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3D computer graphics (in contrast to 2D computer graphics ) are graphics that use a three-dimensional representation of geometric data (often Cartesian ) that is stored in the computer for the purposes of performing calculations and rendering 2D images. Such images may be stored for viewing later or displayed in real-time.
3D computer graphics rely on many of the same algorithms as 2D computer vector graphics in the wire-frame model and 2D computer raster graphics in the final rendered display. In computer graphics software, the distinction between 2D and 3D is occasionally blurred; 2D applications may use 3D techniques to achieve effects such as lighting , and 3D may use 2D rendering techniques.
3D computer graphics are often referred to as 3D models . Apart from the rendered graphic, the model is contained within the graphical data file. However, there are differences. A 3D model is the mathematical representation of any three-dimensional object. A model is not technically a graphic until it is displayed. Due to 3D printing , 3D models are not confined to virtual space. A model can be displayed visually as a two-dimensional image through a process called 3D rendering , or used in non-graphical computer simulations and calculations.

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