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282 lines
7.5 KiB
JavaScript
282 lines
7.5 KiB
JavaScript
(function() {
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// warning CHANGES TO THIS CODE NEED TO BE ROLLED BACK INTO leaflet.py
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var expandzoom, cell_layout, layoutxyz, tiler, tiles_wrapper, zoom;
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window.tiler = tiler = {};
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cell_layout = function(items) {
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return [
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{
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y: 0,
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x: 0,
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item: items[0]
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}, {
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y: 0,
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x: 1,
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item: items[1]
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}, {
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y: 1,
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x: 0,
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item: items[2]
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}, {
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y: 1,
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x: 1,
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item: items[3]
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}
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];
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};
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tiler.tiles_wrapper = tiles_wrapper = function(path, ext) {
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if (ext == null) { ext = "jpg"; }
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var ret = {};
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ret.get_tile_path = function(z, y, x) {
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return path + ("/z"+z+"y"+y+"x"+x+"."+ext);
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};
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return ret;
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};
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tiler.zoom = zoom = function(tiles, caption, url, x, y, z, maxzoom) {
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var c, i, k, kids, len, len1, node, r, ref, ref1;
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if (x == null) {
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x = 0;
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}
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if (y == null) {
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y = 0;
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}
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if (z == null) {
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z = 0;
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}
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if (maxzoom == null) {
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maxzoom = 3;
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}
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node = {};
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if (caption && x === 0 && y === 0) {
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node['text'] = caption;
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}
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var lastc = Math.pow(2, z) - 1;
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if (url && x === 0 && y === lastc) {
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node['url'] = url
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}
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node['image'] = tiles.get_tile_path(z, y, x);
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node['class'] = "iz"+z;
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if (z < maxzoom) {
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kids = [];
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ref = [0, 1];
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for (i = 0, len = ref.length; i < len; i++) {
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r = ref[i];
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ref1 = [0, 1];
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for (k = 0, len1 = ref1.length; k < len1; k++) {
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c = ref1[k];
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kids.push(zoom(tiles, caption, url, (x * 2) + c, (y * 2) + r, z + 1, maxzoom));
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}
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}
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node['children'] = kids;
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}
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return node;
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};
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tiler.layoutxyz = layoutxyz = function(n, x, y, z, outnode) {
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var g, i, len, ref;
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if (x == null) {
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x = 0;
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}
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if (y == null) {
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y = 0;
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}
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if (z == null) {
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z = 0;
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}
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if (outnode == null) {
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outnode = {};
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}
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outnode[x + "," + y + "," + z] = n;
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if (n.children) {
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ref = cell_layout(n.children);
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for (i = 0, len = ref.length; i < len; i++) {
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g = ref[i];
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if (g.item) {
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layoutxyz(g.item, (x * 2) + g.x, (y * 2) + g.y, z + 1, outnode);
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}
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}
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}
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return outnode;
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};
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tiler.expandzoom = expandzoom = function(node) {
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var c, ret, tilespath;
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if (node.zoomable) {
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tilespath = node.image.replace(/\/[^\/]+$/, "");
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var ext = node.image.match(/\.([^\.]+)$/);
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if (ext != null) { ext = ext[1] };
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ret = zoom(tiles_wrapper(tilespath, ext), node.text, node.url);
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return ret;
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}
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if (node.children) {
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node.children = (function() {
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var i, len, ref, results;
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ref = node.children;
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results = [];
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for (i = 0, len = ref.length; i < len; i++) {
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c = ref[i];
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if (c != null) {
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results.push(expandzoom(c));
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}
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}
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return results;
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})();
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}
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return node;
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};
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/* DynamicTiles */
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/*
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A simple GridLayer extension that takes an external "nodes" object as option,
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Nodes are keyed [x,y,z]
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and expected to be of the form:
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{
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text: "My text",
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image" "imagepath.jpg"
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}
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*/
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L.GridLayer.DynamicTiles = L.GridLayer.extend({
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createTile: function (coords, done) { // done = (err, tile)
