public BitmapCacheItem this[Fragment f]
{
get {
if (IsCached(f)) {
return fragmentsWithCache[f];
} else {
return null;
}
}
}
public void ExtendRoot()
{
Fragment newRoot = new Fragment(root.Depth - 1);
newRoot.MakeChilds();
newRoot.ChildLT.ChildRB = Root.ChildLT;
newRoot.ChildRT.ChildLB = Root.ChildRT;
newRoot.ChildLB.ChildRT = Root.ChildLB;
newRoot.ChildRB.ChildLT = Root.ChildRB;
root = newRoot;
size *= 2;
}
public BitmapCacheItem AllocateCache(Fragment f)
{
if (IsCached(f)) {
return fragmentsWithCache[f];
} else {
// Take item from head and put it at tail
BitmapCacheItem item = caches.First.Value;
caches.RemoveFirst();
caches.AddLast(item);
// Allocate the item to freagment
if (item.Owner != null) {
ReleaseCache(item.Owner);
}
item.Owner = f;
fragmentsWithCache[f] = item;
return item;
}
}
BitmapCacheItem UpdateBitmap(Fragment f)
{
if (bitmapCache.IsCached(f)) {
return bitmapCache[f];
} else {
BitmapCacheItem c = bitmapCache.AllocateCache(f);
UpdateTexture(c.Texture, c.X, c.Y, f.MakeImage(fractal.ColorMap));
return c;
}
}
public void MakeChilds()
{
if (!HasAllChilds) {
childLT = new Fragment(depth + 1);
childRT = new Fragment(depth + 1);
childLB = new Fragment(depth + 1);
childRB = new Fragment(depth + 1);
}
}
public void ReleaseCache(Fragment f)
{
if (IsCached(f)) {
fragmentsWithCache[f].Owner = null;
fragmentsWithCache.Remove(f);
}
}
public bool IsCached(Fragment f)
{
return fragmentsWithCache.ContainsKey(f);
}
