Deep Dive into Refractive Objects - How does Cinema 4D Calculate Refractions

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In order for the Renderer to calculate the indexes of refraction for dielectric objects correctly, it needs to know exactly when a ray enters a medium and when it exits.
In this video I will show you how a ray travels through many refractive mediums and how it calculates each refraction by using a method called "Nested Dielectrics".
Links to articles about "Nested Dielectrics":
https://www.researchgate.net/publication/247523037_Simple_Nested_Dielectrics_in_Ray_Traced_Images
https://blog.yiningkarlli.com/2019/05/nested-dielectrics.html

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