_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cb">BoundaryCondition</a> { <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba94d03f64008ad0ed1e2e92bd96414028">Clamped1</a>
, <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba43442b0f55b141b857d6c2ab56cd9afe">Clamped2</a>
, <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba897bc245acbf65ee2f1801c779de15b3">Clamped3</a>
, <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba6ad4241cc59f456d77eb70b289e5782a">LinearRunout</a>
}</td></tr>
<tr class="memdesc:af2195032fa62c2b9fe74dc4d44b636cb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Boundary condition. <a href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cb">More...</a><br /></td></tr>
<tr class="separator:af2195032fa62c2b9fe74dc4d44b636cb inherit pub_types_class_qwt_spline"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a5157941fdf2d1328ba20724804877809"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#a5157941fdf2d1328ba20724804877809">QwtSplineC2</a> ()</td></tr>
<tr class="memdesc:a5157941fdf2d1328ba20724804877809"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="class_qwt_spline_c2.html#a5157941fdf2d1328ba20724804877809">More...</a><br /></td></tr>
<tr class="separator:a5157941fdf2d1328ba20724804877809"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad366da5e045494476e683534b8e28cea"><td class="memItemLeft" align="right" valign="top"><a id="ad366da5e045494476e683534b8e28cea"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#ad366da5e045494476e683534b8e28cea">~QwtSplineC2</a> ()</td></tr>
<tr class="memdesc:ad366da5e045494476e683534b8e28cea"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:ad366da5e045494476e683534b8e28cea"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aff09e99a775253f1c37546f5d3a82428"><td class="memItemLeft" align="right" valign="top">virtual QPainterPath&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#aff09e99a775253f1c37546f5d3a82428">painterPath</a> (const QPolygonF &amp;) const override</td></tr>
<tr class="memdesc:aff09e99a775253f1c37546f5d3a82428"><td class="mdescLeft">&#160;</td><td class="mdescRight">Interpolate a curve with Bezier curves. <a href="class_qwt_spline_c2.html#aff09e99a775253f1c37546f5d3a82428">More...</a><br /></td></tr>
<tr class="separator:aff09e99a775253f1c37546f5d3a82428"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa909f7c297d01a8381d4a58ae6f847be"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="class_q_vector.html">QVector</a>&lt; QLineF &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#aa909f7c297d01a8381d4a58ae6f847be">bezierControlLines</a> (const QPolygonF &amp;) const override</td></tr>
<tr class="memdesc:aa909f7c297d01a8381d4a58ae6f847be"><td class="mdescLeft">&#160;</td><td class="mdescRight">Interpolate a curve with Bezier curves. <a href="class_qwt_spline_c2.html#aa909f7c297d01a8381d4a58ae6f847be">More...</a><br /></td></tr>
<tr class="separator:aa909f7c297d01a8381d4a58ae6f847be"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a02387ad1232ab77881caf710edcc7eca"><td class="memItemLeft" align="right" valign="top">virtual QPolygonF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#a02387ad1232ab77881caf710edcc7eca">equidistantPolygon</a> (const QPolygonF &amp;, double distance, bool withNodes) const override</td></tr>
<tr class="memdesc:a02387ad1232ab77881caf710edcc7eca"><td class="mdescLeft">&#160;</td><td class="mdescRight">Find an interpolated polygon with "equidistant" points. <a href="class_qwt_spline_c2.html#a02387ad1232ab77881caf710edcc7eca">More...</a><br /></td></tr>
<tr class="separator:a02387ad1232ab77881caf710edcc7eca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab7502fe760f6c98b46fe9bd9fc24813b"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="class_q_vector.html">QVector</a>&lt; <a class="el" href="class_qwt_spline_polynomial.html">QwtSplinePolynomial</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#ab7502fe760f6c98b46fe9bd9fc24813b">polynomials</a> (const QPolygonF &amp;) const override</td></tr>
<tr class="memdesc:ab7502fe760f6c98b46fe9bd9fc24813b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate the interpolating polynomials for a non parametric spline. <a href="class_qwt_spline_c2.html#ab7502fe760f6c98b46fe9bd9fc24813b">More...</a><br /></td></tr>
<tr class="separator:ab7502fe760f6c98b46fe9bd9fc24813b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a22d88546b8dff5b3f7efdef656d9f617"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="class_q_vector.html">QVector</a>&lt; double &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#a22d88546b8dff5b3f7efdef656d9f617">slopes</a> (const QPolygonF &amp;) const override</td></tr>
