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<h1 class="title">Q3PointArray Class Reference</h1>
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<pre class="cpp"> <span class="preprocessor">#include <Q3PointArray></span></pre><p><b>This class is part of the Qt 3 support library.</b> It is provided to keep old source code working. We strongly advise against using it in new code. See <a href="porting4.html#qpointarray">Porting to Qt 4</a> for more information.</p>
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<h2>Public Functions</h2>
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<table class="alignedsummary">
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#Q3PointArray">Q3PointArray</a></b> ()</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#Q3PointArray-2">Q3PointArray</a></b> ( const QRect & <i>r</i>, bool <i>closed</i> = false )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#Q3PointArray-3">Q3PointArray</a></b> ( const QPolygon & <i>other</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> Q3PointArray </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#copy">copy</a></b> () const</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> Q3PointArray </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#cubicBezier">cubicBezier</a></b> () const</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#isNull">isNull</a></b> ()</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#makeArc">makeArc</a></b> ( int <i>x</i>, int <i>y</i>, int <i>w</i>, int <i>h</i>, int <i>a1</i>, int <i>a2</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#makeArc-2">makeArc</a></b> ( int <i>x</i>, int <i>y</i>, int <i>w</i>, int <i>h</i>, int <i>a1</i>, int <i>a2</i>, const QMatrix & <i>xf</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3pointarray.html#makeEllipse">makeEllipse</a></b> ( int <i>x</i>, int <i>y</i>, int <i>w</i>, int <i>h</i> )</td></tr>
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</table>
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<ul>
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<li class="fn">19 public functions inherited from <a href="qpolygon.html#public-functions">QPolygon</a></li>
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<li class="fn">65 public functions inherited from <a href="qvector.html#public-functions">QVector</a></li>
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</ul>
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<h3>Additional Inherited Members</h3>
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<li class="fn">2 static public members inherited from <a href="qvector.html#static-public-members">QVector</a></li>
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</ul>
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<a name="details"></a>
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<!-- $$$Q3PointArray-description -->
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<div class="descr">
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<h2>Detailed Description</h2>
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<p>The Q3PointArray class provides an array of points.</p>
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<p>Q3PointArray is a <a href="qpolygon.html">QPolygon</a> subclass that provides functions to make it more source compatible with the <tt>QPointArray</tt> class in Qt 3.</p>
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<p>In Qt 4, we recommend that you use <a href="qpainterpath.html">QPainterPath</a> for representing arcs, ellipses, and Bezier curves, rather than <a href="qpolygon.html">QPolygon</a>.</p>
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</div>
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<!-- @@@Q3PointArray -->
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<div class="func">
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<h2>Member Function Documentation</h2>
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<!-- $$$Q3PointArray[overload1]$$$Q3PointArray -->
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<h3 class="fn"><a name="Q3PointArray"></a>Q3PointArray::<span class="name">Q3PointArray</span> ()</h3>
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<p>Constructs an empty <a href="q3pointarray.html" class="compat">Q3PointArray</a>.</p>
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<!-- @@@Q3PointArray -->
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<!-- $$$Q3PointArray$$$Q3PointArrayconstQRect&bool -->
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<h3 class="fn"><a name="Q3PointArray-2"></a>Q3PointArray::<span class="name">Q3PointArray</span> ( const <span class="type"><a href="qrect.html">QRect</a></span> & <i>r</i>, <span class="type">bool</span> <i>closed</i> = false )</h3>
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<p>Constructs a point array from the rectangle <i>r</i>.</p>
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<p>If <i>closed</i> is false, then the point array just contains the following four points of the rectangle ordered clockwise. The bottom-right point is located at (r.x() + r.width(), r.y() + r.height()).</p>
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<!-- @@@Q3PointArray -->
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<!-- $$$Q3PointArray$$$Q3PointArrayconstQPolygon& -->
