Sources_For_Linux/Qwt/doc/man/man3/QwtPolarCurve.3

.TH "QwtPolarCurve" 3 "Fri Sep 19 2014" "Version 1.1.1" "Qwt Polar User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtPolarCurve \- 
.PP
An item, that represents a series of points\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_polar_curve\&.h>\fP
.PP
Inherits \fBQwtPolarItem\fP\&.
.SS "Public Types"

.in +1c
.ti -1c
.RI "enum \fBCurveStyle\fP { \fBNoCurve\fP, \fBLines\fP, \fBUserCurve\fP = 100 }"
.br
.ti -1c
.RI "enum \fBLegendAttribute\fP { \fBLegendShowLine\fP = 0x01, \fBLegendShowSymbol\fP = 0x02 }"
.br
.RI "\fIAttributes how to represent the curve on the legend\&. \fP"
.ti -1c
.RI "typedef QFlags< \fBLegendAttribute\fP > \fBLegendAttributes\fP"
.br
.RI "\fILegend attributes\&. \fP"
.in -1c
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "\fBQwtPolarCurve\fP ()"
.br
.RI "\fIConstructor\&. \fP"
.ti -1c
.RI "\fBQwtPolarCurve\fP (const QwtText &\fBtitle\fP)"
.br
.ti -1c
.RI "\fBQwtPolarCurve\fP (const QString &\fBtitle\fP)"
.br
.ti -1c
.RI "virtual \fB~QwtPolarCurve\fP ()"
.br
.RI "\fIDestructor\&. \fP"
.ti -1c
.RI "virtual int \fBrtti\fP () const "
.br
.ti -1c
.RI "void \fBsetLegendAttribute\fP (\fBLegendAttribute\fP, bool on=true)"
.br
.ti -1c
.RI "bool \fBtestLegendAttribute\fP (\fBLegendAttribute\fP) const "
.br
.RI "\fITest if a lefend attribute is enables\&. \fP"
.ti -1c
.RI "void \fBsetData\fP (QwtSeriesData< QwtPointPolar > *\fBdata\fP)"
.br
.ti -1c
.RI "const QwtSeriesData
.br
< QwtPointPolar > * \fBdata\fP () const "
.br
.ti -1c
.RI "size_t \fBdataSize\fP () const "
.br
.ti -1c
.RI "QwtPointPolar \fBsample\fP (int i) const "
.br
.ti -1c
.RI "void \fBsetPen\fP (const QPen &)"
.br
.RI "\fIAssign a pen\&. \fP"
.ti -1c
.RI "const QPen & \fBpen\fP () const "
.br
.ti -1c
.RI "void \fBsetStyle\fP (\fBCurveStyle\fP \fBstyle\fP)"
.br
.ti -1c
.RI "\fBCurveStyle\fP \fBstyle\fP () const "
.br
.ti -1c
.RI "void \fBsetSymbol\fP (QwtSymbol *)"
.br
.RI "\fIAssign a symbol\&. \fP"
.ti -1c
.RI "const QwtSymbol * \fBsymbol\fP () const "
.br
.ti -1c
.RI "void \fBsetCurveFitter\fP (QwtCurveFitter *)"
.br
.RI "\fIInsert a curve fitter\&. \fP"
.ti -1c
.RI "QwtCurveFitter * \fBcurveFitter\fP () const "
.br
.ti -1c
.RI "virtual void \fBdraw\fP (QPainter *p, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, double radius, const QRectF &canvasRect) const "
.br
.ti -1c
.RI "virtual void \fBdraw\fP (QPainter *p, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const "
.br
.RI "\fIDraw an interval of the curve\&. \fP"
.ti -1c
.RI "virtual QwtInterval \fBboundingInterval\fP (int scaleId) const "
.br
.ti -1c
.RI "virtual QwtGraphic \fBlegendIcon\fP (int index, const QSizeF &) const "
.br
.in -1c
.SS "Protected Member Functions"

