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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.
Polygon Surfaces - Curves and Surfaces By Figure 1 and Figure 2 it is clear that it is possible to store description of objects as a set of surface polygons and similar i
Trivial Rejection Case of cohen sutherland line clippings Case: it is Trivial Rejection Case; if the logical intersection (AND) of the bit codes of the end points P, Q of
For good understanding of the application of the rules specified above see the following figure, where the shaded region demonstrates the clipped polygon. Fi
A 2D geometric shape is rotated about a point with coordinates (1,2) by 90° in a clockwise direction. Then, the shape is scaled about the same point in the x-coordinate by 2 tim
Question 1 What is Packet-switching network? Discuss its basic operation Question 2 Briefly describe Jackson's theorem Question 3 List and explain the two popular
Question: (a) Describe the term ‘Multimedia'. (b) Briefly describe two main reasons to use ‘Compression' in Multimedia. (c) All Multimedia development teams could have
Explain depth buffer method
Shearing - 2-D and 3-D transformations Shearing transformations are utilized for altering the shapes of 2 or 3-D objects. The consequence of a shear transformation seems like
Diffuse Reflection - Polygon Rendering & Ray Tracing Methods It is characteristic of light reflected from a non-shiny, dull surface. Objects illuminated solely through diff
What is run length encoding? Run length encoding is a compression method used to store the intensity values in the frame buffer, which keeps each scan line as a set of intege
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