@quartic/bokehjs

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Interactive, novel data visualization

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import {proj4, mercator, wgs84} from "core/util/proj4" export class ProjectionUtils constructor: () -> @origin_shift = 2 * Math.PI * 6378137 / 2.0 geographic_to_meters: (xLon, yLat) -> return proj4(wgs84, mercator, [xLon, yLat]) meters_to_geographic: (mx, my) -> return proj4(mercator, wgs84, [mx, my]) geographic_extent_to_meters: (extent) -> [xmin, ymin, xmax, ymax] = extent [xmin, ymin] = @geographic_to_meters(xmin, ymin) [xmax, ymax] = @geographic_to_meters(xmax, ymax) return [xmin, ymin, xmax, ymax] meters_extent_to_geographic: (extent) -> [xmin, ymin, xmax, ymax] = extent [xmin, ymin] = @meters_to_geographic(xmin, ymin) [xmax, ymax] = @meters_to_geographic(xmax, ymax) return [xmin, ymin, xmax, ymax]