.in +1c
.ti -1c
.RI "void \fBinit\fP ()"
.br
.RI "\fIInitialize data members\&. \fP"
.ti -1c
.RI "virtual void \fBdrawCurve\fP (QPainter *, int \fBstyle\fP, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const "
.br
.ti -1c
.RI "virtual void \fBdrawSymbols\fP (QPainter *, const QwtSymbol &, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const "
.br
.ti -1c
.RI "void \fBdrawLines\fP (QPainter *, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const "
.br
.in -1c
.SH "Detailed Description"
.PP 
An item, that represents a series of points\&. 

A curve is the representation of a series of points in polar coordinates\&. The points are connected to the curve using the abstract QwtData interface\&.
.PP
\fBSee Also:\fP
.RS 4
\fBQwtPolarPlot\fP, QwtSymbol, QwtScaleMap 
.RE
.PP

.SH "Member Enumeration Documentation"
.PP 
.SS "enum \fBQwtPolarCurve::CurveStyle\fP"
Curve styles\&. 
.PP
\fBSee Also:\fP
.RS 4
\fBsetStyle()\fP, \fBstyle()\fP 
.RE
.PP

.PP
\fBEnumerator\fP
.in +1c
.TP
\fB\fINoCurve \fP\fP
Don't draw a curve\&. Note: This doesn't affect the symbols\&. 
.TP
\fB\fILines \fP\fP
Connect the points with straight lines\&. The lines might be interpolated depending on the 'Fitted' attribute\&. Curve fitting can be configured using \fBsetCurveFitter()\fP\&. 
.TP
\fB\fIUserCurve \fP\fP
Values > 100 are reserved for user specific curve styles\&. 
.SS "enum \fBQwtPolarCurve::LegendAttribute\fP"

.PP
Attributes how to represent the curve on the legend\&. If none of the flags is activated QwtPlotCurve tries to find a color representing the curve and paints a rectangle with it\&. In the default setting all attributes are off\&.
.PP
\fBSee Also:\fP
.RS 4
\fBsetLegendAttribute()\fP, \fBtestLegendAttribute()\fP 
.RE
.PP

.PP
\fBEnumerator\fP
.in +1c
.TP
\fB\fILegendShowLine \fP\fP
If the curveStyle() is not NoCurve a line is painted with the curvePen()\&. 
.TP
\fB\fILegendShowSymbol \fP\fP
If the curve has a valid symbol it is painted\&. 
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtPolarCurve::QwtPolarCurve (const QwtText &title)\fC [explicit]\fP"
Constructor 
.PP
\fBParameters:\fP
.RS 4
\fItitle\fP title of the curve 
.RE
.PP

.SS "QwtPolarCurve::QwtPolarCurve (const QString &title)\fC [explicit]\fP"
Constructor 
.PP
\fBParameters:\fP
.RS 4
\fItitle\fP title of the curve 
.RE
.PP

.SH "Member Function Documentation"
.PP 
.SS "QwtInterval QwtPolarCurve::boundingInterval (intscaleId) const\fC [virtual]\fP"
Interval, that is necessary to display the item This interval can be useful for operations like clipping or autoscaling
.PP
\fBParameters:\fP
.RS 4
\fIscaleId\fP Scale index 
.RE
.PP
\fBReturns:\fP
.RS 4
bounding interval
.RE
.PP
\fBSee Also:\fP
.RS 4
QwtData::boundingRect() 
.RE
.PP

.PP
Reimplemented from \fBQwtPolarItem\fP\&.
.SS "QwtCurveFitter * QwtPolarCurve::curveFitter () const"

.PP
\fBReturns:\fP
.RS 4
The curve fitter 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBsetCurveFitter()\fP 
.RE
.PP

.SS "const QwtSeriesData< QwtPointPolar > * QwtPolarCurve::data () const\fC [inline]\fP"

