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+<title>TQCanvasSpline Class</title>
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+<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQCanvasSpline Class Reference<br><small>[<a href="canvas.html">canvas module</a>]</small></h1>
+
+<p>The TQCanvasSpline class provides multi-bezier splines on a TQCanvas.
+<a href="#details">More...</a>
+<p><tt>#include &lt;<a href="qcanvas-h.html">qcanvas.h</a>&gt;</tt>
+<p>Inherits <a href="qcanvaspolygon.html">TQCanvasPolygon</a>.
+<p><a href="qcanvasspline-members.html">List of all member functions.</a>
+<h2>Public Members</h2>
+<ul>
+<li class=fn><a href="#TQCanvasSpline"><b>TQCanvasSpline</b></a> ( TQCanvas&nbsp;*&nbsp;canvas )</li>
+<li class=fn><a href="#~TQCanvasSpline"><b>~TQCanvasSpline</b></a> ()</li>
+<li class=fn>void <a href="#setControlPoints"><b>setControlPoints</b></a> ( TQPointArray&nbsp;ctrl, bool&nbsp;close = TRUE )</li>
+<li class=fn>TQPointArray <a href="#controlPoints"><b>controlPoints</b></a> () const</li>
+<li class=fn>bool <a href="#closed"><b>closed</b></a> () const</li>
+<li class=fn>virtual int <a href="#rtti"><b>rtti</b></a> () const</li>
+</ul>
+<hr><a name="details"></a><h2>Detailed Description</h2>
+
+
+The TQCanvasSpline class provides multi-bezier splines on a <a href="qcanvas.html">TQCanvas</a>.
+
+<p>
+
+
+<p> A TQCanvasSpline is a sequence of 4-point bezier curves joined
+together to make a curved shape.
+<p> You set the control points of the spline with <a href="#setControlPoints">setControlPoints</a>().
+<p> If the bezier is <a href="#closed">closed</a>(), then the first control point will be
+re-used as the last control point. Therefore, a closed bezier must
+have a multiple of 3 control points and an open bezier must have
+one extra point.
+<p> The beziers are not necessarily joined "smoothly". To ensure this,
+set control points appropriately (general reference texts about
+beziers will explain this in detail).
+<p> Like any other canvas item splines can be moved with
+<a href="qcanvasitem.html#move">TQCanvasItem::move</a>() and <a href="qcanvasitem.html#moveBy">TQCanvasItem::moveBy</a>(), or by setting
+coordinates with <a href="qcanvasitem.html#setX">TQCanvasItem::setX</a>(), <a href="qcanvasitem.html#setY">TQCanvasItem::setY</a>() and
+<a href="qcanvasitem.html#setZ">TQCanvasItem::setZ</a>().
+<p> <p>See also <a href="graphics.html">Graphics Classes</a> and <a href="images.html">Image Processing Classes</a>.
+
+<hr><h2>Member Function Documentation</h2>
+<h3 class=fn><a name="TQCanvasSpline"></a>TQCanvasSpline::TQCanvasSpline ( <a href="qcanvas.html">TQCanvas</a>&nbsp;*&nbsp;canvas )
+</h3>
+Create a spline with no control points on the canvas <em>canvas</em>.
+<p> <p>See also <a href="#setControlPoints">setControlPoints</a>().
+
+<h3 class=fn><a name="~TQCanvasSpline"></a>TQCanvasSpline::~TQCanvasSpline ()
+</h3>
+Destroy the spline.
+
+<h3 class=fn>bool <a name="closed"></a>TQCanvasSpline::closed () const
+</h3>
+Returns TRUE if the control points are a closed set; otherwise
+returns FALSE.
+
+<h3 class=fn><a href="qpointarray.html">TQPointArray</a> <a name="controlPoints"></a>TQCanvasSpline::controlPoints () const
+</h3>
+Returns the current set of control points.
+<p> <p>See also <a href="#setControlPoints">setControlPoints</a>() and <a href="#closed">closed</a>().
+
+<h3 class=fn>int <a name="rtti"></a>TQCanvasSpline::rtti () const<tt> [virtual]</tt>
+</h3>
+Returns 8 (TQCanvasItem::Rtti_Spline).
+<p> <p>See also <a href="qcanvasitem.html#rtti">TQCanvasItem::rtti</a>().
+
+<p>Reimplemented from <a href="qcanvaspolygon.html#rtti">TQCanvasPolygon</a>.
+<h3 class=fn>void <a name="setControlPoints"></a>TQCanvasSpline::setControlPoints ( <a href="qpointarray.html">TQPointArray</a>&nbsp;ctrl, bool&nbsp;close = TRUE )
+</h3>
+Set the spline control points to <em>ctrl</em>.
+<p> If <em>close</em> is TRUE, then the first point in <em>ctrl</em> will be
+re-used as the last point, and the number of control points must
+be a multiple of 3. If <em>close</em> is FALSE, one additional control
+point is retquired, and the number of control points must be one of
+(4, 7, 10, 13, ...).
+<p> If the number of control points doesn't meet the above conditions,
+the number of points will be truncated to the largest number of
+points that do meet the retquirement.
+
+<p>Example: <a href="canvas-example.html#x2926">canvas/canvas.cpp</a>.
+<!-- eof -->
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