public IList <TileInfo> GetTilesInView(Extent extent, int level)
{
IList <TileInfo> infos = new List <TileInfo>();
TileRange range = _axis.WorldToTile(extent, level, this);
infos.Clear();
for (int x = range.FirstCol; x < range.LastCol; x++)
{
for (int y = range.FirstRow; y < range.LastRow; y++)
{
var info = new TileInfo();
info.Extent = _axis.TileToWorld(new TileRange(x, y), level, this);
info.Index = new TileIndex(x, y, level);
if (WithinSchemaExtent(Extent, info.Extent))
{
infos.Add(info);
}
}
}
return(infos);
}