.PP
\fBReturns:\fP
.RS 4
the the curve data 
.RE
.PP

.SS "size_t QwtPolarCurve::dataSize () const"

.PP
\fBReturns:\fP
.RS 4
Number of points 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBsetData()\fP 
.RE
.PP

.SS "void QwtPolarCurve::draw (QPainter *painter, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, doubleradius, const QRectF &canvasRect) const\fC [virtual]\fP"
Draw the curve
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI 
.br
\fIradialMap\fP Maps radius values into painter coordinates\&. 
.br
\fIpole\fP Position of the pole in painter coordinates 
.br
\fIradius\fP Radius of the complete plot area in painter coordinates 
.br
\fIcanvasRect\fP Contents rect of the canvas in painter coordinates 
.RE
.PP

.PP
Implements \fBQwtPolarItem\fP\&.
.SS "void QwtPolarCurve::draw (QPainter *painter, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, intfrom, intto) const\fC [virtual]\fP"

.PP
Draw an interval of the curve\&. 
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI 
.br
\fIradialMap\fP Maps radius values into painter coordinates\&. 
.br
\fIpole\fP Position of the pole in painter coordinates 
.br
\fIfrom\fP index of the first point to be painted 
.br
\fIto\fP index of the last point to be painted\&. If to < 0 the curve will be painted to its last point\&.
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBdrawCurve()\fP, \fBdrawSymbols()\fP, 
.RE
.PP

.SS "void QwtPolarCurve::drawCurve (QPainter *painter, intstyle, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, intfrom, intto) const\fC [protected]\fP, \fC [virtual]\fP"
Draw the line part (without symbols) of a curve interval\&.
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIstyle\fP Curve style, see \fBQwtPolarCurve::CurveStyle\fP 
.br
\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI 
.br
\fIradialMap\fP Maps radius values into painter coordinates\&. 
.br
\fIpole\fP Position of the pole in painter coordinates 
.br
\fIfrom\fP index of the first point to be painted 
.br
\fIto\fP index of the last point to be painted\&. 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBdraw()\fP, \fBdrawLines()\fP 
.RE
.PP

.SS "void QwtPolarCurve::drawLines (QPainter *painter, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, intfrom, intto) const\fC [protected]\fP"
Draw lines
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI 
.br
\fIradialMap\fP Maps radius values into painter coordinates\&. 
.br
\fIpole\fP Position of the pole in painter coordinates 
.br
\fIfrom\fP index of the first point to be painted 
.br
\fIto\fP index of the last point to be painted\&. 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBdraw()\fP, \fBdrawLines()\fP, \fBsetCurveFitter()\fP 
.RE
.PP

.SS "void QwtPolarCurve::drawSymbols (QPainter *painter, const QwtSymbol &symbol, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, intfrom, intto) const\fC [protected]\fP, \fC [virtual]\fP"
Draw symbols
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIsymbol\fP Curve symbol 
.br
\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI 
.br
\fIradialMap\fP Maps radius values into painter coordinates\&. 
.br
\fIpole\fP Position of the pole in painter coordinates 
.br
\fIfrom\fP index of the first point to be painted 
.br
\fIto\fP index of the last point to be painted\&.
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBsetSymbol()\fP, \fBdraw()\fP, \fBdrawCurve()\fP 
.RE
.PP

.SS "QwtGraphic QwtPolarCurve::legendIcon (intindex, const QSizeF &size) const\fC [virtual]\fP"

.PP
\fBReturns:\fP
.RS 4
Icon representing the curve on the legend
.RE
.PP
\fBParameters:\fP
.RS 4
\fIindex\fP Index of the legend entry ( ignored as there is only one ) 
.br
\fIsize\fP Icon size
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBQwtPolarItem::setLegendIconSize()\fP, \fBQwtPolarItem::legendData()\fP 
.RE
.PP

.PP
Reimplemented from \fBQwtPolarItem\fP\&.
.SS "const QPen & QwtPolarCurve::pen () const"

