private void myLineSymbolStyleComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
switch (myLineSymbolStyleComboBox.SelectedIndex)
{
case 0: lineSymbolStyle = SimpleLineSymbolStyle.Solid; break;
case 1: lineSymbolStyle = SimpleLineSymbolStyle.Dash; break;
case 2: lineSymbolStyle = SimpleLineSymbolStyle.Dot; break;
case 3: lineSymbolStyle = SimpleLineSymbolStyle.DashDot; break;
case 4: lineSymbolStyle = SimpleLineSymbolStyle.DashDotDot; break;
default: lineSymbolStyle = SimpleLineSymbolStyle.Null; break;
}
}
private void LineSymbolForm_Load(object sender, EventArgs e)
{
for (int i = 1; i <= 5; i++)
{
myLineSymbolStyleComboBox.Items.Add(i.ToString());
}
this.myLineSymbolStyleComboBox.DrawMode = DrawMode.OwnerDrawFixed;
this.myLineSymbolStyleComboBox.DrawItem += delegate(object cmb, DrawItemEventArgs args)
{
args.DrawBackground(); System.Drawing.Drawing2D.DashStyle ds;
switch (args.Index)
{
case 0: ds = System.Drawing.Drawing2D.DashStyle.Solid; break;
case 1: ds = System.Drawing.Drawing2D.DashStyle.Dash; break;
case 2: ds = System.Drawing.Drawing2D.DashStyle.Dot; break;
case 3: ds = System.Drawing.Drawing2D.DashStyle.DashDot; break;
case 4: ds = System.Drawing.Drawing2D.DashStyle.DashDotDot; break;
default: ds = System.Drawing.Drawing2D.DashStyle.Custom; break;
}
Rectangle r = args.Bounds; float ly = r.Bottom - r.Height / 2;
using (Pen p = new Pen(Color.FromArgb(0, 0, 255), 2))
{
p.DashStyle = ds; args.Graphics.DrawLine(p, r.Left, ly, r.Right, ly);
}
};
// 颜色
resultColor = this.myLineSymbolColorBox.BackColor;
// 宽度
symbolSize = 3;
// 样式
lineSymbolStyle = SimpleLineSymbolStyle.Null;
}
/// <summary>
/// 添加导航路线并返回路线长度
/// </summary>
/// <param name="overlay">图层实例</param>
/// <param name="stops">站点</param>
/// <param name="lineStyle">线的呈现样式</param>
/// <param name="lineColor">颜色</param>
/// <param name="lineWidth">线宽</param>
/// <returns>路径长度，站点数小于2时返回-1</returns>
public double AddNavigateRouteToGraphicsOverlay(GraphicsOverlay overlay, List <MapPoint> stops, SimpleLineSymbolStyle lineStyle, Color lineColor, double lineWidth)
{
if (stops.Count <= 1)
{
return(-1);
}
AddRouteToGraphicsOverlay(overlay, stops, lineStyle, lineColor, lineWidth);
AddIconToGraphicsOverlay(overlay, stops[0], IconDictionaryHelper.IconDictionary[IconDictionaryHelper.Icons.start], 22, 33, 0.0, 13);
AddIconToGraphicsOverlay(overlay, stops[stops.Count - 1], IconDictionaryHelper.IconDictionary[IconDictionaryHelper.Icons.end], 22, 33, 0.0, 13);
double distance = 0;
for (int i = 1; i < stops.Count - 1; i++)
{
distance += GetDistance(stops[i - 1].Y, stops[i - 1].X, stops[i].Y, stops[i].X);
}
return(distance);
}
/// <summary>
/// 在指定图层上添加线要素
/// </summary>
/// <param name="overlay">图层实例</param>
/// <param name="stops">站点</param>
/// <param name="lineStyle">线的呈现样式</param>
/// <param name="lineColor">颜色</param>
/// <param name="lineWidth">线宽</param>
private void AddRouteToGraphicsOverlay(GraphicsOverlay overlay, List <MapPoint> stops, SimpleLineSymbolStyle lineStyle, Color lineColor, double lineWidth)
{
Polyline routePolyline = new Polyline(stops);
SimpleLineSymbol routeSymbol = new SimpleLineSymbol(lineStyle, lineColor, lineWidth);
Graphic routeGraphic = new Graphic(routePolyline, routeSymbol);
overlay.Graphics.Add(routeGraphic);
}
