698 lines
14 KiB
Groff
698 lines
14 KiB
Groff
.TH "QwtInterval" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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QwtInterval \- A class representing an interval\&.
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.SH SYNOPSIS
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.br
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.PP
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.PP
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\fC#include <qwt_interval\&.h>\fP
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.SS "Public Types"
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.in +1c
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.ti -1c
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.RI "enum \fBBorderFlag\fP { \fBIncludeBorders\fP = 0x00, \fBExcludeMinimum\fP = 0x01, \fBExcludeMaximum\fP = 0x02, \fBExcludeBorders\fP = ExcludeMinimum | ExcludeMaximum }"
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.br
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.ti -1c
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.RI "typedef QFlags< \fBBorderFlag\fP > \fBBorderFlags\fP"
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.br
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.RI "Border flags\&. "
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.in -1c
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.SS "Public Member Functions"
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.in +1c
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.ti -1c
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.RI "\fBQwtInterval\fP ()"
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.br
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.RI "Default Constructor\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP (double \fBminValue\fP, double \fBmaxValue\fP, \fBBorderFlags\fP=\fBIncludeBorders\fP)"
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.br
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.ti -1c
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.RI "void \fBsetInterval\fP (double \fBminValue\fP, double \fBmaxValue\fP, \fBBorderFlags\fP=\fBIncludeBorders\fP)"
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.br
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.ti -1c
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.RI "\fBQwtInterval\fP \fBnormalized\fP () const"
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.br
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.RI "Normalize the limits of the interval\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP \fBinverted\fP () const"
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.br
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.ti -1c
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.RI "\fBQwtInterval\fP \fBlimited\fP (double lowerBound, double upperBound) const"
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.br
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.ti -1c
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.RI "bool \fBoperator==\fP (const \fBQwtInterval\fP &) const"
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.br
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.RI "Compare two intervals\&. "
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.ti -1c
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.RI "bool \fBoperator!=\fP (const \fBQwtInterval\fP &) const"
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.br
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.RI "Compare two intervals\&. "
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.ti -1c
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.RI "void \fBsetBorderFlags\fP (\fBBorderFlags\fP)"
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.br
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.ti -1c
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.RI "\fBBorderFlags\fP \fBborderFlags\fP () const"
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.br
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.ti -1c
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.RI "double \fBminValue\fP () const"
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.br
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.ti -1c
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.RI "double \fBmaxValue\fP () const"
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.br
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.ti -1c
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.RI "double \fBwidth\fP () const"
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.br
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.RI "Return the width of an interval\&. "
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.ti -1c
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.RI "long double \fBwidthL\fP () const"
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.br
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.RI "Return the width of an interval as long double\&. "
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.ti -1c
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.RI "void \fBsetMinValue\fP (double)"
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.br
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.ti -1c
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.RI "void \fBsetMaxValue\fP (double)"
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.br
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.ti -1c
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.RI "bool \fBcontains\fP (double value) const"
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.br
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.ti -1c
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.RI "bool \fBcontains\fP (const \fBQwtInterval\fP &) const"
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.br
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.ti -1c
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.RI "bool \fBintersects\fP (const \fBQwtInterval\fP &) const"
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.br
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.RI "Test if two intervals overlap\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP \fBintersect\fP (const \fBQwtInterval\fP &) const"
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.br
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.RI "Intersect 2 intervals\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP \fBunite\fP (const \fBQwtInterval\fP &) const"
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.br
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.RI "Unite 2 intervals\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP \fBoperator|\fP (const \fBQwtInterval\fP &) const"
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.br
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.ti -1c
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.RI "\fBQwtInterval\fP \fBoperator&\fP (const \fBQwtInterval\fP &) const"
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.br
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.RI "Intersection of two intervals\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP & \fBoperator|=\fP (const \fBQwtInterval\fP &)"
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.br
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.RI "Unite this interval with the given interval\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP & \fBoperator&=\fP (const \fBQwtInterval\fP &)"
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.br
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.RI "Intersect this interval with the given interval\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP \fBextend\fP (double value) const"
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.br
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.RI "Extend the interval\&. "
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.ti -1c
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.RI "\fBQwtInterval\fP \fBoperator|\fP (double) const"
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.br
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.ti -1c
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.RI "\fBQwtInterval\fP & \fBoperator|=\fP (double)"
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.br
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.ti -1c
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.RI "bool \fBisValid\fP () const"
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.br
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.ti -1c
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.RI "bool \fBisNull\fP () const"
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.br
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.ti -1c
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.RI "void \fBinvalidate\fP ()"
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.br
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.ti -1c
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.RI "\fBQwtInterval\fP \fBsymmetrize\fP (double value) const"
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.br
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.in -1c
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.SH "Detailed Description"
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.PP
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A class representing an interval\&.
