public void And_CombineSingleBlockBitmaps()
{
var bitmap = new Bitmap(50);
var other = new Bitmap(50);
bitmap.Set(0);
bitmap.Set(10);
bitmap.Set(14);
bitmap.Set(22);
bitmap.Set(20);
bitmap.Set(42);
bitmap.Set(41);
bitmap.Set(43);
other.Set(42);
other.Set(21);
bitmap.And(other);
Assert.AreEqual(50, bitmap.Count);
var bits = new bool[bitmap.Count];
bits[42] = true;
CollectionAssert.AreEqual(bits, bitmap.ToArray());
}
public void And_CombineEmptyBitmaps()
{
var bitmap = new Bitmap(0);
var other = new Bitmap(0);
Assert.AreEqual(0, bitmap.Count);
Assert.AreEqual(0, other.Count);
bitmap.And(other);
Assert.AreEqual(0, bitmap.Count);
}
public void And()
{
using (Bitmap TestObject = new Bitmap(@"..\..\Data\Image\Lenna.jpg"))
{
using (Bitmap TestObject2 = new Bitmap(@"..\..\Data\Image\Image2.jpg"))
{
using (Bitmap Image = Assert.Do <Bitmap>(() => TestObject.And(TestObject2, @".\Testing\LennaAnd.jpg")))
{
Assert.NotNull(Image);
}
}
}
}
static public void Main(string[] args)
{
Storage db = StorageFactory.Instance.CreateStorage();
db.Open("testbitmap.dbs", pagePoolSize);
City city = (City)db.Root;
if (city == null)
{
city = new City();
#if USE_GENERICS
city.byLocation = db.CreateSpatialIndexR2 <Restaurant>();
city.byKitchen = db.CreateFieldIndex <string, Restaurant>("kitchen", false, true, true);
city.byAvgPrice = db.CreateFieldIndex <int, Restaurant>("avgPrice", false, true, true);
city.byRating = db.CreateFieldIndex <int, Restaurant>("rating", false, true, true);
#else
city.byLocation = db.CreateSpatialIndexR2();
city.byKitchen = db.CreateFieldIndex(typeof(Restaurant), "kitchen", false, true, true);
city.byAvgPrice = db.CreateFieldIndex(typeof(Restaurant), "avgPrice", false, true, true);
city.byRating = db.CreateFieldIndex(typeof(Restaurant), "rating", false, true, true);
#endif
db.Root = city;
}
DateTime start = DateTime.Now;
Random rnd = new Random(2013);
for (int i = 0; i < nRecords; i++)
{
Restaurant rest = new Restaurant();
rest.lat = 55 + (float)rnd.NextDouble();
rest.lng = 37 + (float)rnd.NextDouble();
rest.kitchen = kitchens[rnd.Next(kitchens.Length)];
rest.avgPrice = rnd.Next(1000);
rest.rating = rnd.Next(10);
city.byLocation.Put(new RectangleR2(rest.lat, rest.lng, rest.lat, rest.lng), rest);
city.byKitchen.Put(rest);
city.byAvgPrice.Put(rest);
city.byRating.Put(rest);
}
db.Commit();
Console.WriteLine("Elapsed time for inserting " + nRecords + " records: " + (DateTime.Now - start));
start = DateTime.Now;
long total = 0;
for (int i = 0; i < nSearches; i++)
{
double lat = 55 + rnd.NextDouble();
double lng = 37 + rnd.NextDouble();
String kitchen = kitchens[rnd.Next(kitchens.Length)];
int minPrice = rnd.Next(1000);
int maxPrice = minPrice + rnd.Next(1000);
int minRating = rnd.Next(10);
Bitmap bitmap = db.CreateBitmap(city.byKitchen.GetEnumerator(kitchen, kitchen));
bitmap.And(db.CreateBitmap(city.byAvgPrice.GetEnumerator(minPrice, maxPrice)));
bitmap.And(db.CreateBitmap(city.byRating.GetEnumerator(new Key(minRating), null)));
PersistentEnumerator enumerator = (PersistentEnumerator)city.byLocation.Neighbors(lat, lng).GetEnumerator();
int nAlternatives = 0;
while (enumerator.MoveNext())
{
int oid = enumerator.CurrentOid;
if (bitmap.Contains(oid))
{
Restaurant rest = (Restaurant)db.GetObjectByOID(oid);
total += 1;
if (++nAlternatives == 10)
{
break;
}
}
}
}
Console.WriteLine("Elapsed time for " + nSearches + " searches of " + total + " variants among " + nRecords + " records: "
+ (DateTime.Now - start) + " milliseconds");
db.Close();
}
