The Lighting tool allows interactively adjusting several settings related to illumination:
These and additional related parameters can be adjusted with the commands lighting and material, as well as by clicking icons in the Graphics Toolbar.
The Lighting tool can be opened from the Depiction section of the Tools menu and manipulated like other panels (more...).
There are two directional lights, key and fill, plus ambient lighting. The key light is often the dominant source and can cast shadows; the first set of intensity, direction, and color values reported in the Log refer to this light. The fill light serves as a secondary directional source to improve the visibility of regions that would otherwise be dark. Regardless of whether shadows are on, the directional lights cause “shading,” where the brightness of an object varies based on the angle between the light direction and the surface normal. The key light also produces directionally dependent specular highlights. The ambient lighting is an approximation to omnidirectional illumination. Shadows cast from multiple uniformly distributed directions can produce ambient shadowing, or “ambient occlusion.”
Choices for lighting Preset:
– all three kinds of light, but no shadows
(details...)
– all three kinds of light, key light with shadows,
ambient lighting with shadowing from 64 directions
(details...)
– ambient lighting only, ambient shadowing from 64 directions
(details...)
– ambient lighting only, no shadows (details...)
or graphics silhouettes false