public void drawLegend(Graphics g)
{
// top left corner
var tl = Overlay.Control.FromLocalToLatLng(0, 0);
// top right corner
var tr = Overlay.Control.FromLocalToLatLng(Overlay.Control.Width, 0);
// width in m
double width = Overlay.Control.MapProvider.Projection.GetDistance(tl, tr)*1000.0;
// meters per pixel
double m2pixelwidth = Overlay.Control.Width/width;
var widthc = 20;
var halfwidthc = widthc/2.0f;
var pos = Overlay.Control.FromLatLngToLocal(Position);
pos.Offset(-LocalPosition.X, -LocalPosition.Y);
using (StringFormat stringFormat = new StringFormat())
{
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Center;
int a = 0;
foreach (var brush in colorbrushs)
{
GPoint p = new GPoint(20, (long) (100 + a*(widthc + 5)));
p.Offset(-pos.X, -pos.Y);
g.FillPie(brush, (float) (p.X - halfwidthc), (float) (p.Y - halfwidthc), (float) (widthc),
(float) (widthc), 0, 360);
g.DrawString((a + 1).ToString(), SystemFonts.DefaultFont, Brushes.White,
new RectangleF((float) (p.X - halfwidthc), (float) (p.Y - halfwidthc), (float) widthc,
(float) widthc), stringFormat);
a++;
}
}
}
