NAME¶

QwtDoubleInterval - A class representing an interval.

SYNOPSIS¶

#include <qwt_double_interval.h>

Public Types¶

enum BorderMode { IncludeBorders = 0, ExcludeMinimum = 1, ExcludeMaximum = 2, ExcludeBorders = ExcludeMinimum | ExcludeMaximum }

Public Member Functions¶

int borderFlags () const bool contains (double value) const QwtDoubleInterval extend (double value) const QwtDoubleInterval intersect (const QwtDoubleInterval &) const bool intersects (const QwtDoubleInterval &) const void invalidate () QwtDoubleInterval inverted () const bool isNull () const bool isValid () const QwtDoubleInterval limited (double minValue, double maxValue) const double maxValue () const double minValue () const QwtDoubleInterval normalized () const int operator!= (const QwtDoubleInterval &) const QwtDoubleInterval operator& (const QwtDoubleInterval &) const QwtDoubleInterval & operator&= (const QwtDoubleInterval &) int operator== (const QwtDoubleInterval &) const QwtDoubleInterval operator| (double) const QwtDoubleInterval operator| (const QwtDoubleInterval &) const QwtDoubleInterval & operator|= (double) QwtDoubleInterval & operator|= (const QwtDoubleInterval &) QwtDoubleInterval (double minValue, double maxValue, int borderFlags=IncludeBorders) QwtDoubleInterval () void setBorderFlags (int) void setInterval (double minValue, double maxValue, int borderFlags=IncludeBorders) void setMaxValue (double) void setMinValue (double) QwtDoubleInterval symmetrize (double value) const QwtDoubleInterval unite (const QwtDoubleInterval &) const double width () const

Detailed Description¶

A class representing an interval. The interval is represented by 2 doubles, the lower and the upper limit.

Member Enumeration Documentation¶

enum QwtDoubleInterval::BorderMode Flag indicating if a border is included/excluded from an interval¶

•

IncludeBorders

 

min/max values are inside the interval

•

ExcludeMinimum

 

min value is not included in the interval

•

ExcludeMaximum

 

max value is not included in the interval

•

ExcludeBorders

 

min/max values are not included in the interval

See also:

Constructor & Destructor Documentation¶

QwtDoubleInterval::QwtDoubleInterval () [inline]¶

Default Constructor. Creates an invalid interval [0.0, -1.0] See also:

QwtDoubleInterval::QwtDoubleInterval (doubleminValue, doublemaxValue, intborderFlags = IncludeBorders) [inline] Constructor¶

Build an interval with from min/max values Parameters:

Member Function Documentation¶

int QwtDoubleInterval::borderFlags () const [inline] Returns:¶

See also:

bool QwtDoubleInterval::contains (doublevalue) const Test if a value is inside an interval¶

Parameters: Returns:

QwtDoubleInterval QwtDoubleInterval::extend (doublevalue) const Extend the interval¶

If value is below minValue, value becomes the lower limit. If value is above maxValue, value becomes the upper limit. extend has no effect for invalid intervals Parameters: See also:

QwtDoubleInterval QwtDoubleInterval::intersect (const QwtDoubleInterval &other) const¶

Intersect 2 intervals.

bool QwtDoubleInterval::intersects (const QwtDoubleInterval &other) const Test if two intervals overlap¶

void QwtDoubleInterval::invalidate () [inline] Invalidate the interval¶

The limits are set to interval [0.0, -1.0] See also:

QwtDoubleInterval QwtDoubleInterval::inverted () const Invert the limits of the interval¶

Returns: See also:

bool QwtDoubleInterval::isNull () const [inline] Returns:¶

bool QwtDoubleInterval::isValid () const [inline] A interval is valid when minValue() <= maxValue(). In case of QwtDoubleInterval::ExcludeBorders it is true when minValue() < maxValue()¶

QwtDoubleInterval QwtDoubleInterval::limited (doublelowerBound, doubleupperBound) const Limit the interval, keeping the border modes¶

Parameters: Returns:

double QwtDoubleInterval::maxValue () const [inline] Returns:¶

double QwtDoubleInterval::minValue () const [inline] Returns:¶

QwtDoubleInterval QwtDoubleInterval::normalized () const¶

Normalize the limits of the interval. If maxValue() < minValue() the limits will be inverted. Returns: See also:

int QwtDoubleInterval::operator!= (const QwtDoubleInterval &other) const [inline]¶

Compare two intervals.

QwtDoubleInterval QwtDoubleInterval::operator& (const QwtDoubleInterval &interval) const [inline] Intersection of two intervals¶

See also:

QwtDoubleInterval & QwtDoubleInterval::operator&= (const QwtDoubleInterval &interval)¶

Intersects this interval with the given interval.

int QwtDoubleInterval::operator== (const QwtDoubleInterval &other) const [inline]¶

Compare two intervals.

QwtDoubleInterval QwtDoubleInterval::operator| (const QwtDoubleInterval &interval) const [inline] Union of two intervals¶

See also:

QwtDoubleInterval QwtDoubleInterval::operator| (doublevalue) const [inline] Extend an interval¶

See also:

QwtDoubleInterval & QwtDoubleInterval::operator|= (const QwtDoubleInterval &interval)¶

Unites this interval with the given interval.

void QwtDoubleInterval::setBorderFlags (intborderFlags) [inline] Change the border flags¶

Parameters: See also:

void QwtDoubleInterval::setInterval (doubleminValue, doublemaxValue, intborderFlags = IncludeBorders) [inline] Assign the limits of the interval¶

Parameters:

void QwtDoubleInterval::setMaxValue (doublemaxValue) [inline] Assign the upper limit of the interval¶

Parameters:

void QwtDoubleInterval::setMinValue (doubleminValue) [inline] Assign the lower limit of the interval¶

Parameters:

QwtDoubleInterval QwtDoubleInterval::symmetrize (doublevalue) const Adjust the limit that is closer to value, so that value becomes the center of the interval.¶

Parameters: Returns:

QwtDoubleInterval QwtDoubleInterval::unite (const QwtDoubleInterval &other) const¶

Unite 2 intervals.

double QwtDoubleInterval::width () const [inline] Return the width of an interval The width of invalid intervals is 0.0, otherwise the result is maxValue() - minValue().¶

See also:

Author¶

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