Leaflet.js - Draw polyline to nearest point from a location
Date : March 29 2020, 07:55 AM
This might help you Here's a working jsfiddle that answers the line problem. There is a method attached to the LatLng object called wrap that is supposed to help. I had to experiment a bit to get it work. I settled on if (Math.abs(loc1.lng - loc2.lng) > 180) {
latlongs = [loc1.wrap(179, -179), loc2];
}
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Leaflet - draw polyline vertices only
Date : March 29 2020, 07:55 AM
Hope this helps What you could do here is every time the polyline gets rendered, get the segments of it's SVG path, use those points to add SVG rectangle elements to the polyline's container: var polyline = L.Polyline([]).addTo(map),
list = polyline._path.pathSegList
// Iterate segments
for (var i = 0; i < list.length; i++) {
// Create SVG rectangle element
rectangle = document.createElementNS('http://www.w3.org/2000/svg', 'rect')
// Set rectangle size attributes
rectangle.setAttributeNS(null, 'height', 4)
rectangle.setAttributeNS(null, 'width', 4)
// Set position attributes, compensate for size
rectangle.setAttributeNS(null, 'x', list[i].x - 2)
rectangle.setAttributeNS(null, 'y', list[i].y - 2)
// Set rectangle color
rectangle.setAttributeNS(null, 'fill', 'red')
// Append rectangle to polyline container
polyline._container.appendChild(rectangle)
}
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How to draw polyline perpendicular to another polyline using Leaflet
Date : March 29 2020, 07:55 AM
Does that help No, Leaflet has no equivalent. You'll have to resort to a geodetic utility library for this kind of calculations. See cheap-ruler, geographiclib and Turf.js.
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How to draw a polyline using the mouse and leaflet.js
Date : March 29 2020, 07:55 AM
it helps some times As Julien V and IvanSanchez said, you can implement some of the draw-like plugins In example below: // center of the map
var center = [46.165164, 15.750443];
// Create the map
var map = L.map('map').setView(center,15);
// Set up the OSM layer
L.tileLayer(
'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: 'Data © <a href="http://osm.org/copyright">OpenStreetMap</a>',
maxZoom: 18
}).addTo(map);
// Initialise the FeatureGroup to store editable layers
var editableLayers = new L.FeatureGroup();
map.addLayer(editableLayers);
var options = {
position: 'topleft',
draw: {
polygon: {
allowIntersection: false, // Restricts shapes to simple polygons
drawError: {
color: '#e1e100', // Color the shape will turn when intersects
message: '<strong>Oh snap!<strong> you can\'t draw that!' // Message that will show when intersect
},
shapeOptions: {
color: '#97009c'
}
},
polyline: {
shapeOptions: {
color: '#f357a1',
weight: 10
}
},
// disable toolbar item by setting it to false
polyline: true,
circle: true, // Turns off this drawing tool
polygon: true,
marker: true,
rectangle: true,
},
edit: {
featureGroup: editableLayers, //REQUIRED!!
remove: true
}
};
// Initialise the draw control and pass it the FeatureGroup of editable layers
var drawControl = new L.Control.Draw(options);
map.addControl(drawControl);
var editableLayers = new L.FeatureGroup();
map.addLayer(editableLayers);
map.on('draw:created', function(e) {
var type = e.layerType,
layer = e.layer;
if (type === 'polyline') {
layer.bindPopup('A polyline!');
} else if ( type === 'polygon') {
layer.bindPopup('A polygon!');
} else if (type === 'marker')
{layer.bindPopup('marker!');}
else if (type === 'circle')
{layer.bindPopup('A circle!');}
else if (type === 'rectangle')
{layer.bindPopup('A rectangle!');}
editableLayers.addLayer(layer);
});
html, body, #map { margin: 0; height: 100%; width: 100%; }
<!DOCTYPE html>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.0-beta.2.rc.2/leaflet.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.0-beta.2.rc.2/leaflet.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/0.2.3/leaflet.draw.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/0.2.3/leaflet.draw.css" rel="stylesheet" />
<meta charset="utf-8">
<title>TEST</title>
</head>
<body>
<div id='map'></div>
</body>
</html>
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How to complete a Polyline in Leaflet.Draw after clicking second point?
Date : March 29 2020, 07:55 AM
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