Three-dimensional graphics are objects done in computers. These are images of arithmetical data stored in a computer for calculation purposes and for rendering two-dimensional images. 3D images are done for immediate display. 3D graphics also depend on the same algorithms as in 2D graphics. When using any software for computer graphics, the difference between two dimensional and three-dimensional graphics is distorted because 2D functions can make use of 3D methods to get an effect like the lighting if the image. Also, 3D graphics can be rendered using 2D rendering methods. 3D graphics are also sometimes referred to as 3D models. The difference is that 3D models are contained in the file with graphical data and that 3D models are numerical representations of all three-dimensional items. Models are not considered as graphics until it is presented visually. 3D models are not restricted to practical space. Any model can be seen visually as a 2D image by undergoing the procedure of 3D rendering. It can also be used for calculations and for computer simulations that are non-graphical.
Doing 3D computer graphics is successively divided into three parts. The part that defines the shape of the object is called 3D modeling. The models used to come from two sources. One is originating from some kind of modeling device in a computer used by an artist or an engineer and the sources that are scanned to a computer coming from an actual object. The part that defines the movements and position of the objects within the setting is called layouts and animation. Before rendering the object, it must be positioned in the setting. The positioning defines the spatial relationship of the object considering its place and size.
On the other hand, animation is defined as the chronological description of any object meaning the way the object moves and distorts over time. The procedure is done by outlining the number of rays a reflection can take and also considering other aspects that can be adapted to have the preferred visual effects. The last part of creating 3D graphics is the part where the image of the object is produced. This is called rendering. Rendering is the process of converting the model to become an image through the process of simulating the transport of light to achieve images that are photo-realistic. The artist can also include some styles in the image by using non-photorealistic rendering. The operations concerning realistic rendering consider how the light comes from a place to another and how the light relates to the surfaces. It is truly amazing how 3D graphics can easily project an entirely different universe, a world where anything is possible and is embedded in the imaginative minds of 3D animators and movie creators.