<tr class="memdesc:a22d88546b8dff5b3f7efdef656d9f617"><td class="mdescLeft">&#160;</td><td class="mdescRight">Find the first derivative at the control points. <a href="class_qwt_spline_c2.html#a22d88546b8dff5b3f7efdef656d9f617">More...</a><br /></td></tr>
<tr class="separator:a22d88546b8dff5b3f7efdef656d9f617"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7f1a5aeae77a7cfa955e9062e2fb259b"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="class_q_vector.html">QVector</a>&lt; double &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c2.html#a7f1a5aeae77a7cfa955e9062e2fb259b">curvatures</a> (const QPolygonF &amp;) const =0</td></tr>
<tr class="memdesc:a7f1a5aeae77a7cfa955e9062e2fb259b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Find the second derivative at the control points. <a href="class_qwt_spline_c2.html#a7f1a5aeae77a7cfa955e9062e2fb259b">More...</a><br /></td></tr>
<tr class="separator:a7f1a5aeae77a7cfa955e9062e2fb259b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_qwt_spline_c1"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_spline_c1')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_qwt_spline_c1.html">QwtSplineC1</a></td></tr>
<tr class="memitem:a4924927ec8a3f9dde92692898ccf6cf5 inherit pub_methods_class_qwt_spline_c1"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c1.html#a4924927ec8a3f9dde92692898ccf6cf5">QwtSplineC1</a> ()</td></tr>
<tr class="memdesc:a4924927ec8a3f9dde92692898ccf6cf5 inherit pub_methods_class_qwt_spline_c1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="class_qwt_spline_c1.html#a4924927ec8a3f9dde92692898ccf6cf5">More...</a><br /></td></tr>
<tr class="separator:a4924927ec8a3f9dde92692898ccf6cf5 inherit pub_methods_class_qwt_spline_c1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a33140db5071e38ef20d09de29414a13b inherit pub_methods_class_qwt_spline_c1"><td class="memItemLeft" align="right" valign="top"><a id="a33140db5071e38ef20d09de29414a13b"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c1.html#a33140db5071e38ef20d09de29414a13b">~QwtSplineC1</a> ()</td></tr>
<tr class="memdesc:a33140db5071e38ef20d09de29414a13b inherit pub_methods_class_qwt_spline_c1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a33140db5071e38ef20d09de29414a13b inherit pub_methods_class_qwt_spline_c1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4befa20c7cc5bed3f3f14d52ff639f48 inherit pub_methods_class_qwt_spline_c1"><td class="memItemLeft" align="right" valign="top">virtual double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c1.html#a4befa20c7cc5bed3f3f14d52ff639f48">slopeAtBeginning</a> (const QPolygonF &amp;, double slopeNext) const</td></tr>
<tr class="separator:a4befa20c7cc5bed3f3f14d52ff639f48 inherit pub_methods_class_qwt_spline_c1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9fed720ae4d5d4e6ea6c8e3727587e5e inherit pub_methods_class_qwt_spline_c1"><td class="memItemLeft" align="right" valign="top">virtual double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_c1.html#a9fed720ae4d5d4e6ea6c8e3727587e5e">slopeAtEnd</a> (const QPolygonF &amp;, double slopeBefore) const</td></tr>
<tr class="separator:a9fed720ae4d5d4e6ea6c8e3727587e5e inherit pub_methods_class_qwt_spline_c1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_qwt_spline_g1"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_spline_g1')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_qwt_spline_g1.html">QwtSplineG1</a></td></tr>
<tr class="memitem:aba43f62873a477b2733d4ced610d038d inherit pub_methods_class_qwt_spline_g1"><td class="memItemLeft" align="right" valign="top"><a id="aba43f62873a477b2733d4ced610d038d"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_g1.html#aba43f62873a477b2733d4ced610d038d">QwtSplineG1</a> ()</td></tr>
<tr class="memdesc:aba43f62873a477b2733d4ced610d038d inherit pub_methods_class_qwt_spline_g1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:aba43f62873a477b2733d4ced610d038d inherit pub_methods_class_qwt_spline_g1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a441218078365cb31416fd28501eefa2f inherit pub_methods_class_qwt_spline_g1"><td class="memItemLeft" align="right" valign="top"><a id="a441218078365cb31416fd28501eefa2f"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_g1.html#a441218078365cb31416fd28501eefa2f">~QwtSplineG1</a> ()</td></tr>
<tr class="memdesc:a441218078365cb31416fd28501eefa2f inherit pub_methods_class_qwt_spline_g1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a441218078365cb31416fd28501eefa2f inherit pub_methods_class_qwt_spline_g1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_qwt_spline_interpolating"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_spline_interpolating')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_qwt_spline_interpolating.html">QwtSplineInterpolating</a></td></tr>
