1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
#ifndef __qwt3d_autoscaler_2003_08_18_12_05__
#define __qwt3d_autoscaler_2003_08_18_12_05__
#include <vector>
#include "qwt3d_global.h"
#include "qwt3d_autoptr.h"
namespace Qwt3D
{
//! ABC for autoscaler
class QWT3D_EXPORT AutoScaler
{
friend class qwt3d_ptr<AutoScaler>;
protected:
//! Returns a new heap based object of the derived class.
virtual AutoScaler* clone() const = 0;
//! To implement from subclasses
virtual int execute(double& a, double& b, double start, double stop, int ivals) = 0;
virtual ~AutoScaler(){}
private:
void destroy() const {delete this;} //!< Used by qwt3d_ptr
};
//! Automatic beautifying of linear scales
class QWT3D_EXPORT LinearAutoScaler : public AutoScaler
{
friend class LinearScale;
protected:
LinearAutoScaler();
explicit LinearAutoScaler(std::vector<double>& mantisses);
//! Returns a new heap based object utilized from qwt3d_ptr
AutoScaler* clone() const {return new LinearAutoScaler(*this);}
int execute(double& a, double& b, double start, double stop, int ivals);
private:
double start_, stop_;
int intervals_;
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);
std::vector<double> mantissi_;
};
} // ns
#endif
|
