lifo-dijkstraserv/htdocs/mapscript.js

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var editor_mode = 0;
var mymap;
var polyconf_show_street_names = 5; // Zoom level for when to start showing street names
var polyconf_show_cities = 5; /* City outlines will be filled on this level and further away */
var polyconf_show_districts = 4; /* Shown from polyconf_show_cities until this*/
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var streetLabelsRenderer = new L.StreetLabels({
collisionFlg: true,
propertyName: 'name',
showLabelIf: function (layer) {
switch (layer.geometry.type) {
case "LineString":
if (mymap.getZoom() <= polyconf_show_street_names)
return false;
break;
case "Polygon":
if (mymap.getZoom() > polyconf_show_street_names)
return false;
break;
default:
return false;
}
return true;
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},
fontStyle: {
dynamicFontSize: true,
fontSize: 10,
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fontSizeUnit: "px",
lineWidth: 3.0,
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fillStyle: "black",
strokeStyle: "white",
},
});
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streetLabelsRenderer._getDynamicFontSize = function (layer) {
zoom = mymap.getZoom();
switch (layer.geometry.type) {
case "LineString":
if (zoom <= 8)
return 11;
else
return 2**(zoom - 9) * 11;
break;
case "Polygon":
var size;
if (zoom >= 4)
size = 30;
else
size = 20;
switch (layer.properties.type) {
case "city":
break;
case "town":
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size *= 2.0/3.0;
break;
case "village":
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size *= 1.5/3;
break;
case "district":
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size *= 2.0/3;
break;
default:
size *= 0.5/3;
break;
}
return size;
default:
break;
}
return 10;
}
var style_outlines = {
radius: 8,
fillColor: "#ff7800",
color: "black",
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opacity: 1.0,
fillOpacity: 0.5
};
var style_streets = {
};
// Projection fix from: https://gis.stackexchange.com/questions/200865/leaflet-crs-simple-custom-scale
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var factorx = 1 / 256 * 4;
var factory = factorx;
var originx = 7000 + 8 + 0.5;
var originy = 7000 + 8 - 0.5;
var zoom_level_real = 6;
L.CRS.pr = L.extend({}, L.CRS.Simple, {
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projection: L.Projection.LonLat,
transformation: new L.Transformation(factorx,factorx * originx,-factory,factory * originy),
scale: function(zoom) {
return Math.pow(2, zoom);
},
zoom: function(scale) {
return Math.log(scale) / Math.LN2;
},
distance: function(latlng1, latlng2) {
var dx = latlng2.lng - latlng1.lng
, dy = latlng2.lat - latlng1.lat;
return Math.sqrt(dx * dx + dy * dy);
},
infinite: true
});
// Init map
mymap = L.map('mapid', {
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renderer: streetLabelsRenderer,
editable: true,
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crs: L.CRS.pr
}).setView([0, 0], 5);
var mapheight = 16384;
var mapwidth = mapheight;
var sw = mymap.unproject([0, 0], zoom_level_real);
var ne = mymap.unproject([mapwidth, mapheight], zoom_level_real);
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var layerbounds = new L.LatLngBounds(sw,ne);
var layers = L.control.layers({}, {}).addTo(mymap);
function load_svg(name, url, active=1) {
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var xhttp_ps = new XMLHttpRequest();
xhttp_ps.onreadystatechange = function() {
if (this.readyState == 4) {
if (this.status == 200) {
var svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");
svgElement.setAttribute('xmlns', "http://www.w3.org/2000/svg");
svgElement.setAttribute('viewBox', "0 0 16384 16384");
svgElement.innerHTML = xhttp_ps.responseText;
var svgElementBounds = [[0, 0], [1000, 1000]];
var overlay = L.svgOverlay(svgElement, svgElementBounds);
layers.addOverlay(overlay, name);
if (active)
overlay.addTo(mymap);
return overlay;
} else {
alert("Error: Could not load SVG map layer (" + name + ")");
}
}
}
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;
xhttp_ps.open("GET", url, true);
xhttp_ps.send();
}
function load_tiles(name, id) {
var satellite = L.tileLayer('https://notsyncing.net/maps.linux-forks.de/tiles/{id}/{z}/{y}/{x}.png', {
maxZoom: 14 /*8*/,
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maxNativeZoom: 6,
minNativeZoom: 0,
minZoom: 0,
noWrap: true,
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attribution: 'Map data &copy; <a href="https://wiki.linux-forks.de/mediawiki/index.php/Maps">Linux-Forks</a>',
