2D icons are really notable 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).
The above-mentioned items can be managed by 2D transformations for example rotation, scaling or angular position etc. Meshing simple models you may get more complex ones.
Due to the layers technique 2D icons can create the illusion of all 3D characteristics such as shadow, reflection or highlighting. The layers should maintain the definite hierarchy and order carefully. This makes modifying 2D icons and related objects easier.
2.5D Icons as the pseudo 3D kind of 2D Icons
The layered 2Dicons may also be known as 2.5D models. This technology allows web-designers to work with any layer with no need of touching the others. The most of the prominent graphics editors choose this kind of 2D object creation.
2.5D is a synonym to pseudo 3D and is interpreted as "two-and-a-half-dimensional" graphics. Models created with 2.5D technology look like tridimensional while in fact they're not.
This technology used for designing 2D icons is usually attained by the special lighting effect. 3D illusion can be reached due to the virtual light source to the left or to the right side and above the users monitor.