interval.hpp

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#ifndef BVH_H
#define BVH_H
 
#include "vec3.hpp"
#include <cmath>
#include <algorithm>
#include <memory>
#include <vector>
using std::shared_ptr;
 
class Interval {
public:
    double min,max;
 
    Interval() : min(+INFINITY),max(-INFINITY) {}
 
    Interval(double min,double max): 
            min(min),max(max) {}
 
    double size() const {return max - min;}
 
    bool contains(double x) const {return min <= x && x <= max;}
 
    bool surrounds(double x) const {return min <= x && x <= max;}
 
    Interval expand(double delta) const {
        return Interval(min - delta,max + delta);
    }
};
 
#endif