private void GenerateTile(double startX, double startY, double initTileGap, int imageSize, int imageBuffer, string savePath, int z, int x, int y, string imageFormat)
{
try
{
// active map variable
map.setSize(imageSize + (imageBuffer * 2), imageSize + (imageBuffer * 2));
// 0/0/0 tile variables
double startPointX = startX;
double startPointY = startY;
double initGap = initTileGap; // inital distance between tiles, for level 0 is max meters - min meters
// meta-buffer to fix labeling as a multiplier
double buffer = 1 + ((double)imageBuffer / (double)imageSize);
// find the spacing between each tile for level
double gap = (initGap / Math.Pow(2, z));
// buffer in meters for each level
double buffermeters = (gap * buffer) - gap;
// set map extents for tile x values
map.extent.minx = (startPointX + (gap * x)) - buffermeters;
map.extent.maxx = (startPointX + (gap * x) + gap) + buffermeters;
// set map extents for tile y values
map.extent.miny = (startPointY + (gap * y)) - buffermeters;
map.extent.maxy = (startPointY + (gap * y) + gap) + buffermeters;
// generate map image
using (imageObj image = map.draw())
{
Image mapImage;
byte[] img = image.getBytes();
using (MemoryStream ms = new MemoryStream(img))
{
mapImage = Image.FromStream(ms);
ms.Flush();
// clip buffer area off generated image
if (!(buffer == 0))
{
Rectangle cropRect = new Rectangle(imageBuffer, imageBuffer, imageSize, imageSize);
Bitmap bmpImage = new Bitmap(mapImage);
Bitmap bmpCrop = bmpImage.Clone(cropRect, bmpImage.PixelFormat);
mapImage = (Image)(bmpCrop);
}
// save image to disk in TMS format location
System.IO.Directory.CreateDirectory(savePath + "\\" + z + "\\" + x);
if (imageFormat == "png")
{
mapImage.Save(savePath + "\\" + z + "\\" + x + "\\" + y + "." + imageFormat, ImageFormat.Png);
}
if (imageFormat == "jpg")
{
mapImage.Save(savePath + "\\" + z + "\\" + x + "\\" + y + "." + imageFormat, ImageFormat.Jpeg);
}
}
}
}
catch (Exception ex)
{
ExceptionDump(ex);
}
}
/// <summary>
/// refresh the map,can reread the origin mapfile
/// </summary>
/// <param name="reload"></param>
public void refreshMap(bool reload)
{
if (_Map == null)
{
if (this.BackgroundImage != null)
this.BackgroundImage = null;
return;
}
if (reload)
{
if (_Map != null)
_Map.Dispose();
try
{
//_TempMapfilePath = CreateTempMapfile(_MapfilePath);
_Map = new mapObj(_TempMapfilePath);
_Map.setSize(m_viewWidth, m_viewHeight);
_Map.extent.minx = m_Curextents.Left;
_Map.extent.maxx = m_Curextents.Right;
_Map.extent.miny = m_Curextents.Bottom;
_Map.extent.maxy = m_Curextents.Top;
drawImg2Mapcontrol();
//fire the mapreplaced event
if (this.OnMapReplaced != null)
OnMapReplaced(null, new EventArgs());
}
catch (Exception ex)
{
if (ErrorOccured != null)
ErrorOccured(null, new MSErrorEventArgs(ex.Message));
closeMapfile();
}
}
else
{
try
{
_Map.setSize(m_viewWidth, m_viewHeight);
drawImg2Mapcontrol();
calculateNewScale();
m_Curextents = new Extent(_Map.extent.minx, _Map.extent.maxx, _Map.extent.miny, _Map.extent.maxy);
{
double geoWidth = Math.Abs(m_Curextents.Right - m_Curextents.Left);
double geoHeight = Math.Abs(m_Curextents.Top - m_Curextents.Bottom);
if (geoWidth == 0)
{
m_pixelPerProjectionX = 0;
m_inversePixelPerProjectionX = 0;
}
else
{
m_pixelPerProjectionX = m_viewWidth / geoWidth;
m_inversePixelPerProjectionX = 1.0 / m_pixelPerProjectionX;
}
if (geoHeight == 0)
{
m_pixelPerProjectionY = 0;
m_inversePixelPerProjectionY = 0;
}
else
{
m_pixelPerProjectionY = m_viewHeight / geoHeight;
m_inversePixelPerProjectionY = 1.0 / m_pixelPerProjectionY;
}
}
ChecktLayerState();
}
catch(Exception ex)
{
MessageBox.Show("Error:" + ex.Message,"��ʾ");
}
}
}