Qwt3D::StandardColor Class Reference

Standard color model for Plot3D - implements the data driven operator()(double x, double y, double z) More...

#include <qwt3d_color.h>

Inheritance diagram for Qwt3D::StandardColor:

Classes
class	PrivateData

Public Member Functions
	StandardColor (Qwt3D::Plot3D *data, unsigned size=100)
	Constructs a StandardColor object.
Qwt3D::RGBA	operator() (double x, double y, double z) const override
	Returns the color for a given z value.
void	setColorVector (Qwt3D::ColorVector const &cv)
	Assigns a new ColorVector.
void	reset (unsigned size=100)
void	setAlpha (double a)
	Sets the alpha value for all colors.
Qwt3D::ColorVector &	createVector (Qwt3D::ColorVector &vec) override
	Creates color vector for ColorLegend - essentially a copy from the internal vector.
void	setPreset (const QString &presetName, unsigned size=100)
	Set colormap from a preset name.
Public Member Functions inherited from Qwt3D::Color
virtual Qwt3D::RGBA	operator() (Qwt3D::Triple const &t) const
void	destroy () const

Detailed Description

Standard color model for Plot3D - implements the data driven operator()(double x, double y, double z)

The class has a ColorVector representing z values, which will be used by operator()(double x, double y, double z)

Constructor & Destructor Documentation

StandardColor()

StandardColor::StandardColor(Plot3D *data, unsigned size) StandardColor::reset void(unsigned size) ( Qwt3D::Plot3D *  data, unsigned  size = 100  )

explicit

Constructs a StandardColor object.

Parameters

data	Plot3D data source for color mapping
size	Number of color entries in the color vector

Creates a standard color mapping with the specified size and resets the color vector to default gradient values.

Resets the color vector to the default colormap

Parameters

size	Number of color entries to generate

Creates a color vector of the given size sampled from the viridis colormap, the modern perceptually-uniform default.

Member Function Documentation

createVector()

Qwt3D::ColorVector & StandardColor::createVector ( Qwt3D::ColorVector &  vec )

overridevirtual

Creates color vector for ColorLegend - essentially a copy from the internal vector.

Parameters

vec	The vector to fill

Returns

Reference to the filled color vector

Reimplemented from Qwt3D::Color.

operator()()

RGBA StandardColor::operator() ( double  x, double  y, double  z  ) const

overridevirtual

Returns the color for a given z value.

Parameters

z	The z coordinate value for color lookup

Returns

RGBA color corresponding to the z value

Maps the z value to a color index based on the data hull's z range.

Implements Qwt3D::Color.

setAlpha()

void StandardColor::setAlpha

(

double

a

)

Sets the alpha value for all colors.

Parameters

a	Alpha value (0.0 to 1.0)

setColorVector()

void StandardColor::setColorVector

(

Qwt3D::ColorVector const &

cv

)

Assigns a new ColorVector.

Parameters

cv	The new color vector (also overwrites the constructor's size argument)

setPreset()

void StandardColor::setPreset	(	const QString &	presetName,
		unsigned	size = 100
	)

Set colormap from a preset name.

Parameters

presetName	Name of the colormap preset (e.g. "viridis", "plasma", "jet")
size	Number of color stops to sample from the colormap

Uses QwtColorMapPreset to create a QwtLinearColorMap and samples it at the specified number of points to fill the internal color vector.

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The documentation for this class was generated from the following files:

• /home/runner/work/QWT/QWT/src/plot3d/qwt3d_color.h
• /home/runner/work/QWT/QWT/src/plot3d/qwt3d_color.cpp