Lighting of a surface is made up of the following independent components:
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Diffuse – the closest to the term "color" of an object
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Specular – the "shininess" of the object. This light is reflected more strongly in a particular direction. Its color is related to the color of the light source.
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Ambient – a minimum amount of light to simulate "global illumination" of the environment. Preventis unlit areas from becoming too dark.
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Emit – a "glowing" object
