Determine the components of illumination, Data Structure & Algorithms

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Determine the Components of Illumination

The light reaching the eye when looking at a surface has clearly come from a source (or sources) of illumination and bounced off the surface. In fact the light reaching the eye can be considered as being made up of 3 different components :

that from diffuse illumination (incident rays come from all over not just one direction)
that from a point source which is scattered diffusely from the surface
that from a point source which is specularly reflected.

We will consider each of these components separately and then combine them into one.

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