With OpenLayers 2.13, I want to draw a circle and obtain its radius at each mousemove. The radius would then be returned as arguments of a callback function, for example. But of course, this is not the problem here.
I have tried several ways but none of the worked the way I want:
I tried to change the "move" method in OpenLayers.Handler.RegularPolygon, adding a custom event in the control of the handler. It worked but, it does not fit my needs, because:
- I can only calculate the "normal" length, and not the "geodesic" length. So, I never get a correct radius.
- By the way, changing the core of OpenLayers doesn't seem very clean to me, nor safe!
Using OpenLayers.Control.Measure together with OpenLayers.Control.DrawFeatiure, seemed to be the best option to me. I registered an event for "measurepartial", but it didn't return anything. The "measurepartial" event is not triggered when drawing a circle (RegularPolygon) because there is no point being added (I suppose this is the reason).
- In this question, it is asked something very similar to what I ask, bt there was no good answer for y case, so I tried to investigate it and post my own question.
- In this question, I found the exact same problem as mine, and it is based on this that I applied METHOD A.
I would rather use something like METHOD B, but I don't know how. The "measurepartial" event is not triggered when using RegularPolygon.
I didn't post code, because it is work-related. And by the way, I think I explained everything that needed to be told.