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sean hanna |
research | design | speculation | performance/interaction | publications | about me | |
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BODY
EXPANSIONS date: 2007
In these experiments for a series of body expansion works by Antony Gormley, the manual building of forms was paralleled by an algorithm so that the intuited rules of form generation could be systematically tested and clarified. In the many days required to build such forms by hand, a set of rules had been developed, and the experiments shown here are the final embodiments of these as implimented explicitly by the computer. The expansions are conceptually clear as offset uniformly from the surface of the body, and the degree of complexity in the number and placement of members are ideally suited to a model that can change parametrically and to changes in the pose. It has been in the best spirit of synergy between manual and digital methods, that each process illuminates and feeds the other. The task of codifying the process revealed several insights into the desired geometry: the use of a truncated 3-dimensional voronoi diagram is more appropriate than simple surface normals, and the form of the extrusion can be conceptualised as describing the edges of growing volumes in space rather than individual linear members. These ideas, tested far more rapidly in the parameterised digital model, will in turn inform the physical pieces being built by hand.
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Of particular importance are the internal surfaces formed by the intersection of expansions from different parts of the body. Shown in white in the diagrams, these form a boundary mid-way between the arm and leg, for example, or between the head and shoulder. While very difficult to visualise without the aid of a computer, they are revealed by the algorithm to have a smoothly curving geometry, and a pattern of open polyhedra resembling the outer mesh of the offset skin.
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