2012年12月11日星期二
Rendering Varieties
There are several types of renderings. As we all know, rendering is the process and often used by animators, architects and and video game systems. Rendering is the process to create a finished image from a wire frame or rough model. Usually, we call the finished image as 3d rendering or 3d visualization. Like rendering for architecture, we call architectural rendering.
One of the first type of rendering engines was "True 3D" and was used in Wolfenstein 3D according to the University of California. In reality it created a 2.5 dimensional image, where 2D images would orient themselves toward the camera. When ray casting was introduced, it allowed 3D images based off of polygons to be created.
Ray tracing is used when making 3D Models that need to be photo-realistic. It can be time-consuming compared to other methods, since it traces the path of light through pixels;
Ray casting is much like ray tracing, but does not create shadows and reflections in the same way; Scanline rendering is used to demonstrate a visible surface. It renders row by row, as opposed to pixels or polygons. It is widely used for movie effects, due to its speed and realism.
Rendering has made it possible to produce photo-realistic models, and life-like video games. This allows for virtual tours of homes, advancements in medicine, and realistic special effects.
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