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<a name="QMathGL-class"></a>
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<a name="QMathGL-class-1"></a>
<h2 class="section">5.3 QMathGL class</h2>
<a name="index-QMathGL-1"></a>
<a name="index-widgets-3"></a>
<p>Class is Qt widget which display MathGL graphics. It is defined in <code>#include <mgl2/qt.h></code>.
</p>
<img src="../qt.png" alt="Example of Qt window with MathGL plot.">
<dl>
<dt><a name="index-setDraw-on-QMathGL"></a><u>Method on QMathGL:</u> <code>void</code> <b>setDraw</b><i> (<code>mglDraw *</code>dr)</i></dt>
<dd><p>Sets drawing functions from a class inherited from <code>mglDraw</code>.
</p></dd></dl>
<dl>
<dt><a name="index-setDraw-on-QMathGL-1"></a><u>Method on QMathGL:</u> <code>void</code> <b>setDraw</b><i> (<code>int (*</code>draw<code>)(mglBase *</code>gr, <code>void *</code>p<code>)</code>, <code>void *</code>par=<code>NULL</code>)</i></dt>
<dt><a name="index-setDraw-on-QMathGL-2"></a><u>Method on QMathGL:</u> <code>void</code> <b>setDraw</b><i> (<code>int (*</code>draw<code>)(mglGraph *</code>gr<code>)</code>)</i></dt>
<dd><p>Sets the drawing function <var>draw</var>. There is support of a list of plots (frames). So as one can prepare a set of frames at first and redraw it fast later (but it requires more memory). Function should return positive number of frames for the list or zero if it will plot directly. Parameter <var>par</var> contains pointer to data for the plotting function <var>draw</var>.
</p></dd></dl>
<dl>
<dt><a name="index-setGraph-on-QMathGL"></a><u>Method on QMathGL:</u> <code>void</code> <b>setGraph</b><i> (<code>mglCanvas *</code>gr)</i></dt>
<dt><a name="index-setGraph-on-QMathGL-1"></a><u>Method on QMathGL:</u> <code>void</code> <b>setGraph</b><i> (<code>mglGraph *</code>gr)</i></dt>
<dd><p>Set pointer to external grapher (instead of built-in one). Note that QMathGL will automatically delete this object at destruction or at new <code>setGraph()</code> call.
</p></dd></dl>
<dl>
<dt><a name="index-getGraph-on-QMathGL"></a><u>Method on QMathGL:</u> <code>HMGL</code> <b>getGraph</b><i> ()</i></dt>
<dd><p>Get pointer to grapher.
</p></dd></dl>
<dl>
<dt><a name="index-setPopup-on-QMathGL"></a><u>Method on QMathGL:</u> <code>void</code> <b>setPopup</b><i> (<code>QMenu *</code>p)</i></dt>
<dd><p>Set popup menu pointer.
</p></dd></dl>
<dl>
<dt><a name="index-setSize-on-QMathGL"></a><u>Method on QMathGL:</u> <code>void</code> <b>setSize</b><i> (<code>int</code> w, <code>int</code> h)</i></dt>
<dd><p>Set widget/picture sizes
</p></dd></dl>
<dl>
<dt><a name="index-getRatio-on-QMathGL"></a><u>Method on QMathGL:</u> <code>double</code> <b>getRatio</b><i> ()</i></dt>
<dd><p>Return aspect ratio of the picture.
</p></dd></dl>
<dl>
<dt><a name="index-getPer-on-QMathGL"></a><u>Method on QMathGL:</u> <code>int</code> <b>getPer</b><i> ()</i></dt>
<dd><p>Get perspective value in percents.
</p></dd></dl>
<dl>
<dt><a name="index-getPhi-on-QMathGL"></a><u>Method on QMathGL:</u> <code>int</code> <b>getPhi</b><i> ()</i></dt>
<dd><p>Get Phi-angle value in degrees.
</p></dd></dl>
<dl>
<dt><a name="index-getTet-on-QMathGL"></a><u>Method on QMathGL:</u> <code>int</code> <b>getTet</b><i> ()</i></dt>
<dd><p>Get Theta-angle value in degrees.
</p></dd></dl>
<dl>
<dt><a name="index-getAlpha-on-QMathGL"></a><u>Method on QMathGL:</u> <code>bool</code> <b>getAlpha</b><i> ()</i></dt>
<dd><p>Get transparency state.
</p></dd></dl>
<dl>
<dt><a name="index-getLight-on-QMathGL"></a><u>Method on QMathGL:</u> <code>bool</code> <b>getLight</b><i> ()</i></dt>
<dd><p>Get lightning state.
</p></dd></dl>
<dl>
<dt><a name="index-getZoom-on-QMathGL"></a><u>Method on QMathGL:</u> <code>bool</code> <b>getZoom</b><i> ()</i></dt>
<dd><p>Get mouse zooming state.
