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<html> <head> 

   <title>Köln - Was War Wo</title>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>

   <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"/>
   <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
   <link rel="stylesheet" href="https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.css" />
   <script src="https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.js"></script>

   <style>
       body { padding:10px; font-family:sans-serif; }
       #map-frame { border-radius:8px; }

#map { width: 100%; height: 88vh; /* größere Karte */ border: 3px solid black; border-radius: 10px; } 

       .legend { display:none; line-height:18px; color:#555; background:rgba(255,255,255,0.85); padding:10px; border-radius:5px; box-shadow:0 0 15px rgba(0,0,0,0.2); }
       .legend i { width:18px; height:18px; float:left; margin-right:8px; opacity:0.7; }
       .layerbox { background:rgba(255,255,255,0.9); padding:10px; border-radius:6px; box-shadow:0 0 10px rgba(0,0,0,0.3); font-size:14px; }
       .layerbox h4 { margin:0; cursor:pointer; }
       .layercontent { display:block; margin-top:8px; }
       .leaflet-bar button { cursor:pointer; font-weight:bold; }
       .layerbox b { display:block; margin-top:6px; }
       .search-input { width:100%; margin-bottom:6px; padding:4px; border:1px solid #ccc; border-radius:4px; }

.layerbox { background:rgba(255,255,255,0.9); padding:10px; border-radius:6px; box-shadow:0 0 10px rgba(0,0,0,0.3); font-size:14px; max-height:70vh; overflow-y:auto; }

#map-frame { position: relative; }

#map-title { position: absolute; top: 10px; left: 50%; transform: translateX(-50%); z-index: 1000; background: rgba(255,255,255,0.85); padding: 6px 14px; font-weight: bold; font-size: 18px; border-radius: 6px; box-shadow: 0 0 6px rgba(0,0,0,0.3); }

#map-footer { position: absolute; bottom: 10px; left: 10px; z-index: 1000; background: rgba(255,255,255,0.85); padding: 4px 10px; border-radius: 6px; font-size: 13px; box-shadow: 0 0 6px rgba(0,0,0,0.3); }

#map-footer a { color: red; text-decoration: none; font-weight: bold; }

</style> </head> <body>

Was War Wo

<script> 

   // --- Karte ---

var map = L.map('map',{ preferCanvas:true, tap: window.screen.width < 600, zoomSnap:0.5, zoomDelta:0.5 }).setView([50.95,6.95],12); 

   // --- Basemap ---
   var osm = L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {maxZoom:19, attribution:'© OpenStreetMap'});
   var satellite = L.tileLayer('https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}', {attribution:'Tiles © Esri'});
   osm.addTo(map);
   var baseMaps = {"Open Street Map":osm,"Satellit":satellite};
   L.control.layers(baseMaps).addTo(map);

   // --- Geocoder ---
   L.Control.geocoder({position:'topleft', defaultMarkGeocode:true, placeholder:"Suche ..."}).addTo(map);

   // --- Farben für Nutzungen ---
   var nutzungColors = {

'Hof':'red', 'Mühle':'blue', 'Fabrik':'black', 'Gewerbe':'gray', 'Verwaltung':'orange', 'Bahn':'brown', 'Brücke':'navy', 'Hafen':'blue', 'Flughafen':'green', 'Versorgung':'gray', 'Tankstelle':'maroon', 'Brauerei':'yellow', 'Ziegelei':'red', 'Kloster':'orange', 'Kirche':'purple', 'Synagoge':'violet', 'Krankenhaus':'red', 'Friedhof':'green', 'Hochbunker':'black', 'Militär':'green', 'Äußerer Festungsring 1873-1914':'red', 'Stadtumwallung 1882-1891':'orange', 'Umwallung Deutz 1818-1840':'gray', 'Innerer Festungsring 1816-1873':'navy', 'Enceinte 1815-1829':'yellow', 'Bastionen 1632-1689':'gray', 'Umwallung Mülheim 1588-1614':'darkblue', 'Umwallung Worringen':'purple', 'Stadtmauer 1180-1259':'maroon', 'Stadterweiterung 1106-1141':'lightblue', 'Stadterweiterung 950':'cyan', 'Römische Befestigung':'blue', 'Wohnen':'brown', 'Schule':'red', 'Freizeit':'green' 

   };

