檢視 Dipole 的原始碼

=='''Format'''==
 Dipole // float

<font size=3>
The probability of a surface emitting light ray according to dipole radiation pattern. The number of photons emitted in a solid angle <math>d\Omega </math> is proportional to <math>\sin^2(\theta)</math>, where <math>\theta</math> is the angle between the wave vector of a light ray and the normal vector of the emission surface.
</font>

=='''Example'''==
 #Dipole
 SurfEmit
 Shell 1 
 1.00000

The probability is 100%.

=='''Math'''==

{| class="wikitable"
|-
! BSDF
! PDF
|-
| <math>\frac{3 (\sin \theta)^2}{8\pi \cos \theta}</math>
| <math>\frac{3 (\sin \theta)^2}{8\pi}</math>
|}