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QUESTION
(a) Suppose that you have been assigned to re-engineer the existing systems for a company. Do you think that design patterns can be applied to these existing systems? Justify your answer.
(b) What are three reasons that cause requirements to change?
(c) What are the three reasons for using design patterns?
(d) What makes a Pattern a Pattern?
(e) What does Alexander means by the following statement "But it is impossible to form anything which has the character of nature by adding preformed parts.
Algorithms for filled-area primitives These algorithms are classified into two categories (i) Scan line algorithms (ii) Seed fill algorithms.
Graphic Primitives In previous section, we have discussed refreshing display devices and its categories which are Raster and Random Scan display devices. We have also discusse
Scan line algorithm and seed fill algorithm Two basic approaches are followed in area filling on raster systems. In the first approach overlap intervals for scan lines that cr
Object Space - approaches for visible surface determination The second approach as object-space that compares all objects directly along with each other inside the scene defin
What is meant by Addressability? The 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
Input and Output Devices - computer aided design Output and Input devices are quite significant for any software since an unsuitable selection of the concerned hardware may tu
Functioning of hardcopy devices and Output primitives 1. Functioning of hardcopy devices-laser printers and dot matrix printers, plotters. 2. Output primitives: Graphics
Painting and Drawing While we talk about graphics, we mean pictures can be either photographs or illustrations. If you want to acquire graphics into a Web page or multimedia r
basic video controller operations
Remark for Perspective projection - Transformation A Perspective projection can have at most three Principle Vanishing points and at any rate one Principle vanishing point. To
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