Lightcast
A lightcast is a functional analysis and mapping of the illumination produced by a light source. It is used to map the physical characteristics of light emission for use in functional systems. A lightcast includes the entire zone of illumination while a ray cast measures lighting of a single point in space near the light source.
A lightcast is typically measured using all components of a combined lighting system, including the illumination source and any reflectors, lenses, filters, and diffusers, and the measurement may include average brightness across a flat two-dimensional surface as well as brightness across a curved of spherical surface. Color spectrum may be included, as well as moving and changing effects over time such flickering from a candle.
Sources and credits
This article is adapted from the Wikipedia article “Lightcast”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
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