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This renders a polygon surface by linearly interpolating intensity values across the surface. Intensity values for each polygon are matched with the values of adjacent polygon along the common edges, thus eliminating the intensity discontinuities that can occur in flat shading. Each polygon surface is rendered with Gourand shading by performing the following calculation: (i) Determine the average unit normal vector at each polygon vertex. (ii) Apply an illumination model to each vertex to calculate the vertex intensity. (iii) Linearly interpolate the vertex intensities over the surface of the polygon. At each polygon vertex we obtain a normal vector by averaging the surface normal of all polygons sharing that vertex. Thus for vertex position V, we obtain the unit vertex normal width the calculation. One we have the vertex normal's, we determine the intensity at the vertices from a lightning model. Incremental calculations are used to obtain successive edge intensity values between scan lines and to obtain successive intensities along a scan line.
Light Pen - input and output devices It is a pointing device. This has a light sensitive tip that is excited while the light is emitted and an illuminated point upon the disp
Q. What is Monitor? A Monitor is a television like box connected to your computer and providing you a vision into the mind of your PC. It displays what your computer is thinki
Important Points about the Transformation for isometric projection Note: We can also verify such Isometric transformation matrix through checking all the foreshortening fact
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Define pixel and frame buffer? Pixel is shortened forms of picture element. Every screen point is referred to as pixel or pel. Picture definition is kept in a memory area c
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What is uniform rational splines
For this assignment, you will add to the drawing program new features that are similar to features that you already have. Apply object-oriented design concepts such as inheritance
Objectives of Curves and surfaces - modeling and rendering After going through the section, you should be capable to: Implement the methods utilized to represent a pol
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