qwt3d_colormap_color.h

/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/
 
#ifndef QWT3D_COLORMAP_COLOR_H
#define QWT3D_COLORMAP_COLOR_H
 
#include "qwt3d_global.h"
#include "qwt3d_color.h"
 
class QwtColorMap;
class QString;
 
enum Qwt3DColorSource
{
    ColorFromX,
    ColorFromY,
    ColorFromZ   // default, preserves the existing behavior
};
 
 
 
class QWT3D_EXPORT Qwt3DColorMapColor : public Qwt3DColor
{
public:
    explicit Qwt3DColorMapColor(const QString& presetName = QString("viridis"), unsigned size = 256);
 
    Qwt3DColorMapColor(::QwtColorMap* colorMap, unsigned size = 256);
 
    ~Qwt3DColorMapColor() override;
 
    RGBA operator()(double x, double y, double z) const override;
    ColorVector& createVector(ColorVector& vec) override;
 
    void setColorMap(::QwtColorMap* map);
    const ::QwtColorMap* colorMap() const;
 
    void setInterval(double min, double max);
    void reset(unsigned size = 256);
    void setAlpha(double a);
 
    void setSourceAxis(Qwt3DColorSource source);
    Qwt3DColorSource sourceAxis() const;
 
    // Returns the preset name passed to the constructor (empty if constructed from QwtColorMap*)
    QString presetName() const;
    // Returns the number of colors in the color vector
    unsigned colorCount() const;
    // Returns the alpha value (default 1.0)
    double alpha() const;
    // Returns true if a manual interval was set via setInterval()
    bool useManualInterval() const;
    // Returns the manual min value (only meaningful when useManualInterval() is true)
    double manualMin() const;
    // Returns the manual max value (only meaningful when useManualInterval() is true)
    double manualMax() const;
 
private:
    void rebuildColorVector(unsigned size);
 
    ::QwtColorMap* m_colorMap;
    ColorVector m_colors;
    double m_manualMin;
    double m_manualMax;
    bool m_useManualInterval;
    double m_alpha;
    QString m_presetName;
    Qwt3DColorSource m_source;
};
 
 
#endif