216 lines
8.1 KiB
JavaScript
216 lines
8.1 KiB
JavaScript
document.getElementById('body').onload = function(){
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/* Fonction de recentrage des svgOverlay dont le zéro est en haut à gauche
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alors qu'on le veut au milieu */
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// --------------------------------------------------------------------------
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function centrerSVG(latitudeLongitudeCentre,extension) {
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coinHautGaucheX = latitudeLongitudeCentre[0]+extension[0]/2
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coinHautGaucheY = latitudeLongitudeCentre[1]-extension[1]/2
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coinHautGauche = [coinHautGaucheX,coinHautGaucheY];
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coinBasDroiteX = latitudeLongitudeCentre[0]-extension[0]/2;
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coinBasDroiteY = latitudeLongitudeCentre[1]+extension[1]/2;
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coinBasDroite = [ coinBasDroiteX, coinBasDroiteY];
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return [[coinHautGaucheX,coinHautGaucheY],[coinBasDroiteX,coinBasDroiteY]];
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}
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// --------------------------------------------------------------------------
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// Déclaration des variables
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// --------------------------------------------------------------------------
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var centrePacifiqueSud = [-24.3763, -128.3184];
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var extensionPacifiqueSud = [50,50];
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var centrePacifiqueNord = [35, -180];
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var extensionPacifiqueNord = [100,100];
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var centreZero = [0, 0];
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var extensionZero = [90, 90];
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// La carte centrée et zoomée
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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var map = L.map('map', {
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center: [-7, -100],
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zoom: 2
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});//.setView([0, 0], 2);
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// Déclaration des fonds
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var baselayers = {
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osm:L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
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maxZoom: 19,
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attribution: '© <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
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}),
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stamen:L.tileLayer('https://stamen-tiles-{s}.a.ssl.fastly.net/watercolor/{z}/{x}/{y}.jpg', {
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maxZoom: 19,
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attribution: 'Map tiles by <a href="https://stamen.com">Stamen Design</a>, under CC BY 4.0. Data by <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>, under <a href="http://creativecommons.org/licenses/by/4.0">CC BY SA</a>.'
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})
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};
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// Ajout du fond par défaut
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baselayers.stamen.addTo(map);
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// Ajout du menu de changement de fonds
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L.control.layers(baselayers, null, {position: 'topright', collapsed : false }).addTo(map);
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// --------------------------------------------------------------------------
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// Définition des marqueurs
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var marker1 = L.marker([-42.5,69]).addTo(map)
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.bindPopup("La gyre de l'océan indien.")
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.openPopup();
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// --------------------------------------------------------------------------
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// Définition des cercles
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var rayon = 3000000
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// Un cercle orange, remplis vert transparent -------------------------------
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var cercle1 = L.circle([-45, -130], rayon, {
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color: 'black',
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fill: 'true',
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fillColor: '#101010',
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fillOpacity: 0.2,
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}).addTo(map)
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.bindTooltip("Gyre du Pacifique Sud",
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{
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permanent: true,
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direction: 'left',
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offset: [0,0]
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});
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// --------------------------------------------------------------------------
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// Définition des polygones
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// Un polygone
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/* var polygon1 = L.polygon([
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[61, -95],
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[61, 4.3],
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[7, 4.3],
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[7, -95]
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],{color: "green"}).addTo(map);
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*/
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// --------------------------------------------------------------------------
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// Définition des polylines
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var latlngs1 = [
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[0, -80],
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[0, 80]
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];
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var polyline = L.polyline(latlngs1, {color: 'green'}).addTo(map)
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.bindTooltip("Équateur : latitude 0°",
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{
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permanent: true,
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direction: 'right',
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offset: [60,0]
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});
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// --------------------------------------------------------------------------
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// Définition des overlays svg
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// La gyre de l'océan Indien
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var coin20_0 = L.latLng(0, 23);
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var coin0_20 = L.latLng(-65, 115);
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var bounds1 = L.latLngBounds(coin20_0, coin0_20);
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// Définition des calques (overlay)
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var svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");
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svgElement.setAttribute('xmlns', "http://www.w3.org/2000/svg");
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svgElement.setAttribute('viewBox', "0 0 100 100");
