The volumetric shadows from the particles and insects should all point away from the lightsource, and helps creating a nice sense of space and perspective.
颗粒和昆虫的体积阴影都应该远离光源，并有助于建立一个很好的空间感和透视。
2
Of or relating to light emitted from a pointsource and reflected or refracted from a curved surface.
由一个点光源发出并从曲面反射或折射的光的或关于这种光的。
3
If I can see the lightsource, I usually make sure to leave a mark here on a separate layer as a point of reference.