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The interval is represented by 2 doubles, the lower and the upper limit\&.
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.PP
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Definition at line 22 of file qwt_interval\&.h\&.
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.SH "Member Typedef Documentation"
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.PP
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.SS "typedef QFlags<\fBBorderFlag\fP > \fBQwtInterval::BorderFlags\fP"
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.PP
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Border flags\&. An ORed combination of \fBBorderFlag\fP values\&.
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.PP
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Definition at line 45 of file qwt_interval\&.h\&.
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.SH "Member Enumeration Documentation"
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.PP
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.SS "enum \fBQwtInterval::BorderFlag\fP"
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Flag indicating if a border is included or excluded
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetBorderFlags()\fP, \fBborderFlags()\fP
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.RE
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.PP
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.PP
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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fIIncludeBorders \fP\fP
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Min/Max values are inside the interval\&.
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.TP
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\fB\fIExcludeMinimum \fP\fP
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Min value is not included in the interval\&.
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.TP
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\fB\fIExcludeMaximum \fP\fP
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Max value is not included in the interval\&.
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.TP
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\fB\fIExcludeBorders \fP\fP
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Min/Max values are not included in the interval\&.
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.PP
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Definition at line 29 of file qwt_interval\&.h\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "QwtInterval::QwtInterval ()\fC [inline]\fP"
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.PP
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Default Constructor\&. Creates an invalid interval [0\&.0, -1\&.0]
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetInterval()\fP, \fBisValid()\fP
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.RE
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.PP
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.PP
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Definition at line 112 of file qwt_interval\&.h\&.
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.SS "QwtInterval::QwtInterval (double minValue, double maxValue, \fBBorderFlags\fP borderFlags = \fC\fBIncludeBorders\fP\fP)\fC [inline]\fP"
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Constructor
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.PP
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Build an interval with from min/max values
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.PP
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\fBParameters\fP
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.RS 4
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\fIminValue\fP Minimum value
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.br
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\fImaxValue\fP Maximum value
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.br
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\fIborderFlags\fP Include/Exclude borders
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.RE
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.PP
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.PP
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Definition at line 128 of file qwt_interval\&.h\&.
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.SH "Member Function Documentation"
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.PP
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.SS "\fBQwtInterval::BorderFlags\fP QwtInterval::borderFlags () const\fC [inline]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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Border flags
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetBorderFlags()\fP
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.RE
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.PP
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.PP
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Definition at line 166 of file qwt_interval\&.h\&.
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.SS "bool QwtInterval::contains (const \fBQwtInterval\fP & interval) const"
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Test if an interval is inside an interval
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.PP
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\fBParameters\fP
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.RS 4
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\fIinterval\fP Interval
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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true, if interval lies inside the boundaries
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.RE
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.PP
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.PP
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Definition at line 90 of file qwt_interval\&.cpp\&.
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.SS "bool QwtInterval::contains (double value) const"
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Test if a value is inside an interval
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalue\fP Value
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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true, if value lies inside the boundaries
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.RE
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.PP
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.PP
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Definition at line 67 of file qwt_interval\&.cpp\&.
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.SS "\fBQwtInterval\fP QwtInterval::extend (double value) const"
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.PP
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Extend the interval\&. If value is below \fBminValue()\fP, value becomes the lower limit\&. If value is above \fBmaxValue()\fP, value becomes the upper limit\&.
