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Use snapCenterToPixel in DOM renderer

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This commit is contained in:
Tom Payne
2013-03-10 16:03:01 +01:00
parent bceb27f4bb
commit 505c607ccb
1 changed files with 15 additions and 6 deletions
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src/ol/renderer/dom/domtilelayerrenderer.js
+15 -6
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@@ -90,8 +90,17 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
} }
var z = tileGrid.getZForResolution(view2DState.resolution); var z = tileGrid.getZForResolution(view2DState.resolution);
var tileResolution = tileGrid.getResolution(z); var tileResolution = tileGrid.getResolution(z);
var center = view2DState.center;
var extent;
if (tileResolution == view2DState.resolution) {
center = this.snapCenterToPixel(center, tileResolution, frameState.size);
extent = ol.Extent.getForView2DAndSize(
center, tileResolution, view2DState.rotation, frameState.size);
} else {
extent = frameState.extent;
}
var tileRange = tileGrid.getTileRangeForExtentAndResolution( var tileRange = tileGrid.getTileRangeForExtentAndResolution(
frameState.extent, tileResolution); extent, tileResolution);
/** @type {Object.<number, Object.<string, ol.Tile>>} */ /** @type {Object.<number, Object.<string, ol.Tile>>} */
var tilesToDrawByZ = {}; var tilesToDrawByZ = {};
@@ -149,7 +158,7 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
tileLayerZ = this.tileLayerZs_[tileLayerZKey]; tileLayerZ = this.tileLayerZs_[tileLayerZKey];
} else { } else {
tileCoordOrigin = tileCoordOrigin =
tileGrid.getTileCoordForCoordAndZ(view2DState.center, tileLayerZKey); tileGrid.getTileCoordForCoordAndZ(center, tileLayerZKey);
tileLayerZ = new ol.renderer.dom.TileLayerZ_(tileGrid, tileCoordOrigin); tileLayerZ = new ol.renderer.dom.TileLayerZ_(tileGrid, tileCoordOrigin);
newTileLayerZKeys[tileLayerZKey] = true; newTileLayerZKeys[tileLayerZKey] = true;
this.tileLayerZs_[tileLayerZKey] = tileLayerZ; this.tileLayerZs_[tileLayerZKey] = tileLayerZ;
@@ -186,8 +195,8 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
resolution / view2DState.resolution, 1); resolution / view2DState.resolution, 1);
goog.vec.Mat4.translate( goog.vec.Mat4.translate(
transform, transform,
(origin.x - view2DState.center.x) / resolution, (origin.x - center.x) / resolution,
(view2DState.center.y - origin.y) / resolution, (center.y - origin.y) / resolution,
0); 0);
tileLayerZ.setTransform(transform); tileLayerZ.setTransform(transform);
if (tileLayerZKey in newTileLayerZKeys) { if (tileLayerZKey in newTileLayerZKeys) {
@@ -204,7 +213,7 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
} else { } else {
if (!frameState.viewHints[ol.ViewHint.ANIMATING] && if (!frameState.viewHints[ol.ViewHint.ANIMATING] &&
!frameState.viewHints[ol.ViewHint.INTERACTING]) { !frameState.viewHints[ol.ViewHint.INTERACTING]) {
tileLayerZ.removeTilesOutsideExtent(frameState.extent); tileLayerZ.removeTilesOutsideExtent(extent);
} }
} }
} }
@@ -220,7 +229,7 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
} }
this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange); this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
tileSource.useLowResolutionTiles(z, frameState.extent, tileGrid); tileSource.useLowResolutionTiles(z, extent, tileGrid);
this.scheduleExpireCache(frameState, tileSource); this.scheduleExpireCache(frameState, tileSource);
}; };