Environment types

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environment-2014.png

Environments are light sources located at infinity. They describe light coming from outside your scene, such as daylight. The other type of light source in Ocean is a geometry object whose material has light emission properties.

You may define multiple environments, for instance several weather conditions for daylight. The active environment for the simulation may be chosen in the render settings.




Uniform

Scene lit by a uniform environment

Summary

This environment illuminates the scene uniformly from every direction

Link

Uniform environment reference

Disc

Scene lit by a uniform environment

Summary

This environment illuminates the scene from an infinitely distant uniform disc defined by its angular radius and radiance. This can model for instance sun illumination outside the atmosphere.

Link

Disc environment reference

Skylight

Scene lit by a skylight environment

Summary

The skylight environment simulates the sun and the atmosphere viewed from the earth's surface. It is based on the work A Practical Analytic Model for Daylight - University of Utah. Sky polarization is modeled according to An Analytical Model for Skylight Polarisation, Wilkie et al.(2004)

Link

Skylight environment reference

Envmap

Scene lit by a studio HDR envmap environment

Summary

The envmap environment uses a spherical image file for controlling the environment lighting. It uses equirectangular projection, where the horizontal axis is longitude and the vertical axis latitude.

Link

Envmap environment reference

CIE sky

Scene lit by a CIE sky type 12 environment

Summary

The CIE sky environment correspond to the standard distributions defined in:

ISO 15469:2004 (CIE S 011/E:2003) - Spatial distribution of daylight - CIE standard general sky

Link

CIE sky environment reference


See also

Node types