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Illustration 1: How does the z-buffer algorithm find out which surfaces are hidden?
Solution: Depth or Z-buffer algorithm employs a two buffer area each of two-dimensional array, one z-buffer that stores the depth value at every pixel position (x,y), the other frame- buffer that stores the intensity values of the visible surface. From setting initial values of the z-buffer to several large number that frequently the distance of back clipping plane, the matter of determining such surfaces are closer is decreased to simply comparing the present depth values saved in the z-buffer at pixel (x,y) with the newly computed depth value at pixel (x,y). If this new value is less than represent depth-buffer value, this value replaces the value saved in the z-buffer and the pixel color value is altered to the color of the new surface.
what is raster scan systems
Differentiate among interpolation spline and approximation spline? When the spline curve passes by all the control points then it is known as interpolate. When the curve is
Write a program in C/C++ using OpenGL to create (without using built in function) a square by implementing shear algorithm along 1. X-axis, 2.Y-axis.
Need for Video Compression: T he high bit rates that result from the various types of digital video make their transmission through their intended channels very difficult. Eve
1. By using Digital Differential Analyzer algorithm draw line segments from point (1,1) to (9,7). Ans. We see that the usual equation of the line is specified by: y = mx+c
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What are the advantages of rendering polygons by scan line method? i. The max and min values of the scan were simply found. ii. The intersection of scan lines with edges i
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