/// <summary>
/// 绘制更新的图元
/// </summary>
/// <param name="listPoint"></param>
private void DrawNewCircle(List <MapLngLat> listPoint)
{
float[] vertex = new float[4];
IntPtr ptrVert = Marshal.AllocHGlobal(sizeof(float) * 4);
vertex[0] = (float)listPoint[0].Lng;
vertex[1] = (float)listPoint[0].Lat;
vertex[2] = (float)listPoint[1].Lng;
vertex[3] = (float)listPoint[1].Lat;
Marshal.Copy(vertex, 0, ptrVert, vertex.Length);
mapControl.MgsDelObject(symbolName);//先删除掉原始线图元
//再添加一个新的线图元
mapControl.MgsDrawLineSymByJBID(symbolName, 16, (ulong)(ptrVert.ToInt64()), 2);
mapControl.MgsUpdateSymColor(symbolName, bOutLineColor.R, bOutLineColor.G, bOutLineColor.B, bOutLineColor.A);
mapControl.MgsUpdateSymFillColor(symbolName, bFillColor.R, bFillColor.G, bFillColor.B, bFillColor.A);
mapControl.MgsUpdateSymLineWidth(symbolName, this.width);
Update();//刷新
Marshal.FreeHGlobal(ptrVert);
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="kml">kml对象</param>
/// <param name="_mapControl">地图控件</param>
public Circle_Mgis(Kml kml, AxHOSOFTMapControl _mapControl)
{
this.mapControl = _mapControl;
KmlCircle kmlCircle = kml.Placemark.Graph as KmlCircle;
if (kmlCircle.Position == null || kmlCircle.RandomPosition == null || kml.Placemark.Name == string.Empty)
{
return;
}
listPoint = new List <MapLngLat>();
listPoint.Add(kmlCircle.Position);
listPoint.Add(kmlCircle.RandomPosition);
float[] vertex = new float[4];
IntPtr ptrVert = Marshal.AllocHGlobal(sizeof(float) * 4);
vertex[0] = (float)listPoint[0].Lng;
vertex[1] = (float)listPoint[0].Lat;
vertex[2] = (float)listPoint[1].Lng;
vertex[3] = (float)listPoint[1].Lat;
Marshal.Copy(vertex, 0, ptrVert, vertex.Length);
this.symbolName = kml.Placemark.Name;
mapControl.MgsDrawLineSymByJBID(symbolName, 16, (ulong)(ptrVert.ToInt64()), 2);
mapControl.MgsUpdateSymFillColor(symbolName, kmlCircle.FillColor.R, kmlCircle.FillColor.G, kmlCircle.FillColor.B, kmlCircle.FillColor.A);
mapControl.MgsUpdateSymColor(symbolName, kmlCircle.StrokeColor.R, kmlCircle.StrokeColor.G, kmlCircle.StrokeColor.B, kmlCircle.StrokeColor.A);
mapControl.MgsUpdateSymLineWidth(symbolName, kmlCircle.StrokeWidth); //轮廓大小
mapControl.update(); //刷新
Marshal.FreeHGlobal(ptrVert);
this.ElementType = ElementTypeEnum.Circle;
bFillColor = kmlCircle.FillColor; //填充颜色
bOutLineColor = kmlCircle.StrokeColor; //轮廓颜色
this.width = kmlCircle.StrokeWidth; //轮廓大小
flashTimer = new Timer();
flashTimer.Elapsed += new ElapsedEventHandler(flashTimer_Elapsed);
flashTimer.Interval = 500;
}
