.TH "QwtScaleMap" 3 "Fri Apr 15 2011" "Version 6.0.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtScaleMap \- 
.PP
A scale map.  

.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_scale_map.h>\fP
.SS "Public Member Functions"

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.RI "\fBQwtScaleMap\fP ()"
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.RI "\fBQwtScaleMap\fP (const \fBQwtScaleMap\fP &)"
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.RI "\fB~QwtScaleMap\fP ()"
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.RI "\fBQwtScaleMap\fP & \fBoperator=\fP (const \fBQwtScaleMap\fP &)"
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.RI "void \fBsetTransformation\fP (\fBQwtScaleTransformation\fP *)"
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.RI "const \fBQwtScaleTransformation\fP * \fBtransformation\fP () const "
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.RI "void \fBsetPaintInterval\fP (double p1, double p2)"
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.RI "void \fBsetScaleInterval\fP (double s1, double s2)"
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.RI "double \fBtransform\fP (double s) const "
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.RI "double \fBinvTransform\fP (double p) const "
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.RI "double \fBp1\fP () const "
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.RI "double \fBp2\fP () const "
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.RI "double \fBs1\fP () const "
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.RI "double \fBs2\fP () const "
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.RI "double \fBpDist\fP () const "
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.RI "double \fBsDist\fP () const "
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.RI "bool \fBisInverting\fP () const "
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.SS "Static Public Member Functions"

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.RI "static QRectF \fBtransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QRectF &)"
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.RI "static QRectF \fBinvTransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QRectF &)"
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.RI "static QPointF \fBtransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QPointF &)"
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.RI "static QPointF \fBinvTransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QPointF &)"
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.SS "Public Attributes"

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.RI "QT_STATIC_CONST double \fBLogMin\fP = 1.0e-150"
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.RI "QT_STATIC_CONST double \fBLogMax\fP = 1.0e150"
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.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"
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.SS "QwtScaleMap::QwtScaleMap ()"
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Constructor. The scale and paint device intervals are both set to [0,1]. 
.SS "QwtScaleMap::QwtScaleMap (const \fBQwtScaleMap\fP &other)"
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Copy constructor. 
.SS "QwtScaleMap::~QwtScaleMap ()"Destructor 
.SH "Member Function Documentation"
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.SS "double QwtScaleMap::invTransform (doublep) const\fC [inline]\fP"Transform an paint device value into a value in the interval of the scale.
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\fBParameters:\fP
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\fIp\fP Value relative to the coordinates of the paint device 
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\fBSee also:\fP
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\fBtransform()\fP 
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.SS "QPointF QwtScaleMap::invTransform (const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QPointF &pos)\fC [static]\fP"Transform a rectangle from paint to scale coordinates
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\fBParameters:\fP
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\fIxMap\fP X map 
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\fIyMap\fP Y map 
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\fIpos\fP Position in paint coordinates 
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\fBReturns:\fP
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Position in scale coordinates 
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\fBSee also:\fP
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\fBtransform()\fP 
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.SS "QRectF QwtScaleMap::invTransform (const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &rect)\fC [static]\fP"Transform a rectangle from paint to scale coordinates
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\fBParameters:\fP
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\fIxMap\fP X map 
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\fIyMap\fP Y map 
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\fIrect\fP Rectangle in paint coordinates 
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\fBReturns:\fP
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Rectangle in scale coordinates 
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\fBSee also:\fP
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\fBtransform()\fP 
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.SS "bool QwtScaleMap::isInverting () const\fC [inline]\fP"\fBReturns:\fP
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True, when ( \fBp1()\fP < \fBp2()\fP ) != ( \fBs1()\fP < \fBs2()\fP ) 
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.SS "\fBQwtScaleMap\fP & QwtScaleMap::operator= (const \fBQwtScaleMap\fP &other)"
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Assignment operator. 
.SS "double QwtScaleMap::p1 () const\fC [inline]\fP"\fBReturns:\fP
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First border of the paint interval 
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.SS "double QwtScaleMap::p2 () const\fC [inline]\fP"\fBReturns:\fP
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Second border of the paint interval 
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.SS "double QwtScaleMap::pDist () const\fC [inline]\fP"\fBReturns:\fP
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qwtAbs(\fBp2()\fP - \fBp1()\fP) 
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.SS "double QwtScaleMap::s1 () const\fC [inline]\fP"\fBReturns:\fP
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First border of the scale interval 
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.SS "double QwtScaleMap::s2 () const\fC [inline]\fP"\fBReturns:\fP
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Second border of the scale interval 
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.SS "double QwtScaleMap::sDist () const\fC [inline]\fP"\fBReturns:\fP
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qwtAbs(\fBs2()\fP - \fBs1()\fP) 
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.SS "void QwtScaleMap::setPaintInterval (doublep1, doublep2)"
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Specify the borders of the paint device interval. \fBParameters:\fP
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\fIp1\fP first border 
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\fIp2\fP second border 
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.SS "void QwtScaleMap::setScaleInterval (doubles1, doubles2)"
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Specify the borders of the scale interval. \fBParameters:\fP
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\fIs1\fP first border 
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\fIs2\fP second border 
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\fBWarning:\fP
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logarithmic scales might be aligned to [LogMin, LogMax] 
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.SS "void QwtScaleMap::setTransformation (\fBQwtScaleTransformation\fP *transformation)"Initialize the map with a transformation 
.SS "QPointF QwtScaleMap::transform (const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QPointF &pos)\fC [static]\fP"Transform a point from scale to paint coordinates
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\fBParameters:\fP
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\fIxMap\fP X map 
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\fIyMap\fP Y map 
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\fIpos\fP Position in scale coordinates 
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\fBReturns:\fP
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Position in paint coordinates
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\fBSee also:\fP
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\fBinvTransform()\fP 
.RE
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.SS "double 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
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\fBParameters:\fP
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\fIs\fP Value relative to the coordinates of the scale 
.RE
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.SS "QRectF QwtScaleMap::transform (const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &rect)\fC [static]\fP"Transform a rectangle from scale to paint coordinates
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\fBParameters:\fP
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\fIxMap\fP X map 
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\fIyMap\fP Y map 
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\fIrect\fP Rectangle in scale coordinates 
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\fBReturns:\fP
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Rectangle in paint coordinates
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\fBSee also:\fP
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\fBinvTransform()\fP 
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.SS "const \fBQwtScaleTransformation\fP * QwtScaleMap::transformation () const"
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Get the transformation. 
.SH "Member Data Documentation"
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.SS "QT_STATIC_CONST_IMPL double \fBQwtScaleMap::LogMax\fP = 1.0e150"
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Largest allowed value for logarithmic scales: 1.0e150. 
.SS "QT_STATIC_CONST_IMPL double \fBQwtScaleMap::LogMin\fP = 1.0e-150"
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Smallest allowed value for logarithmic scales: 1.0e-150. 

.SH "Author"
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