<tr class="memitem:a9f8a93111263da26788c4ae9034411d5 inherit pub_methods_class_qwt_spline_interpolating"><td class="memItemLeft" align="right" valign="top"><a id="a9f8a93111263da26788c4ae9034411d5"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_interpolating.html#a9f8a93111263da26788c4ae9034411d5">QwtSplineInterpolating</a> ()</td></tr>
<tr class="memdesc:a9f8a93111263da26788c4ae9034411d5 inherit pub_methods_class_qwt_spline_interpolating"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:a9f8a93111263da26788c4ae9034411d5 inherit pub_methods_class_qwt_spline_interpolating"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1a1e39267da1d9d0f8a1c670777163a4 inherit pub_methods_class_qwt_spline_interpolating"><td class="memItemLeft" align="right" valign="top"><a id="a1a1e39267da1d9d0f8a1c670777163a4"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_interpolating.html#a1a1e39267da1d9d0f8a1c670777163a4">~QwtSplineInterpolating</a> ()</td></tr>
<tr class="memdesc:a1a1e39267da1d9d0f8a1c670777163a4 inherit pub_methods_class_qwt_spline_interpolating"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
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<tr class="memitem:ab7ae76bbd1a085a267cdd54353ece2c2 inherit pub_methods_class_qwt_spline_interpolating"><td class="memItemLeft" align="right" valign="top">virtual QPolygonF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_interpolating.html#ab7ae76bbd1a085a267cdd54353ece2c2">polygon</a> (const QPolygonF &amp;, double tolerance) const override</td></tr>
<tr class="memdesc:ab7ae76bbd1a085a267cdd54353ece2c2 inherit pub_methods_class_qwt_spline_interpolating"><td class="mdescLeft">&#160;</td><td class="mdescRight">Interpolate a curve by a polygon. <a href="class_qwt_spline_interpolating.html#ab7ae76bbd1a085a267cdd54353ece2c2">More...</a><br /></td></tr>
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<tr class="inherit_header pub_methods_class_qwt_spline"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_spline')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_qwt_spline.html">QwtSpline</a></td></tr>
<tr class="memitem:a5d1e0ba35c637a88c66d9e4cbaf36e93 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a5d1e0ba35c637a88c66d9e4cbaf36e93">QwtSpline</a> ()</td></tr>
<tr class="memdesc:a5d1e0ba35c637a88c66d9e4cbaf36e93 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="class_qwt_spline.html#a5d1e0ba35c637a88c66d9e4cbaf36e93">More...</a><br /></td></tr>
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virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a90805882826469c94fdc871f18261bb6">~QwtSpline</a> ()</td></tr>
<tr class="memdesc:a90805882826469c94fdc871f18261bb6 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
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<tr class="memitem:afb4959b1db04dd021b0a49752b66fac3 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#afb4959b1db04dd021b0a49752b66fac3">setParametrization</a> (int type)</td></tr>
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<tr class="memitem:a7d2dd1a36183afc5394ee6b39c09bc8c inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a7d2dd1a36183afc5394ee6b39c09bc8c">setParametrization</a> (<a class="el" href="class_qwt_spline_parametrization.html">QwtSplineParametrization</a> *)</td></tr>
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<tr class="memitem:a6aa6f2c0b844e6a27284aa474c6bca7b inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_spline_parametrization.html">QwtSplineParametrization</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a6aa6f2c0b844e6a27284aa474c6bca7b">parametrization</a> () const</td></tr>
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<tr class="memitem:a48ddb960940cd1bd6d6707dd0ebb8785 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a48ddb960940cd1bd6d6707dd0ebb8785">setBoundaryType</a> (<a class="el" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128">BoundaryType</a>)</td></tr>
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<tr class="memitem:ac14c58e4301b85732c97a4daaf7a9b8b inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#ac14c58e4301b85732c97a4daaf7a9b8b">setBoundaryValue</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>, double value)</td></tr>
<tr class="memdesc:ac14c58e4301b85732c97a4daaf7a9b8b inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Define the boundary value. <a href="class_qwt_spline.html#ac14c58e4301b85732c97a4daaf7a9b8b">More...</a><br /></td></tr>
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<tr class="memitem:a3a51db25eb5f3e4716fe172ae3ca35ec inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a3a51db25eb5f3e4716fe172ae3ca35ec">boundaryValue</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>) const</td></tr>
