「Lamb」：修訂間差異
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The probability of a surface emitting light ray according to Lambertian cosine law. The number of photons | The probability of a surface emitting light ray according to Lambertian cosine law. The number of photons emitted in a solid angle <math>d\Omega </math> is proportional to <math>\cos(\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. | ||
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The probability is 100%. | The probability is 100%. | ||
=='''Math'''== | |||
{| class="wikitable" | |||
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! BSDF | |||
! PDF | |||
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| <math>\frac{1}{\pi}</math> | |||
| <math>\frac{\cos \theta}{\pi}</math> | |||
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於 2019年9月19日 (四) 03:20 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 is proportional to , where 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 | |
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