/// <summary>
///
/// </summary>
/// <param name="tileReplace"></param>
public static void JoinTilesToOneImageAndSave(TileReplace tileReplace, string xyzInPathFormat, string outTileFilePath)
{
switch (tileReplace.NeedTileIndex.Count)
{
case 1: //just copy.
var needTile = tileReplace.NeedTileIndex.First();
TouchFile(outTileFilePath);
File.Copy(string.Format(xyzInPathFormat, needTile.X, needTile.Y, tileReplace.Zoom), outTileFilePath);
break;
case 2:
CreateAndSaveFrom2tiles(tileReplace, xyzInPathFormat, outTileFilePath);
break;
case 4:
CreateAndSaveFrom4tiles(tileReplace, xyzInPathFormat, outTileFilePath);
break;
}
}
/// <summary>
/// top and bottom pics.
/// </summary>
/// <param name="tileReplace"></param>
/// <param name="xyzInPathFormat"></param>
/// <param name="outTileFilePath"></param>
private static void CreateAndSaveFrom2tiles(TileReplace tileReplace, string xyzInPathFormat, string outTileFilePath)
{
var joinTiles = new Bitmap(TileMathBase.TileSize, TileMathBase.TileSize);
var joinTilesGraphics = Graphics.FromImage(joinTiles);
var needTile0 = tileReplace.NeedTileIndex.First();
var image0 = GetImageFrom(string.Format(xyzInPathFormat, needTile0.X, needTile0.Y, tileReplace.Zoom));
var needTile1 = tileReplace.NeedTileIndex.Last();
var image1 = GetImageFrom(string.Format(xyzInPathFormat, needTile1.X, needTile1.Y, tileReplace.Zoom));
if (image0 != null && image1 != null)
{
joinTilesGraphics.DrawImage(image0, 0, 0 - TileMathBase.TileSize + tileReplace.Shift.Y, TileMathBase.TileSize, TileMathBase.TileSize);
joinTilesGraphics.DrawImage(image1, 0, TileMathBase.TileSize - TileMathBase.TileSize + tileReplace.Shift.Y, TileMathBase.TileSize, TileMathBase.TileSize);
TouchFile(outTileFilePath);
joinTiles.Save(outTileFilePath);
}
}
/// <summary>
/// TopLeft-BottomLeft-TopRight-BottomRight.
/// </summary>
/// <param name="tileReplace"></param>
/// <param name="xyzInPathFormat"></param>
/// <param name="outTileFilePath"></param>
private static void CreateAndSaveFrom4tiles(TileReplace tileReplace, string xyzInPathFormat, string outTileFilePath)
{
var joinTiles = new Bitmap(TileMathBase.TileSize, TileMathBase.TileSize);
var joinTilesGraphics = Graphics.FromImage(joinTiles);
var arr = tileReplace.NeedTileIndex.ToArray();
var image00 = GetImageFrom(string.Format(xyzInPathFormat, arr[0].X, arr[0].Y, tileReplace.Zoom));
var image01 = GetImageFrom(string.Format(xyzInPathFormat, arr[1].X, arr[1].Y, tileReplace.Zoom));
var image10 = GetImageFrom(string.Format(xyzInPathFormat, arr[2].X, arr[2].Y, tileReplace.Zoom));
var image11 = GetImageFrom(string.Format(xyzInPathFormat, arr[3].X, arr[3].Y, tileReplace.Zoom));
if (image00 != null && image01 != null && image10 != null && image11 != null)
{
joinTilesGraphics.DrawImage(image00, 0 - tileReplace.Shift.X, 0 - tileReplace.Shift.Y, TileMathBase.TileSize, TileMathBase.TileSize);
joinTilesGraphics.DrawImage(image01, 0 - tileReplace.Shift.X, TileMathBase.TileSize - tileReplace.Shift.Y, TileMathBase.TileSize, TileMathBase.TileSize);
joinTilesGraphics.DrawImage(image10, TileMathBase.TileSize - tileReplace.Shift.X, 0 - tileReplace.Shift.Y, TileMathBase.TileSize, TileMathBase.TileSize);
joinTilesGraphics.DrawImage(image11, TileMathBase.TileSize - tileReplace.Shift.X, TileMathBase.TileSize - tileReplace.Shift.Y, TileMathBase.TileSize, TileMathBase.TileSize);
TouchFile(outTileFilePath);
joinTiles.Save(outTileFilePath);
}
}
private TileReplace FindReplace(int sphericalTileIndexX, int sphericalTileIndexY, int zoom, Point resultXY)
{
var tileXYindex = TileMathBase.PixelXY2TileXY(resultXY.X, resultXY.Y);
var xShift = resultXY.X % TileMathBase.TileSize;
var yShift = resultXY.Y % TileMathBase.TileSize;
if (xShift == 0 && yShift == 0)
{
//just copy.
var result1 = new TileReplace(tileXYindex.X, tileXYindex.Y, zoom);
result1.NeedTileIndex.Add(new Point(sphericalTileIndexX, sphericalTileIndexY));
result1.Shift = new Point(0, 0);
return(result1);
}
else if (xShift == 0 && yShift != 0)
{
//can try to create Y+1 tile.
var result2 = new TileReplace(tileXYindex.X, tileXYindex.Y + 1, zoom);
result2.NeedTileIndex.Add(new Point(sphericalTileIndexX, sphericalTileIndexY));
result2.NeedTileIndex.Add(new Point(sphericalTileIndexX, sphericalTileIndexY + 1));
result2.Shift = new Point(0, yShift);
return(result2);
}
else
{
//need 4 tiles to create a one new.
var result3 = new TileReplace(tileXYindex.X + 1, tileXYindex.Y + 1, zoom);
result3.NeedTileIndex.Add(new Point(sphericalTileIndexX, sphericalTileIndexY));
result3.NeedTileIndex.Add(new Point(sphericalTileIndexX, sphericalTileIndexY + 1));
result3.NeedTileIndex.Add(new Point(sphericalTileIndexX + 1, sphericalTileIndexY));
result3.NeedTileIndex.Add(new Point(sphericalTileIndexX + 1, sphericalTileIndexY + 1));
result3.Shift = new Point(xShift, yShift);
return(result3);
}
}
