sha*_*kla 1 leaflet leaflet.draw
当我尝试使用Leaflet.Draw 插件绘制多段线时遇到问题。
首先,我点击地图绘制第一个点,然后第二次点击完成线。
但是,在我第二次单击该行后,该行不会自行完成。它显示了该行的扩展。
当我双击它时,该行完成,否则我需要手动单击完成按钮。我想在第二次点击地图时完成那条线。
这是我绘制折线的代码:
var drawControl = new L.Control.Draw({
position: 'topleft',
draw: {
polygon: {
allowIntersection: true,
showArea: true,
drawError: {
color: '#b00b00',
timeout: 1000
},
shapeOptions: {
color: '#0033ff'
}
},
circle: {
shapeOptions: {
color: '#0033ff'
}
},
polyline: {
shapeOptions: {
color: 'red'
},
},
rectangle: {
shapeOptions: {
color: '#0033ff'
}
},
marker: false,
polyline: true,
},
edit: {
featureGroup: drawnItems,
remove: true
}
});
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您可以在 javascript 中使用位于Leaflet.draw/src/draw/handler/Draw.Polyline.js 中的类覆盖addVertex函数,并在其末尾添加以下代码:L.Draw.Polylineprototype
markersLength = this._markers.length;
if (markersLength == 2) {
this._fireCreatedEvent();
this.disable();
}
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而且,这里是完整的代码:
L.Draw.Polyline.prototype.addVertex = function (latlng) {
var markersLength = this._markers.length;
// markersLength must be greater than or equal to 2 before intersections can occur
if (markersLength >= 2 && !this.options.allowIntersection && this._poly.newLatLngIntersects(latlng)) {
this._showErrorTooltip();
return;
}
else if (this._errorShown) {
this._hideErrorTooltip();
}
this._markers.push(this._createMarker(latlng));
this._poly.addLatLng(latlng);
if (this._poly.getLatLngs().length === 2) {
this._map.addLayer(this._poly);
}
this._vertexChanged(latlng, true);
markersLength = this._markers.length;
if (markersLength == 2) {
this._fireCreatedEvent();
this.disable();
}
};
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