|
|
 |
|
|
 |
L(x', lambda) = S(x, x') * (R(x', lambda) / PI) * (cos(theta) * cos (theta') / ||x-x'||^2) * area_of_light
where:
x' = the point
in space at which to evaluate the luminance
x = a uniform
random position on the light
| 1 if x' is not shadowed by another object
S(x, x')
-|
| 0 Otherwise
R(x', lambda)
= Objects reflected color based on the given light wavelength
theta = angle between
normal at x and L (the light vector)
theta' = angle
between the normal at x' and L
Here are the results:
|
|
|
|
|
|