/// <summary>
/// 画注记
/// </summary>
/// <param name="g"></param>
/// <param name="bounds"></param>
/// <param name="centerPos"></param>
/// <param name="scale"></param>
/// <param name="fid2Text"></param>
internal override void DrawLabel(Graphics g, Rectangle bounds, PointF centerPos, double scale, Dictionary <int, string> fid2Text, TextSymbol textSymbol)
{
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < polygons.Count; i++)
{
List <PointF> pointfs = new List <PointF>();
for (int j = 0; j < polygons[i].PointCount; j++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(polygons[i].Points[j]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
PointF p = new PointF((float)xScreen, bounds.Height - (float)yScreen);
pointfs.Add(p);
}
RectangleF mbr = GeometryTools.GetMBR(pointfs.ToArray());
string text = fid2Text[polygons[i].FID];
if (Math.Max(mbr.Width, mbr.Height) > textSymbol.TextStyle.TextSize * text.Length)
{
TextSymbol.PolygonLabel(pointfs.ToArray(), g, textSymbol, text);
}
}
}
