private void cleanGrid() {
WVirtualImage.Rect cleanNb =
this.neighbourhood(
this.currentX_, this.currentY_, this.viewPortWidth_ * 3, this.viewPortHeight_ * 3);
long i1 = cleanNb.x1 / this.gridImageSize_;
long j1 = cleanNb.y1 / this.gridImageSize_;
long i2 = cleanNb.x2 / this.gridImageSize_ + 1;
long j2 = cleanNb.y2 / this.gridImageSize_ + 1;
for (Iterator<Map.Entry<Long, WImage>> it_it = this.grid_.entrySet().iterator();
it_it.hasNext(); ) {
Map.Entry<Long, WImage> it = it_it.next();
WVirtualImage.Coordinate coordinate = new WVirtualImage.Coordinate();
this.decodeKey(it.getKey(), coordinate);
if (coordinate.i < i1 || coordinate.i > i2 || coordinate.j < j1 || coordinate.j > j2) {;
if (it.getValue() != null) it.getValue().remove();
it_it.remove();
} else {
}
}
}