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<tr class="memitem:a6306d24451d24f16d30880b9114d3052 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a6306d24451d24f16d30880b9114d3052">setBoundaryCondition</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>, int condition)</td></tr>
<tr class="memdesc:a6306d24451d24f16d30880b9114d3052 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Define the condition for an endpoint of the spline. <a href="class_qwt_spline.html#a6306d24451d24f16d30880b9114d3052">More...</a><br /></td></tr>
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<tr class="memitem:a77de5f694c70a7c0b34a02c04093fcee inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a77de5f694c70a7c0b34a02c04093fcee">boundaryCondition</a> (<a class="el" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595a">BoundaryPosition</a>) const</td></tr>
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<tr class="memitem:aa890bace9e318d1bff4fb03ed7d6e9c3 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#aa890bace9e318d1bff4fb03ed7d6e9c3">setBoundaryConditions</a> (int condition, double valueBegin=0.0, double valueEnd=0.0)</td></tr>
<tr class="memdesc:aa890bace9e318d1bff4fb03ed7d6e9c3 inherit pub_methods_class_qwt_spline"><td class="mdescLeft">&#160;</td><td class="mdescRight">Define the condition at the endpoints of a spline. <a href="class_qwt_spline.html#aa890bace9e318d1bff4fb03ed7d6e9c3">More...</a><br /></td></tr>
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<tr class="memitem:a8530fa87bf65a42492014b50614d0595 inherit pub_methods_class_qwt_spline"><td class="memItemLeft" align="right" valign="top">virtual uint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline.html#a8530fa87bf65a42492014b50614d0595">locality</a> () const</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Base class for spline interpolations providing a second order parametric continuity ( C2 ) between adjoining curves. </p>
<p>All interpolations with C2 continuity are based on rules for finding the 2. derivate at some control points.</p>
<p>In case of non parametric splines those points are the curve points, while for parametric splines the calculation is done twice using a parameter value t.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_parametrization.html" title="Curve parametrization used for a spline interpolation.">QwtSplineParametrization</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__spline_8h_source.html#l00267">267</a> of file <a class="el" href="qwt__spline_8h_source.html">qwt_spline.h</a>.</p>
</div><h2 class="groupheader">Member Enumeration Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#aa26bfd4bf07baf03fcf47c8f73f632af">&#9670;&nbsp;</a></span>BoundaryConditionC2</h2>
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<td class="memname">enum <a class="el" href="class_qwt_spline_c2.html#aa26bfd4bf07baf03fcf47c8f73f632af">QwtSplineC2::BoundaryConditionC2</a></td>
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<p>Boundary condition that requires C2 continuity</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline.html#a77de5f694c70a7c0b34a02c04093fcee">QwtSpline::boundaryCondition</a>, <a class="el" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cb" title="Boundary condition.">QwtSpline::BoundaryCondition</a> </dd></dl>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="aa26bfd4bf07baf03fcf47c8f73f632afa850dacde625b21daa3ee408df0400119"></a>CubicRunout&#160;</td><td class="fielddoc"><p>The second derivate at the endpoint is related to the second derivatives at the 2 neighbours: cv[0] := 2.0 * cv[1] - cv[2].</p>
<dl class="section note"><dt>Note</dt><dd><a class="el" href="class_qwt_spline.html#a3a51db25eb5f3e4716fe172ae3ca35ec">boundaryValue()</a> is ignored </dd></dl>
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<tr><td class="fieldname"><a id="aa26bfd4bf07baf03fcf47c8f73f632afa1193d143aa03aa9c874bd9b26f57847b"></a>NotAKnot&#160;</td><td class="fielddoc"><p>The 3rd derivate at the endpoint matches the 3rd derivate at its neighbours. Or in other words: the first/last curve segment extents the polynomial of its neighboured polynomial</p>
<dl class="section note"><dt>Note</dt><dd><a class="el" href="class_qwt_spline.html#a3a51db25eb5f3e4716fe172ae3ca35ec">boundaryValue()</a> is ignored </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__spline_8h_source.html#l00275">275</a> of file <a class="el" href="qwt__spline_8h_source.html">qwt_spline.h</a>.</p>
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<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a5157941fdf2d1328ba20724804877809">&#9670;&nbsp;</a></span>QwtSplineC2()</h2>
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<td class="memname">QwtSplineC2::QwtSplineC2 </td>
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<p>Constructor. </p>