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id: id,
tileSize: 256,
zoomOffset: 0,
opacity: 1.0,
bounds: layerbounds
});
layers.addBaseLayer(satellite, name);
return satellite;
}
var current_location = "";
var current_feature = null;
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function load_geojson(name, url, iconname, iconcolor, active=1, style={}) {
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var xhttp_ps = new XMLHttpRequest();
xhttp_ps.onreadystatechange = function() {
if (this.readyState == 4) {
if (this.status == 200) {
onEachFeature = null;
pointToLayer = null;
filter = null;
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switch (iconname) {
case "street":
onEachFeature = function(feature, layer) {
layer.myTag = iconname;
layer.myName = name;
layer.on("click", function (e) {
current_feature = feature;
});
};
break;
case "outline":
onEachFeature = function(feature, layer) {
layer.myTag = iconname;
layer.myName = name;
layer.on("click", function (e) {
current_location = feature.properties.name;
});
}
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break;
default: /* else it is a marker with the specified icon */
onEachFeature = function(feature, layer) {
label = String(feature.properties.name)
layer.bindPopup('<h1><a href="https://wiki.linux-forks.de/mediawiki/index.php/' + feature.properties.name + '">' + feature.properties.name + '</a> (' + feature.geometry.coordinates + ')</h1>' + '<p><img style="width:100%" src="' + feature.properties.image + '"></p>' + '<p>' + feature.properties.description + '</p>');
layer.bindTooltip(label, {
permanent: true,
direction: "center",
className: "city-names"
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}).openTooltip().on('click', jump_to_marker);
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};
pointToLayer = function(feature, latlng) {
label = String(feature.properties.name)
return new L.marker(latlng,{
icon: L.AwesomeMarkers.icon({
icon: iconname,
markerColor: iconcolor
})
}).bindTooltip(label, {
permanent: false,
direction: "center",
opacity: 0.7
}).openTooltip();
};
break;
}
var json = JSON.parse(xhttp_ps.responseText);
geojson = L.geoJSON(json, {
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style: style,
onEachFeature: onEachFeature,
pointToLayer: pointToLayer,
filter: filter
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});
layers.addOverlay(geojson, name);
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if (active)
geojson.addTo(mymap);
return geojson;
} else {
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console.log("Error: Could not load geojson map layer (" + name + ").");
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}
}
}
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;
xhttp_ps.open("GET", url, true);
xhttp_ps.send();
}
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load_tiles("Satellite (2020-04-09)", 'world-2020-04-09').addTo(mymap);
load_tiles("Satellite (2019-05-04, wrong coords)", 'world-2019-05-04');
//load_svg("Test", "./overlay.svg", 0);
load_geojson("Cities", "./geojson/cities.json", "city", "red");
load_geojson("Stations", "./geojson/stations.json", "train", "blue");
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load_geojson("Shops", "./geojson/shops.json", "shopping-cart", "green");
load_geojson("Parks", "./geojson/parks.json", "tree", "darkgreen");
load_geojson("Libraries", "./geojson/libraries.json", "book-open", "darkblue");
load_geojson("CW Complexes", "./geojson/cw_complexes.json", "border-all", "black");
load_geojson("Courts", "./geojson/courts.json", "balance-scale", "black");
load_geojson("Waterway", "./geojson/waterway.json", "water", "darkblue");
load_geojson("Train Depots", "./geojson/depots.json", "wrench", "violet");
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load_geojson("Streets", "./geojson/streets.json", "street", "blue", 0);
L.control.scale().addTo(mymap);
function resolve_latlng(latlng, recenter = 0) {
latlng.lng = Math.round(latlng.lng);
latlng.lat = Math.round(latlng.lat);
return latlng;
}
function get_current_location_str() {
var latlng = resolve_latlng(mymap.getCenter());
return latlng.lng + "," + latlng.lat + "," + mymap.getZoom();
}
/* Important: Do not use mymap.setView, use this function instead */
function jump_to(latlng, zoom = -1) {
if (zoom == -1)
zoom = mymap.getZoom();
if (!editor_mode) {
pos = resolve_latlng(latlng);
document.location.hash = "#" + pos.lng + "," + pos.lat + "," + zoom;
