src/leaflet-measure.js
function(evt) {
    if (!this._measureDrag) {
      this._measureDrag = L.circleMarker(evt.latlng, this._symbols.getSymbol('measureDrag')).addTo(
        this._layer
      );
    } else {
      this._measureDrag.setLatLng(evt.latlng);
    }
    this._measureDrag.bringToFront();
  }
function(evt) {
    if (!this._measureDrag) {
      this._measureDrag = L.circleMarker(evt.latlng, this._symbols.getSymbol('measureDrag')).addTo(
        this._layer
      );
    } else {
      this._measureDrag.setLatLng(evt.latlng);
    }
    this._measureDrag.bringToFront();
  }
function ( evt ) { if ( ! this . _measureDrag ) { this . _measureDrag = L . circleMarker ( evt . latlng , this . _symbols . getSymbol ( 'measureDrag' ) ) . addTo ( this . _layer ) ; } else { this . _measureDrag . setLatLng ( evt . latlng ) ; } this . _measureDrag . bringToFront ( ) ; }
mouse move handler while measure in progress adds floating measure marker under cursor
mouse move handler while measure in progress adds floating measure marker under cursor