features = new HashMap<String, Feature>();
evictedTiles = new ArrayList<VectorTile>();
if (null != layer.getMapModel().getMapInfo()) {
setPreferredPixelsPerTile(layer.getMapModel().getMapInfo().getPreferredPixelsPerTile());
} else {
setPreferredPixelsPerTile(new ClientPreferredPixelsPerTile());
}
currentMinX = 0;
currentMinY = 0;
currentMaxX = 0;
currentMaxY = 0;