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#ifndef OBJECT_H
#define OBJECT_H
#include <memory>
#include "core/vector.hpp"
#include "core/ray.hpp"
#include "core/spectrum.hpp"
// Implements phong BRDF
class Material {
public:
Material(Spectrum color, double defuse, double spectral=0, double spectral_pow=0, double emissive=0);
Spectrum reflect(const Vec3d &normal, const Vec3d &in, const Vec3d &out, const Spectrum &incol) const;
Spectrum emits() const {
return m_color * m_emissive;
}
// Whether the material is reflective
bool reflects() const { return m_defuse+m_spectral > 0; }
private:
Spectrum m_color;
double m_defuse;
double m_emissive;
double m_spectral;
double m_spectral_pow;
};
class Shape {
public:
Shape(const Material &mat) : m_mat(mat) { }
virtual Vec3d norm_at(const Vec3d &point, const Vec3d &indir) const = 0;
virtual double intersect(const Ray &ray, bool skip_dist) const = 0;
const Material &m_mat;
};
class Sphere : public Shape {
public:
Sphere(const Material &mat, Vec3d center, double radius);
Vec3d norm_at(const Vec3d &point, const Vec3d &indir) const;
double intersect(const Ray &ray, bool skip_dist) const;
private:
Vec3d m_center;
double m_radius;
};
class Plane : public Shape {
public:
Plane(const Material &mat, Vec3d start, Vec3d norm);
Vec3d norm_at(const Vec3d &point, const Vec3d &indir) const;
double intersect(const Ray &ray, bool skip_dist) const;
private:
Vec3d m_start;
Vec3d m_norm;
};
#endif
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