shape.h

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#ifndef SHAPE_H
#define SHAPE_H
 
#include "ray/ray.h"
#include "base/Vec3.h"
#include <cmath>
#include <string>
#include <sstream>
 
class shape {
  private:
    virtual void intersect (ray &r) = 0;
    virtual Vec3 normal (const ray &r) = 0;
    virtual std::string print_str () const = 0;
 
  friend std::ostream& operator<< (std::ostream &out, const shape &shp) {
    out << shp.print_str();
    return out;
  };
};
 
#endif //SHAPE_H