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Line-drawing algorithms for parallel machines

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1 Author(s)
Pang, A.T. ; California Univ., Santa Cruz, CA, USA

The fact that conventional line-drawing algorithms, when applied directly on parallel machines, can lead to very inefficient codes is addressed. It is suggested that instead of modifying an existing algorithm for a parallel machine, a more efficient implementation can be produced by going back to the invariants in the definition. Popular line-drawing algorithms are compared with two alternatives; distance to a line (a point is on the line if sufficiently close to it) and intersection with a line (a point on the line if an intersection point). For massively parallel single-instruction-multiple-data (SIMD) machines (with thousands of processors and up), the alternatives provide viable line-drawing algorithms. Because of the pixel-per-processor mapping, their performance is independent of the line length orientation.<>

Published in:

Computer Graphics and Applications, IEEE  (Volume:10 ,  Issue: 5 )

Date of Publication:

Sept. 1990

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