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<h3 class="fn"><a name="Q3PointArray-3"></a>Q3PointArray::<span class="name">Q3PointArray</span> ( const <span class="type"><a href="qpolygon.html">QPolygon</a></span> & <i>other</i> )</h3>
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<p>Constructs a copy of <i>other</i>.</p>
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<!-- @@@Q3PointArray -->
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<!-- $$$copy[overload1]$$$copy -->
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<h3 class="fn"><a name="copy"></a><span class="type">Q3PointArray</span> Q3PointArray::<span class="name">copy</span> () const</h3>
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<p>Returns a copy of this <a href="q3pointarray.html" class="compat">Q3PointArray</a>.</p>
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<!-- @@@copy -->
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<!-- $$$cubicBezier[overload1]$$$cubicBezier -->
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<h3 class="fn"><a name="cubicBezier"></a><span class="type">Q3PointArray</span> Q3PointArray::<span class="name">cubicBezier</span> () const</h3>
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<p>Returns the Bezier points for the four control points in this array.</p>
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<!-- @@@cubicBezier -->
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<!-- $$$isNull[overload1]$$$isNull -->
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<h3 class="fn"><a name="isNull"></a><span class="type">bool</span> Q3PointArray::<span class="name">isNull</span> ()</h3>
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<p>Returns <a href="qvector.html#isEmpty">isEmpty</a>(). Use <a href="qvector.html#isEmpty">isEmpty</a>() instead.</p>
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<!-- @@@isNull -->
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<!-- $$$makeArc[overload1]$$$makeArcintintintintintint -->
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<h3 class="fn"><a name="makeArc"></a><span class="type">void</span> Q3PointArray::<span class="name">makeArc</span> ( <span class="type">int</span> <i>x</i>, <span class="type">int</span> <i>y</i>, <span class="type">int</span> <i>w</i>, <span class="type">int</span> <i>h</i>, <span class="type">int</span> <i>a1</i>, <span class="type">int</span> <i>a2</i> )</h3>
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<p>Sets the points of the array to those describing an arc of an ellipse with size, width <i>w</i> by height <i>h</i>, and position (<i>x</i>, <i>y</i>), starting from angle <i>a1</i> and spanning by angle <i>a2</i>. The resulting array has sufficient resolution for pixel accuracy (see the overloaded function which takes an additional <a href="qmatrix.html" class="obsolete">QMatrix</a> parameter).</p>
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<p>Angles are specified in 16ths of a degree, i.e. a full circle equals 5760 (16*360). Positive values mean counter-clockwise, whereas negative values mean the clockwise direction. Zero degrees is at the 3 o'clock position.</p>
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<!-- @@@makeArc -->
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<!-- $$$makeArc$$$makeArcintintintintintintconstQMatrix& -->
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<h3 class="fn"><a name="makeArc-2"></a><span class="type">void</span> Q3PointArray::<span class="name">makeArc</span> ( <span class="type">int</span> <i>x</i>, <span class="type">int</span> <i>y</i>, <span class="type">int</span> <i>w</i>, <span class="type">int</span> <i>h</i>, <span class="type">int</span> <i>a1</i>, <span class="type">int</span> <i>a2</i>, const <span class="type"><a href="qmatrix.html">QMatrix</a></span> & <i>xf</i> )</h3>
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<p>This is an overloaded function.</p>
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<p>Sets the points of the array to those describing an arc of an ellipse with width <i>w</i> and height <i>h</i> and position (<i>x</i>, <i>y</i>), starting from angle <i>a1</i>, and spanning angle by <i>a2</i>, and transformed by the matrix <i>xf</i>. The resulting array has sufficient resolution for pixel accuracy.</p>
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<p>Angles are specified in 16ths of a degree, i.e. a full circle equals 5760 (16 * 360). Positive values mean counter-clockwise, whereas negative values mean the clockwise direction. Zero degrees is at the 3 o'clock position.</p>
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<!-- @@@makeArc -->
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<!-- $$$makeEllipse[overload1]$$$makeEllipseintintintint -->
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<h3 class="fn"><a name="makeEllipse"></a><span class="type">void</span> Q3PointArray::<span class="name">makeEllipse</span> ( <span class="type">int</span> <i>x</i>, <span class="type">int</span> <i>y</i>, <span class="type">int</span> <i>w</i>, <span class="type">int</span> <i>h</i> )</h3>
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<p>Sets the points of the array to those describing an ellipse with size, width <i>w</i> by height <i>h</i>, and position (<i>x</i>, <i>y</i>).</p>
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<p>The returned array has sufficient resolution for use as pixels.</p>
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<!-- @@@makeEllipse -->
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