#ifndef DEPTHOFFIELDSHADER_H
#define DEPTHOFFIELDSHADER_H

#include "camera/camera.h"
#include <random>
#include "renderer/renderer.h"
#include "scene/simplescene.h"


class DOFRenderer : public Renderer {
    static void renderThread(const Scene *scene, const Camera *camera, Texture *image, const DOFRenderer *renderer, int width, int widthStep,
                             int widthOffset, int height, int heightStep, int heightOffset, std::atomic<int> *k,
                             const int stepSize);

public:
    // Constructor
    DOFRenderer(float _aperture, int _secondaryRayCount, float _focalLength);
    ~DOFRenderer() override = default;

    //Render Functions
    Texture renderImage(Scene const &scene, Camera const &camera, int width, int height) override;

    // DOF sampler
    Color sample(const Ray &ray, const Scene& scene, const Camera& camera) const;

private:
    float aperture, focalLength;
    int numSamples;

    static std::random_device rd;
    static std::mt19937 gen;

};

#endif