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Make preload a number of levels instead of a boolean

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This commit is contained in:
Tom Payne
2013-03-27 14:34:20 +01:00
parent 421135b3e7
commit 66c6a8a3e0
8 changed files with 13 additions and 13 deletions
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4
src/ol/renderer/layerrenderer.js
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@@ -291,7 +291,7 @@ ol.renderer.Layer.prototype.snapCenterToPixel =
* @param {ol.Projection} projection Projection.
* @param {ol.Extent} extent Extent.
* @param {number} currentZ Current Z.
* @param {boolean} preload Preload low resolution tiles.
* @param {number} preload Load low resolution tiles up to 'preload' levels.
* @param {function(this: T, ol.Tile)=} opt_tileCallback Tile callback.
* @param {T=} opt_obj Object.
* @protected
@@ -313,7 +313,7 @@ ol.renderer.Layer.prototype.manageTilePyramid = function(
tileResolution = tileGrid.getResolution(z);
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
if (preload || z == currentZ) {
if (currentZ - z <= preload) {
tile = tileSource.getTile(z, x, y, tileGrid, projection);
if (tile.getState() == ol.TileState.IDLE) {
wantedTiles[tile.tileCoord.toString()] = true;