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 }
Public Member Functions¶
QwtPlotSpectroCurve (const QString &title=QString::null)
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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