Volumetric shadows or shadow volumes are a technique for creating shadows in virtual environments by using a polygonal volume as the shadow, created using real-time shadow geometry in each frame more often than not, for the most accurate and thus realistic shadowing. This polygonal area then greatly simplifies the prospect of casting sub-shadows, since if a second model is partially in the shadow volume, that part must therefore be in shadow.
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A brief but thorough multi-part article from Gamasutra, on creating volumetric rendering in real-time, for use in fog, fluid, and other effects, which correctly affect light at any point through them.
The Perspecta display system was released by Actuality Systems in May 2005. Its intended purpose is as a 3D volumetric display capable of projecting a virtual object right in front of you.
NASA has unveiled a weather satellite capable of converting any typhoon into a 3D volumetric map in unprecedented detail, in real-time. These maps being extremely useful for both dedicated weather simulators and interactive 3D environments alike.
A technical look at the Perspecta suspended display system, released by Actuality Systems in May 2005. Its intended purpose is as a 3D volumetric display capable of projecting a virtual object right in front of you.
A coder?s article about creating realistic, dynamic soft shadow in real-time interactive, and complex scenes.
A quote from "Otherland: City of golden shadow", talking about the probable confusion that could result from a realistic enough, surround news feed versus actual physical experience of a disaster.
A lengthy quote from the book "Otherland: City of Golden Shadow", by Tad Williams, which sums up the dialectic between physical reality and virtual reality, in one of the most succinct and apt ways we have encountered.
Read this series for the twisting, evolving, many diverse threaded storyline, or read them for the wonderful imagery, and enchanting ideas for VR of the future. Whichever reason makes you pick up one of these, you are in for one hell of a ride!
A look at the 1995 milestone movie Toy Story, and an interesting question is asked: Why are modern mainstream VRs only just coming out from the shadow of that world-quality, 14 years later?
DVT or Deep Vein Thrombosis is a condition which is already known to affect airline travellers, and office workers. Thrombosis occurs when people are sitting still for long periods of time. Blood clots form in the arteries where blood is settling over long periods of time - as opposed to circulating properly when moving briskly around. This tends to be more of a problem in the lower legs when sitting, but can occur in any part of the body when fully reclined.
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Researchers Benjamin Mora and Min Chen of Swansea University in Singleton Park, Swansea, UK, along with Ross Maciejewski and David S. Ebert of the Purdue School of Electrical and Computer Engineering in West Lafayette, Indiana, US, have dev...
In the lab of UCLA electrical engineering professor Aydogan Ozcan, a prototype cell phone has been constructed that is capable of monitoring the condition of HIV and malaria patients, as well as testing water quality in undeveloped areas or...
One promising modification to next-generation rechargeable Li-ion batteries involves using Si-alloy anodes instead of graphite, which is currently the most common anode material. Many battery manufacturers are developing Si-alloy anodes, wi...
Researchers from the University of Toronto have created a system which allows for direct interaction by gesturel with virtual objects contained in a 3d (length x width x height) volumetric display.
The method used is to tra...
Research coming out of the University of Saarland in Germany promises to revolutionise the speed of raytracing algorithms, making utterly realistic light and shadow available to even the slowest pcs.
The knock-on implications...