   // --- WMS-Historische Karten ---
   var wmsDOP2010 = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_hist_dop",{layers:"nw_hist_dop_2010",format:"image/png",transparent:true,opacity:0.6,attribution:"Orthophoto 2010"});
   var wmsDOP1998 = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_hist_dop",{layers:"nw_hist_dop_1998",format:"image/png",transparent:true,opacity:0.6,attribution:"Orthophoto 1998"});
   var wmsDOP1987 = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_hist_dop",{layers:"nw_hist_dop_1987",format:"image/png",transparent:true,opacity:0.6,attribution:"Orthophoto 1987"});
   var wmsDOP1981 = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_hist_dop",{layers:"nw_hist_dop_1981",format:"image/png",transparent:true,opacity:0.6,attribution:"Orthophoto 1981"});
   var wmsDOP1951 = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_hist_dop",{layers:"nw_hist_dop_1951",format:"image/png",transparent:true,opacity:0.6,attribution:"Orthophoto 1951"});

   var wmsMeyer = L.tileLayer("https://mapwarper.net/maps/tile/39790/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Meyers Stadtplan 1900"});
   var wmsKataster1836 = L.tileLayer("https://mapwarper.net/maps/tile/99312/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Kataster 1836"});
   var wmsKoeln1830 = L.tileLayer("https://mapwarper.net/maps/tile/101214/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Köln 1830"});
   var wmsVogtPicquet = L.tileLayer("https://mapwarper.net/maps/tile/39826/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Vogt/Picquet 1815"});
   var wmsNeuaufnahme = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_neuaufnahme",{layers:"nw_neuaufnahme",format:"image/png",transparent:true,opacity:0.6,attribution:"Neuaufnahme 1891-1912"});
   var wmsUraufnahme = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_uraufnahme",{layers:"nw_uraufnahme_rw",format:"image/png",transparent:true,opacity:0.6,attribution:"Uraufnahme 1836-1850"});
   var wmsTranchot = L.tileLayer.wms("https://www.wms.nrw.de/geobasis/wms_nw_tranchot",{layers:"nw_tranchot",format:"image/png",transparent:true,opacity:0.6,attribution:"Tranchot 1801-1828"});
   var wmsStockdale = L.tileLayer("https://mapwarper.net/maps/tile/39780/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Stockdale 1800"});
   var wmsReinhardt = L.tileLayer("https://mapwarper.net/maps/tile/41691/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Reinhardt 1752"});
   var wmsMerian = L.tileLayer("https://mapwarper.net/maps/tile/39783/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Merian 1641"});
   var wmsMercator = L.tileLayer("https://mapwarper.net/maps/tile/40952/{z}/{x}/{y}.png",{opacity:0.6, attribution:"Mercator 1571"});

   // --- GeoJSON Layer ---
   var geojsonLayer = L.geoJSON(null, {
       renderer: L.canvas(),
       style: function(feature){
           return { color: nutzungColors[feature.properties.Nutzung] || "black", weight: 2, fillOpacity:0.4 };
       }
   }).addTo(map);

   var highlightedLayers = [];

   // --- GeoJSON laden ---
   fetch('/alteskoeln/WasWarWo.geojson')
       .then(res => res.json())
       .then(data => {
           geojsonLayer.addData(data);
           buildLayerbox(data); // dynamische Layerbox für Gruppen & Nutzungen
       });

   // --- Klick auf Polygon ---

map.on('click', function(e){ var clickedFeatures = [];

highlightedLayers.forEach(layer => geojsonLayer.resetStyle(layer)); highlightedLayers = [];

geojsonLayer.eachLayer(function(layer){

if(!map.hasLayer(layer)) return; // nur sichtbare Features

if(layer instanceof L.Polygon && pointInLayer(e.latlng, layer)){ clickedFeatures.push(layer.feature.properties); highlightedLayers.push(layer); layer.setStyle({color:'yellow', weight:4, fillOpacity:0.6}); }

});

if(clickedFeatures.length > 0){ showPopup(clickedFeatures, e.latlng); } }); 

   function showPopup(features, latlng){

var content = "

"; 
       if(features.length > 1){
content += "
"+features.length+" historische Orte hier
"; 
       }
       features.forEach(function(props){
           var name = props.Name||"Unbekannt";
           var nutzung = props.Nutzung||"-";
           var von = props.von||"?";
           var bis = props.bis||"?";
           var info = props.Info||"";
           var bild = props.Bild ? '<a href="'+props.Bild+'" target="_blank"><img src="'+props.Bild+'" loading="lazy" style="width:100%;max-height:180px;object-fit:cover;border-radius:6px;margin-top:6px;"></a>' : ;
           var link = props.Link ? '
<a href="'+props.Link+'" target="_blank" style="color:blue;font-size:1em;">➔ Mehr Infos</a>' : ;
content += "
"+ 
                      ""+name+"
"+nutzung+"
"+
                      "Zeit: "+von+" bis "+bis+"
"+
"

