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KaMap layer now sublasses initTiles, to implement the kamap 0-based tiling scheme instead of the OpenLayers/WW -180,-90 method. This means that there are no longer any restrictions on using ka-Map with other layers! woohoo! You can use ka-map on top of WorldWind, or with another ka-map layer, even if it has differently sized tiles. yay!

Browse Source 
git-svn-id: http://svn.openlayers.org/trunk/openlayers@764 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
crschmidt
2006-06-26 13:54:14 +00:00
parent 1912d4355c
commit a3e5944e4e
3 changed files with 71 additions and 3 deletions
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4
examples/kamap.html
View File

@@ -17,6 +17,8 @@
"http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'} );
var ka_wms = new OpenLayers.Layer.KaMap( "KaMap",
"http://freemap.in/~crschmidt/ka-map/ka-map-0.2-20060208/htdocs/tile.php?" , { map: 'gmap', g: 'roads' }, 'degrees', 72 );
var tiger = new OpenLayers.Layer.KaMap( "KaMap", "http://maps.dmsolutions.ca/demo/us_streets/tile.php", {map:'tiger04', g:'__base__'});
tiger.setTileSize(new OpenLayers.Size(300,300));
var jpl_wms = new OpenLayers.Layer.WMS( "NASA Global Mosaic",
"http://wms.jpl.nasa.gov/wms.cgi",
{layers: "modis,global_mosaic"});
@@ -24,7 +26,7 @@
map.addLayers([jpl_wms, ka_wms]);
map.addLayers([jpl_wms, ka_wms, tiger]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.setCenter(new OpenLayers.LonLat(0, 0), 0);
}

7
examples/tiger.html
View File

@@ -11,11 +11,14 @@
<script type="text/javascript">
<!--
function init(){
var map = new OpenLayers.Map('map', {'maxResolution': 1.2/4, controls:[]});
var map = new OpenLayers.Map('map', {'maxResolution': 1.40625/4, controls:[]});
var ka_wms = new OpenLayers.Layer.KaMap( "KaMap", "http://maps.dmsolutions.ca/demo/us_streets/tile.php", {map:'tiger04', g:'__base__'});
ka_wms.setTileSize(new OpenLayers.Size(300,300));
map.addLayers([ka_wms]); // , ka_wms, kamap_wms]);
var jpl_wms = new OpenLayers.Layer.WMS( "NASA Global Mosaic",
"http://wms.jpl.nasa.gov/wms.cgi",
{layers: "modis,global_mosaic"});
map.addLayers([jpl_wms,ka_wms]); // , ka_wms, kamap_wms]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.addControl(new OpenLayers.Control.MouseToolbar());
map.addControl(new OpenLayers.Control.PanZoomBar());

63
lib/OpenLayers/Layer/KaMap.js
View File

@@ -55,6 +55,69 @@ OpenLayers.Layer.KaMap.prototype =
return new OpenLayers.Tile.Image(this, position, bounds,
url, this.tileSize);
},
_initTiles:function() {
//first of all, clear out the main div
this.div.innerHTML = "";
//now clear out the old grid and start a new one
this.clearGrid();
this.grid = new Array();
var viewSize = this.map.getSize();
var bounds = this.map.getExtent();
var extent = this.map.getFullExtent();
var resolution = this.map.getResolution();
var tilelon = resolution*this.tileSize.w;
var tilelat = resolution*this.tileSize.h;
var offsetlon = bounds.left;
var tilecol = Math.floor(offsetlon/tilelon);
var tilecolremain = offsetlon/tilelon - tilecol;
var tileoffsetx = -tilecolremain * this.tileSize.w;
var tileoffsetlon = tilecol * tilelon;
var offsetlat = bounds.top;
var tilerow = Math.ceil(offsetlat/tilelat);
var tilerowremain = tilerow - offsetlat/tilelat;
var tileoffsety = -(tilerowremain+1) * this.tileSize.h;
var tileoffsetlat = tilerow * tilelat;
tileoffsetx = Math.round(tileoffsetx); // heaven help us
tileoffsety = Math.round(tileoffsety);
this.origin = new OpenLayers.Pixel(tileoffsetx,tileoffsety);
var startX = tileoffsetx;
var startLon = tileoffsetlon;
do {
var row = new Array();
this.grid.append(row);
tileoffsetlon = startLon;
tileoffsetx = startX;
do {
var tileBounds = new OpenLayers.Bounds(tileoffsetlon,
tileoffsetlat,
tileoffsetlon+tilelon,
tileoffsetlat+tilelat);
var tile = this.addTile(tileBounds,
new OpenLayers.Pixel(tileoffsetx - parseInt(this.map.layerContainerDiv.style.left),
tileoffsety - parseInt(this.map.layerContainerDiv.style.top))
);
tile.draw((this.params.TRANSPARENT == 'true'));
row.append(tile);
tileoffsetlon += tilelon;
tileoffsetx += this.tileSize.w;
} while (tileoffsetlon < bounds.right)
tileoffsetlat -= tilelat;
tileoffsety += this.tileSize.h;
} while(tileoffsetlat > bounds.bottom - tilelat)
},
/** @final @type String */
CLASS_NAME: "OpenLayers.Layer.KaMap"
});