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svgElement.innerHTML = '<ellipse transform="rotate(-40 50 60)" cx="50" cy="60" rx="45" ry="30" stroke="black" stroke-opacity="1" fill-opacity="50%"/>';
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//svgElementBounds = centrerSVG(centreZero,extensionZero);
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//svgElementBounds = [map.layerPointToLatLng([0,0]),map.layerPointToLatLng([30,30])];
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var forme = L.svgOverlay(svgElement, bounds1);
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forme.addTo(map);
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// La gyre de l'Atlantique Sud
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var coin20_0 = L.latLng(0, -65);
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var coin0_20 = L.latLng(-70, 18);
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var bounds1 = L.latLngBounds(coin20_0, coin0_20);
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// Définition des calques (overlay)
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var svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");
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svgElement.setAttribute('xmlns', "http://www.w3.org/2000/svg");
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svgElement.setAttribute('viewBox', "0 0 100 100");
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svgElement.innerHTML = '<path d="M 85,15 C 100,40 85,85 15,85 C 0,85 50,-55 85,15" stroke="black" stroke-opacity="1" fill-opacity="0%"/>\
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<image xlink:href="images/Mollweide_Cycle.gif" x="30" y="20" height="50" width="50" />';
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//svgElementBounds = centrerSVG(centreZero,extensionZero);
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//svgElementBounds = [map.layerPointToLatLng([0,0]),map.layerPointToLatLng([30,30])];
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var forme = L.svgOverlay(svgElement, bounds1);
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forme.addTo(map);
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// --------------------------------------------------------------------------
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// Définition des images overlay
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var imageUrl = 'images/North_Pacific_Gyre.png';
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var errorOverlayUrl = 'https://cdn-icons-png.flaticon.com/512/110/110686.png';
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var altText = 'Wikipedia : https://commons.wikimedia.org/wiki/File:North_Pacific_Gyre.png';
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var latLngBounds = L.latLngBounds([[66.6, -254.5], [-15.5, -105.2]]);
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var imageOverlay = L.imageOverlay(imageUrl, latLngBounds, {
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opacity: 1,
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errorOverlayUrl: errorOverlayUrl,
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alt: altText,
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interactive: true
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}).addTo(map)
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.bindTooltip("Gyre du Pacifique Nord",
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{
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permanent: true,
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direction: 'right',
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offset: [0,0]
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});
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// -------------------------------------------------------------------------
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// Définition des vidéos overlay
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// Attention, pour remplir latLngBound, il faut mettre à fill la propriété
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// css object-fit de la balise video.
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var videoUrls = [
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'images/GyreAtlantiqueNordPetitPetit.mp4'
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];
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var errorOverlayUrl = 'https://cdn-icons-png.flaticon.com/512/110/110686.png';
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var latLngBounds = L.latLngBounds([[57, -100], [3.5, 13]]);
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var videoOverlay = L.videoOverlay(videoUrls, latLngBounds, {
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opacity: 0.6,
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errorOverlayUrl: errorOverlayUrl,
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interactive: true,
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autoplay: true,
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muted: true,
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playsInline: true,
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keepAspectRatio: false
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}).addTo(map);
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// --------------------------------------------------------------------------
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// Définition de la légende
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function getColor(d) {
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return d === 'Océaniques' ? "#5bc6da" :
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d === 'Terrestres' ? "#e5c7a9" :
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d === 'Polaires' ? "#dadcd2" :
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d === 'Désertiques' ? "#e2ddcf" :
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"#cd9474";
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}
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var legend = L.control({position: 'bottomleft'});
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legend.onAdd = function (map) {
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var div = L.DomUtil.create('div', 'info legend');
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labels = ['<strong>Surfaces</strong>'],
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categories = ['Océaniques','Terrestres','Polaires','Désertiques','Autres'];
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for (var i = 0; i < categories.length; i++) {
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div.innerHTML +=
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labels.push('<span style="display:inline-block;width:10px;height:10px;border-radius:5px;background:'+getColor(categories[i])+';"></span> '+categories[i]);
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}
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div.innerHTML = labels.join('<br>');
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return div;
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};
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legend.addTo(map);
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// --------------------------------------------------------------------------
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// Définition d'un grand cercle avec le plugin Leaflet.greatCircle permettant
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// des grand cercles correctement définis dans la projection de Mercator.
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var grandcercle = new L.greatCircle([-30, 110], {radius: 7000000});
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grandcercle.addTo(map);
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onMapClick = function(e){
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popup = L.popup()
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popup.setLatLng(e.latlng)
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lepoint = map.latLngToLayerPoint(e.latlng);
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popup.setContent("Position : "+e.latlng+" et "+lepoint)
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popup.openOn(map);
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//console.log("Coordinate: #{e.latlng}")
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}
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map.on('click', onMapClick)
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};
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