Struct QAccelPlot::AxisMapping¶

ClassList > QAccelPlot > AxisMapping

Snapshot of an axis viewport that maps between data values and pixel positions. More...

#include <AxisMapping.hpp>

Public Attributes¶

Type	Name
bool	flipped = `{false}` Whether pixel positions grow against data values, as on vertical axes.
bool	logarithmic = `{false}` Whether values are mapped through `log10` .
double	origin = `{0.0}` Viewport minimum in mapped space: `log10` on logarithmic axes.
double	span = `{1.0}` Viewport extent in mapped space; negative for an inverted viewport.
bool	valid = `{false}` False for a collapsed, nonfinite, or nonpositive logarithmic viewport.

Public Functions¶

Type	Name
double	toCoord (double pixel, double length) noexcept const Maps a pixel position along an axis of__length pixels back to a data-space value.
double	toMapped (double value) noexcept const Returns value in mapped space.
double	toPixel (double value, double length) noexcept const Maps a data-space value to a pixel position along an axis of__length pixels.

Detailed Description¶

Obtained from Axis::mapping(). It is the single implementation of the axis mapping, shared by Axis::coordToPixel(), Axis::pixelToCoord(), and the inspection queries.

Public Attributes Documentation¶

variable flipped¶

Whether pixel positions grow against data values, as on vertical axes.

bool QAccelPlot::AxisMapping::flipped;

variable logarithmic¶

Whether values are mapped through log10 .

bool QAccelPlot::AxisMapping::logarithmic;

variable origin¶

Viewport minimum in mapped space: log10 on logarithmic axes.

double QAccelPlot::AxisMapping::origin;

variable span¶

Viewport extent in mapped space; negative for an inverted viewport.

double QAccelPlot::AxisMapping::span;

variable valid¶

False for a collapsed, nonfinite, or nonpositive logarithmic viewport.

bool QAccelPlot::AxisMapping::valid;

Public Functions Documentation¶

function toCoord¶

Maps a pixel position along an axis of__length pixels back to a data-space value.

double QAccelPlot::AxisMapping::toCoord (
    double pixel,
    double length
) noexcept const

function toMapped¶

Returns value in mapped space.

double QAccelPlot::AxisMapping::toMapped (
    double value
) noexcept const

function toPixel¶

Maps a data-space value to a pixel position along an axis of__length pixels.

double QAccelPlot::AxisMapping::toPixel (
    double value,
    double length
) noexcept const

The documentation for this class was generated from the following file QAccelPlot/src/QAccelPlot/axis/AxisMapping.hpp