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Diagram of cardinal marks as seen during the day, with their light patterns. The lights shown here are configured as "Quick". A cardinal mark is a sea mark (a buoy or other floating or fixed structure) commonly used in maritime pilotage to indicate the position of a hazard and the direction of safe water.
They are usually flat, without information about the light's direction, whilst some game engines use multiple lightmaps to provide approximate directional information to combine with normal-maps. Lightmaps may also store separate precalculated components of lighting information for semi-dynamic lighting with shaders, such as ambient-occlusion ...
A safe water mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate the end of a channel. They usually imply that open, deep and safe water lies ahead. They are also used to indicate the start and end of a buoyed section of a continuous narrow channel; and a series of ...
The northern lights could dazzle millions of Americans in some northern states this weekend. An eruption of solar material from the sun earlier this week could lead to a show of the aurora ...
Diffuse interreflection is apparent when light from one diffuse object is reflected onto another. Photon mapping is particularly adept at handling this effect because the algorithm reflects photons from one surface to another based on that surface's bidirectional reflectance distribution function (BRDF), and thus light from one object striking another is a natural result of the method.
The towers were locked until the keepers returned in March for the start of the shipping season. Landing at the Stannard Rock Light was difficult, but often the more serious problem at the start of the season was the need to take sledgehammers and pickaxes to clear away layers of thick ice (1 to 2 feet (0.30 to 0.61 m) deep) on the entry door ...
Real-world subsurface scattering of light in a photograph of a human hand Computer-generated subsurface scattering in Blender. Subsurface scattering (SSS), also known as subsurface light transport (SSLT), [1] is a mechanism of light transport in which light that penetrates the surface of a translucent object is scattered by interacting with the material and exits the surface potentially at a ...
Map to over 150 Christmas lights in Rochester area. We are still adding homes to our map, so please keep your suggestions coming. If you see a home with beautiful Christmas lights, ...