QtiPlot 0.9.7.3
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A scale engine for reciprocal (1/t) scales. More...
#include <ReciprocalScaleEngine.h>
Public Member Functions | |
virtual void | autoScale (int maxSteps, double &x1, double &x2, double &stepSize) const |
virtual QwtScaleDiv | divideScale (double x1, double x2, int numMajorSteps, int numMinorSteps, double stepSize=0.0) const |
Calculate a scale division. | |
virtual QwtScaleTransformation * | transformation () const |
Protected Member Functions | |
QwtDoubleInterval | align (const QwtDoubleInterval &, double stepSize) const |
Align an interval to a step size. | |
Private Member Functions | |
QwtValueList | buildMajorTicks (const QwtDoubleInterval &interval, double stepSize) const |
void | buildMinorTicks (const QwtValueList &majorTicks, int maxMinMark, double step, QwtValueList &, QwtValueList &) const |
void | buildTicks (const QwtDoubleInterval &, double stepSize, int maxMinSteps, QwtValueList ticks[QwtScaleDiv::NTickTypes]) const |
A scale engine for reciprocal (1/t) scales.
QwtDoubleInterval ReciprocalScaleEngine::align | ( | const QwtDoubleInterval & | interval, |
double | stepSize | ||
) | const [protected] |
Align an interval to a step size.
The limits of an interval are aligned that both are integer multiples of the step size.
interval | Interval |
stepSize | Step size |
Referenced by autoScale(), and buildTicks().
void ReciprocalScaleEngine::autoScale | ( | int | maxNumSteps, |
double & | x1, | ||
double & | x2, | ||
double & | stepSize | ||
) | const [virtual] |
Align and divide an interval
maxNumSteps | Max. number of steps |
x1 | First limit of the interval (In/Out) |
x2 | Second limit of the interval (In/Out) |
stepSize | Step size (Out) |
References align().
QwtValueList ReciprocalScaleEngine::buildMajorTicks | ( | const QwtDoubleInterval & | interval, |
double | stepSize | ||
) | const [private] |
Referenced by buildTicks().
void ReciprocalScaleEngine::buildMinorTicks | ( | const QwtValueList & | majorTicks, |
int | maxMinMark, | ||
double | step, | ||
QwtValueList & | minorTicks, | ||
QwtValueList & | mediumTicks | ||
) | const [private] |
Referenced by buildTicks().
void ReciprocalScaleEngine::buildTicks | ( | const QwtDoubleInterval & | interval, |
double | stepSize, | ||
int | maxMinSteps, | ||
QwtValueList | ticks[QwtScaleDiv::NTickTypes] | ||
) | const [private] |
References align(), buildMajorTicks(), and buildMinorTicks().
Referenced by divideScale().
QwtScaleDiv ReciprocalScaleEngine::divideScale | ( | double | x1, |
double | x2, | ||
int | maxMajSteps, | ||
int | maxMinSteps, | ||
double | stepSize = 0.0 |
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) | const [virtual] |
Calculate a scale division.
x1 | First interval limit |
x2 | Second interval limit |
maxMajSteps | Maximum for the number of major steps |
maxMinSteps | Maximum number of minor steps |
stepSize | Step size. If stepSize == 0, the scaleEngine calculates one. |
References buildTicks().
QwtScaleTransformation * ReciprocalScaleEngine::transformation | ( | ) | const [virtual] |
Return a dummy transformation