} else {
mymap.setView(latlng, zoom);
}
}
function jump_to_marker(e) {
jump_to(e.target.getLatLng());
}
function prompt_location() {
var str = prompt("Enter coordinates to jump to:\n\n" +
"Format: x, y [, zoom]", get_current_location_str());
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if (str) {
if (!editor_mode)
document.location.hash = "#" + str;
else
onHashChange(null, "#" + str);
}
}
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var search_element;
function toggle_search() {
if (el = document.getElementById('searchbar')) {
el.parentNode.removeChild(el);
return;
}
if (!search_element) {
search_element = document.createElement("div");
search_element.style.overflow = "scroll";
search_element.style.padding = "6px";
search_element.style.height = "100%";
search_element.innerHTML = '<input style="width:100%;" id="search_query" name="lifo_map_search" type="search" placeholder="Start typing to search..." oninput="search(event)"><div id="search_results"></div>' ;
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}
td = document.getElementById('windowtr').insertCell(0);
td.style.width = "400px";
td.style.borderRight = "1px solid black";
td.style.verticalAlign = "top";
td.id = "searchbar";
td.appendChild(search_element);
document.getElementById('search_query').select();
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}
function htmlEntities(str) {
return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
}
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function polyline_get_middle_coords(coords) {
var ret = [2];
ret[0] = coords[0][0] + (coords[coords.length - 1][0] - coords[0][0]) / 2;
ret[1] = coords[0][1] + (coords[coords.length - 1][1] - coords[0][1]) / 2;
return ret;
}
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var highlighted_line;
var default_street_color = "#3388ff";
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function search(e) {
var query = document.getElementById("search_query").value;
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document.getElementById('search_results').innerHTML = "";
if (true) {
if (query.length == 0)
query = "!@#$%^&"; // Cheap workaround to (hopefully) match nothing
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results = document.createElement("ul");
for (var i = 0; i < layers._layers.length; i++) {
if (!layers._layers[i].layer._layers)
continue;
for (key in layers._layers[i].layer._layers) {
item = layers._layers[i].layer._layers[key];
switch (item.feature.geometry.type) {
case "Point":
regex = new RegExp(query, 'i');
if (item.feature.properties.name.match(regex)) {
el = document.createElement("li");
el.innerHTML = "[" + layers._layers[i].name + "] " + '<a href="#" onclick="layers._layers[' + i + '].layer._layers[' + item._leaflet_id + '].fire(\'click\'); return false;">' + htmlEntities(item.feature.properties.name) + "</a>";
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results.appendChild(el);
}
break;
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case "LineString":
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if (item.options.color != default_street_color) { // De-hilight last search
item.options.color = default_street_color;
item.redraw();
}
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regex = new RegExp(query, 'i');
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if (item.feature.properties.name.match(regex)) {
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item.options.color = "#FF0000";
item.redraw();
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el = document.createElement("li");
zpos = polyline_get_middle_coords(item.feature.geometry.coordinates);
el.innerHTML = "[" + layers._layers[i].name + "] " + '<a href="#" onclick="latLng2 = L.latLng(' + zpos[1] + ',' + zpos[0] + '); jump_to(latLng2); return false;">' + htmlEntities(item.feature.properties.name) + "</a>";
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results.appendChild(el);
}
break;
case "Polygon":
regex = new RegExp(query, 'i');
if (item.feature.properties.name.match(regex)) {
el = document.createElement("li");
zpos = resolve_latlng(layers._layers[i].layer._layers[item._leaflet_id].getCenter());
el.innerHTML = "[" + layers._layers[i].name + "] " + '<a href="#" onclick="latLng2 = L.latLng(' + zpos.lat + ',' + zpos.lng + '); jump_to(latLng2, ' + polyconf_show_cities + '); return false;">' + htmlEntities(item.feature.properties.name) + "</a>";
results.appendChild(el);
}
break;
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default:
