Potentially visible set

Potentially Visible Sets are used to accelerate the rendering of 3D environments. This is a form of occlusion culling, whereby a candidate set of potentially visible polygons are pre-computed, then indexed at run-time in order to quickly obtain an estimate of the visible geometry. The term PVS is sometimes used to refer to any occlusion culling algorithm (since in effect, this is what all occlusion algorithms compute), although in almost all the literature, it is used to refer specifically to occlusion culling algorithms that pre-compute visible sets and associate these sets with regions in space. In order to make this association, the camera view-space (the set of points from which the camera can render an image) is typically subdivided into (usually convex) regions and a PVS is computed for each region.

Benefits vs. Cost

The benefit of offloading visibility as a pre-process are:

The application just has to look up the pre-computed set given its view position. This set may be further reduced via frustum culling. Computationally, this is far cheaper than computing occlusion based visibility every frame.

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Vis (town)

Vis is a town on the eponymous island in the Adriatic Sea in southern Croatia. It has a population of 1,934 residents (as of 2011). The town is also the seat of the eponymous Vis municipality, one of the two municipalities on the island (the other one being Komiža) which both administratively belong to the Split-Dalmatia County.

History

Vis was established in the 4th century BC as the Greek polis of Issa, a colony of Syracuse, Sicily (which in turn was a colony of Corinth). Dionysius the Elder, the contemporary tyrant of Syracuse, founded the colony in order to control shipping in the Adriatic Sea. Ancient Issa developed as the urban and economic center of the Dalmatian coasts, and also served as a military base. The city established several colonies, such as Aspálathos, modern-day Split (which in modern times is the largest city in Dalmatia), and others such as Epidauros (Stobreč), and Tragurion (Trogir). Issa functioned as an independent polis until the 1st century BCE, when it was conquered by the Roman Empire. After the Roman conquest Issa lost its significance until the late Middle Ages when it was mentioned in several historical sources.

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VIS (criminal organisation)

Vasil Iliev Security, or VIS, was a security and insurance company in Bulgaria thought to be a front for a criminal organisation dealing in extortion, car theft, drug trafficking and more. Set up in the early 1990s by Vasil Iliev, the company was declared illegal in 1994 but continued operating under the new name of VIS-2.

VIS, along with its rival SIC, was made up primarily of ex-wrestlers, policemen and members of the security apparatus. As well as extortion rackets, the groups also worked in "car insurance" and theft. The capital they earned in the emerging Bulgarian economy of the 1990s allowed them to build huge influence amongst the government.

Vasil Iliev was assassinated on 25 April 1995. His brother Georgi Iliev became the new boss of the company, but was assassinated on 26 August 2005.

References

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/VIS_(criminal_organisation)

Titan (game)

Titan is a fantasy board game for two to six players, designed by Jason B. McAllister and David A. Trampier. It was first published in 1980 by Gorgonstar, a small company created by the designers. Soon afterward, the rights were licensed to Avalon Hill, which made several minor revisions and published the game for many years. Titan went out of print in 1998, when Avalon Hill was sold and ceased operations. A new edition of Titan, with artwork by Kurt Miller and Mike Doyle and produced by Canadian publisher Valley Games became available in late 2008. The Valley Games edition was adapted to the Apple iPad and released on December 21, 2011.

Each player controls an army of mythological creatures such as gargoyles, unicorns, and griffons, led by a single titan. The titan is analogous to the king in chess in that the death of a titan eliminates that player and his entire army from the game. The player controlling the last remaining titan wins the game.

Gameplay

The main game board consists of 96 interlocking hexes, each with a specified terrain type.

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Titan (Bova novel)

Titan is a science fiction novel written by Ben Bova as part of the Grand Tour novel series. It directly follows the novel Saturn, in which the space habitat Goddard has finished its two-year journey from Earth, and has settled into the orbit of Saturn. The book won the 2007 John W. Campbell Memorial Award.

Plot

The ten thousand civilians of the space habitat Goddard have now finally begun their lives in the Saturn system, after an exhausting two-year journey that almost plunged the infant colony into an authoritative regime. As the probe "Titan Alpha" lands on the moon's surface, a number of strange electrical problems begin happening aboard the space habitat.

Characters

Holly Lane - Director of Human Resources aboard the Goddard. Her sister, Pancho Lane, had cryo-frozen her for a couple of decades, starting in her late teens, until a cure for her disease could be found. Now, years later, after learning everything from scratch and receiving many neural boosters, Holly has become a strong-willed individual, with an eidetic memory.

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Titan_(Bova_novel)

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