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//
// Created by Keuin on 2022/4/12.
//
#ifndef RT_OBJECT_H
#define RT_OBJECT_H
#include "material.h"
#include "ray.h"
#include "vec.h"
#include "bitmap.h"
#include <cstdlib>
#include <memory>
#include <limits>
#include <vector>
#include <iostream>
#include <cstdint>
class material;
class object {
public:
// Will the given ray hit. Returns time t if hits in range [t1, t2].
virtual bool hit(const ray3d &r, double &t, double t1, double t2) const = 0;
// With t2 = infinity
inline bool hit(const ray3d &r, double &t, double t1) const {
return hit(r, t, t1, std::numeric_limits<double>::infinity());
}
// If given position is on the object's surface.
virtual bool is_on(const vec3d &p) const = 0;
// Given a point on the surface, returns the normalized outer normal vector on that point.
virtual vec3d normal_vector(const vec3d &where) const = 0;
// object color, currently not parameterized
virtual pixel8b color() const = 0;
// subclasses must have virtual destructors
virtual ~object() = default;
// Get this object's material.
virtual material &get_material() const = 0;
};
#endif //RT_OBJECT_H
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