cloudy-raytracer/shader/refractionshader.h

#ifndef REFRACTIONSHADER_H
#define REFRACTIONSHADER_H

#include "shader/shader.h"

class RefractionShader : public Shader
{

public:
    // Constructor
    RefractionShader(float indexInside, float indexOutside, Color const &objectColor = Color(1, 1, 1), float lightLoss = 0);

    // Shader functions
    Color shade(Scene const &scene, Ray const &ray) const override;

    bool isTransparent() const override;
    Color transparency(const Scene &scene, const Ray &ray, float maxLength) const override;

private:
    float indexInside;
    float indexOutside;
    float lightLoss;
    Color objectColor;

    float remainingLightIntensity(float distanceThroughObject) const;
};

#endif