void IMapControl.ShowTileGridLines(object go, DrawTile tilePoint)
{
#if DEBUG_TILE_COORDS
Graphics g = (Graphics)go;
// show tile grid lines
g.DrawRectangle(EmptyTileBorders, (int)fCore.TileRect.X, (int)fCore.TileRect.Y,
(int)fCore.TileRect.Width, (int)fCore.TileRect.Height);
g.DrawString(
(tilePoint.PosXY == fCore.CenterTileXYLocation ? "CENTER: " : "TILE: ") + tilePoint,
MissingDataFont, Brushes.DimGray,
new RectangleF(fCore.TileRect.X, fCore.TileRect.Y, fCore.TileRect.Width, fCore.TileRect.Height),
CenterFormat);
#endif
}
public DrawTile GetDrawTile(Tile t)
{
DrawTile dt = null;
if (t != null)
{
TilesUpdateLock.AcquireReaderLock(-1);
try
{
DicDrawTile.TryGetValue(t, out dt);
}
finally
{
TilesUpdateLock.ReleaseReaderLock();
}
}
return(dt);
}
/// <summary>
/// 绘制单块瓦片
/// </summary>
/// <param name="rt"></param>
/// <param name="g"></param>
private void DrawMapTile(DrawTile rt, Graphics g, Point offset)
{
if (rt != null)
{
//var p = rt.DrawPosition.GetOffSet(0 - map.TilesArea.LeftTop.X, 0 - map.TilesArea.LeftTop.Y).ToPoint();
var p = rt.DrawPosition.ToPoint();//绘图位置
if (!offset.IsEmpty)
{
p.Offset(offset);
}
if (rt.Tile != null && !rt.Tile.IsEmpty)
{
rt.Tile.DrawTime = DateTime.Now;
//rt.Tile.DrawCount++;
if (rt.Tile.TileImg != null)
{
g.DrawImage(rt.Tile.TileImg, p);
}
else
{
//没图片
using (var f = new Font("宋体", 11))
{
p.X += 5;
p.Y += 5;
g.DrawString(rt.Tile.ToString(), f, new SolidBrush(GridLineColor), p);
//if (rt.Tile.IsLoading)
//{
// p.Offset(0, 30);
// g.DrawString("Loading...", f, new SolidBrush(GridLineColor), p);
//}
//else if (!string.IsNullOrWhiteSpace(rt.Tile.ErrorMsg))
//{
// p.Offset(0, 30);
// g.DrawString(rt.Tile.ErrorMsg, f, new SolidBrush(Color.FromArgb(0x88, 0xff, 0, 0)), p);
//}
}
}
}
}
}
public void UpdateDrawTiles()
{
IsTilesUpdating = true;
TilesUpdateLock.AcquireWriterLock(1000);
try
{
if (ScreenArea != null)
{
var width = TilesArea.Width;
var height = TilesArea.Height;
var pointLeftTopPix = TileCenterPix.GetOffSet(-width / 2, -height / 2); //左上角像素坐标
var tileXYLeftTop = MercatorHelper.PixelToTileXY(pointLeftTopPix); //左上角的瓦片索引
var tilePixLeftTop = MercatorHelper.TileXYToPixel(tileXYLeftTop); //左上角瓦片像素坐标
//var tileDrawPositionLeftTop = new PointInt((int)(tilePixLeftTop.X - pointLeftTopPix.X + 0.5), (int)(tilePixLeftTop.Y - pointLeftTopPix.Y + 0.5));//屏幕坐标系下左上角瓦片的屏幕坐标
var tileDrawPositionLeftTop = TilesArea.LeftTop.GetOffSet((int)(tilePixLeftTop.X - pointLeftTopPix.X), (int)(tilePixLeftTop.Y - pointLeftTopPix.Y));
var tileXYCenter = MercatorHelper.PixelToTileXY(TileCenterPix);//中心瓦片索引
//var tilePixCenter = MercatorHelper.TileXYToPixel(tileXYCenter);//中心瓦片左上角所在像素坐标
var xCount = (int)Math.Ceiling((double)width / TileSize.Width) + 1; //X方向的瓦片数量
var yCount = (int)Math.Ceiling((double)height / TileSize.Height) + 1; //Y方向的瓦片数量
RectTilesBitmap = new RectInt(tileDrawPositionLeftTop, xCount * TileSize.Width, yCount * TileSize.Height);
tileDrawPositionLeftTop = new PointInt(0, 0);
GridInfo = new DrawGrid
{
GridSize = TileSize,
LeftTop = RectTilesBitmap.LeftTop,
RightBottom = RectTilesBitmap.RightBottom,
XCount = xCount,
YCount = yCount,
};
//计算要显示的绘图瓦片
if (DicDrawTile == null)
{
DicDrawTile = new Dictionary <Tile, DrawTile>();
}
DicDrawTile.Clear();
var minTileIndex = MapHelper.GetTileMatrixMinXY(Zoom);
var maxTileIndex = MapHelper.GetTileMatrixMaxXY(Zoom);
List <Tile> lstWantToLoad = new List <Tile>();
List <DrawTile> lstDrawTile = new List <DrawTile>();
//DateTime rt = DateTime.Now;
for (int x = 0; x < xCount; x++)
{
for (int y = 0; y < yCount; y++)
{
var drawPostiton = tileDrawPositionLeftTop.GetOffSet(x * TileSize.Width, y * TileSize.Height);
//Tile t = new Tile(tileXYLeftTop.X + x, tileXYLeftTop.Y + y, Zoom);
Tile t = TileManager.Singleton.GetTile(Zoom, new PointInt64(tileXYLeftTop.X + x, tileXYLeftTop.Y + y));
if (t == null)
{
t = new Tile(tileXYLeftTop.X + x, tileXYLeftTop.Y + y, Zoom);
}
if (t.TileIndex.X >= minTileIndex.Width && t.TileIndex.Y >= minTileIndex.Height &&
t.TileIndex.X <= maxTileIndex.Width && t.TileIndex.Y <= maxTileIndex.Height) //范围判断
{
var rt = new DrawTile()
{
DrawPosition = drawPostiton,
Tile = t
};
lstDrawTile.Add(rt);
////if (RotationAngle == 0 || MapHelper.CheckTileCrossRect(new RectInt(dt.DrawPosition.GetOffSet(TilesArea.LeftTop.X, TilesArea.LeftTop.Y), TileSize.Width, TileSize.Height), ScreenArea, RotationAngle))
//{
// //DicDrawTile.Add(t, rt);
// lstDrawTile.Add(rt);
// //if (t.TileImg == null)
// //{
// // lstWantToLoad.Add(t);
// //}
//}
}
}
}
lstDrawTile = lstDrawTile.OrderBy(d => Math.Abs(d.Tile.TileIndex.X - tileXYCenter.X) + Math.Abs(d.Tile.TileIndex.Y - tileXYCenter.Y)).ToList();
foreach (var item in lstDrawTile)
{
if (item.Tile.State == TileState.New)
{
TileManager.Singleton.AddTile(item.Tile);
}
if (item.Tile.TileImg == null)
{
lstWantToLoad.Add(item.Tile);
}
item.Tile.ReadTime = DateTime.Now;
DicDrawTile.Add(item.Tile, item);
}
lstWantToLoad.ForEach(a => { TileManager.Singleton.LoadTile(a); });
//_lastTilesRect = tilesRect;
//TileDrawOffset = new PointInt(0,0);
if (TilesUpdateComplete != null)
{
TilesUpdateComplete(DicDrawTile);
}
}
}
finally
{
IsTilesUpdating = false;
TilesUpdateLock.ReleaseWriterLock();
}
}
