QwtDoubleInterval(3) Qwt User's Guide QwtDoubleInterval(3)NAMEQwtDoubleInterval-
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:
setBorderMode(), testBorderMode()Constructor & Destructor Documentation
QwtDoubleInterval::QwtDoubleInterval () [inline]
Default Constructor. Creates an invalid interval [0.0, -1.0]
See also:
setInterval(), isValid()
QwtDoubleInterval::QwtDoubleInterval (doubleminValue, doublemaxValue,
intborderFlags = IncludeBorders) [inline] Constructor
Build an interval with from min/max values
Parameters:
minValue Minimum value
maxValue Maximum value
borderFlags Include/Exclude borders
Member Function Documentation
int QwtDoubleInterval::borderFlags () const [inline] Returns:
Border flags
See also:
setBorderFlags()
bool QwtDoubleInterval::contains (doublevalue) const Test if a value is
inside an interval
Parameters:
value Value
Returns:
true, if value >= minValue() && value <= maxValue()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:
value Value
See also:
isValid()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:
isValid()QwtDoubleInterval QwtDoubleInterval::inverted () const Invert the limits of
the interval
Returns:
Inverted interval
See also:
normalized()
bool QwtDoubleInterval::isNull () const [inline] Returns:
true, if isValid() && (minValue() >= maxValue())
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:
lowerBound Lower limit
upperBound Upper limit
Returns:
Limited interval
double QwtDoubleInterval::maxValue () const [inline] Returns:
Upper limit of the interval
double QwtDoubleInterval::minValue () const [inline] Returns:
Lower limit of the interval
QwtDoubleInterval QwtDoubleInterval::normalized () const
Normalize the limits of the interval. If maxValue() < minValue() the
limits will be inverted.
Returns:
Normalized interval
See also:
isValid(), inverted()
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:
intersect()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:
unite()QwtDoubleInterval QwtDoubleInterval::operator| (doublevalue) const [inline]
Extend an interval
See also:
extend()QwtDoubleInterval & QwtDoubleInterval::operator|= (const QwtDoubleInterval
&interval)
Unites this interval with the given interval.
void QwtDoubleInterval::setBorderFlags (intborderFlags) [inline] Change the
border flags
Parameters:
borderFlags Or'd BorderMode flags
See also:
borderFlags()
void QwtDoubleInterval::setInterval (doubleminValue, doublemaxValue,
intborderFlags = IncludeBorders) [inline] Assign the limits of the
interval
Parameters:
minValue Minimum value
maxValue Maximum value
borderFlags Include/Exclude borders
void QwtDoubleInterval::setMaxValue (doublemaxValue) [inline] Assign the
upper limit of the interval
Parameters:
maxValue Maximum value
void QwtDoubleInterval::setMinValue (doubleminValue) [inline] Assign the
lower limit of the interval
Parameters:
minValue Minimum value
QwtDoubleInterval QwtDoubleInterval::symmetrize (doublevalue) const Adjust
the limit that is closer to value, so that value becomes the center of
the interval.
Parameters:
value Center
Returns:
Interval with value as center
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:
isValid()Author
Generated automatically by Doxygen for Qwt User's Guide from the source
code.
Version 5.2.2 Mon Aug 1 2011 QwtDoubleInterval(3)