.PP
\fBReturns:\fP
.RS 4
Pen used to draw the lines 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBsetPen()\fP 
.RE
.PP

.SS "int QwtPolarCurve::rtti () const\fC [virtual]\fP"

.PP
\fBReturns:\fP
.RS 4
\fBQwtPolarCurve::Rtti_PolarCurve\fP 
.RE
.PP

.PP
Reimplemented from \fBQwtPolarItem\fP\&.
.SS "QwtPointPolar QwtPolarCurve::sample (inti) const\fC [inline]\fP"

.PP
\fBParameters:\fP
.RS 4
\fIi\fP index 
.RE
.PP
\fBReturns:\fP
.RS 4
point at position i 
.RE
.PP

.SS "void QwtPolarCurve::setCurveFitter (QwtCurveFitter *curveFitter)"

.PP
Insert a curve fitter\&. 
.PP
\fBParameters:\fP
.RS 4
\fIcurveFitter\fP Curve fitter
.RE
.PP
A curve fitter interpolates the curve points\&. F\&.e \fBQwtPolarFitter\fP adds equidistant points so that the connection gets rounded instead of having straight lines\&. If curveFitter is NULL fitting is disabled\&.
.PP
\fBSee Also:\fP
.RS 4
\fBcurveFitter()\fP 
.RE
.PP

.SS "void QwtPolarCurve::setData (QwtSeriesData< QwtPointPolar > *data)"
Initialize data with a pointer to QwtSeriesData<QwtPointPolar>\&.
.PP
The x-values of the data object represent the azimuth, the y-value respresent the radius\&.
.PP
\fBParameters:\fP
.RS 4
\fIdata\fP Data 
.RE
.PP

.SS "void QwtPolarCurve::setLegendAttribute (\fBLegendAttribute\fPattribute, boolon = \fCtrue\fP)"
Specify an attribute how to draw the legend identifier
.PP
\fBParameters:\fP
.RS 4
\fIattribute\fP Attribute 
.br
\fIon\fP On/Off /sa LegendAttribute, \fBtestLegendAttribute()\fP 
.RE
.PP

.SS "void QwtPolarCurve::setPen (const QPen &pen)"

.PP
Assign a pen\&. 
.PP
\fBParameters:\fP
.RS 4
\fIpen\fP New pen 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBpen()\fP 
.RE
.PP

.SS "void QwtPolarCurve::setStyle (\fBCurveStyle\fPstyle)"
Set the curve's drawing style
.PP
\fBParameters:\fP
.RS 4
\fIstyle\fP Curve style 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBCurveStyle\fP, \fBstyle()\fP 
.RE
.PP

.SS "void QwtPolarCurve::setSymbol (QwtSymbol *symbol)"

.PP
Assign a symbol\&. 
.PP
\fBParameters:\fP
.RS 4
\fIsymbol\fP Symbol 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBsymbol()\fP 
.RE
.PP

.SS "\fBQwtPolarCurve::CurveStyle\fP QwtPolarCurve::style () const"

.PP
\fBReturns:\fP
.RS 4
Current style 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBCurveStyle\fP, \fBsetStyle()\fP 
.RE
.PP

.SS "const QwtSymbol * QwtPolarCurve::symbol () const"

.PP
\fBReturns:\fP
.RS 4
The current symbol 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBsetSymbol()\fP 
.RE
.PP

.SS "bool QwtPolarCurve::testLegendAttribute (\fBLegendAttribute\fPattribute) const"

.PP
Test if a lefend attribute is enables\&. 
.PP
\fBParameters:\fP
.RS 4
\fIattribute\fP Legend attribute
.RE
.PP
\fBReturns:\fP
.RS 4
True if attribute is enabled 
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBLegendAttribute\fP, \fBsetLegendAttribute()\fP 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt Polar User's Guide from the source code\&.