"Lamb" 修訂間的差異

出自 DDCC TCAD TOOL Manual
前往: 導覽搜尋
(Math)
(Math)
 
行 21: 行 21:
 
! PDF
 
! PDF
 
|-
 
|-
| <math>\frac{1}{2\pi\cos \theta}</math>
+
| <math>\frac{1}{\pi}</math>
| <math>\frac{1}{2\pi}</math>
+
| <math>\frac{\cos \theta}{\pi}</math>
 
|}
 
|}

於 2019年9月19日 (四) 11:20 的最新修訂

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}