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Basic Ray Tracing Algorithm - Polygon Rendering
The Hidden-surface removal is the most complete and most versatile method for display of objects in a realistic fashion. The concept is simply to take one ray at a time, emanating from the viewer's eye (in perspective projection) or from the bundle of parallel lines of sight (in parallel projection) and reaching out to each and every pixel in the viewport, using the laws of optics.
Generally, to avoid wastage of effort by rays starting from sources of light going out of the viewport, the reverse procedure of starting with ray from the viewpoint and traveling to each pixel in the viewport is adopted. If the ray encounters one or more objects, the algorithm filters out all but the nearest object, or when there is an overlap or a hole, the nearest visible portion of all the objects along the line of sight.
Scientific Visualization This is complex for the human brain to create sense out of the large volume of numbers produced through a scientific computation. Statistical and nume
What is CAD Drawings created with Computer-Aided Design (CAD) tools, which were introduced in the 1960s, represented tremendous productivity gains over paper drawings, such as
Seed fill algorithm A seed fill algorithm starts with a known initial interior point of the polygon and spreads out to determine other interior points to fill the given closed
1. What do you understood by the term graphic primitives? Ans. Graphic primitives are the basic graphic objects that can be united in any number and method to produce a new i
File Formats that are used for Vector Data This data can be saved in a wide variety of file formats are as: •EPS: the most well-accepted file format to exchange vector dra
Polygon Representation Methods - Modeling and Rendering Any scene to be created by computer graphics may include a variety of objects, a few of them natural and manmade. Hence
Orientation Dependence - Modeling and Rendering The outcomes of interpolated-shading models are dependent of the projected polygon's orientation. Because values are interpolat
what is region filling? give details
Visible-Surface Detection For the generation of realistic graphics display you know that hidden surfaces and hidden lines should be identified for removing. For this reason we
What you mean by parallel projection? Parallel projection is one in which z coordinates is discarded and parallel lines from every vertex on the object are extended unless the
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