</p></dd></dl>
<dl>
<dt><a name="index-getRotate-on-QMathGL"></a><u>Method on QMathGL:</u> <code>bool</code> <b>getRotate</b><i> ()</i></dt>
<dd><p>Get mouse rotation state.
</p></dd></dl>
<dl>
<dt><a name="index-refresh"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>refresh</b><i> ()</i></dt>
<dd><p>Redraw saved bitmap without executing drawing function.
</p></dd></dl>
<dl>
<dt><a name="index-update"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>update</b><i> ()</i></dt>
<dd><p>Update picture by executing drawing function.
</p></dd></dl>
<dl>
<dt><a name="index-copy"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>copy</b><i> ()</i></dt>
<dd><p>Copy graphics to clipboard.
</p></dd></dl>
<dl>
<dt><a name="index-copyClickCoor"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>copyClickCoor</b><i> ()</i></dt>
<dd><p>Copy coordinates of click (as text).
</p></dd></dl>
<dl>
<dt><a name="index-print"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>print</b><i> ()</i></dt>
<dd><p>Print current picture.
</p></dd></dl>
<dl>
<dt><a name="index-stop"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>stop</b><i> ()</i></dt>
<dd><p>Send signal to stop drawing.
</p></dd></dl>
<dl>
<dt><a name="index-adjust-1"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>adjust</b><i> ()</i></dt>
<dd><p>Adjust image size to fit whole widget.
</p></dd></dl>
<dl>
<dt><a name="index-nextSlide"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>nextSlide</b><i> ()</i></dt>
<dd><p>Show next slide.
</p></dd></dl>
<dl>
<dt><a name="index-prevSlide"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>prevSlide</b><i> ()</i></dt>
<dd><p>Show previous slide.
</p></dd></dl>
<dl>
<dt><a name="index-animation"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>animation</b><i> (<code>bool</code> st=<code>true</code>)</i></dt>
<dd><p>Start/stop animation.
</p></dd></dl>
<dl>
<dt><a name="index-setPer"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setPer</b><i> (<code>int</code> val)</i></dt>
<dd><p>Set perspective value.
</p></dd></dl>
<dl>
<dt><a name="index-setPhi"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setPhi</b><i> (<code>int</code> val)</i></dt>
<dd><p>Set Phi-angle value.
</p></dd></dl>
<dl>
<dt><a name="index-setTet"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setTet</b><i> (<code>int</code> val)</i></dt>
<dd><p>Set Theta-angle value.
</p></dd></dl>
<dl>
<dt><a name="index-setAlpha"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setAlpha</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Switch on/off transparency.
</p></dd></dl>
<dl>
<dt><a name="index-setLight"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setLight</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Switch on/off lightning.
</p></dd></dl>
<dl>
<dt><a name="index-setGrid"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setGrid</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Switch on/off drawing of grid for absolute coordinates.
</p></dd></dl>
<dl>
<dt><a name="index-setZoom"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setZoom</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Switch on/off mouse zooming.
</p></dd></dl>
<dl>
<dt><a name="index-setRotate"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setRotate</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Switch on/off mouse rotation.
</p></dd></dl>
<dl>
<dt><a name="index-zoomIn"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>zoomIn</b><i> ()</i></dt>
<dd><p>Zoom in graphics.
</p></dd></dl>
<dl>
<dt><a name="index-zoomOut"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>zoomOut</b><i> ()</i></dt>
<dd><p>Zoom out graphics.
</p></dd></dl>
<dl>
<dt><a name="index-shiftLeft"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>shiftLeft</b><i> ()</i></dt>
<dd><p>Shift graphics to left direction.
</p></dd></dl>
<dl>
<dt><a name="index-shiftRight"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>shiftRight</b><i> ()</i></dt>
<dd><p>Shift graphics to right direction.
</p></dd></dl>
<dl>
<dt><a name="index-shiftUp"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>shiftUp</b><i> ()</i></dt>
<dd><p>Shift graphics to up direction.
</p></dd></dl>
<dl>
<dt><a name="index-shiftDown"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>shiftDown</b><i> ()</i></dt>
<dd><p>Shift graphics to down direction.
</p></dd></dl>
<dl>
<dt><a name="index-restore"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>restore</b><i> ()</i></dt>
<dd><p>Restore zoom and rotation to default values.
</p></dd></dl>
<dl>
<dt><a name="index-exportPNG"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportPNG</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to PNG file.
</p></dd></dl>
<dl>
<dt><a name="index-exportPNGs"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportPNGs</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to PNG file (no transparency).
</p></dd></dl>
<dl>
<dt><a name="index-exportJPG"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportJPG</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to JPEG file.
</p></dd></dl>
<dl>
<dt><a name="index-exportBPS"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportBPS</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to bitmap EPS file.
