Remove previous Polyline

[terrymainvis]

Hello,

I am using the seq functionality to display multiple polyline but I would like to remove the ones which have their animation finished (To avoid having too many lines drawn). I am trying to do it in the Motion.Event.Section callback, trying to remove the finished animation but no result so far. Am I missing something?

[Igor-Vladyka]

Hello.

In the Motion.Event.Section callback you will get only next layer so far. One of the options is to query for all layers and for each of them call layer.removeFrom(sequence); and layer.removeFrom(map); - this should definitelly remove it from everywhere.

[terrymainvis]

Thank you for your reply. It's almost working with something like this: (Not very clean solution but just trying to make it work for now) `

seq.on(leaflet.Motion.Event.Section , evt => {

  if (this.currentPolylineIndex > 2) {

    this.polylines[this.currentPolylineIndex - 2].removeFrom(this.map);

  }

  this.currentPolylineIndex ++;

});

` So as soon as I displayed 2 polylines, I start removing the first one and so on. Issue is that it seems that Section Event is not triggered only when starting to draw a polyline as I first thought. The doc says "Fires on each motion section change in L.Motion.Seq starting with first one", what does motion section changes means here?

[terrymainvis]

I solved my issue. Not sure if that's intended but any changes on the layers level makes the seq to start again. For instance, each time I was deleting a polyline, the seq was starting a new instance. Adding myLayer.off() before deleting it to prevent any event to be triggered solved my main issue.