Computer Graphics Part 4a (Drawing lines)

  1. describe the process of drawing a line
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  2. Why does a simple line algorithm (increment x, calculate x, parse int) not work for line drawing?
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  3. what does DDA mean? give parametrix form of a line..
    • DDA = Digital Differential Analyser
    • (finite differences)

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  4. Explain how the DDA algorithm works
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  5. What is the problem with the DDA algorithm?
    There is a lot of floating point arithmetic: 2 "rounds" and 2 adds per pixel

    -> Integer arithmetic is easier to implement in hardware
Card Set
Computer Graphics Part 4a (Drawing lines)
University of Edinburgh School of Informartics Copmuter Graphics (Level 10) Revision Cards created by Simon M.