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Virtual Dictionary

Cast Shadow

A cast shadow is a shadow cast by an object in a virtual environment, that is cast onto other objects in the environment than the one making the shadow. The shadow cast by your avatar onto the ground is one such example, as is the shadow cast by a tree onto a bench.

Cast shadows are a difficult subject in real-time rendering, since for every object that is visible, its shadow, and how many objects it collides with, must be worked out. Often shortcuts are employed where only key objects cast shadows. These are usually the avatars of users and AIs. In such a manner the realism is preserved where users actually are, and let a bit looser everywhere else.

In order to process cast shadows correctly, raycasting or raytracing techniques must be used, which is a bit beyond real-time rendering's capabilities at the current time.

See Also: Smoke and Mirrors, Raycasting, Raytracing, Frame Rate, Shadow Pass, Attached Shadow, Anisotropic Shading, Isotropic Shading

Below, we offer a selection of links from our resource databases which may match this term.



Related Dictionary Entries for Cast Shadow:

Attached Shadow

Cast Shadow

Cast-Shadows

Shadow Pass









 

Resources in our database matching the Term Cast Shadow:

Results by page [1]   [2]   

Locally Hosted resource
Podcast: When it comes to tech, simplicity sells
This cast from TED 2006, argues at how, no matter what the technology is, if it is going to sell, it must be as simple to use for the end-user, as possible.



Locally Hosted resource
Podcast: Johnny Lee: Creating tech marvels out of a $40 Wii Remote
This cast from TED 2008, looks at how the cheap wii-mote can be easily repurposed to do the job of much more expensive VR hardware.



Locally Hosted resource
Podcast: How creativity is being strangled by the law
This cast from TED 2007, takes a look at how dart laying down of new laws and lobbying victories are twisting that which was designed to foster innovation, into a cage to prevent new innovation.



Linked resource
Soft-Edged Shadows
A coder?s article about creating realistic, dynamic soft shadow in real-time interactive, and complex scenes.



Locally Hosted resource
Podcast: The paradox of choice
This cast from TED 2005, features Barry Schwartz taslking about his then-new book, "The Paradox of Choice". He uses it as a forum to argue that the more choice you have, the less freedom you have, because you cannot make up your mind what to choose.



Locally Hosted resource
Immersive Newscasting versus Actuality
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.



Locally Hosted resource
Otherland: Is this a real place?
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!





Locally Hosted resource
Large Image Display: Toy Story: 1995's Cutting Edge
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?



Locally Hosted resource
Podcast: Parallel Worlds: Explorations in Second Life
This podcast is basically concerned with photography in the virtual. It deals with as they quote "the digital revolution in photography". Pushing beyond technologies such as photoshop to digitally tweak images, this 'cast discusses the possibilities that the photography digital revolution expands as far beyond digitally remastering, as motorised transport extends from the capabilities of the horse.



 

Industry News containing the Term Cast Shadow:

Results by page

(07/02/2005)
Video game firm Bioware has held open auditions for people to become cast members for future games.

The company, which makes role playing games such as Knights of the Old Republic and Neverwinter Nights, was seeking people ag...


(23/12/2008)
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...


(14/08/2013)
Dartmouth and UC Berkeley researchers have developed new software to detect faked photos, using a geometric algorithm to locate inconsistent shadows that are not obvious to the naked eye.

The new method is a significant step ...


(28/05/2009)
Aimed at solving the problem of how to get a big picture out of a small device, micro-projectors cast a large image (typically about 125 centimeters wide) onto a nearby wall or surface to show photos, documents, maps, or video. Several micr...


(19/03/2007)
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...