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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.
Polygonal Meshes - Clipping and 3D Primitives Apart from polygonal surfaces, polygonal meshes are also used extensively in 3D geometric modelling.A mesh is essentially a polyg
What is clipping? Explain Sutherland Hodgeman polygon clipping algorithm with example. OR Write the algorithm for Sutherland Hodgeman Polygon. Beginning with the initial set of p
Q. What are Bezier cubic curves? Derive their properties. OR What are Bezier cubic curves? Derive these properties. Also show that the sum of the blending functions is identical
What is meant by Addressability? Ans. Addressability is the number of individual dots per inch (d.p.i.) that can be formed. If the address of the current dot is (x, y) then the
Global illumination model -polygon rendering This illumination model adds to the local model the light which is reflected from the other surfaces to the current surface. This
Consider at line segment AB in the Figure k, parallel to the z-axis along with end points A (3, 2, 4) and B (3, 2, 8). Perform a perspective projection on the z = 0 plane from the
What is resolution? Ans. The maximum number of points that can be shown without an overlap on a CRT is known as resolution.
The goal of this assignment is to implement procedures/functions using x86 assembly. In addition to implementing procedures/functions, this assignment requires to pass arguments us
What are the advantages of electrostatic plotters? They are faster than pen plotters and very high quality printers. Recent electrostatic plotters contain a scan-conv
what is vecgen algorithm and bresenham linequestion..
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