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QwtPlotSpectroCurve(3) Qwt User's Guide QwtPlotSpectroCurve(3)

NAME

QwtPlotSpectroCurve -
Curve that displays 3D points as dots, where the z coordinate is mapped to a color.

SYNOPSIS

#include <qwt_plot_spectrocurve.h>
Inherits QwtPlotSeriesItem< QwtPoint3D >.

Public Types


enum PaintAttribute { ClipPoints = 1 }
 
typedef QFlags< PaintAttribute > PaintAttributes
 

Public Member Functions


QwtPlotSpectroCurve (const QString &title=QString::null)
 
QwtPlotSpectroCurve (const QwtText &title)
 
virtual ~QwtPlotSpectroCurve ()
 
virtual int rtti () const
 
void setPaintAttribute (PaintAttribute, bool on=true)
 
bool testPaintAttribute (PaintAttribute) const
 
void setSamples (const QVector< QwtPoint3D > &)
 
void setColorMap (QwtColorMap *)
 
const QwtColorMap * colorMap () const
 
void setColorRange (const QwtInterval &)
 
QwtInterval & colorRange () const
 
virtual void drawSeries (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
 
void setPenWidth (double width)
 
double penWidth () const
 

Protected Member Functions


virtual void drawDots (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
 

Detailed Description

Curve that displays 3D points as dots, where the z coordinate is mapped to a color.

Member Typedef Documentation

typedef QFlags< PaintAttribute> QwtPlotSpectroCurve::PaintAttributes

Paint attributes.

Member Enumeration Documentation

enum QwtPlotSpectroCurve::PaintAttribute

Paint attributes.
Enumerator:
ClipPoints
Clip points outside the canvas rectangle.

Constructor & Destructor Documentation

QwtPlotSpectroCurve::QwtPlotSpectroCurve (const QString &title = QString::null) [explicit] Constructor

Parameters:
title Title of the curve

QwtPlotSpectroCurve::QwtPlotSpectroCurve (const QwtText &title) [explicit] Constructor

Parameters:
title Title of the curve

QwtPlotSpectroCurve::~QwtPlotSpectroCurve () [virtual]

Destructor.

Member Function Documentation

const QwtColorMap * QwtPlotSpectroCurve::colorMap () const Returns:

Color Map used for mapping the intensity values to colors
See also:
setColorMap(), setColorRange(), QwtColorMap::color()

QwtInterval & QwtPlotSpectroCurve::colorRange () const Returns:

Value interval, that corresponds to the color map
See also:
setColorRange(), setColorMap(), QwtColorMap::color()

void QwtPlotSpectroCurve::drawDots (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, intfrom, intto) const [protected, virtual] Draw a subset of the points

Parameters:
painter Painter
 
xMap Maps x-values into pixel coordinates.
 
yMap Maps y-values into pixel coordinates.
 
canvasRect Contents rect of the canvas
 
from Index of the first sample to be painted
 
to Index of the last sample to be painted. If to < 0 the series will be painted to its last sample.
See also:
drawSeries()

void QwtPlotSpectroCurve::drawSeries (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, intfrom, intto) const [virtual] Draw a subset of the points

Parameters:
painter Painter
 
xMap Maps x-values into pixel coordinates.
 
yMap Maps y-values into pixel coordinates.
 
canvasRect Contents rect of the canvas
 
from Index of the first sample to be painted
 
to Index of the last sample to be painted. If to < 0 the series will be painted to its last sample.
See also:
drawDots()
Implements QwtPlotAbstractSeriesItem.

double QwtPlotSpectroCurve::penWidth () const Returns:

Pen width used to draw a dot
See also:
setPenWidth()

int QwtPlotSpectroCurve::rtti () const [virtual] Returns:

QwtPlotItem::Rtti_PlotSpectroCurve
Reimplemented from QwtPlotItem.

void QwtPlotSpectroCurve::setColorMap ( QwtColorMap *colorMap) Change the color map

Often it is useful to display the mapping between intensities and colors as an additional plot axis, showing a color bar.
Parameters:
colorMap Color Map
See also:
colorMap(), setColorRange(), QwtColorMap::color(), QwtScaleWidget::setColorBarEnabled(), QwtScaleWidget::setColorMap()

void QwtPlotSpectroCurve::setColorRange (const QwtInterval &interval) Set the value interval, that corresponds to the color map

Parameters:
interval interval.minValue() corresponds to 0.0, interval.maxValue() to 1.0 on the color map.
See also:
colorRange(), setColorMap(), QwtColorMap::color()

void QwtPlotSpectroCurve::setPaintAttribute ( PaintAttributeattribute, boolon = true) Specify an attribute how to draw the curve

Parameters:
attribute Paint attribute
 
on On/Off /sa PaintAttribute, testPaintAttribute()

void QwtPlotSpectroCurve::setPenWidth (doublepenWidth) Assign a pen width

Parameters:
penWidth New pen width
See also:
penWidth()

void QwtPlotSpectroCurve::setSamples (const QVector< QwtPoint3D > &samples) Initialize data with an array of samples.

Parameters:
samples Vector of points

bool QwtPlotSpectroCurve::testPaintAttribute ( PaintAttributeattribute) const

Return the current paint attributes. See also:
PaintAttribute, setPaintAttribute()

Author

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Fri Apr 15 2011 Version 6.0.0