372 lines
7.3 KiB
Groff
372 lines
7.3 KiB
Groff
.TH "QwtScaleMap" 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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QwtScaleMap \- A scale map\&.
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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_scale_map\&.h>\fP
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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 "\fBQwtScaleMap\fP ()"
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.br
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.RI "Constructor\&. "
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.ti -1c
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.RI "\fBQwtScaleMap\fP (const \fBQwtScaleMap\fP &)"
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.br
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.RI "Copy constructor\&. "
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.ti -1c
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.RI "\fB~QwtScaleMap\fP ()"
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.br
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.ti -1c
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.RI "\fBQwtScaleMap\fP & \fBoperator=\fP (const \fBQwtScaleMap\fP &)"
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.br
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.RI "Assignment operator\&. "
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.ti -1c
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.RI "void \fBsetTransformation\fP (\fBQwtTransform\fP *)"
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.br
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.ti -1c
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.RI "const \fBQwtTransform\fP * \fBtransformation\fP () const"
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.br
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.RI "Get the transformation\&. "
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.ti -1c
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.RI "void \fBsetPaintInterval\fP (double \fBp1\fP, double \fBp2\fP)"
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.br
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.RI "Specify the borders of the paint device interval\&. "
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.ti -1c
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.RI "void \fBsetScaleInterval\fP (double \fBs1\fP, double \fBs2\fP)"
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.br
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.RI "Specify the borders of the scale interval\&. "
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.ti -1c
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.RI "double \fBtransform\fP (double s) const"
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.br
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.ti -1c
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.RI "double \fBinvTransform\fP (double p) const"
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.br
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.RI "double \fBp1\fP () const"
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.br
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.RI "double \fBp2\fP () const"
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.br
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.RI "double \fBs1\fP () const"
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.br
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.ti -1c
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.RI "double \fBs2\fP () const"
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.br
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.RI "double \fBpDist\fP () const"
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.br
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.ti -1c
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.RI "double \fBsDist\fP () const"
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.br
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.ti -1c
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.RI "bool \fBisInverting\fP () const"
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.br
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.in -1c
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.SS "Static Public Member Functions"
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.in +1c
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.ti -1c
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.RI "static QRectF \fBtransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QRectF &)"
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.br
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.ti -1c
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.RI "static QRectF \fBinvTransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QRectF &)"
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.br
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.ti -1c
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.RI "static QPointF \fBtransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QPointF &)"
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.br
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.ti -1c
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.RI "static QPointF \fBinvTransform\fP (const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QPointF &)"
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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 scale map\&.
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\fBQwtScaleMap\fP offers transformations from the coordinate system of a scale into the linear coordinate system of a paint device and vice versa\&.
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.PP
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Definition at line 26 of file qwt_scale_map\&.h\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "QwtScaleMap::QwtScaleMap ()"
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.PP
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Constructor\&. The scale and paint device intervals are both set to [0,1]\&.
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.PP
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Definition at line 21 of file qwt_scale_map\&.cpp\&.
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.SS "QwtScaleMap::~QwtScaleMap ()"
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Destructor
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.PP
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Definition at line 49 of file qwt_scale_map\&.cpp\&.
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.SH "Member Function Documentation"
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.PP
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.SS "QPointF QwtScaleMap::invTransform (const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QPointF & pos)\fC [static]\fP"
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Transform a rectangle from paint to scale coordinates
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.PP
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\fBParameters\fP
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.RS 4
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\fIxMap\fP X map
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.br
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\fIyMap\fP Y map
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.br
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\fIpos\fP Position in paint coordinates
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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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Position in scale coordinates
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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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\fBtransform()\fP
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.RE
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.PP
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.PP
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Definition at line 187 of file qwt_scale_map\&.cpp\&.
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.SS "QRectF QwtScaleMap::invTransform (const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & rect)\fC [static]\fP"
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Transform a rectangle from paint to scale coordinates
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.PP
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\fBParameters\fP
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.RS 4
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\fIxMap\fP X map
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.br
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\fIyMap\fP Y map
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.br
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\fIrect\fP Rectangle in paint coordinates
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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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Rectangle in scale coordinates
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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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\fBtransform()\fP
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.RE
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.PP
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.PP
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Definition at line 224 of file qwt_scale_map\&.cpp\&.
