NAME¶

QwtDoubleInterval -

SYNOPSIS¶

#include <qwt_double_interval.h>

Public Types¶

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

Public Member Functions¶

QwtDoubleInterval () QwtDoubleInterval (double minValue, double maxValue, int borderFlags=IncludeBorders) 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| (const QwtDoubleInterval &) const QwtDoubleInterval operator| (double) const QwtDoubleInterval & operator|= (const QwtDoubleInterval &) QwtDoubleInterval & operator|= (double) 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:

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:

QwtDoubleInterval QwtDoubleInterval::operator& (const QwtDoubleInterval &interval) const [inline]¶

Intersection of two intervals See also:

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:

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:

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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