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Found it.. var formatRadius = function(Circle) { var radius; if (geodesicCheckbox.checked) { var center = Circle.getCenter(); var pointOnPerimeter = [center[0], center[1] + Circle.getRadius()] var sourceProj = map.getView().getProjection(); var c1 = ol.proj.transform(center, sourceProj, ...


Old post, but came across it looking for drawing geodesic ellipsoids in OL3. If you just want to add it without creating a custom build, take a look at ellipsoid.js in the OL3 distro (ol\ol\ellipsoid). The vincenty methods appear to be in there without the greek symbols.

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