internal override void Draw(Graphics g, Datarow row)
{
PointF p1 = MapDrawHelper.ToScreenPoint(row.Extent.LeftTop, extent, width, height);
PointF p2 = MapDrawHelper.ToScreenPoint(row.Extent.RightBottom, extent, width, height);
Image image = null;
switch (this.layer.Datatable.TableType)
{
case DatatableType.Raster:
if (row.Data is string)
{
image = Image.FromFile((string)row.Data);
}
break;
default:
break;
}
if (image == null)
{
return;
}
g.DrawImage(image, p1.X, p1.Y, p2.X - p1.X, p2.Y - p1.Y);
image.Dispose();
}
internal override void Draw(Graphics g, Datarow row)
{
if (row.Data == null)
{
return;
}
MapLine mapLine = (MapLine)row.Data;
List <PointF> screenpoints = new List <PointF>();
foreach (MapPoint p in mapLine.Points)
{
screenpoints.Add(MapDrawHelper.ToScreenPoint(p, extent, width, height));
}
g.DrawLines(new Pen(Color.Orange, 2), screenpoints.ToArray());
}
internal override void Draw(Graphics g, Datarow row)
{
if (row.Data == null)
{
return;
}
MapPolygon mapPolygon = (MapPolygon)row.Data;
List <PointF> screenpoints = new List <PointF>();
foreach (MapPoint p in mapPolygon.Points)
{
screenpoints.Add(MapDrawHelper.ToScreenPoint(p, extent, width, height));
}
g.FillPolygon(new SolidBrush(Color.FromArgb(100, Color.Blue)), screenpoints.ToArray());
}
internal override void Draw(Graphics g, Datarow row)
{
PointF point = MapDrawHelper.ToScreenPoint((MapPoint)row.Data, extent, width, height);
g.DrawImage(Properties.Resources.qiuji_online, point.X, point.Y, 12, 14);
}