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.SS "double QwtScaleMap::invTransform (double p) const\fC [inline]\fP"
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Transform an paint device value into a value in the interval of the scale\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIp\fP Value relative to the coordinates of the paint device
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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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Transformed value
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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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\fBtransform()\fP
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.RE
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.PP
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.PP
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Definition at line 154 of file qwt_scale_map\&.h\&.
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.SS "bool QwtScaleMap::isInverting () 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, when ( \fBp1()\fP < \fBp2()\fP ) != ( \fBs1()\fP < \fBs2()\fP )
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.RE
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.PP
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.PP
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Definition at line 164 of file qwt_scale_map\&.h\&.
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.SS "double QwtScaleMap::p1 () 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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First border of the paint interval
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.RE
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.PP
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.PP
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Definition at line 99 of file qwt_scale_map\&.h\&.
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.SS "double QwtScaleMap::p2 () 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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Second border of the paint interval
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.RE
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.PP
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.PP
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Definition at line 107 of file qwt_scale_map\&.h\&.
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.SS "double QwtScaleMap::pDist () 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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qwtAbs(\fBp2()\fP - \fBp1()\fP)
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.RE
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.PP
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.PP
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Definition at line 115 of file qwt_scale_map\&.h\&.
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.SS "double QwtScaleMap::s1 () 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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First border of the scale interval
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.RE
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.PP
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.PP
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Definition at line 83 of file qwt_scale_map\&.h\&.
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.SS "double QwtScaleMap::s2 () 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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Second border of the scale interval
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.RE
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.PP
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.PP
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Definition at line 91 of file qwt_scale_map\&.h\&.
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.SS "double QwtScaleMap::sDist () 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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qwtAbs(\fBs2()\fP - \fBs1()\fP)
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.RE
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.PP
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.PP
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Definition at line 123 of file qwt_scale_map\&.h\&.
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.SS "void QwtScaleMap::setPaintInterval (double p1, double p2)"
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.PP
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Specify the borders of the paint device interval\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIp1\fP first border
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.br
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\fIp2\fP second border
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.RE
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.PP
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.PP
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Definition at line 119 of file qwt_scale_map\&.cpp\&.
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.SS "void QwtScaleMap::setScaleInterval (double s1, double s2)"
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.PP
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Specify the borders of the scale interval\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIs1\fP first border
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.br
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\fIs2\fP second border
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.RE
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.PP
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\fBWarning\fP
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.RS 4
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scales might be aligned to transformation depending boundaries
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.RE
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.PP
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.PP
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Definition at line 100 of file qwt_scale_map\&.cpp\&.
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.SS "void QwtScaleMap::setTransformation (\fBQwtTransform\fP * transform)"
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Initialize the map with a transformation
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.PP
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Definition at line 76 of file qwt_scale_map\&.cpp\&.
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.SS "QPointF QwtScaleMap::transform (const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QPointF & pos)\fC [static]\fP"
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Transform a point from scale to paint coordinates
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.PP
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\fBParameters\fP
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.RS 4
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\fIxMap\fP X map
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.br
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\fIyMap\fP Y map
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.br
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\fIpos\fP Position in scale coordinates
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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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Position in paint coordinates
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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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\fBinvTransform()\fP
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.RE
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.PP
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.PP
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Definition at line 206 of file qwt_scale_map\&.cpp\&.
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.SS "QRectF QwtScaleMap::transform (const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & rect)\fC [static]\fP"
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Transform a rectangle from scale to paint coordinates
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.PP
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\fBParameters\fP
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.RS 4
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\fIxMap\fP X map
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.br
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\fIyMap\fP Y map
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.br
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\fIrect\fP Rectangle in scale coordinates
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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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Rectangle in paint coordinates
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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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\fBinvTransform()\fP
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.RE
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.PP
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.PP
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Definition at line 153 of file qwt_scale_map\&.cpp\&.
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.SS "double QwtScaleMap::transform (double s) const\fC [inline]\fP"
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Transform a point related to the scale interval into an point related to the interval of the paint device
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.PP
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\fBParameters\fP
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.RS 4
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\fIs\fP Value relative to the coordinates of the scale
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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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Transformed value
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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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\fBinvTransform()\fP
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.RE
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.PP
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.PP
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Definition at line 137 of file qwt_scale_map\&.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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