133 lines
3.7 KiB
JavaScript
Executable File
133 lines
3.7 KiB
JavaScript
Executable File
/**
|
|
* Background map
|
|
*/
|
|
function map(){
|
|
var OS_API_KEY = 'NVUxtY5r8eA6eIfwrPTAGKrAAsoeI9E9';
|
|
|
|
var light = L.tileLayer('https://api2.ordnancesurvey.co.uk/mapping_api/v1/service/zxy/{tilematrixSet}/{layer}/{z}/{x}/{y}.png?key={key}', {
|
|
key: OS_API_KEY,
|
|
tilematrixSet: 'EPSG:3857',
|
|
layer: 'Light 3857'
|
|
});
|
|
|
|
var night = L.tileLayer('https://api2.ordnancesurvey.co.uk/mapping_api/v1/service/zxy/{tilematrixSet}/{layer}/{z}/{x}/{y}.png?key={key}', {
|
|
key: OS_API_KEY,
|
|
tilematrixSet: 'EPSG:3857',
|
|
layer: 'Night 3857'
|
|
});
|
|
|
|
var baseMaps = {
|
|
"Light": light,
|
|
"Dark": night
|
|
};
|
|
|
|
var map = L.map('map', {
|
|
layers: light,
|
|
zoomControl: false,
|
|
attributionControl: false,
|
|
maxZoom: 18,
|
|
minZoom: 7,
|
|
center: ([51.5245255, -0.1338422]),
|
|
zoom: 16,
|
|
doubleClickZoom: false,
|
|
});
|
|
|
|
// Controls
|
|
var attr = L.control.attribution({prefix: ""});
|
|
attr.addAttribution("Contains OS data © Crown copyright: OS Maps baselayers and building outlines. Building attribute data is © Colouring London contributors");
|
|
attr.addTo(map);
|
|
L.control.zoom({position: 'topright'}).addTo(map);
|
|
L.control.layers(baseMaps, {}, {
|
|
position: 'topright',
|
|
autoZIndex: false
|
|
}).addTo(map);
|
|
|
|
// Rendered layer
|
|
var outline_layer = L.tileLayer('/tiles/date_year/{z}/{x}/{y}.png', {
|
|
maxZoom: 20,
|
|
minZoom: 14
|
|
})
|
|
outline_layer.setZIndex(10);
|
|
outline_layer.addTo(map);
|
|
|
|
var highlight_layer = L.tileLayer('/tiles/highlight/{z}/{x}/{y}.png', {
|
|
maxZoom: 20,
|
|
minZoom: 14
|
|
})
|
|
highlight_layer.setZIndex(20);
|
|
var highlight_layer_added = false;
|
|
|
|
// Query for building on click
|
|
map.on('click', function(e){
|
|
var lat = e.latlng.lat
|
|
var lng = e.latlng.lng
|
|
fetch(
|
|
'/api/buildings?lat='+lat+'&lng='+lng
|
|
).then(function(response){
|
|
return response.json()
|
|
}).then(function(data){
|
|
if (data.geometry_id){
|
|
highlight_layer.setUrl('/tiles/highlight/{z}/{x}/{y}.png?highlight='+data.geometry_id)
|
|
}
|
|
if (!highlight_layer_added && data.geometry_id){
|
|
highlight_layer.addTo(map);
|
|
}
|
|
})
|
|
})
|
|
|
|
}
|
|
|
|
/**
|
|
* Simple carousel
|
|
*
|
|
* Based on example code by Christian Heilmann
|
|
* http://christianheilmann.com/2015/04/08/keeping-it-simple-coding-a-carousel/
|
|
*/
|
|
carousel = function(){
|
|
var box = document.querySelector('.carousel');
|
|
if (!box) {
|
|
return
|
|
}
|
|
var next = box.querySelector('.next');
|
|
var prev = box.querySelector('.back');
|
|
// Define the global counter, the items and the
|
|
// current item
|
|
var counter = 0;
|
|
var items = box.querySelectorAll('.carousel-content li');
|
|
var amount = items.length;
|
|
var current = items[0];
|
|
box.classList.add('active');
|
|
// navigate through the carousel
|
|
function navigate(direction) {
|
|
// hide the old current list item
|
|
current.classList.remove('current');
|
|
|
|
// calculate the new position
|
|
counter = (counter + direction) % amount;
|
|
counter = counter < 0 ? amount - 1 : counter;
|
|
// set new current element
|
|
// and add CSS class
|
|
current = items[counter];
|
|
current.classList.add('current');
|
|
}
|
|
// add event handlers to buttons
|
|
next.addEventListener('click', function(ev) {
|
|
navigate(1);
|
|
});
|
|
prev.addEventListener('click', function(ev) {
|
|
navigate(-1);
|
|
});
|
|
// show the first element
|
|
// (when direction is 0 counter doesn't change)
|
|
navigate(0);
|
|
}
|
|
|
|
/**
|
|
* "Cut the mustard" and setup page
|
|
*/
|
|
if('querySelector' in document
|
|
&& 'addEventListener' in window) {
|
|
carousel();
|
|
map();
|
|
}
|