2D icons are really well known for their flexibility. This is achieved by the peculiarity of rendering them at different resolutions suitable for various output devices.
2D Icons may include the below items:
- raster pictures (digital graphics);
- styled text as a typeset for 2D Icons;
- vector models (geometric graphics).
All these items can be managed by 2D transformations such as rotation, scaling or angular position etc. Meshing basic models you may get more complex ones.
Because of the layers technique 2D web icons can create the illusion of all 3D characteristics like shadow, reflection or highlighting. The layers really should maintain the certain hierarchy and order carefully. This makes modifying 2D icons and similar objects simpler.
2.5D Icons as the pseudo 3D kind of 2D Icons
The layered 2Dicons are also known as 2.5D models. This technology allows web developers to work with any layer with no need of touching the others. This type of 2D object creation is preferred by the most of the well known graphics editors.
2.5D is a synonym to pseudo 3D. This means "two-and-a-half-dimensional" graphics. Models that were created with a help of with 2.5D technology appear to be tridimensional while in fact they're not.
This technology used for designing 2D web icons is often attained by the special lighting effect. 3D illusion is achieved as a result of virtual source of light to the left or to the right side and above the users monitor.
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