X-Git-Url: https://git-public.kairo.at/?p=lantea.git;a=blobdiff_plain;f=js%2Fmap.js;h=869ce2c13c2227a6a680afa2fd80f70fbdf0f43e;hp=2a65f780749b9f0da9abae3edecc66aa2e3cff87;hb=b47b4a65e0de47e607e0f675402e69239d012ad6;hpb=23cd2dcceff47d3ff6156c6c4fba913f2ee2f9b9 diff --git a/js/map.js b/js/map.js index 2a65f78..869ce2c 100644 --- a/js/map.js +++ b/js/map.js @@ -40,7 +40,22 @@ var gCanvas, gContext; 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 © OpenStreetMap contributors, CC-BY-SA'}, + osm_tilesathome: + {name: "OpenStreetMap (OSMarender)", + url: "http://tah.openstreetmap.org/Tiles/tile/{z}/{x}/{y}.png", + copyright: 'Map data and imagery © OpenStreetMap contributors, CC-BY-SA'}, + 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, OpenStreetMap and contributors, CC-BY-SA.'} +}; +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) @@ -55,9 +70,11 @@ var gTiles = {}; 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); @@ -73,11 +90,8 @@ window.onload = function() { gCanvas.addEventListener("DOMMouseScroll", mapEvHandler, false); gCanvas.addEventListener("mousewheel", mapEvHandler, false); - resizeAndDraw(); -} - -window.onresize = function() { - resizeAndDraw(); + document.getElementById("copyright").innerHTML = + gMapStyles[gActiveMap].copyright; } function resizeAndDraw() { @@ -85,7 +99,7 @@ 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; @@ -106,6 +120,15 @@ function zoomOut() { } } +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) { @@ -120,8 +143,9 @@ function normaliseIndices(x, y, z) { 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. @@ -162,7 +186,7 @@ function drawMap() { 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; @@ -170,10 +194,10 @@ function drawMap() { 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).