Define here the attenuation parameters of the new light.
### Axial

Set the **Constant**, **Linear**, **Quadratic** parameters
that control the axial attenuation. This is defined only for positional
and spot lights. The axial attenuation factor is given by:
### Radial

Controls the radial attenuation, defined only for spot
lights. The radial attenuation factor is given by:

Axial Attenuation Factor = 1/(constant+linear*distance +quadratic*distance*distance)

Radial Attenuation Factor = [max (0, vertex . direction)]**radial