3D computer graphics use a three-dimensional model of geometric data, stored in a computer, to perform calculations and render 2D images. These images may in turn be stored for later viewing or displayed in real time.

3D computer graphics use 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.  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.

With the advent of 3D printing and NPC model making, 3D models are no longer confined to virtual space.


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