break;
}
}
}
document.getElementById('search_results').appendChild(results);
}
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return false;
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}
L.MyControl = L.Control.extend({
options: {
position: 'topleft',
callback: null,
kind: '',
html: ''
},
onAdd: function (map) {
var container = L.DomUtil.create('div', 'leaflet-control leaflet-bar'),
link = L.DomUtil.create('a', '', container);
link.href = '#';
link.title = this.options.title;
link.innerHTML = this.options.html;
L.DomEvent.on(link, 'click', L.DomEvent.stop)
.on(link, 'click', function () {
window.LAYER = this.options.callback.call();
}, this);
return container;
}
});
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L.SearchControl = L.MyControl.extend({
options: {
position: 'topleft',
callback: toggle_search,
title: 'Search',
html: '🔍'
}
});
L.GotoControl = L.MyControl.extend({
options: {
position: 'topleft',
callback: prompt_location,
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title: 'Jump to coordinates',
html: '⌖'
}
});
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mymap.addControl(new L.SearchControl());
mymap.addControl(new L.GotoControl());
var popup = L.popup();
L.AwesomeMarkers.Icon.prototype.options.prefix = 'fa';
var baseballIcon = L.AwesomeMarkers.icon({
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icon: 'coffee',
markerColor: 'red'
});
function onMapClick(e) {
var addinfo = "";
if (current_location != "")
addinfo = " (part of " + current_location + ")";
if (current_feature) {
popup.setLatLng(e.latlng).setContent("This is " + current_feature.properties.name + addinfo).openOn(mymap);
} else {
pos = resolve_latlng(e.latlng);
popup.setLatLng(e.latlng).setContent("You clicked the map at " + pos.lng + "," + pos.lat + addinfo).openOn(mymap);
}
current_feature = null;
current_location = "";
}
mymap.on('click', onMapClick);
var is_user_drag = 0;
function update_hash_from_position(e) {
if (is_user_drag)
is_user_drag = 0;
else
return;
if (!editor_mode)
document.location.hash = "#" + get_current_location_str();
}
function dragstart(e) {
is_user_drag = 1;
}
function update_aa_status() {
if (mymap.getZoom() > zoom_level_real)
document.getElementById('mapid').classList.add("no-aa");
else
document.getElementById('mapid').classList.remove("no-aa");
}
function update_street_width() {
zoom = mymap.getZoom();
var w;
if (zoom <= 6) {
w = 2;
} else {
w = 2**zoom * 0.016 * 2;
}
var myStyle = {weight: w, opacity: 0.7};
mymap.eachLayer( function(layer) {
if ( layer.myTag && layer.myTag === "street") {
layer.setStyle(myStyle);
}
});
}
function update_outline_visibility() {
zoom = mymap.getZoom();
mymap.eachLayer( function(layer) {
if ( layer.myTag && layer.myTag === "outline") {
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var fillOpacity;
if (zoom <= polyconf_show_cities)
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fillOpacity = 0.5;
//else if (zoom == polyconf_show_cities + 1)
// opacity = 0.2;
else
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fillOpacity = 0.0;
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layer.setStyle({fillOpacity: fillOpacity});
}
});
}
mymap.on('zoomend', function () {is_user_drag = 1; update_hash_from_position();});
mymap.on('zoomend', update_aa_status);
mymap.on('zoomend', update_street_width);
mymap.on('zoomend', update_outline_visibility);
mymap.on('moveend', update_hash_from_position);
mymap.on('dragstart', function () { is_user_drag = 1;});
mymap.on('keydown', function (e) { if (e.originalEvent.code.match(/Arrow.*/)) is_user_drag = 1;});
mymap.on('overlayadd', function (e) { update_street_width(); update_outline_visibility(); });
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function onHashChange(e, hash=null) {
if (!hash)
hash = document.location.hash;
if (hash == "#" + get_current_location_str())
return; // We're already there
coordstr = decodeURIComponent(hash.slice(1)).split(",");
if (coordstr.length < 2)
coordstr.push(0); // Default y
if (coordstr.length < 3)
coordstr.push(mymap.getZoom()); // Default zoom
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var latlng = L.latLng(parseFloat(coordstr[1]), parseFloat(coordstr[0]));
mymap.setView(latlng, parseInt(coordstr[2]));
if (coordstr.length > 3) { /* Drop named marker */
foo = L.marker(latlng).bindPopup(htmlEntities(coordstr[3])).addTo(mymap).openPopup();
}
}
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window.addEventListener("hashchange", onHashChange, false);
onHashChange(null);