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.PP
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\fBextend()\fP has no effect for invalid intervals
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalue\fP Value
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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extended interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBisValid()\fP
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.RE
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.PP
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.PP
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Definition at line 363 of file qwt_interval\&.cpp\&.
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.SS "\fBQwtInterval\fP QwtInterval::intersect (const \fBQwtInterval\fP & other) const"
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.PP
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Intersect 2 intervals\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval to be intersect with
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Intersection
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.RE
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.PP
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.PP
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Definition at line 186 of file qwt_interval\&.cpp\&.
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.SS "bool QwtInterval::intersects (const \fBQwtInterval\fP & other) const"
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.PP
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Test if two intervals overlap\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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True, when the intervals are intersecting
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.RE
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.PP
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.PP
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Definition at line 277 of file qwt_interval\&.cpp\&.
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.SS "void QwtInterval::invalidate ()\fC [inline]\fP"
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Invalidate the interval
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.PP
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The limits are set to interval [0\&.0, -1\&.0]
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.PP
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\fBSee also\fP
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.RS 4
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\fBisValid()\fP
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.RE
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.PP
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.PP
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Definition at line 325 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP QwtInterval::inverted () const"
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Invert the limits of the interval
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.PP
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\fBReturns\fP
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.RS 4
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Inverted interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBnormalized()\fP
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.RE
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.PP
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.PP
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Definition at line 48 of file qwt_interval\&.cpp\&.
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.SS "bool QwtInterval::isNull () const\fC [inline]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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true, if \fBisValid()\fP && (\fBminValue()\fP >= \fBmaxValue()\fP)
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.RE
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.PP
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.PP
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Definition at line 314 of file qwt_interval\&.h\&.
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.SS "bool QwtInterval::isValid () const\fC [inline]\fP"
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A interval is valid when \fBminValue()\fP <= \fBmaxValue()\fP\&. In case of \fBQwtInterval::ExcludeBorders\fP it is true when \fBminValue()\fP < \fBmaxValue()\fP
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.PP
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\fBReturns\fP
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.RS 4
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True, when the interval is valid
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.RE
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.PP
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.PP
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Definition at line 210 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP QwtInterval::limited (double lowerBound, double upperBound) const"
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Limit the interval, keeping the border modes
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.PP
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\fBParameters\fP
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.RS 4
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\fIlowerBound\fP Lower limit
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.br
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\fIupperBound\fP Upper limit
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Limited interval
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.RE
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.PP
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.PP
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Definition at line 336 of file qwt_interval\&.cpp\&.
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.SS "double QwtInterval::maxValue () const\fC [inline]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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Upper limit of the interval
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.RE
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.PP
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.PP
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Definition at line 198 of file qwt_interval\&.h\&.
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.SS "double QwtInterval::minValue () const\fC [inline]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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Lower limit of the interval
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.RE
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.PP
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.PP
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Definition at line 192 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP QwtInterval::normalized () const"
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.PP
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Normalize the limits of the interval\&. If \fBmaxValue()\fP < \fBminValue()\fP the limits will be inverted\&.
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.PP
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\fBReturns\fP
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.RS 4
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Normalized interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBisValid()\fP, \fBinverted()\fP
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.RE
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.PP
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.PP
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Definition at line 29 of file qwt_interval\&.cpp\&.
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.SS "bool QwtInterval::operator!= (const \fBQwtInterval\fP & other) const\fC [inline]\fP"
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.PP
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Compare two intervals\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval to compare with
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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True, when this and other are not equal
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.RE
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.PP
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.PP
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Definition at line 296 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP QwtInterval::operator& (const \fBQwtInterval\fP & other) const\fC [inline]\fP"
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.PP
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Intersection of two intervals\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval to intersect with
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Intersection of this and other
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBintersect()\fP
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.RE
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.PP
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.PP
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Definition at line 258 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP & QwtInterval::operator&= (const \fBQwtInterval\fP & other)"
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.PP
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Intersect this interval with the given interval\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval to be intersected with
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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This interval
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.RE
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.PP
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.PP
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Definition at line 265 of file qwt_interval\&.cpp\&.
