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Computer Graphics Part 2 (Object Representations)
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What is the problem in CG object representation?
What is the demand/need?
Real world is continuous and infinte
Computers represent things desicretely and resources are finite
need compact object representations that allows -> 1. quick loading 2. quick rendering
(Demand for continuous smooth surfaces that are easy to control)
Object representation approaches (list all 3)
Parametric surfaces
Metaballs
Mesh structures (Polygon format, triangle strip, triangle fans; Quad mesh)
Disadvantages (2) of increasing the degree of a parametric curve / explain alternative way/solution?
1. Not easy to control
2. Requires more computation
solution: concatenate, which means subdividing curves into sections (each of which has its own low order/degree parametric equation)
Problem with parametric curves?
Difficult to render objects that have a dynamically changing topology, i.e. blobby objects like liquid, clay etc.
Author
simon123
ID
215834
Card Set
Computer Graphics Part 2 (Object Representations)
Description
University of Edinburgh School of Informartics Computer Graphics (Level 10) Revision Cards created by Simon M.
Updated
2013-04-25T23:42:53Z
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