Refraction Raytracing

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Raytracing Reflection, Refraction, Fresnel, Total Internal Reflection ...

https://blog.demofox.org/2017/01/09/raytracing-reflection-refraction-fresnel-total-internal-reflection-and-beers-law/#:~:text=When%20you%20do%20a%20raytrace%20down%20the%20refracted,move%20the%20ray%20slightly%20away%20from%20the%20surface.

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c++ - Refraction in Raytracing? - Stack Overflow

https://stackoverflow.com/questions/26087106/refraction-in-raytracing

And the reflection calculation: Ray Sphere::calcReflectingRay (const Ray &r, const Vector &intersection, const Vector &normal)const { Vector rdir = r.getDirection (); Vector dir = rdir - 2 * (rdir|normal) * normal; return Ray (intersection + dir*BIAS, dir); //the Ray constructor automatically normalizes directions }

Refraction and Ray Tracing

https://www.aao.org/Assets/762b9e74-cf63-4d1e-b3fb-1e226280b2a5/637151349597600000/bo16-pdf?inline=1

Refractive Index (n) Speed of light in vacuum Speed of light in material = The. refractive index (n) of the material. Refraction. Note: Refractive index is a function also of the. wavelength. of light. This is the source of the. phenomenon known as chromatic aberration. This will be important later when we discuss. the . duochrome test. 15

How to properly handle refraction in raytracing - Stack …

https://stackoverflow.com/questions/42218704/how-to-properly-handle-refraction-in-raytracing

Color handleTransparency(const Scene& scene, const Ray& ray, const IntersectionData& data, uint8 depth) { Ray refracted(RayType::Transparency, data.point, ray.getDirection()); Float_t eta = data.material->getRefraction(); if (eta != 1 && eta > Globals::Epsilon) refracted.setDirection(Tools::Refract(ray.getDirection(), data.normal, eta)); …

RayTracing – Adding Reflection and Refraction – Cheney …

https://cheneyshen.com/raytracing-adding-reflection-and-refraction/

Refraction takes place every time there’s a change of medium and that two media, the one the ray exits from and the one it gets in, have a different index of refraction. As you probably know the refraction index of air is very close to 1 and the refraction index of glass is around 1.5). Refraction has for effect to bend the ray slightly.

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