|
|
ray tracing
<graphics> A technique used in computer graphics to create
realistic images by calculating the paths taken by rays of
light entering the observer's eye at different angles. The
paths are traced backward from the viewpoint, through a point
(a pixel) in the image plane until they hit some object in
the scene or go off to infinity. Objects are modelled as
collections of abutting surfaces which may be rectangles,
triangles, or more complicated shapes such as 3D splines.
The optical properties of different surfaces (colour,
reflectance, transmitance, refraction, texture) also affect
how it will contribute to the colour and brightness of the
ray. The position, colour, and brightness of light sources,
including ambient lighting, is also taken into account.
Ray tracing is an ideal application for parallel processing
since there are many pixels, each of whose values is
independent and can thus be calculated in parallel.
Compare: radiosity.
Usenet newsgroup: comp.graphics.raytracing.
http://directory.google.com/Top/Computers/Software/Graphics/3D/Ray_Tracing/.
(2003-09-11)
Try this search on OneLook / Google
Nearby terms:
RAWOOP-SNAP « ray casting « Rayleigh distribution « ray tracing » R:BASE » RBASIC » RBCSP
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
USB 2.0 Web PC Camera (Silver/Blue)USB 2.0 Web PC Camera (Silver/Blue) ** USB 2.0 Web PC Camera **This PC Camera is your visual and audio communication over the Internet. It features a high resolution CMOS sensor, 640 x 480 VGA resolutions, and USB interface for true Plug and Play functionality. Send live video, take great snapshots, and more with this PC Camera!General Features:- Silver and blue color- USB 2.0 interface (backwards compatible with USB 1.0/1.1- CMOS with 100K pixels image sensor- 640 x 480 VGA resolution- 35 fps @ CIF- 10-15 fps @ VGA- 640x480/352x288/176x144/320x240/160x120 resolutions- RGB24 YUV1420 output format- RGB24, 1420 video data format- 52-degree view angle- Automatic exposure- Tilt-swiveling baseRetail Box Includes:- Web PC Camera- Manual - Driver CD (3-inch type) Compatibility/Requirements/Disclosures:** Requirements *** Pentium 300 MHz or above* Windows 98/ME/2000/XP* 64 MB RAM or higher* 200 MB available hard disk drive or higher* CD-ROM drive * Available USB port More ...
Old Time Radio Classics: The Shadow (CD)Old Time Radio Classics: The Shadow (CD) Hidden away in a sanctum in the heart of New York City, a being in black ponders beneath a blue light and chuckles slyly to himself as he peruses reports of his secret agents. For The Shadow knows! Before crime's plans have been put into being by some master mind of the underworld, word has come to The Shadow from his agents in far- flung corners of the world.Windows 95/98/Me/2000/XP, Mac and Audio CD Player More ...
6-Foot USB 1.1 A to B Cable (Blue)6-Foot USB 1.1 A to B Cable (Blue) ** 6-Foot USB 1.1 A to B Cable (Blue) **When the need for a USB 1.1 cable arisestrust on I Sell! This USB cable supports USB 1.1 specification and has A to B plug type connectors. Its 6-foot length comesin handy for those hard to reach areas!Stock up today!General Features:- USB 1.1 cable- 6-Foot Length- Blue color- A to B plug type connectorsRegulatory Approvals:- ULNotes:- Cable only Compatibility/Requirements/Disclosures:** Requirements *** Available USB port More ...
EGames PinballEGames Pinball Send your ball ricocheting off energized bumpers, spiraling through ramps, and rocketing through bonus areas and secret tunnels. Multiple view options allow you to get right into the action! This is one of the premier pinball games on the market, if you're a pinball fan don't miss this one! Windows More ...
Simply Touch OpticalBar USB PC ControllerSimply Touch OpticalBar USB PC Controller ** Simply Touch OpticalBar USB PC Controller **Offer your customers the ability to make their PC screen interactive with the Simply Touch OpticalBar USB! Simply attach to the edge of thedisplay area on the monitor and plug into a USB port! With the OpticalBar you can touch your screen to control your computer.Use the OpticalBar to launch preferred applications, e-mail or websites and to perform your most frequent tasks, its simple! Stock uptoday!General Features:- USB interface cable attached- Touch your screen to easily control your computer - Use predefined icons for most frequent tasks - Create and add your own icons, links and shortcuts - Exchange your creations through Icons- Attaches to MonitorQuick Launch:- Short Cuts- Web Links- Applications- E-Mail- File OpeningUnit Dimensions:- 5 x 1.75 x 0.75 (approximate)Regulatory Approvals:- CERetail Box Includes:- Simply Touch OpticalBar- Adhesive Pads- User Guide- Software on CD-ROM Compatibility/Requirements/Disclosures:** Requirements *** Windows 98SE/2000/ME/XP* Available USB port* CD-ROM Drive (to load software) Informational Links:http://www.simply-touch.com/document.php?project=h2i&locale=en&doc=products&level1 ... More ...
10-Bay Black/RED ATX Window Case w/450W Red LED PS10-Bay Black/RED ATX Window Case w/450W Red LED PS ** 10-Bay ATX Computer Case **Start building your own computer system with this sleek black and red computer case. It supports a 450-watt power supply and features 10-bay drives and seven expansion slots! The side panel window includes a case fan that glows a bright blue LED light and the power supply fan emits a bright red LED when the system is running. Other features of this case include side mounted USB ports, headphone and microphone jacks and supports multiple types of motherboards. Order yours today!General Features:- Black/Red case- Power switch- Reset switch- Power LED- Hard drive LED- Interior is painted in black and red- See-through side panel window with fan that glows a blue LED- A 450-watt power supply with a fan that emits a bright red light- Two (2) USB ports on side of case- Microphone and headphone jacks on side of caseDrive Bay Features:- Four (4) 5.25-inch external drive bays- Two (2) 3.5-inch external drive bays- Four (4) 3.5-inch internal drive baysExpansion Features:- Seven (7) punchoutexpansion slotsSupported Form Factors:- ATX- Baby AT- Mini ATX- Micro ATXCase Fan Supply Support:- One (1) 80mm case fan on side panel window (pre-installed)- One (1) 80mm case fan on back (not included)- Two (2) 80 mm case fans at front (not included)Power Supply Features:- Model: LP-9960B- 450-watt power- 115v-230v manual switchPower Supply Input:- 115-230V @50/60Hz,10A/6APower Supply Output:- +3.3V/26A- +5V/35A- +12V/15A- -5V/0.5A- -12V/0.8A- +5Vsb/2ACase Dimensions:- 16.5 x 8 x 19-inches (H x W x D)Package Includes:- 10-Bay ATX computer case- 450-watt power supply- Power cord- Screw pack- Fold-out feet Compatibility/Requirements/Disclosures: ** Requirements *** Supported motherboard* Rest of system* Available power outlet More ...
|
