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Qwt User's Guide 6.0.0
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A class representing an interval. More...
#include <qwt_interval.h>
Public Types | |
| enum | BorderFlag { IncludeBorders = 0x00, ExcludeMinimum = 0x01, ExcludeMaximum = 0x02, ExcludeBorders = ExcludeMinimum | ExcludeMaximum } |
| typedef QFlags< BorderFlag > | BorderFlags |
Public Member Functions | |
| QwtInterval () | |
| QwtInterval (double minValue, double maxValue, BorderFlags=IncludeBorders) | |
| void | setInterval (double minValue, double maxValue, BorderFlags=IncludeBorders) |
| QwtInterval | normalized () const |
| QwtInterval | inverted () const |
| QwtInterval | limited (double minValue, double maxValue) const |
| bool | operator== (const QwtInterval &) const |
| bool | operator!= (const QwtInterval &) const |
| void | setBorderFlags (BorderFlags) |
| BorderFlags | borderFlags () const |
| double | minValue () const |
| double | maxValue () const |
| double | width () const |
| void | setMinValue (double) |
| void | setMaxValue (double) |
| bool | contains (double value) const |
| bool | intersects (const QwtInterval &) const |
| QwtInterval | intersect (const QwtInterval &) const |
| QwtInterval | unite (const QwtInterval &) const |
| QwtInterval | operator| (const QwtInterval &) const |
| QwtInterval | operator& (const QwtInterval &) const |
| QwtInterval & | operator|= (const QwtInterval &) |
| QwtInterval & | operator&= (const QwtInterval &) |
| QwtInterval | extend (double value) const |
| QwtInterval | operator| (double) const |
| QwtInterval & | operator|= (double) |
| bool | isValid () const |
| bool | isNull () const |
| void | invalidate () |
| QwtInterval | symmetrize (double value) const |
A class representing an interval.
The interval is represented by 2 doubles, the lower and the upper limit.
| typedef QFlags<BorderFlag> QwtInterval::BorderFlags |
Border flags.
Flag indicating if a border is included or excluded
| QwtInterval::QwtInterval | ( | ) | [inline] |
| QwtInterval::QwtInterval | ( | double | minValue, |
| double | maxValue, | ||
| BorderFlags | borderFlags = IncludeBorders |
||
| ) | [inline] |
Constructor
Build an interval with from min/max values
| minValue | Minimum value |
| maxValue | Maximum value |
| borderFlags | Include/Exclude borders |
| QwtInterval::BorderFlags QwtInterval::borderFlags | ( | ) | const [inline] |
| bool QwtInterval::contains | ( | double | value | ) | const |
Test if a value is inside an interval
| value | Value |
| QwtInterval QwtInterval::extend | ( | double | value | ) | 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
| value | Value |
| QwtInterval QwtInterval::intersect | ( | const QwtInterval & | other | ) | const |
Intersect 2 intervals.
| bool QwtInterval::intersects | ( | const QwtInterval & | other | ) | const |
Test if two intervals overlap
| void QwtInterval::invalidate | ( | ) | [inline] |
| QwtInterval QwtInterval::inverted | ( | ) | const |
| bool QwtInterval::isNull | ( | ) | const [inline] |
| bool QwtInterval::isValid | ( | ) | const [inline] |
A interval is valid when minValue() <= maxValue(). In case of QwtInterval::ExcludeBorders it is true when minValue() < maxValue()
| QwtInterval QwtInterval::limited | ( | double | lowerBound, |
| double | upperBound | ||
| ) | const |
Limit the interval, keeping the border modes
| lowerBound | Lower limit |
| upperBound | Upper limit |
| double QwtInterval::maxValue | ( | ) | const [inline] |
| double QwtInterval::minValue | ( | ) | const [inline] |
| QwtInterval QwtInterval::normalized | ( | ) | const |
Normalize the limits of the interval.
If maxValue() < minValue() the limits will be inverted.
| bool QwtInterval::operator!= | ( | const QwtInterval & | other | ) | const [inline] |
Compare two intervals.
| QwtInterval QwtInterval::operator& | ( | const QwtInterval & | interval | ) | const [inline] |
Intersection of two intervals
| QwtInterval & QwtInterval::operator&= | ( | const QwtInterval & | interval | ) |
Intersects this interval with the given interval.
| bool QwtInterval::operator== | ( | const QwtInterval & | other | ) | const [inline] |
Compare two intervals.
| QwtInterval QwtInterval::operator| | ( | const QwtInterval & | interval | ) | const [inline] |
Union of two intervals
| QwtInterval QwtInterval::operator| | ( | double | value | ) | const [inline] |
| QwtInterval & QwtInterval::operator|= | ( | const QwtInterval & | interval | ) |
Unites this interval with the given interval.
| QwtInterval & QwtInterval::operator|= | ( | double | value | ) |
Extend an interval
| value | Value |
| void QwtInterval::setBorderFlags | ( | BorderFlags | borderFlags | ) | [inline] |
| void QwtInterval::setInterval | ( | double | minValue, |
| double | maxValue, | ||
| BorderFlags | borderFlags = IncludeBorders |
||
| ) | [inline] |
Assign the limits of the interval
| minValue | Minimum value |
| maxValue | Maximum value |
| borderFlags | Include/Exclude borders |
| void QwtInterval::setMaxValue | ( | double | maxValue | ) | [inline] |
Assign the upper limit of the interval
| maxValue | Maximum value |
| void QwtInterval::setMinValue | ( | double | minValue | ) | [inline] |
Assign the lower limit of the interval
| minValue | Minimum value |
| QwtInterval QwtInterval::symmetrize | ( | double | value | ) | const |
Adjust the limit that is closer to value, so that value becomes the center of the interval.
| value | Center |
| QwtInterval QwtInterval::unite | ( | const QwtInterval & | other | ) | const |
Unite 2 intervals.
| double QwtInterval::width | ( | ) | const [inline] |
Return the width of an interval The width of invalid intervals is 0.0, otherwise the result is maxValue() - minValue().
1.7.3