////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Returns the point at the center of the rectangle.
* @return the point at the center of the rectangle.
*/
public GeoLatLng GetCenter()
{
GeoPoint pt1 = MapLayer.FromLatLngToPixel(GetSouthWest(), 15);
GeoPoint pt2 = MapLayer.FromLatLngToPixel(GetNorthEast(), 15);
GeoPoint pt = new GeoPoint();
pt.X = pt1.X + (pt2.X - pt1.X) / 2;
pt.Y = pt1.Y + (pt2.Y - pt1.Y) / 2;
return(MapLayer.FromPixelToLatLng(pt, 15));
}
private void ProcessTileIndex()
{
while (!stopThread)
{
int newX = 0;
int newY = 0;
int newZ = 0;
lock (_tileIndexList)
{
if (_tileIndexList.Count > 0)
{
MapTileIndex mapTileIndex = _tileIndexList[_tileIndexList.Count - 1];
newX = mapTileIndex.XIndex;
newY = mapTileIndex.YIndex;
newZ = mapTileIndex.ZoomLevel;
_tileIndexList.Clear();
}
else
{
Thread.Sleep(5000);
}
}
if (newZ != 0)
{
int oldZoom = _rasterMap.GetZoom();
GeoLatLng latLng = MapLayer.FromPixelToLatLng(new GeoPoint(newX * 256 + 128, newY * 256 + 128), newZ);
if (newZ != oldZoom)
{
_rasterMap.SetCenter(latLng, newZ);
}
else
{
GeoLatLng center = _rasterMap.GetCenter();
GeoPoint pt1 = _rasterMap.FromLatLngToScreenPixel(center);
GeoPoint pt2 = _rasterMap.FromLatLngToScreenPixel(latLng);
_rasterMap.PanDirection((int)(pt1.X - pt2.X), (int)(pt1.Y - pt2.Y));
}
}
}
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Get the image at given X,Y zoom level.
* @param X X index of the map tile
* @param Y Y index of the map tile.
* @param zoomLevel zoom level of the map tile
* @return the given image.
*/
public IImage GetImage(int x, int y, int zoomLevel)
{
MapDirection mapDirection = GetMapDirection();
if (mapDirection != null)
{
try
{
const int shiftWidth = 4;
GeoPoint pt1 = new GeoPoint(x * MapLayer.MAP_TILE_WIDTH - shiftWidth,
y * MapLayer.MAP_TILE_WIDTH - shiftWidth);
GeoPoint pt2 = new GeoPoint((x + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth,
(y + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth);
GeoLatLng latLng1 = MapLayer.FromPixelToLatLng(pt1, zoomLevel);
GeoLatLng latLng2 = MapLayer.FromPixelToLatLng(pt2, zoomLevel);
double minY = Math.Min(latLng1.Lat(), latLng2.Lat());
double maxY = Math.Max(latLng1.Lat(), latLng2.Lat());
double minX = Math.Min(latLng1.Lng(), latLng2.Lng());
double maxX = Math.Max(latLng1.Lng(), latLng2.Lng());
GeoLatLngBounds geoBounds = new GeoLatLngBounds(minX, minY,
maxX - minX, maxY - minY);
GeoLatLng centerPt = geoBounds.GetCenter();
_mapDirectionLayer.SetCenter(centerPt, zoomLevel);
_mapDirectionLayer._screenBounds = geoBounds;
_mapTileGraphics.SetColor(TRANSPARENCY);
_mapTileGraphics.FillRect(0, 0, MapLayer.MAP_TILE_WIDTH,
MapLayer.MAP_TILE_WIDTH);
_mapDirectionLayer.Paint(_mapTileGraphics);
IsImagevalid = true;
if (_readListener != null)
{
_readListener.readProgress(16, 16);
}
return(_mapTileImage.ModifyAlpha(160,
TRANSPARENCY));
}
catch (Exception)
{
}
}
return(null);
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 21JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* @inheritDoc
*/
public override void GetImage(int mtype, int x, int y, int zoomLevel)
{
lock (VectorMapAbstractCanvas.GRAPHICS_MUTEX)
{
int shiftWidth = 32;
GeoPoint pt1 = new GeoPoint(x * MapLayer.MAP_TILE_WIDTH - shiftWidth,
y * MapLayer.MAP_TILE_WIDTH - shiftWidth);
GeoPoint pt2 = new GeoPoint((x + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth,
(y + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth);
GeoLatLng latLng1 = MapLayer.FromPixelToLatLng(pt1, zoomLevel);
GeoLatLng latLng2 = MapLayer.FromPixelToLatLng(pt2, zoomLevel);
double minY = Math.Min(latLng1.Lat(), latLng2.Lat());
double maxY = Math.Max(latLng1.Lat(), latLng2.Lat());
double minX = Math.Min(latLng1.Lng(), latLng2.Lng());
double maxX = Math.Max(latLng1.Lng(), latLng2.Lng());
double width = 0.00;
double height = 0.00;
//width = width < 0.06 ? 0.06 : width;
//height = height < 0.06 ? 0.06 : height;
GeoLatLngBounds geoBounds = new GeoLatLngBounds(minX - width / 2.0, minY - height / 2.0,
maxX - minX + width, maxY - minY + height);
try
{
Hashtable[] mapFeatures = _geoSet.Search(geoBounds);
int totalSize = 0;
for (int i = 0; i < mapFeatures.Length; i++)
{
Hashtable mapFeaturesInLayer = mapFeatures[i];
totalSize += mapFeaturesInLayer.Count;
}
totalSize += 1;
int mapObjectIndex = 0;
_vectorMapCanvas.ClearCanvas(0xffffff);
for (int i = 0; i < mapFeatures.Length; i++)
{
int zOrder = mapFeatures.Length - 1 - i;
Hashtable mapFeaturesInLayer = mapFeatures[zOrder];
ICollection enuKeys = mapFeaturesInLayer.Keys;
MapFeatureLayer mapLayer = _geoSet.GetMapFeatureLayer(zOrder);
foreach (var o in enuKeys)
{
int mapInfoID = (int)o;
MapFeature mapFeature = mapLayer
.GetMapFeatureByID(mapInfoID);
mapObjectIndex++;
_vectorMapCanvas.SetFont(GetFont(mapLayer.FontName));
_vectorMapCanvas.SetFontColor(mapLayer.FontColor);
_vectorMapCanvas.DrawMapObject(mapFeature.MapObject,
geoBounds, zoomLevel);
if (_readListener != null)
{
_readListener.readProgress(mapObjectIndex,
totalSize);
}
}
}
_vectorMapCanvas.DrawMapText();
ImageArray = PNGEncoder.GetPngrgb(MapLayer.MAP_TILE_WIDTH,
MapLayer.MAP_TILE_WIDTH,
_vectorMapCanvas.GetRGB());
ImageArraySize = ImageArray.Length;
IsImagevalid = true;
if (ImageArraySize == 1933)
{
ImageArray = null;
IsImagevalid = false;
ImageArraySize = 0;
}
if (_readListener != null)
{
_readListener.readProgress(totalSize, totalSize);
}
}
catch (Exception e)
{
}
}
}