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QUESTION
(a) Consider the observer, façade, chain of responsibility and the iterator patterns.
i) Give detailed descriptions and draw their structures.
ii) Explain the interaction between each participant in the patterns using a sequence diagram.
iii) Give examples of situations where these patterns can be used and explain.
Icon Based or Event Driven Tools In such authoring systems, multimedia components and interaction cues or events are organized like objects in a structural process or framework
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
What is fixed point scaling? The location of a scaled object can be controlled by a position known as the fixed point that is to remain unchanged after the scaling transformat
Bezier Curves and Surfaces We had discussed in the previously that we can create complicated geometries along with the aid of polygon meshes that are further constituted of s
Raster and random scan displays In Raster scan displays, whole screen is refreshed a number of times in a second to keep the picture visible on the screen. This is called refre
explain interactive picture-construction techniques
Image Capture Formats: Video cameras appear in two various image capture formats: progressive and interlaced scan. Interlaced Scan It is a technique of enhancing the
Bitmap Graphics: The information below illustrates bitmap data. Bitmap images are a set of bits that form an image. The image comprises a matrix of individual dots or pixels wh
Understanding the Concept of hypertext and hypermedia: For know the principle of Hypertext and Hypermedia we will look at how the human memory works.
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