QwtDoubleInterval(3) | Qwt User's Guide | QwtDoubleInterval(3) |
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:
maxValue Maximum value
borderFlags Include/Exclude borders
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:
upperBound Upper limit
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:
maxValue Maximum value
borderFlags Include/Exclude borders
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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Tue Nov 20 2012 | Version 5.2.3 |