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Falke-Design avatar Falke-Design commented on June 11, 2024 1

It is a little bit complicated but this should work:

function cutListener(e){
  if(e.shape === 'Cut'){
    L.polygon(map.pm.Draw.Cut._layer.getLatLngs()).addTo(map);
  }
}

function removeCutListener(e){
  if(e.btnName === 'cutPolygon') {
    if (e.type === 'pm:buttonclick') {
      if (map.pm.globalCutModeEnabled()) {
        map.off('pm:actionclick pm:buttonclick', removeCutListener)
        map.off('pm:drawend', cutListener)
      }
    } else if (e.type === 'pm:actionclick') {
      if (e.text === 'Cancel') {
        map.off('pm:actionclick pm:buttonclick', removeCutListener)
        map.off('pm:drawend', cutListener)
      }
    }
  }
}

map.on('pm:drawstart',(e)=>{
  if(e.shape === 'Cut') {
    map.on('pm:actionclick pm:buttonclick', removeCutListener)
    map.once('pm:drawend', cutListener)
  }
})

from leaflet-geoman.

rp-ft avatar rp-ft commented on June 11, 2024

Cool thank you so much :-) I was thinking about a solution, where I could listen to, and collect, on "pm:vertexadded" on the draw start working layer and then recreate the polygon based on this, but your solution seems more elegant and simple.

from leaflet-geoman.

rp-ft avatar rp-ft commented on June 11, 2024

A followup question :-) Would It be possible to turn the process around and draw a polygon, and then based on this polygon, call "cut" functionality on the existing layers with the latlngs of the newly drawn polygon?

from leaflet-geoman.

Falke-Design avatar Falke-Design commented on June 11, 2024

@rp-ft you can do following:

// on map setup initialize Cut drawing
map.pm.enableDraw('Cut');
map.pm.disableDraw();

map.on('pm:create', (e)=>{
  if(e.shape === 'Polygon'){
    // prevent Layer from be cutted
    e.layer.pm.setOptions({allowCutting: false});
    
    map.pm.Draw.Cut._layer.setLatLngs(e.layer.getLatLngs()[0]);
    map.pm.Draw.Cut._finishShape();
    
    // allow cutting of Layer again
    e.layer.pm.setOptions({allowCutting: true});
  }
})

from leaflet-geoman.

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