128 lines
3.6 KiB
JavaScript
Executable File
128 lines
3.6 KiB
JavaScript
Executable File
/**
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* Background map
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*/
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function map(){
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var OS_API_KEY = 'NVUxtY5r8eA6eIfwrPTAGKrAAsoeI9E9';
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var light = L.tileLayer('https://api2.ordnancesurvey.co.uk/mapping_api/v1/service/zxy/{tilematrixSet}/{layer}/{z}/{x}/{y}.png?key={key}', {
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key: OS_API_KEY,
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tilematrixSet: 'EPSG:3857',
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layer: 'Light 3857'
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});
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var night = L.tileLayer('https://api2.ordnancesurvey.co.uk/mapping_api/v1/service/zxy/{tilematrixSet}/{layer}/{z}/{x}/{y}.png?key={key}', {
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key: OS_API_KEY,
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tilematrixSet: 'EPSG:3857',
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layer: 'Night 3857'
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});
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var baseMaps = {
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"Light": light,
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"Dark": night
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};
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var map = L.map('map', {
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layers: light,
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zoomControl: false,
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attributionControl: false,
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maxZoom: 18,
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minZoom: 7,
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center: ([51.507222, -0.1275]),
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zoom: 14,
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doubleClickZoom: false,
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});
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// Controls
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var attr = L.control.attribution({prefix: ""});
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attr.addAttribution("Contains OS data © Crown copyright: OS Maps baselayers and building outlines. Building attribute data is © Colouring London contributors");
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attr.addTo(map);
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L.control.zoom({position: 'topright'}).addTo(map);
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L.control.layers(baseMaps, {}, {position: 'topright'}).addTo(map);
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// Rendered layer
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var outline_layer = L.tileLayer('/tiles/outline/{z}/{x}/{y}.png', {
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maxZoom: 20,
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minZoom: 14
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})
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outline_layer.addTo(map);
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var highlight_layer = L.tileLayer('/tiles/highlight/{z}/{x}/{y}.png', {
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maxZoom: 20,
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minZoom: 14
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})
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var highlight_layer_added = false;
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// Query for building on click
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map.on('click', function(e){
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var lat = e.latlng.lat
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var lng = e.latlng.lng
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fetch(
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'/api/buildings?lat='+lat+'&lng='+lng
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).then(function(response){
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return response.json()
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}).then(function(data){
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if (data.geometry_id){
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highlight_layer.setUrl('/tiles/highlight/{z}/{x}/{y}.png?highlight='+data.geometry_id)
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}
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if (!highlight_layer_added && data.geometry_id){
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highlight_layer.addTo(map);
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}
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})
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})
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}
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/**
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* Simple carousel
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*
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* Based on example code by Christian Heilmann
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* http://christianheilmann.com/2015/04/08/keeping-it-simple-coding-a-carousel/
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*/
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carousel = function(){
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var box = document.querySelector('.carousel');
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if (!box) {
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return
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}
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var next = box.querySelector('.next');
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var prev = box.querySelector('.back');
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// Define the global counter, the items and the
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// current item
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var counter = 0;
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var items = box.querySelectorAll('.carousel-content li');
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var amount = items.length;
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var current = items[0];
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box.classList.add('active');
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// navigate through the carousel
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function navigate(direction) {
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// hide the old current list item
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current.classList.remove('current');
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// calculate the new position
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counter = (counter + direction) % amount;
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counter = counter < 0 ? amount - 1 : counter;
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// set new current element
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// and add CSS class
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current = items[counter];
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current.classList.add('current');
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}
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// add event handlers to buttons
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next.addEventListener('click', function(ev) {
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navigate(1);
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});
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prev.addEventListener('click', function(ev) {
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navigate(-1);
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});
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// show the first element
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// (when direction is 0 counter doesn't change)
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navigate(0);
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}
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/**
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* "Cut the mustard" and setup page
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*/
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if('querySelector' in document
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&& 'addEventListener' in window) {
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carousel();
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map();
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}
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