</p></dd></dl>
<dl>
<dt><a name="index-exportEPS"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportEPS</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to vector EPS file.
</p></dd></dl>
<dl>
<dt><a name="index-exportSVG"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportSVG</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to SVG file.
</p></dd></dl>
<dl>
<dt><a name="index-exportGIF"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportGIF</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to GIF file.
</p></dd></dl>
<dl>
<dt><a name="index-exportTEX"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportTEX</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to LaTeX/Tikz file.
</p></dd></dl>
<dl>
<dt><a name="index-exportTGA"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportTGA</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to TGA file.
</p></dd></dl>
<dl>
<dt><a name="index-exportXYZ"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportXYZ</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to XYZ/XYZL/XYZF file.
</p></dd></dl>
<dl>
<dt><a name="index-exportOBJ"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportOBJ</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to OBJ/MTL file.
</p></dd></dl>
<dl>
<dt><a name="index-exportSTL"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportSTL</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to STL file.
</p></dd></dl>
<dl>
<dt><a name="index-exportOFF"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>exportOFF</b><i> (<code>QString</code> fname=<code>""</code>)</i></dt>
<dd><p>Export current picture to OFF file.
</p></dd></dl>
<dl>
<dt><a name="index-setUsePrimitives"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setUsePrimitives</b><i> (<code>bool</code> use)</i></dt>
<dd><p>Enable using list of primitives for frames. This allows frames transformation/zoom but requires much more memory. Default value is <code>true</code>.
</p></dd></dl>
<dl>
<dt><a name="index-setMGLFont"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>setMGLFont</b><i> (<code>QString</code> path)</i></dt>
<dd><p>Restore (<var>path</var>=<code>""</code>) or load font for graphics.
</p></dd></dl>
<dl>
<dt><a name="index-about"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>about</b><i> ()</i></dt>
<dd><p>Show about information.
</p></dd></dl>
<dl>
<dt><a name="index-aboutQt"></a><u>Slot on <code>QMathGL</code>:</u> <code>void</code> <b>aboutQt</b><i> ()</i></dt>
<dd><p>Show information about Qt version.
</p></dd></dl>
<dl>
<dt><a name="index-phiChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>phiChanged</b><i> (<code>int</code> val)</i></dt>
<dd><p>Phi angle changed (by mouse or by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-tetChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>tetChanged</b><i> (<code>int</code> val)</i></dt>
<dd><p>Tet angle changed (by mouse or by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-perChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>perChanged</b><i> (<code>int</code> val)</i></dt>
<dd><p>Perspective changed (by mouse or by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-alphaChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>alphaChanged</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Transparency changed (by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-lightChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>lightChanged</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Lighting changed (by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-gridChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>gridChanged</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Grid drawing changed (by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-zoomChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>zoomChanged</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Zooming changed (by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-rotateChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>rotateChanged</b><i> (<code>bool</code> val)</i></dt>
<dd><p>Rotation changed (by toolbar).
</p></dd></dl>
<dl>
<dt><a name="index-mouseClick"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>mouseClick</b><i> (<code>mreal</code> x, <code>mreal</code> y, <code>mreal</code> z)</i></dt>
<dd><p>Mouse click take place at position {x,y,z}.
</p></dd></dl>
<dl>
<dt><a name="index-frameChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>frameChanged</b><i> (<code>int</code> val)</i></dt>
<dd><p>Need another frame to show.
</p></dd></dl>
<dl>
<dt><a name="index-showWarn"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>showWarn</b><i> (<code>QString</code> warn)</i></dt>
<dd><p>Need to show warning.
</p></dd></dl>
<dl>
<dt><a name="index-posChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>posChanged</b><i> (<code>QString</code> pos)</i></dt>
<dd><p>Position of mouse click is changed.
</p></dd></dl>
<dl>
<dt><a name="index-objChanged"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>objChanged</b><i> (<code>int</code> id)</i></dt>
<dd><p>Object id is changed (due to mouse click).
</p></dd></dl>
<dl>
<dt><a name="index-refreshData"></a><u>Signal on <code>QMathGL</code>:</u> <code>void</code> <b>refreshData</b><i> ()</i></dt>
<dd><p>Data can be changed (drawing is finished).
</p></dd></dl>
<dl>
<dt><a name="index-appName-of-QMathGL"></a><u>QMathGL option of QMathGL:</u> <code>QString</code> <b>appName</b></dt>
<dd><p>Application name for message boxes.
</p></dd></dl>
<dl>
<dt><a name="index-autoResize-of-QMathGL"></a><u>QMathGL option of QMathGL:</u> <code>bool</code> <b>autoResize</b></dt>
<dd><p>Allow auto resizing (default is false).
</p></dd></dl>
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