QwtScaleMap - A scale map.

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Version 6.1.4                                    Wed Jan 2 2019                                   QwtScaleMap(3)

QwtScaleMap::QwtScaleMap()
       Constructor. The scale and paint device intervals are both set to [0,1].

   QwtScaleMap::~QwtScaleMap()
       Destructor

       A scale map.

       QwtScaleMap offers transformations from the coordinate system of a scale into the linear coordinate
       system of a paint device and vice versa.

doubleQwtScaleMap::invTransform(doublep)const[inline]
       Transform an paint device value into a value in the interval of the scale.

       Parameters:p Value relative to the coordinates of the paint device

       Returns:
           Transformed value

       Seealso:transform()QRectFQwtScaleMap::invTransform(constQwtScaleMap&xMap,constQwtScaleMap&yMap,constQRectF&rect)[static]
       Transform a rectangle from paint to scale coordinates

       Parameters:xMap X map
           yMap Y map
           rect Rectangle in paint coordinates

       Returns:
           Rectangle in scale coordinates

       Seealso:transform()QPointFQwtScaleMap::invTransform(constQwtScaleMap&xMap,constQwtScaleMap&yMap,constQPointF&pos)[static]
       Transform a rectangle from paint to scale coordinates

       Parameters:xMap X map
           yMap Y map
           pos Position in paint coordinates

       Returns:
           Position in scale coordinates

       Seealso:transform()boolQwtScaleMap::isInverting()const[inline]Returns:
           True, when ( p1() < p2() ) != ( s1() < s2() )

   doubleQwtScaleMap::p1()const[inline]Returns:
           First border of the paint interval

   doubleQwtScaleMap::p2()const[inline]Returns:
           Second border of the paint interval

   doubleQwtScaleMap::pDist()const[inline]Returns:
           qwtAbs(p2() - p1())

   doubleQwtScaleMap::s1()const[inline]Returns:
           First border of the scale interval

   doubleQwtScaleMap::s2()const[inline]Returns:
           Second border of the scale interval

   doubleQwtScaleMap::sDist()const[inline]Returns:
           qwtAbs(s2() - s1())

   voidQwtScaleMap::setPaintInterval(doublep1,doublep2)
       Specify the borders of the paint device interval.

       Parameters:p1 first border
           p2 second border

   voidQwtScaleMap::setScaleInterval(doubles1,doubles2)
       Specify the borders of the scale interval.

       Parameters:s1 first border
           s2 second border

       Warning:
           scales might be aligned to transformation depending boundaries

   voidQwtScaleMap::setTransformation(QwtTransform*transform)
       Initialize the map with a transformation

   doubleQwtScaleMap::transform(doubles)const[inline]
       Transform a point related to the scale interval into an point related to the interval of the paint device

       Parameters:s Value relative to the coordinates of the scale

       Returns:
           Transformed value

       Seealso:invTransform()QRectFQwtScaleMap::transform(constQwtScaleMap&xMap,constQwtScaleMap&yMap,constQRectF&rect)[static]
       Transform a rectangle from scale to paint coordinates

       Parameters:xMap X map
           yMap Y map
           rect Rectangle in scale coordinates

       Returns:
           Rectangle in paint coordinates

       Seealso:invTransform()QPointFQwtScaleMap::transform(constQwtScaleMap&xMap,constQwtScaleMap&yMap,constQPointF&pos)[static]
       Transform a point from scale to paint coordinates

       Parameters:xMap X map
           yMap Y map
           pos Position in scale coordinates

       Returns:
           Position in paint coordinates

       Seealso:invTransform()

       QwtScaleMap - A scale map.

       #include <qwt_scale_map.h>

   PublicMemberFunctionsQwtScaleMap ()
           Constructor.
       QwtScaleMap (const QwtScaleMap &)
           Copy constructor.
       ~QwtScaleMap ()
       QwtScaleMap & operator= (const QwtScaleMap &)
           Assignment operator.
       void setTransformation (QwtTransform *)
       const QwtTransform * transformation () const
           Get the transformation.
       void setPaintInterval (double p1, double p2)
           Specify the borders of the paint device interval.
       void setScaleInterval (double s1, double s2)
           Specify the borders of the scale interval.
       double transform (double s) const
       double invTransform (double p) const
       double p1 () const
       double p2 () const
       double s1 () const
       double s2 () const
       double pDist () const
       double sDist () const
       bool isInverting () const

   StaticPublicMemberFunctions
       static QRectF transform (const QwtScaleMap &, const QwtScaleMap &, const QRectF &)
       static QRectF invTransform (const QwtScaleMap &, const QwtScaleMap &, const QRectF &)
       static QPointF transform (const QwtScaleMap &, const QwtScaleMap &, const QPointF &)
       static QPointF invTransform (const QwtScaleMap &, const QwtScaleMap &, const QPointF &)