<html manifest="manifest.appcache">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
- <title>Lantea</title>
+ <title>Lantea Map</title>
<script src="js/map.js"></script>
<script src="js/ui.js"></script>
<link rel="stylesheet" href="style/lantea.css">
</head>
<body>
-<h1>Lantea</h1>
+<h1>Lantea Map</h1>
+
+<div id="overlayArea">
+<input type="button" id="zoomInButton" value="+"
+ onclick="zoomIn();">
+<input type="button" id="zoomOutButton" value="-"
+ onclick="zoomOut();"><br/>
+<input type="button" id="settingsButton" value="Settings"
+ onclick="toggleSettings();">
+<fieldset id="settings"><legend>Settings</legend>
+Map style:
+<select id="mapSelector" onclick="setMapStyle();">
+<!-- option value="osm_mapnik">OpenStreetMap (Mapnik)</option -->
+</select>
+</fieldset>
+</div>
<canvas id="map" width="500" height="500">
Please use a browser that supports <canvas> elements.
</canvas>
-<p id="copyright">Maps ©
-<a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors,
-<a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a></p>
+<p id="copyright"></p>
</body>
</html>
\ No newline at end of file
var gTileSize = 256;
var gMaxZoom = 18; // The minimum is 0.
-//drawMap();
+var gMapStyles = {
+ // OSM tile usage policy: http://wiki.openstreetmap.org/wiki/Tile_usage_policy
+ osm_mapnik:
+ {name: "OpenStreetMap (Mapnik)",
+ url: "http://tile.openstreetmap.org/{z}/{x}/{y}.png",
+ copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>'},
+ osm_tilesathome:
+ {name: "OpenStreetMap (OSMarender)",
+ url: "http://tah.openstreetmap.org/Tiles/tile/{z}/{x}/{y}.png",
+ copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>'},
+ mapquest_open:
+ {name: "MapQuest Open",
+ url: "http://otile1.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png",
+ copyright: 'Data, imagery and map information provided by MapQuest, <a href="http://www.openstreetmap.org/">OpenStreetMap</a> and contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>.'}
+};
+var gActiveMap = "osm_mapnik";
var gPos = {x: 35630000.0, // Current position in the map in pixels at the maximum zoom level (18)
y: 23670000.0, // The range is 0-67108864 (2^gMaxZoom * gTileSize)
var gDragging = false;
var gZoomTouchID;
-window.onload = function() {
+function initMap() {
gCanvas = document.getElementById("map");
gContext = gCanvas.getContext("2d");
+ if (!gActiveMap)
+ gActiveMap = "osm_mapnik";
gCanvas.addEventListener("mouseup", mapEvHandler, false);
gCanvas.addEventListener("mousemove", mapEvHandler, false);
gCanvas.addEventListener("DOMMouseScroll", mapEvHandler, false);
gCanvas.addEventListener("mousewheel", mapEvHandler, false);
- resizeAndDraw();
-}
-
-window.onresize = function() {
- resizeAndDraw();
+ document.getElementById("copyright").innerHTML =
+ gMapStyles[gActiveMap].copyright;
}
function resizeAndDraw() {
var viewportHeight = window.innerHeight;
var canvasWidth = viewportWidth * 0.98;
- var canvasHeight = (viewportHeight-110) * 0.98;
+ var canvasHeight = (viewportHeight - 100) * 0.98;
gCanvas.style.position = "fixed";
gCanvas.width = canvasWidth;
gCanvas.height = canvasHeight;
}
}
+function setMapStyle() {
+ var mapSel = document.getElementById("mapSelector");
+ if (mapSel.selectedIndex >= 0 && gActiveMap != mapSel.value) {
+ gActiveMap = mapSel.value;
+ gTiles = {};
+ drawMap();
+ }
+}
+
// A sane mod function that works for negative numbers.
// Returns a % b.
function mod(a, b) {
function tileURL(x, y, z) {
var norm = normaliseIndices(x, y, z);
- var url = "http://tile.openstreetmap.org/" + norm.z + "/" + norm.x + "/" + norm.y + ".png";
- return url;
+ return gMapStyles[gActiveMap].url.replace("{x}", norm.x)
+ .replace("{y}", norm.y)
+ .replace("{z}", norm.z);
}
// Returns true if the tile is outside the current view.
var z = Math.round(gPos.z);
var wid = gCanvas.width * Math.pow(2, gMaxZoom - z); // Width in level 18 pixels.
var ht = gCanvas.height * Math.pow(2, gMaxZoom - z); // Height in level 18 pixels.
- var sz = gTileSize * Math.pow(2, gMaxZoom - z); // Tile size in level 18 pixels.
+ var size = gTileSize * Math.pow(2, gMaxZoom - z); // Tile size in level 18 pixels.
var xMin = gPos.x - wid / 2; // Corners of the window in level 18 pixels.
var yMin = gPos.y - ht / 2;
var yMax = gPos.y + ht / 2;
// Go through all the tiles we want. If any of them aren't loaded or being loaded, do so.
- for (var x = Math.floor(xMin / sz); x < Math.ceil(xMax / sz); ++x) {
- for (var y = Math.floor(yMin / sz); y < Math.ceil(yMax / sz); ++y) {
- var xoff = (x * sz - xMin) / Math.pow(2, gMaxZoom - z);
- var yoff = (y * sz - yMin) / Math.pow(2, gMaxZoom - z);
+ for (var x = Math.floor(xMin / size); x < Math.ceil(xMax / size); x++) {
+ for (var y = Math.floor(yMin / size); y < Math.ceil(yMax / size); y++) {
+ var xoff = (x * size - xMin) / Math.pow(2, gMaxZoom - z);
+ var yoff = (y * size - yMin) / Math.pow(2, gMaxZoom - z);
var tileKey = encodeIndex(x, y, z);
if (gTiles[tileKey] && gTiles[tileKey].complete) {
// Round here is **CRUICIAL** otherwise the images are filtered and the performance sucks (more than expected).
projects / lantea.git / commitdiff