/**
* @inheritDoc
*/
public override TileRange GetTileCoordChildTileRange(int[] tileCoord, TileRange opt_tileRange = null, double[] opt_extent = null)
{
if (tileCoord[0] < this.MaxZoom)
{
var doubleX = 2 * tileCoord[1];
var doubleY = 2 * tileCoord[2];
return(TileRange.CreateOrUpdate(
doubleX, doubleX + 1,
doubleY, doubleY + 1,
opt_tileRange));
}
else
{
return(null);
}
}
/**
* @inheritDoc
*/
public override bool ForEachTileCoordParentTileRange(int[] tileCoord, Func <int, TileRange, bool> callback, TileRange opt_tileRange = null, double[] opt_extent = null)
{
var tileRange = TileRange.CreateOrUpdate(
0, tileCoord[1], 0, tileCoord[2], opt_tileRange);
int z;
for (z = tileCoord[0] - 1; z >= this.MinZoom; --z)
{
tileRange.MinX = tileRange.MaxX >>= 1;
tileRange.MinY = tileRange.MaxY >>= 1;
if (callback(z, tileRange))
{
return(true);
}
}
return(false);
}