"+info+"

"+bild+link+"
"; 
       });
content += "

"; 

       L.popup({maxWidth: window.innerWidth<600?300:400, minWidth:window.innerWidth<600?220:250, autoPanPadding:[20,20]})
           .setLatLng(latlng)
           .setContent(content)
           .openOn(map);

       // Zoom auf alle ausgewählten Flächen
       var group = L.featureGroup(highlightedLayers);
       map.fitBounds(group.getBounds(), {padding:[40,40], maxZoom:17});
   }

   // --- Punkt-in-Polygon ---
   function pointInLayer(latlng, layer){
       var lat = latlng.lat, lng = latlng.lng;
       var polys = layer.getLatLngs();
       if(layer.feature.geometry.type==="MultiPolygon"){
           return polys.some(polyPart => insidePolygon([lat,lng], polyPart[0]));
       }
       return insidePolygon([lat,lng], polys[0]);
   }
   function insidePolygon(point, vs){
       var x=point[0], y=point[1], inside=false;
       for(var i=0,j=vs.length-1;i<vs.length;j=i++){
           var xi=vs[i].lat, yi=vs[i].lng;
           var xj=vs[j].lat, yj=vs[j].lng;
           var intersect = ((yi>y)!=(yj>y)) && (x < (xj-xi)*(y-yi)/(yj-yi)+xi);
           if(intersect) inside = !inside;
       }
       return inside;
   }

   // --- Layerbox & Suche ---

function buildLayerbox(data){ var div = L.DomUtil.create('div','layerbox'); div.innerHTML = `

☰ Layer

<input type="text" id="searchName" placeholder="Suche nach Name ..." class="search-input"> Historische Orte

▶ Historische Karten

`; L.DomEvent.disableClickPropagation(div); layerBox = L.control({position:'topright'}); layerBox.onAdd = function(){ return div; }; layerBox.addTo(map);

// --- dynamische Gruppen & Nutzungen --- var gruppenDiv = document.getElementById('gruppen'); var groups = {}; data.features.forEach(f => { if(!groups[f.properties.Gruppe]) groups[f.properties.Gruppe] = {}; if(!groups[f.properties.Gruppe][f.properties.Nutzung]) groups[f.properties.Gruppe][f.properties.Nutzung] = 0; groups[f.properties.Gruppe][f.properties.Nutzung]++; });

for (var g in groups) { var gDiv = document.createElement('div');

// Flex-Container für Pfeil + Name + Gruppen-Checkbox gDiv.innerHTML = `

▶ ${g} <input type="checkbox" class="groupToggle" data-gruppe="${g}" checked>

`;

// Untercontainer für alle Nutzungen der Gruppe var inner = document.createElement('div'); inner.id = `g_${g}`; inner.style.marginLeft = "20px"; inner.style.display = "none"; // start geschlossen

for (var n in groups[g]) { var color = nutzungColors[n] || "black"; inner.innerHTML += `<label style="color:black; display:flex; align-items:center; gap:4px;"> <input type="checkbox" class="layerNutzung" data-gruppe="${g}" data-nutzung="${n}" checked> ${n} (${groups[g][n]}) </label>
`; }

gDiv.appendChild(inner); gruppenDiv.appendChild(gDiv); }

// Pfeil-Event separat, nur Pfeil klickbar document.querySelectorAll('.groupArrow').forEach(arrow => { arrow.addEventListener('click', function() { var targetId = this.dataset.target; var el = document.getElementById(targetId); if (!el) return;

var isHidden = (el.style.display === "none"); el.style.display = isHidden ? "block" : "none";

// Pfeil wechseln this.textContent = isHidden ? "▼" : "▶"; }); });

// --- Gruppen-Checkbox Event --- document.querySelectorAll('.groupToggle').forEach(cb => { cb.addEventListener('change', function(){ var gruppe = this.dataset.gruppe; var checked = this.checked; geojsonLayer.eachLayer(layer => { if(layer.feature.properties.Gruppe === gruppe){ if(checked) map.addLayer(layer); else map.removeLayer(layer); } }); // Auch Nutzung-Checkboxen aktualisieren document.querySelectorAll(`.layerNutzung[data-gruppe="${gruppe}"]`).forEach(nutzCb => { nutzCb.checked = checked; }); }); });

