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.TH "QwtScaleMap" 3 "Mon Aug 1 2011" "Version 5.2.2" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtScaleMap \-
.PP
A scale map.
.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_scale_map.h>\fP
.SS "Public Member Functions"
.in +1c
.ti -1c
.RI "double \fBinvTransform\fP (double i) const "
.br
.ti -1c
.RI "\fBQwtScaleMap\fP & \fBoperator=\fP (const \fBQwtScaleMap\fP &)"
.br
.ti -1c
.RI "double \fBp1\fP () const "
.br
.ti -1c
.RI "double \fBp2\fP () const "
.br
.ti -1c
.RI "double \fBpDist\fP () const "
.br
.ti -1c
.RI "\fBQwtScaleMap\fP (const \fBQwtScaleMap\fP &)"
.br
.ti -1c
.RI "\fBQwtScaleMap\fP ()"
.br
.ti -1c
.RI "double \fBs1\fP () const "
.br
.ti -1c
.RI "double \fBs2\fP () const "
.br
.ti -1c
.RI "double \fBsDist\fP () const "
.br
.ti -1c
.RI "void \fBsetPaintInterval\fP (int p1, int p2)"
.br
.ti -1c
.RI "void \fBsetPaintXInterval\fP (double p1, double p2)"
.br
.ti -1c
.RI "void \fBsetScaleInterval\fP (double s1, double s2)"
.br
.ti -1c
.RI "void \fBsetTransformation\fP (\fBQwtScaleTransformation\fP *)"
.br
.ti -1c
.RI "int \fBtransform\fP (double x) const "
.br
.ti -1c
.RI "const \fBQwtScaleTransformation\fP * \fBtransformation\fP () const "
.br
.ti -1c
.RI "double \fBxTransform\fP (double x) const "
.br
.ti -1c
.RI "\fB~QwtScaleMap\fP ()"
.br
.in -1c
.SS "Public Attributes"
.in +1c
.ti -1c
.RI "QT_STATIC_CONST double \fBLogMax\fP = 1.0e150"
.br
.ti -1c
.RI "QT_STATIC_CONST double \fBLogMin\fP = 1.0e-150"
.br
.in -1c
.SH "Detailed Description"
.PP
A scale map.
\fBQwtScaleMap\fP offers transformations from a scale into a paint interval and vice versa.
.SH "Constructor & Destructor Documentation"
.PP
.SS "QwtScaleMap::QwtScaleMap ()"
.PP
Constructor. The scale and paint device intervals are both set to [0,1].
.SS "QwtScaleMap::QwtScaleMap (const \fBQwtScaleMap\fP &other)"
.PP
Copy constructor.
.SS "QwtScaleMap::~QwtScaleMap ()"Destructor
.SH "Member Function Documentation"
.PP
.SS "double QwtScaleMap::invTransform (doublep) const\fC [inline]\fP"Transform an paint device value into a value in the interval of the scale.
.PP
\fBParameters:\fP
.RS 4
\fIp\fP Value relative to the coordinates of the paint device
.RE
.PP
\fBSee also:\fP
.RS 4
\fBtransform()\fP
.RE
.PP
.SS "\fBQwtScaleMap\fP & QwtScaleMap::operator= (const \fBQwtScaleMap\fP &other)"
.PP
Assignment operator.
.SS "double QwtScaleMap::p1 () const\fC [inline]\fP"\fBReturns:\fP
.RS 4
First border of the paint interval
.RE
.PP
.SS "double QwtScaleMap::p2 () const\fC [inline]\fP"\fBReturns:\fP
.RS 4
Second border of the paint interval
.RE
.PP
.SS "double QwtScaleMap::pDist () const\fC [inline]\fP"\fBReturns:\fP
.RS 4
qwtAbs(\fBp2()\fP - \fBp1()\fP)
.RE
.PP
.SS "double QwtScaleMap::s1 () const\fC [inline]\fP"\fBReturns:\fP
.RS 4
First border of the scale interval
.RE
.PP
.SS "double QwtScaleMap::s2 () const\fC [inline]\fP"\fBReturns:\fP
.RS 4
Second border of the scale interval
.RE
.PP
.SS "double QwtScaleMap::sDist () const\fC [inline]\fP"\fBReturns:\fP
.RS 4
qwtAbs(\fBs2()\fP - \fBs1()\fP)
.RE
.PP
.SS "void QwtScaleMap::setPaintInterval (intp1, intp2)"
.PP
Specify the borders of the paint device interval. \fBParameters:\fP
.RS 4
\fIp1\fP first border
.br
\fIp2\fP second border
.RE
.PP
.SS "void QwtScaleMap::setPaintXInterval (doublep1, doublep2)"
.PP
Specify the borders of the paint device interval. \fBParameters:\fP
.RS 4
\fIp1\fP first border
.br
\fIp2\fP second border
.RE
.PP
.SS "void QwtScaleMap::setScaleInterval (doubles1, doubles2)"
.PP
Specify the borders of the scale interval. \fBParameters:\fP
.RS 4
\fIs1\fP first border
.br
\fIs2\fP second border
.RE
.PP
\fBWarning:\fP
.RS 4
logarithmic scales might be aligned to [LogMin, LogMax]
.RE
.PP
.SS "void QwtScaleMap::setTransformation (\fBQwtScaleTransformation\fP *transformation)"Initialize the map with a transformation
.SS "int QwtScaleMap::transform (doubles) const\fC [inline]\fP"Transform a point related to the scale interval into an point related to the interval of the paint device and round it to an integer. (In Qt <= 3.x paint devices are integer based. )
.PP
\fBParameters:\fP
.RS 4
\fIs\fP Value relative to the coordinates of the scale
.RE
.PP
\fBSee also:\fP
.RS 4
\fBxTransform()\fP
.RE
.PP
.SS "const \fBQwtScaleTransformation\fP * QwtScaleMap::transformation () const"
.PP
Get the transformation.
.SS "double QwtScaleMap::xTransform (doubles) const\fC [inline]\fP"Transform a point related to the scale interval into an point related to the interval of the paint device
.PP
\fBParameters:\fP
.RS 4
\fIs\fP Value relative to the coordinates of the scale
.RE
.PP
.SH "Author"
.PP
Generated automatically by Doxygen for Qwt User's Guide from the source code.
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