private void button1_Click(object sender, EventArgs e)
{
RectangleF rectf = gen.GeoEnvelope2Viewport(new Envelope(-180, -90, 180, 90));
RectangleF fullRect = new RectangleF(-20037510f, -19993420, 40075020f, 39986840f);
TileSystemHelper h = new TileSystemHelper(rectf, new Size(256, 256), 20);
int totalWidth = 0, totalHeight = 0;
TileDef[] tiles = h.ComputeTiles(2, new RectangleF(-20037510f, -19993420, 40075020f, 39986840f), out totalWidth, out totalHeight);;
foreach (TileDef tile in tiles)
{
Size size = new Size(256, 256);
Image img = new Bitmap(size.Width, size.Height);
RectangleF rect = gen.GetMapImage(tile.Rect, size, ref img);
img.Save("d:\\temp\\" + tile.Quadkey + ".png", ImageFormat.Png);
}
}
private void GetMapImageInternal(string fname, double x,
double y,
double width,
double height,
int targetWidth,
int targetHeight,
string[] invisibleLayerIds,
out RectangleF retRectangleF, out Image retImage, out string retFilename)
{
try
{
/*
* 转换投影坐标的最小值为-Max
*/
y = -(y + height);
if (string.IsNullOrEmpty(fname))
{
fname = System.IO.Path.Combine(_outputdir, Guid.NewGuid().ToString() + _outputImageExtname);
}
RectangleF vf = new RectangleF((float)x, (float)y, (float)width, (float)height);
Size size = new Size(targetWidth, targetHeight);
retImage = new Bitmap(size.Width, size.Height);
List <ILayerDrawable> disLayers = TrySetInvisableOfLayers(invisibleLayerIds);
try
{
retRectangleF = _gen.GetMapImage(vf, size, ref retImage);
float y1 = -retRectangleF.Y;
float y2 = -(retRectangleF.Y + retRectangleF.Height);
retRectangleF = new RectangleF((float)retRectangleF.X, Math.Min(y1, y2), retRectangleF.Width, retRectangleF.Height);
retFilename = fname;
}
finally
{
TryResetVisible(disLayers);
}
}
catch (Exception ex)
{
retRectangleF = RectangleF.Empty;
retImage = null;
retFilename = null;
Log.WriterException(ex);
}
}