// --- Einzelne Nutzung Checkbox Event --- document.querySelectorAll('.layerNutzung').forEach(cb => { cb.addEventListener('change', function(){ var gruppe = this.dataset.gruppe; var nutzung = this.dataset.nutzung; geojsonLayer.eachLayer(layer => { if(layer.feature.properties.Gruppe===gruppe && layer.feature.properties.Nutzung===nutzung){ if(cb.checked) map.addLayer(layer); else map.removeLayer(layer); } }); // Gruppen-Checkbox anpassen var allChecked = Array.from(document.querySelectorAll(`.layerNutzung[data-gruppe="${gruppe}"]`)).every(nutzCb => nutzCb.checked); document.querySelector(`.groupToggle[data-gruppe="${gruppe}"]`).checked = allChecked; }); });

// --- Suche nach Name (gelb) --- document.getElementById('searchName').addEventListener('input', function(){ var val = this.value.toLowerCase(); highlightedLayers.forEach(layer => geojsonLayer.resetStyle(layer)); highlightedLayers = []; if(val === "") return; geojsonLayer.eachLayer(layer => { if(layer.feature.properties.Name && layer.feature.properties.Name.toLowerCase().includes(val)){ layer.setStyle({color:'yellow', weight:4, fillOpacity:0.6}); highlightedLayers.push(layer); } }); if(highlightedLayers.length){ map.fitBounds(L.featureGroup(highlightedLayers).getBounds(), {padding:[40,40], maxZoom:17}); } });

// --- Historische Karten Layer Toggle --- document.addEventListener('change', function(e){ if(e.target.id==="layerDOP2010") toggleLayer(wmsDOP2010,e.target.checked); if(e.target.id==="layerDOP1998") toggleLayer(wmsDOP1998,e.target.checked); if(e.target.id==="layerDOP1987") toggleLayer(wmsDOP1987,e.target.checked); if(e.target.id==="layerDOP1981") toggleLayer(wmsDOP1981,e.target.checked); if(e.target.id==="layerDOP1951") toggleLayer(wmsDOP1951,e.target.checked); if(e.target.id==="layerMeyer") toggleLayer(wmsMeyer,e.target.checked); if(e.target.id==="layerKataster1836") toggleLayer(wmsKataster1836,e.target.checked); if(e.target.id==="layerKoeln1830") toggleLayer(wmsKoeln1830,e.target.checked); if(e.target.id==="layerVogtPicquet") toggleLayer(wmsVogtPicquet,e.target.checked); if(e.target.id==="layerStockdale") toggleLayer(wmsStockdale,e.target.checked); if(e.target.id==="layerReinhardt") toggleLayer(wmsReinhardt,e.target.checked); if(e.target.id==="layerMerian") toggleLayer(wmsMerian,e.target.checked); if(e.target.id==="layerMercator") toggleLayer(wmsMercator,e.target.checked); if(e.target.id==="layerNeuaufnahme") toggleLayer(wmsNeuaufnahme,e.target.checked); if(e.target.id==="layerUraufnahme") toggleLayer(wmsUraufnahme,e.target.checked); if(e.target.id==="layerTranchot") toggleLayer(wmsTranchot,e.target.checked); });

function toggleLayer(layer,visible){ if(visible) map.addLayer(layer); else map.removeLayer(layer); }

// --- Transparenzregler --- var opacitySlider = document.getElementById('opacitySlider'); var historicalLayers = [ wmsDOP2010, wmsDOP1998, wmsDOP1987, wmsDOP1981, wmsDOP1951, wmsMeyer, wmsKataster1836, wmsKoeln1830, wmsVogtPicquet, wmsStockdale, wmsReinhardt, wmsMerian, wmsMercator, wmsNeuaufnahme, wmsUraufnahme, wmsTranchot ]; opacitySlider.addEventListener('input', function(){ var value = this.value / 100; historicalLayers.forEach(layer => { if(map.hasLayer(layer)) layer.setOpacity(value); else layer.options.opacity = value; }); }); }

// --- Toggle-Funktion mit Pfeil ▶ / ▼ --- function toggleGroup(id){ var el = document.getElementById(id); if(!el) return; var isHidden = (el.style.display==="none"); el.style.display = isHidden ? "block" : "none"; var bTag = el.previousElementSibling; if(bTag){ bTag.innerHTML = (isHidden ? "▼ " : "▶ ") + bTag.textContent.slice(2); } }

</script> </body> </html>

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