nl_tokens: Event handler for double clicks . Zooms in at clicked location
pl_tokens: function onDocumentDoubleClick ( <mask> ) { if ( config . minHfov === config . hfov ) { _this . setHfov ( origHfov , 1000 ) ; } else { var coords = mouseEventToCoords ( event ) ; _this . lookAt ( coords [ 0 ] , coords [ 1 ] , config . minHfov , 1000 ) ; } }