Hello

I'd like to use a marker like a slider, that is as follows:

- given is a polyline and a marker
- the user should be able to take and drag the marker along the
polyline while the marker sticks to the line
- when the user releases the mouse button the marker should snap to
the nearest vertex and the coordinates of this vertex and the index of
the vertex should be returned

Any suggestions how to implement this using Google Maps API /
Javascript?

Thanks a lot
Markus

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