|
public MeasureArea ( string mapName, List |
||
| mapName | string | 地图名称。【必设参数】 |
| point2Ds | List |
二维地理坐标点数组。【必设参数】 |
| unit | Unit | 返回结果的单位。 |
| return | ||
public override void OnMapMouseMove(object sender, MouseEventArgs e)
{
if (!_start) return;
PointLatLng currentPoint = this._gMapControl.FromLocalToLatLng(e.X, e.Y);
if (flag)
{
_points.RemoveAt(_points.Count - 1);
}
if (!flag) flag = true;
_points.Add(currentPoint);
_polygon = new GMapPolygonExtension("", _points, 2.0F,
System.Drawing.Color.FromArgb(100, 0, 0, 255), System.Drawing.Color.FromArgb(25, 0, 0, 255));
if (_point2Ds.Count > 1)
{
List<Point2D> tempPoints = new List<Point2D>();
tempPoints.AddRange(_point2Ds);
double mercatorX, mercatorY;
Helper.LonLat2Mercator(currentPoint.Lng, currentPoint.Lat, out mercatorX, out mercatorY);
Point2D point2D = new Point2D(mercatorX, mercatorY);
tempPoints.Add(point2D);
Map map = new Map(_mapUrl);
MeasureAreaResult areaResult = map.MeasureArea(_mapName, tempPoints, Unit.KILOMETER);
if (_resultMarker == null || _gMapOverlay.Markers.Count < 1)
{
_resultMarker = new GMapMarkerExtension(currentPoint);
_resultMarker.ToolTipMode = MarkerTooltipMode.Always;
_gMapOverlay.Markers.Add(_resultMarker);
}
_resultMarker.Position = currentPoint;
_resultMarker.ToolTipText = string.Format("{0:f1}平方千米", areaResult.Area);
}
if (_gMapOverlay.Polygons.Count > 0)
{
_gMapOverlay.Polygons[0] = _polygon;
}
else
{
_gMapOverlay.Polygons.Add(_polygon);
}
}
public void MeasureAreaResultTest_point2DsISNULL()
{
Map map = new Map("http://" + ip + ":8090/iserver/services/map-world/rest");
MeasureAreaResult areaResult = null;
try
{
areaResult = map.MeasureArea("世界地图", null, Unit.KILOMETER);
}
catch (ArgumentNullException e)
{
Assert.AreEqual(e.Message, "参数不能为空。\r\n参数名: point2Ds");
}
}
public void MeasureAreaResultTest_mapNameISNULL()
{
Map map = new Map("http://" + ip + ":8090/iserver/services/map-world/rest");
List<Point2D> point2Ds = new List<Point2D>();
Point2D point1 = new Point2D(23.00, 34.00);
Point2D point2 = new Point2D(53.55, 12.66);
Point2D point3 = new Point2D(73.88, 12.6);
point2Ds.Add(point1);
point2Ds.Add(point2);
point2Ds.Add(point3);
MeasureAreaResult areaResult = null;
try
{
areaResult = map.MeasureArea(string.Empty, point2Ds, Unit.KILOMETER);
}
catch (ArgumentNullException e)
{
Assert.AreEqual(e.Message, "参数不能为空。\r\n参数名: mapName");
}
}
public void MeasureAreaResultTest_point2DsISEmply()
{
Map map = new Map("http://" + ip + ":8090/iserver/services/map-world/rest");
List<Point2D> point2Ds = new List<Point2D>();
MeasureAreaResult areaResult = null;
try
{
areaResult = map.MeasureArea("世界地图", point2Ds, Unit.KILOMETER);
}
catch (ArgumentException e)
{
Assert.AreEqual(e.Message, "参数 point2Ds 不合法，必须至少包含三个二维点。");
}
}
public void MeasureAreaResultTest_KILOMETER()
{
Map map = new Map("http://" + ip + ":8090/iserver/services/map-world/rest");
string mapName = "World Map";
List<Point2D> point2Ds = new List<Point2D>();
Point2D point1 = new Point2D(23.00, 34.00);
Point2D point2 = new Point2D(53.55, 12.66);
Point2D point3 = new Point2D(73.88, 12.6);
point2Ds.Add(point1);
point2Ds.Add(point2);
point2Ds.Add(point3);
MeasureAreaResult areaResult = map.MeasureArea(mapName, point2Ds, Unit.KILOMETER);
Assert.AreEqual(areaResult.Area, 3157590.9302391531);
Assert.AreEqual(areaResult.Unit.ToString(), "KILOMETER");
}