Planetary Environment


The Planetary environment type is a flexible Nishita sky model. It is most useful when rendering scenes as they are seen from outer space. For its effects to be visible, the camera has to have a very high Altitude value as it moves to outer space to view the expansive horizon of the planetary body. It takes into account the conditions within and beyond the atmosphere of a planetary body (like Earth) and its surroundings in space. Instead of a single ground color and a sky/sunset color, there is a planetary surface that reflects and emits light. This Node extends the Environment's Medium (volume rendering and subsurface scattering) with an atmospheric scattering through the planetary body's atmosphere. Here, the atmosphere is perceived as a layer of gas surrounding a planetary mass, and it is held in place because of gravity so as the light travels into atmosphere either from the outer layer to the ground or from a light source within the atmosphere, then the atmosphere's density is sampled along the ray at regular intervals, resulting in an amount of scattering based on the atmosphere's density.


Figure 1: A scene rendered using the Planetary environment, where the camera is set at a very high altitude


Planetary Environment Parameters

Visible Environment

Sun Direction


Planetary Surface

Planetary Atmosphere