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# pragma once
# include "Defines.h"
# include "LlUtils_global.h"
/// @brief 坐标轴刻度的计算
class I_UTILSSHARED_EXPORT ZxScaleHelper
{
public :
ZxScaleHelper ( ) ;
~ ZxScaleHelper ( ) ;
/// @brief 求取坐标轴的刻度显示
/// @param fMin 左值,通常为最小值
/// @param fMax 右值,通常为最大值
/// @param bAxisX 是否X轴
/// @param bLinear 是否线性
/// @param bExpand 是否流量自动扩展一个tick
/// @param pVecScales结果存储位置
/// @note 1: 通常 fMin < fMax; 对于fMin > fMax 的情况也做了相应处理(返回结果也是倒着)
bool calAxisScales ( float & fMin , float & fMax , \
bool bAxisX , \
bool bLinear = true , \
bool bExpand = false , \
QVector < float > * pVecScales = NULL ) ;
private :
// 内部接口(目前刻度计算函数,还有待较大完善空间)
bool checkReverse ( ) ;
bool checkSameValue ( ) ;
bool checkLogicalZero ( ) ;
void adjustIncrease ( float & f , float & fMin ) ;
bool calScaleByLinear ( ) ;
bool calScaleByLogical ( ) ;
void finalAdjustP ( ) ;
private :
// 计算过程中涉及到的一些中间变量
float m_fMax ;
float m_fMin ;
float m_fMinRaw ;
float m_fMaxRaw ;
bool m_bAxisX ;
bool m_bLinear ;
bool m_bNeedTurn ;
bool m_bExpand ;
float m_fTickIncrease ;
QVector < float > * m_pVecTicks ;
} ;