Three Dimensional Isovist Analysis Method
Abstract
This paper presents a three dimensional method of isovist analysis implemented in the MaxScript programming language. The script accepts as its input a standard three dimensional model of the buildings
and terrain being analyzed, upon which a N×N grid is projected. Each square of this grid is assigned a height value, thereby producing a simplified surface description which is amenable to mathematical analysis. A three dimensional isovist is then generated for each grid square, by placing an observation point 1.5 meters above its center and finding the intersection of a series of rays from this point to the input model. The distance from the observation point to the intersection is summed over for all the angles studied giving a compound isovist measurement for the grid square under consideration.
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Rodrigo Culagovski, is an architect/web developer based in Santiago, Chile. Teach and recently finished his master’s at the Architecture School of the Universidad Católica de Chile. The thesis topic was an application of three dimensional visiblity graph analysis to “weak heritage” sites.