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.SS "bool QwtInterval::operator== (const \fBQwtInterval\fP & other) const\fC [inline]\fP"
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.PP
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Compare two intervals\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval to compare with
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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True, when this and other are equal
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.RE
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.PP
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.PP
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Definition at line 284 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP QwtInterval::operator| (const \fBQwtInterval\fP & other) const\fC [inline]\fP"
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Union of two intervals
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval to unite with
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Union of this and other
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBunite()\fP
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.RE
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.PP
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.PP
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Definition at line 272 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP QwtInterval::operator| (double value) const\fC [inline]\fP"
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Extend an interval
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalue\fP Value
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Extended interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBextend()\fP
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.RE
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.PP
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.PP
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Definition at line 308 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP & QwtInterval::operator|= (const \fBQwtInterval\fP & other)"
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.PP
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Unite this interval with the given interval\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Interval to be united with
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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This interval
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.RE
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.PP
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.PP
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Definition at line 253 of file qwt_interval\&.cpp\&.
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.SS "\fBQwtInterval\fP & QwtInterval::operator|= (double value)"
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Extend an interval
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalue\fP Value
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Reference of the extended interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBextend()\fP
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.RE
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.PP
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.PP
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Definition at line 380 of file qwt_interval\&.cpp\&.
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.SS "void QwtInterval::setBorderFlags (\fBBorderFlags\fP borderFlags)\fC [inline]\fP"
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Change the border flags
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.PP
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\fBParameters\fP
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.RS 4
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\fIborderFlags\fP Or'd BorderMode flags
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBborderFlags()\fP
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.RE
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.PP
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.PP
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Definition at line 157 of file qwt_interval\&.h\&.
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.SS "void QwtInterval::setInterval (double minValue, double maxValue, \fBBorderFlags\fP borderFlags = \fC\fBIncludeBorders\fP\fP)\fC [inline]\fP"
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Assign the limits of the interval
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.PP
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\fBParameters\fP
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.RS 4
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\fIminValue\fP Minimum value
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.br
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\fImaxValue\fP Maximum value
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.br
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\fIborderFlags\fP Include/Exclude borders
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.RE
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.PP
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.PP
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Definition at line 143 of file qwt_interval\&.h\&.
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.SS "void QwtInterval::setMaxValue (double maxValue)\fC [inline]\fP"
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Assign the upper limit of the interval
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.PP
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\fBParameters\fP
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.RS 4
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\fImaxValue\fP Maximum value
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.RE
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.PP
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.PP
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Definition at line 186 of file qwt_interval\&.h\&.
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.SS "void QwtInterval::setMinValue (double minValue)\fC [inline]\fP"
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Assign the lower limit of the interval
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.PP
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\fBParameters\fP
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.RS 4
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\fIminValue\fP Minimum value
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.RE
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.PP
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.PP
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Definition at line 176 of file qwt_interval\&.h\&.
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.SS "\fBQwtInterval\fP QwtInterval::symmetrize (double value) const"
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Adjust the limit that is closer to value, so that value becomes the center of the interval\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalue\fP Center
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Interval with value as center
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.RE
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.PP
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.PP
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Definition at line 317 of file qwt_interval\&.cpp\&.
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.SS "double QwtInterval::width () const\fC [inline]\fP"
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.PP
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Return the width of an interval\&. The width of invalid intervals is 0\&.0, otherwise the result is \fBmaxValue()\fP - \fBminValue()\fP\&.
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.PP
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\fBReturns\fP
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.RS 4
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Interval width
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBisValid()\fP
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.RE
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.PP
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.PP
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Definition at line 227 of file qwt_interval\&.h\&.
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.SS "long double QwtInterval::widthL () const\fC [inline]\fP"
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.PP
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Return the width of an interval as long double\&. The width of invalid intervals is 0\&.0, otherwise the result is \fBmaxValue()\fP - \fBminValue()\fP\&.
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.PP
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\fBReturns\fP
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.RS 4
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Interval width
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBisValid()\fP
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.RE
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.PP
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.PP
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Definition at line 241 of file qwt_interval\&.h\&.
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
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