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TileStitcher class (anti-gap TileLayer)
Signed-off-by: Iván Sánchez Ortega <ivan@sanchezortega.es>
This commit is contained in:
Iván Sánchez Ortega
204
debug/tests/tile-stitcher.html
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204
debug/tests/tile-stitcher.html
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>Leaflet debug page - Tile Events</title>
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<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=0" />
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<link rel="stylesheet" href="../../dist/leaflet.css" />
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<link rel="stylesheet" href="../css/screen.css" />
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<style>
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#map {
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margin: 0;
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width: auto;
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}
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.redTile {
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border: red 1px solid;
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line-height: 256px;
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text-align: center;
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}
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table {
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border-collapse: collapse;
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}
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table th,
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table td {
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border: 1px #444 solid;
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margin: 0;
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}
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</style>
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<script type="importmap">
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{
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"imports": {
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"leaflet": "../../dist/leaflet-src.js"
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}
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}
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</script>
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</head>
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<body>
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<p>
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Keep track of how many tileload/tileunload events are being fired. The
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counts should always match. See
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<a href="https://github.com/Leaflet/Leaflet/issues/4093">#4093</a>,
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<a href="https://github.com/Leaflet/Leaflet/issues/4193">#4193</a>
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</p>
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<div id="map"></div>
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<table>
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<tr>
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<th></th>
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<th>Start</th>
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<th>Load</th>
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<th>Error</th>
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<th>Unload</th>
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<th>Visible</th>
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<th>
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Grid load
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<tr>
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<th>Grid</th>
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<td id="grid-tileloadstart"></td>
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<td id="grid-tileload"></td>
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<td id="grid-tileerror"></td>
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<td id="grid-tileunload"></td>
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<td id="grid-visible"></td>
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<td id="grid-load">
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<tr>
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<th>Positron</th>
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<td id="positron-tileloadstart"></td>
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<td id="positron-tileload"></td>
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<td id="positron-tileerror"></td>
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<td id="positron-tileunload"></td>
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<td id="positron-visible"></td>
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<td id="positron-load"></td>
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</tr>
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</td>
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</tr>
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</th>
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</tr>
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</table>
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<p>start = unload + visible on screen</p>
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<div><button id="dc">DC</button>(flyTo)</div>
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<div><button id="sf">SF</button>(setView, 5 sec)</div>
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<div><button id="trd">TRD</button>(flyTo 20 sec)</div>
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<div><button id="lnd">LND</button>(fract. zoom)</div>
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<div><button id="kyiv">KIEV</button>(setView, fract. zoom)</div>
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<div><button id="mad">MAD</button>(fitBounds)</div>
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<div><button id="nul">NUL</button>(image overlay)</div>
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<div><button id="stop">stop</button></div>
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<script type="module">
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import {Map, TileStitcher, TileLayer, GridLayer, Point, DomUtil} from 'leaflet';
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const kyiv = [50.5, 30.5];
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const lnd = [51.51, -0.12];
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const sf = [37.77, -122.42];
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const dc = [38.91, -77.04];
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const trd = [63.41, 10.41];
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const madBounds = [
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[40.7, -4.19],
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[40.12, -3.31],
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];
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const map = new Map('map', {
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center: [35, -122],
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zoom: 5.75,
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// zoom: 5,
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zoomSnap: 0.25,
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fadeAnimation: true,
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});
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const positron = new TileLayer('https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png');
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const grid = window.grid = new TileStitcher({
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attribution: 'Grid Layer',
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// tileSize: new Point(150, 80)
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tileSize: new Point(256, 256),
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zIndex: 5,
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});
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grid.createTile = function(coords, done) {
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var canvas = document.createElement('canvas');
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var tileSize = grid.getTileSize();
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canvas.setAttribute('width', tileSize.x);
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canvas.setAttribute('height', tileSize.y);
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = 'rgba(245,245,220,0.3)';
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ctx.fillRect(0, 0, tileSize.x, tileSize.y);
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ctx.strokeStyle = 'green';
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ctx.fillStyle = 'green';
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ctx.strokeRect(2, 2, tileSize.x - 4, tileSize.y - 4);
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ctx.font = (tileSize.x / 10) + "px Sans"
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ctx.fillText( coords.x + "," + coords.y + "," + coords.z,
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tileSize.x / 4 + Math.random() * 10,
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tileSize.y * 3/4 + Math.random() * 10);
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// return canvas.toDataURL();
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setTimeout(()=>{done(null, canvas)}, Math.random() * 500);
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return canvas;
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};
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const gridCounts = {
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tileload: 0,
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tileerror: 0,
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tileloadstart: 0,
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tileunload: 0,
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load: 0,
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};
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const positronCounts = {
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tileload: 0,
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tileerror: 0,
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tileloadstart: 0,
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tileunload: 0,
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load: 0,
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};
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grid.on('tileerror', (ev) => {
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debugger;
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});
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grid.on('tileload tileunload tileerror tileloadstart load', (ev) => {
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document.getElementById(`grid-${ev.type}`).innerHTML = ++gridCounts[ev.type];
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document.getElementById('grid-visible').innerHTML = grid._container.querySelectorAll('.leaflet-tile').length;
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});
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positron.on('tileload tileunload tileerror tileloadstart load', (ev) => {
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document.getElementById(`positron-${ev.type}`).innerHTML = ++positronCounts[ev.type];
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document.getElementById('positron-visible').innerHTML = positron._container.querySelectorAll('.leaflet-tile').length;
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});
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map.addLayer(positron);
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map.addLayer(grid);
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document.getElementById('dc').onclick = function () {
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map.flyTo(dc, 10);
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};
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document.getElementById('sf').onclick = function () {
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map.setView(sf, 10, {duration: 5, animate: true});
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};
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document.getElementById('trd').onclick = function () {
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map.flyTo(trd, 10, {duration: 20});
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};
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document.getElementById('lnd').onclick = function () {
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map.flyTo(lnd, 9.25);
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};
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document.getElementById('kyiv').onclick = function () {
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map.setView(kyiv, 9.25);
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};
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document.getElementById('nul').onclick = function () {
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map.flyTo([0, 0], 10);
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};
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document.getElementById('mad').onclick = function () {
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map.fitBounds(madBounds);
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};
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document.getElementById('stop').onclick = function () {
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map.stop();
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};
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</script>
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</body>
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</html>
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