Computer Graphics Part 4b (Drawing lines)

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Author:
simon123
ID:
216704
Filename:
Computer Graphics Part 4b (Drawing lines)
Updated:
2013-04-29 21:56:57
Tags:
computer graphics informatics science
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Description:
University of Edinburgh School of Informartics Copmuter Graphics (Level 10) Revision Cards created by Simon M.
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  1. Explain general idea of midpoint algorithm
  2. How is the midpoint algorithm implemented / decision made? Explain!
  3. Decision variable update (E was chosen)
  4. Decision variable update (NE was chosen)
  5. derive initial decision variable
  6. list equations for: d, dstart, dnew(E),dnew(NE) and the main advantage of the midpoint algorithm!
  7. what do you do for slopes that are not 0<m<1?
  8. Circle Drawing Midpoint (imlicit form of circle, d updates on E/NE chosen)
  9. What is the problem with the midpoint algorithm?
    Pixels are drawn as single line - aliasing occurs, i.e. unequal line intensity with change in angle. solution: gupta-sproull algoritm, antialiasing.

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