<p>The default setting is a non closing spline with no parametrization ( <a class="el" href="class_qwt_spline_parametrization.html#aa63256420483fa4981452127366cb48da3eaba94a692d4e23a0714db3288a6a24">QwtSplineParametrization::ParameterX</a> ).</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline.html#afb4959b1db04dd021b0a49752b66fac3">QwtSpline::setParametrization()</a>, <a class="el" href="class_qwt_spline.html#a48ddb960940cd1bd6d6707dd0ebb8785">QwtSpline::setBoundaryType()</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__spline_8cpp_source.html#l01228">1228</a> of file <a class="el" href="qwt__spline_8cpp_source.html">qwt_spline.cpp</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#aa909f7c297d01a8381d4a58ae6f847be">&#9670;&nbsp;</a></span>bezierControlLines()</h2>
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<td class="memname"><a class="el" href="class_q_vector.html">QVector</a>&lt; QLineF &gt; QwtSplineC2::bezierControlLines </td>
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<td class="paramtype">const QPolygonF &amp;&#160;</td>
<td class="paramname"><em>points</em></td><td>)</td>
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<p>Interpolate a curve with Bezier curves. </p>
<p>Interpolates a polygon piecewise with cubic Bezier curves and returns the 2 control points of each curve as QLineF.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">points</td><td>Control points </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>Control points of the interpolating Bezier curves</dd></dl>
<dl class="section note"><dt>Note</dt><dd>The implementation simply calls <a class="el" href="class_qwt_spline_c1.html#a95bd3ff76fa0975f07b2351f4194e60e" title="Interpolate a curve with Bezier curves.">QwtSplineC1::bezierControlLines()</a>, but is intended to be replaced by a more efficient implementation that builds the polynomials by the curvatures some day. </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_spline_c1.html#a95bd3ff76fa0975f07b2351f4194e60e">QwtSplineC1</a>.</p>
<p>Reimplemented in <a class="el" href="class_qwt_spline_cubic.html#a7c1a9dac4fa9a10f90bfc968770770dd">QwtSplineCubic</a>.</p>
<p class="definition">Definition at line <a class="el" href="qwt__spline_8cpp_source.html#l01270">1270</a> of file <a class="el" href="qwt__spline_8cpp_source.html">qwt_spline.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7f1a5aeae77a7cfa955e9062e2fb259b">&#9670;&nbsp;</a></span>curvatures()</h2>
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<td class="memname"><a class="el" href="class_q_vector.html">QVector</a>&lt; double &gt; QwtSplineC2::curvatures </td>
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<p>Find the second derivative at the control points. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">points</td><td>Control nodes of the spline </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>Vector with the values of the 2nd derivate at the control points</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_c2.html#a22d88546b8dff5b3f7efdef656d9f617" title="Find the first derivative at the control points.">slopes()</a> </dd></dl>
<dl class="section note"><dt>Note</dt><dd>The x coordinates need to be increasing or decreasing </dd></dl>
<p>Implemented in <a class="el" href="class_qwt_spline_cubic.html#a8320f8745bf375f1433020edcb0e9def">QwtSplineCubic</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a02387ad1232ab77881caf710edcc7eca">&#9670;&nbsp;</a></span>equidistantPolygon()</h2>
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<td class="memname">QPolygonF QwtSplineC2::equidistantPolygon </td>
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<p>Find an interpolated polygon with "equidistant" points. </p>
<p>The implementation is optimzed for non parametric curves ( <a class="el" href="class_qwt_spline_parametrization.html#aa63256420483fa4981452127366cb48da3eaba94a692d4e23a0714db3288a6a24">QwtSplineParametrization::ParameterX</a> ) and falls back to QwtSpline::equidistantPolygon() otherwise.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">points</td><td>Control nodes of the spline </td></tr>
<tr><td class="paramname">distance</td><td>Distance between 2 points according to the parametrization </td></tr>
<tr><td class="paramname">withNodes</td><td>When true, also add the control nodes ( even if not being equidistant )</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Interpolating polygon</dd></dl>
<dl class="section see"><dt>See also</dt><dd>QwtSpline::equidistantPolygon() </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_spline_c1.html#a900ac5247f71ed344a46326c6064ec6b">QwtSplineC1</a>.</p>
<p class="definition">Definition at line <a class="el" href="qwt__spline_8cpp_source.html#l01295">1295</a> of file <a class="el" href="qwt__spline_8cpp_source.html">qwt_spline.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aff09e99a775253f1c37546f5d3a82428">&#9670;&nbsp;</a></span>painterPath()</h2>
