Lamb

出自 DDCC TCAD TOOL Manual
(已重新導向自 $Lamb)
前往: 導覽搜尋

Format

Lamb // float

The probability of a surface emitting light ray according to Lambertian cosine law. The number of photons emitted in a solid angle d\Omega is proportional to \cos(\theta), where \theta is the angle between the wave vector of a light ray and the normal vector of the emission surface.

Example

#Lamb
SurfEmit
Shell 1 
1.00000

The probability is 100%.

Math

BSDF PDF
\frac{1}{\pi} \frac{\cos \theta}{\pi}