ODEEventDetector.hpp

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#pragma once
 
#include "AstGlobal.h"
 
AST_NAMESPACE_BEGIN
 
class AST_MATH_API ODEEventDetector
{
public:
    enum EDirection
    {
        eDecrease = -1,     
        eBoth = 0,          
        eIncrease = 1,      
    };
 
    ODEEventDetector() = default;
    virtual ~ODEEventDetector() = default;
 
    virtual double getDifference(const double* y,double x) const{return getValue(y, x) - goal_;}
 
    virtual double getValue(const double* y,double x) const = 0;
 
    int getRepeatCount() const { return repeatCount_; }
    void setRepeatCount(int repeatCount) { repeatCount_ = repeatCount; }
 
    EDirection getDirection() const { return direction_; }
    void setDirection(EDirection direction) { direction_ = direction; }
 
    double getThreshold() const { return threshold_; }
    void setThreshold(double threshold) { threshold_ = threshold; }
 
    double getGoal() const { return goal_; }
    void setGoal(double goal) { goal_ = goal; }
 
 
private:
    int         repeatCount_{1};    
    EDirection  direction_{eBoth};  
    double      threshold_{1e-10};  
    double      goal_{0.0};         
};
 
template<typename Func>
class ODEEventDetectorGeneric: public ODEEventDetector
{
public:
    explicit ODEEventDetectorGeneric(Func func) 
        : func_(std::move(func)) 
    {}
    
    double getValue(const double* y,double x) const override {
        return func_(y, x);
    }
    
private:
    Func func_;
};
 
 
AST_NAMESPACE_END