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Merge pull request #206 from tschaub/interim-tiles

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Share common code to find loaded tiles
This commit is contained in:
Tim Schaub
2013-02-20 00:52:49 -08:00
parent efefb2554a 80dc7b5bf7
commit 689f8c9d9d
5 changed files with 297 additions and 77 deletions
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31
src/ol/renderer/canvas/canvastilelayerrenderer.js
View File

@@ -129,30 +129,11 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
var tilesToDrawByZ = {};
tilesToDrawByZ[z] = {};
var findInterimTiles = function(z, tileRange) {
// FIXME this could be more efficient about filling partial holes
var fullyCovered = true;
var tile, tileCoord, tileCoordKey, x, y;
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
tileCoord = new ol.TileCoord(z, x, y);
tileCoordKey = tileCoord.toString();
if (tilesToDrawByZ[z] && tilesToDrawByZ[z][tileCoordKey]) {
return;
}
tile = tileSource.getTile(tileCoord);
if (!goog.isNull(tile) && tile.getState() == ol.TileState.LOADED) {
if (!tilesToDrawByZ[z]) {
tilesToDrawByZ[z] = {};
}
tilesToDrawByZ[z][tileCoordKey] = tile;
} else {
fullyCovered = false;
}
}
}
return fullyCovered;
};
function isLoaded(tile) {
return !goog.isNull(tile) && tile.getState() == ol.TileState.LOADED;
}
var findLoadedTiles = goog.bind(tileSource.findLoadedTiles, tileSource,
tilesToDrawByZ, isLoaded);
var allTilesLoaded = true;
var tile, tileCenter, tileCoord, tileState, x, y;
@@ -180,7 +161,7 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
}
allTilesLoaded = false;
tileGrid.forEachTileCoordParentTileRange(tileCoord, findInterimTiles);
tileGrid.forEachTileCoordParentTileRange(tileCoord, findLoadedTiles);
}
}

31
src/ol/renderer/dom/domtilelayerrenderer.js
View File

@@ -93,30 +93,11 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
var tilesToDrawByZ = {};
tilesToDrawByZ[z] = {};
var findInterimTiles = function(z, tileRange) {
// FIXME this could be more efficient about filling partial holes
var fullyCovered = true;
var tile, tileCoord, tileCoordKey, x, y;
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
tileCoord = new ol.TileCoord(z, x, y);
tileCoordKey = tileCoord.toString();
if (tilesToDrawByZ[z] && tilesToDrawByZ[z][tileCoordKey]) {
return;
}
tile = tileSource.getTile(tileCoord);
if (!goog.isNull(tile) && tile.getState() == ol.TileState.LOADED) {
if (!tilesToDrawByZ[z]) {
tilesToDrawByZ[z] = {};
}
tilesToDrawByZ[z][tileCoordKey] = tile;
} else {
fullyCovered = false;
}
}
}
return fullyCovered;
};
function isLoaded(tile) {
return !goog.isNull(tile) && tile.getState() == ol.TileState.LOADED;
}
var findLoadedTiles = goog.bind(tileSource.findLoadedTiles, tileSource,
tilesToDrawByZ, isLoaded);
var allTilesLoaded = true;
var tile, tileCenter, tileCoord, tileState, x, y;
@@ -144,7 +125,7 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
}
allTilesLoaded = false;
tileGrid.forEachTileCoordParentTileRange(tileCoord, findInterimTiles);
tileGrid.forEachTileCoordParentTileRange(tileCoord, findLoadedTiles);
}

34
src/ol/renderer/webgl/webgltilelayerrenderer.js
View File

@@ -365,32 +365,12 @@ ol.renderer.webgl.TileLayer.prototype.renderFrame =
var tilesToDrawByZ = {};
tilesToDrawByZ[z] = {};
var findInterimTiles = function(z, tileRange) {
// FIXME this could be more efficient about filling partial holes
var fullyCovered = true;
var tile, tileCoord, tileCoordKey, x, y;
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
tileCoord = new ol.TileCoord(z, x, y);
tileCoordKey = tileCoord.toString();
if (tilesToDrawByZ[z] && tilesToDrawByZ[z][tileCoordKey]) {
return;
}
tile = tileSource.getTile(tileCoord);
if (!goog.isNull(tile) &&
tile.getState() == ol.TileState.LOADED &&
mapRenderer.isTileTextureLoaded(tile)) {
if (!tilesToDrawByZ[z]) {
tilesToDrawByZ[z] = {};
}
tilesToDrawByZ[z][tileCoordKey] = tile;
} else {
fullyCovered = false;
}
}
}
return fullyCovered;
};
function isLoaded(tile) {
return !goog.isNull(tile) && tile.getState() == ol.TileState.LOADED &&
mapRenderer.isTileTextureLoaded(tile);
}
var findLoadedTiles = goog.bind(tileSource.findLoadedTiles, tileSource,
tilesToDrawByZ, isLoaded);
var tilesToLoad = new goog.structs.PriorityQueue();
@@ -428,7 +408,7 @@ ol.renderer.webgl.TileLayer.prototype.renderFrame =
}
allTilesLoaded = false;
tileGrid.forEachTileCoordParentTileRange(tileCoord, findInterimTiles);
tileGrid.forEachTileCoordParentTileRange(tileCoord, findLoadedTiles);
}

40
src/ol/source/tilesource.js
View File

@@ -58,6 +58,46 @@ ol.source.TileSource.prototype.canExpireCache = goog.functions.FALSE;
ol.source.TileSource.prototype.expireCache = goog.abstractMethod;
/**
* Look for loaded tiles over a given tile range and zoom level. Adds
* properties to the provided lookup representing key/tile pairs for already
* loaded tiles.
*
* @param {Object.<number, Object.<string, ol.Tile>>} loadedTilesByZ A lookup of
* loaded tiles by zoom level.
* @param {function(ol.Tile): boolean} isLoaded A function to determine if a
* tile is fully loaded.
* @param {number} z Zoom level.
* @param {ol.TileRange} tileRange Tile range.
* @return {boolean} The tile range is fully covered with loaded tiles.
*/
ol.source.TileSource.prototype.findLoadedTiles = function(loadedTilesByZ,
isLoaded, z, tileRange) {
// FIXME this could be more efficient about filling partial holes
var fullyCovered = true;
var tile, tileCoord, tileCoordKey, x, y;
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
tileCoord = new ol.TileCoord(z, x, y);
tileCoordKey = tileCoord.toString();
if (loadedTilesByZ[z] && loadedTilesByZ[z][tileCoordKey]) {
continue;
}
tile = this.getTile(tileCoord);
if (isLoaded(tile)) {
if (!loadedTilesByZ[z]) {
loadedTilesByZ[z] = {};
}
loadedTilesByZ[z][tileCoordKey] = tile;
} else {
fullyCovered = false;
}
}
}
return fullyCovered;
};
/**
* @inheritDoc
*/