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<td class="memname">QPainterPath QwtSplineC2::painterPath </td>
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<td class="paramtype">const QPolygonF &amp;&#160;</td>
<td class="paramname"><em>points</em></td><td>)</td>
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<p>Interpolate a curve with Bezier curves. </p>
<p>Interpolates a polygon piecewise with cubic Bezier curves and returns them as QPainterPath.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">points</td><td>Control points </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Painter path, that can be rendered by QPainter</dd></dl>
<dl class="section note"><dt>Note</dt><dd>The implementation simply calls <a class="el" href="class_qwt_spline_c1.html#a79a63604fbbdc82dc2d39ecc4e32df80" title="Calculate an interpolated painter path.">QwtSplineC1::painterPath()</a>, but is intended to be replaced by a one pass calculation some day. </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_spline_c1.html#a79a63604fbbdc82dc2d39ecc4e32df80">QwtSplineC1</a>.</p>
<p>Reimplemented in <a class="el" href="class_qwt_spline_cubic.html#a57a7f07630c5e101eaee886460b28f24">QwtSplineCubic</a>.</p>
<p class="definition">Definition at line <a class="el" href="qwt__spline_8cpp_source.html#l01249">1249</a> of file <a class="el" href="qwt__spline_8cpp_source.html">qwt_spline.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab7502fe760f6c98b46fe9bd9fc24813b">&#9670;&nbsp;</a></span>polynomials()</h2>
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<td class="memname"><a class="el" href="class_q_vector.html">QVector</a>&lt; <a class="el" href="class_qwt_spline_polynomial.html">QwtSplinePolynomial</a> &gt; QwtSplineC2::polynomials </td>
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<p>Calculate the interpolating polynomials for a non parametric spline. </p>
<p>C2 spline interpolations are based on finding values for the second derivates of f at the control points. The interpolating polynomials can be calculated from the the second derivates using <a class="el" href="class_qwt_spline_polynomial.html#a88432efffb0b03c266f8673e0d58c36e">QwtSplinePolynomial::fromCurvatures</a>.</p>
<p>The default implementation is a 2 pass calculation. In derived classes it might be overloaded by a one pass implementation.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">points</td><td>Control points </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Interpolating polynomials</dd></dl>
<dl class="section note"><dt>Note</dt><dd>The x coordinates need to be increasing or decreasing </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_spline_c1.html#ae5e92c78b70b85393533c752ac3bd543">QwtSplineC1</a>.</p>
<p>Reimplemented in <a class="el" href="class_qwt_spline_cubic.html#afa46c0c18238fde55101ac61b3a99353">QwtSplineCubic</a>.</p>
<p class="definition">Definition at line <a class="el" href="qwt__spline_8cpp_source.html#l01381">1381</a> of file <a class="el" href="qwt__spline_8cpp_source.html">qwt_spline.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a22d88546b8dff5b3f7efdef656d9f617">&#9670;&nbsp;</a></span>slopes()</h2>
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<td class="memname"><a class="el" href="class_q_vector.html">QVector</a>&lt; double &gt; QwtSplineC2::slopes </td>
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<p>Find the first derivative at the control points. </p>
<p>An implementation calculating the 2nd derivatives and then building the slopes in a 2nd loop. <a class="el" href="class_qwt_spline_cubic.html" title="A cubic spline.">QwtSplineCubic</a> overloads it with a more performant implementation doing it in one loop.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">points</td><td>Control nodes of the spline </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Vector with the values of the 1nd derivate at the control points</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_c2.html#a7f1a5aeae77a7cfa955e9062e2fb259b" title="Find the second derivative at the control points.">curvatures()</a></dd></dl>
<dl class="section note"><dt>Note</dt><dd>The x coordinates need to be increasing or decreasing </dd></dl>
<p>Implements <a class="el" href="class_qwt_spline_c1.html#a20caae8d9308f92a49da94315cd46537">QwtSplineC1</a>.</p>
<p>Reimplemented in <a class="el" href="class_qwt_spline_cubic.html#aca2090145ab5ebf20ab38f7b9ae70d16">QwtSplineCubic</a>.</p>
<p class="definition">Definition at line <a class="el" href="qwt__spline_8cpp_source.html#l01339">1339</a> of file <a class="el" href="qwt__spline_8cpp_source.html">qwt_spline.cpp</a>.</p>
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