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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.
Rotation - 2-d and 3-d transformations Given a 2-D point P(x,y), that we want to rotate, along with respect to an arbitrary point A(h,k). Suppose P'(x'y') be the effect of ant
IFF: It is Amiga Interchange File Format which is used to transfer documents to and from Commodore Amiga Computers. This format is really flexible and permits images and text to b
What is character generation and explain it''s two method: 1> Bitmap method 2> outline method.
Problem: a. Explain briefly six Ancillary Operations? b. When do ancillary operations take place? c. (i) What is flexography? (ii) Provide examples of finished produ
Modelling and Rendering a surface Common practice in modelling and rendering a surface is to approximate it by a polygonal surface. By a polygonal surface we mean a surface whi
Question: Explain how computer graphics would play a useful role in education and training. Answer: Computer graphics has occupied an important role in education and training.
Horizontal retrace - Display Devices In a refresh CRT monitor, the time it takes for an electron beam to return to the left most point on the next horizontal line after refresh
What is uniform rational splines
Interrupts - Event driven devices Interrupts: An option to polling is the interrupt feature. The device sends an interrupt signal to the processor while an event happens. T
Three Dimensional Concepts and Display Methods Imagine yourself taking a picture by a camera. What do you normally do? You specify a viewpoint and view direction and then s
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