qwt3d_autoscaler.h

#ifndef QWT3D_AUTOSCALER_H
#define QWT3D_AUTOSCALER_H
 
#include <vector>
#include "qwt3d_global.h"
#include "qwt3d_autoptr.h"
 
 
 
class QWT3D_EXPORT Qwt3DAutoScaler
{
    friend class Qwt3DClonePtr< Qwt3DAutoScaler >;
 
protected:
    virtual Qwt3DAutoScaler* clone() const                                        = 0;
    virtual int execute(double& a, double& b, double start, double stop, int ivals) = 0;
    virtual ~Qwt3DAutoScaler()
    {
    }
 
private:
    void destroy() const
    {
        delete this;
    }
};
 
class QWT3D_EXPORT Qwt3DLinearAutoScaler : public Qwt3DAutoScaler
{
    friend class Qwt3DLinearScale;
 
protected:
    QWT_DECLARE_PRIVATE(Qwt3DLinearAutoScaler)
 
    Qwt3DLinearAutoScaler();
    explicit Qwt3DLinearAutoScaler(std::vector< double >& mantisses);
    ~Qwt3DLinearAutoScaler() override;
    Qwt3DAutoScaler* clone() const override;
    int execute(double& a, double& b, double start, double stop, int ivals) override;
 
    // Copies state from another Qwt3DLinearAutoScaler (used by Qwt3DLinearScale::clone)
    void copyStateFrom(const Qwt3DLinearAutoScaler& other);
 
private:
    void init(double start, double stop, int ivals);
    double anchorvalue(double start, double mantisse, int exponent);
    int segments(int& l_intervals, int& r_intervals, double start, double stop, double anchor, double mantissa, int exponent);
};
 
 
#endif