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| Q15: | How are fractal mountains generated? |
| A15: | Usually by a method such as taking a triangle, dividing it into 3 |
sub-triangles, and perturbing the center point. This process is then repeated |
on the sub-triangles. This results in a 2-d table of heights, which can then |
be rendered as a 3-d image. This is referred to as midpoint displacement. Two |
references are: |
1. M. Ausloos, Proc. R. Soc. Lond. A 400 (1985), pp. 331-350. |
2. H.O. Peitgen, D. Saupe, The Science of Fractal Images, Springer-Velag, |
1988 |
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Available online is an implementation of fractal Brownian motion (fBm) such |
as described in The Science of Fractal Images. Lucasfilm became famous for its |
fractal landscape sequences in Star Trek II: The Wrath of Khan the primary one |
being the Genesis planet transformation. Pixar and Digital Productions are |
have produced fractal landscapes for Hollywood. |
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Fractal landscape information available online: |
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EECS News: Fall 1994: Building Fractal Planets by Ken Musgrave |
http://www.seas.gwu.edu/faculty/musgrave/article.html |
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Gforge and Landscapes (John Beale) |
http://www.best.com/~beale/ |
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