When using a z-buffer, a pixel can be culled ( discarded ) as soon as its depth is known, which makes it possible to skip the entire process of lighting and texturing a pixel that would not be visible anyway.

When, three years later, 3D Realms released Duke Nukem 3D, a tongue-in-cheek science fiction shooter based on Ken Silverman's technologically similar Build engine, id Software had nearly finished Quake, its next-generation game, which mirrored Dooms success for the remainder of the 1990s and significantly reduced interest in its predecessor.

When realtime 3D graphics stormed the arcade industry, the Neo Geo's hardware was unable to follow along.

When projecting a 3D scene onto a 2D plane, it is necessary at some point to decide which polygons are visible, and which are hidden.

When originally developed, for the Intel i860, the use of integer math made sense ( both 2D and 3D calculations required it ), but as graphics cards that did much of this became common, integer SIMD in the CPU became somewhat redundant for graphical applications.

When 3D Realms first announced their video game Duke Nukem Forever in 1997, it was early in its development.

When developing software for a simulator, which can range from embedded avionics devices to 3D terrain databases by way of full motion control systems, the engineer keeps a notebook detailing the development " the build " of the project or module.

When the proper viewing device is used, a hidden 3D scene emerges from these random dots.

When immersed in an illusory three-dimensional ( 3D ) virtual world named SnowWorld, patient 1 was able to complete a 10-min mock scan with low anxiety and reported an increase in self-efficacy afterwards.

When it was released in 1994, the game broke new ground by introducing the use of 3D polygons to the shooter genre.

When these companies exited the 3D space to focus on other product niches, SGI was left as the only supporter, exactly what they were trying to avoid.

When pictures are viewed stereoscopically, it showed that the two images are combined by the brain to produce 3D depth perception.

When Sega released the Model 1 development board, a piece of hardware capable of generating 3D polygonal graphics, Suzuki and AM2 went right to work.

When applied to a stack of images, typical in medical imaging, the resulting contours after image segmentation can be used to create 3D reconstructions with the help of interpolation algorithms like Marching cubes.

When LCD shutter glasses are used for stereo 3D displays, the effective refresh rate is halved, because each eye needs a separate picture.

When using a Mac, he uses Ray Dream Studio, and when using a PC, usings 3D Studio Max.

" When Katzenberg appeared on The Colbert Report on April 20, 2010, he confirmed that from now on " every single movie " that DreamWorks Animation produced would be in 3D and gave Stephen Colbert a pair of new 3D glasses.

When Duke Nukem 3D was converted to the Game. com console in 1996, the more conventional 2. 5D game engine of the game was scrapped for a lower resource version.

" When 3D Realms released the Duke Nukem 3D source code, I thought somebody would do a OpenGL or Direct3D port.

When the player's army meets an enemy army, a 3D real-time tactical battle is started, which represents the other half of gameplay in Rome: Total War.

When both of these are used together, they can create a wide variety of 3D objects and contraptions.

When Slerp is applied to unit quaternions, the quaternion path maps to a path through 3D rotations in a standard way.

When sufficiently accurate and complete measurements are available, it will be possible to set limits on the thermal and electrical characteristics of the surface and subsurface materials of the moon.

When problems with poor control at high speed were first encountered, they were addressed by designing a new style of control surface with more power.

When dry, acrylic paint is generally non-removable from a solid surface.

When surface to air missiles became capable of hitting high flying aircraft bombers, bombers used flight at low altitude to evade radar detection.

When evaluating a coin, the following — often subjective — factors may be considered: 1 ) " eye appeal " or the aesthetic interest of the coin ; 2 ) dents on the rim ; 3 ) unsightly scratches or other blemishes on the surface of the coin ; 4 ) luster ; 5 ) toning ; 6 ) level of detail retained, where a coin with full details obviously is valued higher than one with worn details.

When metal ions are reduced from ionic solution, they form a pure metal surface on the cathode.

When particles in a beam are thrown against a foil made of a certain substance, the cross section is a hypothetical area measure around the target particles of the substance ( usually its atoms ) that represents a surface.

When the angle θ does not satisfy the above condition, the horizontal component of force exerted by the road does not provide the correct centripetal force, and an additional frictional force tangential to the road surface is called upon to provide the difference.

When the magma approaches the surface of the Earth, the rapid off-loading of overlying material causes the trapped gases to decompress rapidly, thus triggering explosive destruction of the magma and spreading volcanic ash over wide areas.

When EM radiation at the frequences for which it is referred to as " radio waves " impinges upon a conductor, it couples to the conductor, travels along it, and induces an electric current on the surface of the conductor by moving the electrons of the conducting material in correlated bunches of charge.

When the umbra does not reach the surface of the Earth, the Sun is only partially occulted, resulting in an annular eclipse.

When wet, the oil tends to float to the surface of the roads making them very slippery and dangerous.

When swimming, the thorax would be weighed down by the front legs, making it difficult for the animal to move its neck and legs in harmony or keep its head above the surface.

When the cannon was fired through the touchhole, turbulence from the initial surface combustion caused the rest of the powder to be rapidly exposed to the flame.

When the stone hits the surface of the water, a circular pattern of waves appears.

When jewelry containing diamonds is heated ( for repairs ) the diamond should be protected with boracic acid ; otherwise the diamond ( which is pure carbon ) could be burned on the surface or even burned completely up.

When jewelry containing sapphires or rubies is heated, it should not be coated with boracic acid or any other substance, as this can etch the surface ; they do not have to be " protected " like a diamond.

When using an injection port, the syringe needle always stays above the surface of the skin, thus reducing the number of skin punctures associated with intensive insulinotheraphy.

When the surface glycosaminoglycan ( GAG ) layer is damaged ( via a urinary tract infection ( UTI ), excessive consumption of coffee or sodas, traumatic injury, etc.

When issues were thoroughly vetted, then the best ideas would bubble to the surface.

When a key is pressed, the foil tightly clings to the surface of the PC board, forming a daisy chain of two capacitors between contact pads and itself separated with thin soldermask, and thus " shorting " the contact pads with an easily detectable drop of capacitive reactance between them.

When cut open, lithium exhibits a metallic luster, but contact with moist air corrodes the surface quickly to a dull silvery gray, then black tarnish.

When depictions of lesbians began to surface, they were often one-dimensional, simplified stereotypes.

When this angle is exceeded, photons no longer penetrate the semiconductor but are instead reflected both internally inside the semiconductor crystal and externally off the surface of the crystal as if it were a mirror.

When full, a notable phenomenon is that around midday the lake surface can often become very flat.