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KE attribute in MTL files

I have a .mtl file next to my .obj file that indicates the materials for the object. I am trying to create a parser, but I don’t know what the attribute “Ke” means. eg:

Ka 0.78 0.78 0.78 
Kd 0.78 0.78 0.78
Ks 0 0 0
Ke 17 12 4 # What does this line mean?

Thank:)

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1 answer

Ke stands for emission factor. It is combined with ambient, diffused and specular and reflects the amount of light emitted by the material. If you also have a certain color of radiation, the material will emit light.

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