6.2.5 Specular Reflection

The part of the light directly coming from light sources but also indirectly via other objects and which is mirrored by the surface is controlled by the following part of in the finish statement:

	reflection { color C [, color C1] [exponent E] 
	  [falloff F] [metallic M] [fresnel B] [conserve_energy] 
	}

where the part $C$ of the incoming light is reflected, falloff changes the behavior in such a way that darker objects are reflected less (which corresponds better to reality), usage of color C1 (e.g. for water) makes the reflection depending on the incoming=outgoing angle (i.e. $C$ is used for normal hitting light, $C1$ for light parallel to the surface) and the interpolation inbetween is controlled by exponent E (for linear ($E=1$), quadratic ($E=2$), ...). The option conserve_energy adjusts the amount of light transmitted and filtered by the amount reflected. Using the phrase metallic means that the reflected light is multiplied by the surface color.