Show HN: 2D field of view demo
In case someone is interested in the design:https://bbcdn.githack.com/rmsundaram/tryouts/raw/e06259fffad...Devising the algorithm took around a month; did it in my free time. The implementation took a week, in HTML5 Canvas/JavaScript. Doing a 360°, not-bound-by-distance FoV would have been simpler, but FoV limited by both angle and distance took time.The idea is to find the field of view of an observer on a map with blocking buildings (polygons) and also to service a line of sight query, to know if a given point is visible to the observer.The code contains enough comments including citations and references to articles and books. Here's the actual repo from where the above page is served:http://bitbucket.org/rmsundaram/tryouts/src/master/CG/WebGL/...