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// console.log("createTile", coords, this.options, this.options.nodes);
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// console.log("createTile", coords);
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var tile = document.createElement('div'),
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node = this.options.nodes[coords.x+","+coords.y+","+coords.z],
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defer = false;
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tile.classList.add("tile");
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if (node != undefined) {
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// console.log("NODE", node);
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if (node.image) {
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var img = document.createElement("img");
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defer = true;
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img.addEventListener("load", function () {
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done(null, tile);
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})
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img.src = node.image;
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tile.appendChild(img);
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img.classList.add("imagetile");
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}
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if (node.text) {
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//console.log("text", node.text);
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var textdiv = document.createElement("div");
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textdiv.innerHTML = node.text;
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tile.appendChild(textdiv);
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textdiv.classList.add("text");
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if (node.image) {
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textdiv.classList.add("textonimage");
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}
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}
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if (node.background) {
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tile.style.color = node.background;
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}
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if (node.class) {
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tile.classList.add(node.class);
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}
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tile.classList.add("z"+coords.z);
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} else {
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tile.innerHTML = [coords.x, coords.y, coords.z].join(', ');
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tile.classList.add("coords");
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}
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// tile.style.outline = '1px solid red';
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if (!defer) {
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window.setTimeout(function () {
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done(null, tile);
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}, 250);
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}
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return tile;
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}
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});""
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L.gridLayer.dynamicTiles = function(opts) {
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return new L.GridLayer.DynamicTiles(opts);
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};
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}).call(this);
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(function () {
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function getjson (url, callback) {
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var request = new XMLHttpRequest();
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request.open('GET', url, true);
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request.onload = function() {
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if (request.readyState == XMLHttpRequest.DONE && request.status >= 200 && request.status < 400) {
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callback(null, JSON.parse(request.responseText));
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} else {
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callback("server error");
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}
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};
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request.onerror = function() {
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callback("connection error");
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};
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request.send();
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}
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var TILESIZE = 256;
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var map = L.map('map', {
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editable: true,
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maxZoom: 50, // hangs past 50
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minZoom: 0,
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zoom: 0,
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crs: L.CRS.Simple,
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center: new L.LatLng(0,0),
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});
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// HASH! using https://github.com/mlevans/leaflet-hash
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var hash = new L.Hash(map);
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getjson("index.json", function (err, data) {
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var nodes = (tiler.layoutxyz(tiler.expandzoom(data)));
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map.addLayer( L.gridLayer.dynamicTiles({
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minZoom: 0,
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tileSize: TILESIZE,
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nodes: nodes
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}) );
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})
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var yx = L.latLng,
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xy = function(x, y) {
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if (L.Util.isArray(x)) { // When doing xy([x, y]);
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return yx(x[1], x[0]);
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}
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return yx(y, x); // When doing xy(x, y);
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};
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function absolutize (coords, scale, x, y) {
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// turns inkscape x,y relative path coords into absolute
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// nb flips the direction of the y axis as well
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if (scale == null) { scale = 1.0 }
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if (x == null) { x = 0.0 }
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if (y == null) { y = 0.0 }
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var c,
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out = [];
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for (var i=0, l=coords.length; i<l; i++) {
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c = coords[i];
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x += c[0]*scale; y -= c[1]*scale;
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out.push([x, y]);
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}
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return out;
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}
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var xpath = [[0,0], [-7.89063,-10.6836], [7.40235,0], [4.47265,6.48438], [4.53125,-6.48438], [7.40235,0], [-7.89063,10.64453], [8.28125,11.23047], [-7.40234,0], [-4.92188,-6.91406], [-4.86328,6.91406], [-7.40234,0], [8.28125,-11.1914]];
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xpath = absolutize(xpath, 10.3, 87, -128.5);
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// flip it
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xpath = xpath.map(function (x) { return [x[1], x[0]] });
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// x = x.map(function (x) { return yx(x) });
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var polyline = L.polyline(xpath, {color: '#dd2e57'}).addTo(map);
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map.setView(xy(0.5 * TILESIZE, -0.5 * TILESIZE), 0);
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var zoomslider = document.getElementById("zoom-slider");
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zoomslider.addEventListener("input", function () {
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// console.log("zoom", zoomslider.value);
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map.flyTo([-128.0,128],zoomslider.value);
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})
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})();
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